Add skeleton for the WASM prototype

.gitignore

@@ -13,3 +13,6 @@ bazel-out/
 yalc.lock
 .rpt2_cache/
 package/
+
+tfjs-backend-wasm/dist
+tfjs-backend-wasm/wasm-out

.vscode/c_cpp_properties.json

@@ -0,0 +1,20 @@
+{
+    "configurations": [
+        {
+            "name": "Mac",
+            "includePath": [
+                "${workspaceFolder}/**",
+                "~/emsdk/fastcomp/emscripten/system/include/**"
+            ],
+            "defines": [],
+            "macFrameworkPath": [
+                "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/System/Library/Frameworks"
+            ],
+            "compilerPath": "/usr/bin/clang",
+            "cStandard": "c11",
+            "cppStandard": "c++11",
+            "intelliSenseMode": "clang-x64"
+        }
+    ],
+    "version": 4
+}

.vscode/settings.json

@@ -8,8 +8,6 @@
     "**/.rpt2_cache/": true,
     "**/.yalc/**/*": true
   },
-  "tslint.enable": true,
-  "tslint.run": "onType",
   "tslint.configFile": "tslint.json",
   "files.trimTrailingWhitespace": true,
   "editor.tabSize": 2,

tfjs-backend-nodegl/settings.json → tfjs-backend-nodegl/.vscode/settings.json

@@ -8,8 +8,6 @@
     "**/.rpt2_cache/": true,
     "**/.yalc/**/*": true
   },
-  "tslint.enable": true,
-  "tslint.run": "onType",
   "tslint.configFile": "tslint.json",
   "files.trimTrailingWhitespace": true,
   "editor.tabSize": 2,

tfjs-backend-wasm/.npmrc

@@ -0,0 +1 @@
+package-lock=false

tfjs-backend-wasm/.vscode/c_cpp_properties.json

@@ -0,0 +1,17 @@
+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "includePath": [
+                "${workspaceFolder}/src/**",
+                "~/emsdk/fastcomp/emscripten/system/include/**"
+            ],
+            "defines": [],
+            "compilerPath": "/usr/bin/clang",
+            "cStandard": "c11",
+            "cppStandard": "c++11",
+            "intelliSenseMode": "clang-x64"
+        }
+    ],
+    "version": 4
+}

tfjs-backend-wasm/.vscode/settings.json

@@ -0,0 +1,36 @@
+// Place your settings in this file to overwrite default and user settings.
+{
+  "search.exclude": {
+    "**/node_modules": true,
+    "**/coverage/": true,
+    "**/dist/": true,
+    "**/yarn.lock": true,
+    "**/.rpt2_cache/": true,
+    "**/.yalc/**/*": true
+  },
+  "tslint.configFile": "tslint.json",
+  "files.trimTrailingWhitespace": true,
+  "editor.tabSize": 2,
+  "editor.insertSpaces": true,
+  "[typescript]": {
+    "editor.formatOnSave": true
+  },
+  "[javascript]": {
+    "editor.formatOnSave": true
+  },
+  "[cpp]": {
+    "editor.formatOnSave": true
+  },
+  "editor.rulers": [80],
+  "clang-format.style": "Google",
+  "files.insertFinalNewline": true,
+  "editor.detectIndentation": false,
+  "editor.wrappingIndent": "none",
+  "typescript.tsdk": "./node_modules/typescript/lib",
+  "clang-format.executable": "${workspaceRoot}/node_modules/.bin/clang-format",
+  "files.associations": {
+    "vector": "cpp",
+    "map": "cpp",
+    "algorithm": "cpp"
+  }
+}

tfjs-backend-wasm/README.md

@@ -0,0 +1,22 @@
+# Emscripten installation
+
+Install emscripten [here](https://emscripten.org/docs/getting_started/downloads.html)
+
+
+# Building
+
+```sh
+yarn build
+```
+
+# Testing
+
+```sh
+yarn test
+```
+
+# Deployment
+```sh
+./scripts/build-npm.sh
+npm publish
+```

tfjs-backend-wasm/karma.conf.js

@@ -0,0 +1,72 @@
+/**
+ * @license
+ * Copyright 2019 Google LLC. All Rights Reserved.
+ * 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.
+ * =============================================================================
+ */
+
+const karmaTypescriptConfig = {
+  tsconfig: 'tsconfig.json',
+  compilerOptions: {allowJs: true, declaration: false},
+  bundlerOptions: {
+    sourceMap: true,
+    // Ignore the import of the `worker_threads` package used in a core test
+    // meant to run in node.
+    exclude: ['worker_threads']
+  },
+  // Disable coverage reports and instrumentation by default for tests
+  coverageOptions: {instrumentation: false},
+  reports: {},
+  include: ['src/', 'wasm-out/']
+};
+
+module.exports = function(config) {
+  const args = [];
+  if (config.grep) {
+    args.push('--grep', config.grep);
+  }
+  if (config.flags) {
+    args.push('--flags', config.flags);
+  }
+  config.set({
+    basePath: '',
+    frameworks: ['jasmine', 'karma-typescript'],
+    files: [
+      // Setup the environment for the tests.
+      'src/setup_test.ts',
+      // Serve the wasm file as a static resource.
+      {pattern: 'wasm-out/**/*.wasm', included: false},
+      // Import the generated js library from emscripten.
+      {pattern: 'wasm-out/**/*.js'},
+      // Import the rest of the sources.
+      {pattern: 'src/**/*.ts'},
+    ],
+    preprocessors: {
+      'wasm-out/**/*.js': ['karma-typescript'],
+      '**/*.ts': ['karma-typescript']
+    },
+    karmaTypescriptConfig,
+    // Redirect the request for the wasm file so karma can find it.
+    proxies: {
+      '/base/node_modules/karma-typescript/dist/client/tfjs-backend-wasm.wasm':
+          '/base/wasm-out/tfjs-backend-wasm.wasm',
+    },
+    reporters: ['progress', 'karma-typescript'],
+    port: 9876,
+    colors: true,
+    autoWatch: true,
+    browsers: ['Chrome'],
+    singleRun: false,
+    client: {jasmine: {random: false}, args: args}
+  })
+}

tfjs-backend-wasm/package.json

@@ -0,0 +1,41 @@
+{
+  "name": "@tensorflow/tfjs-backend-wasm",
+  "version": "0.0.1",
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "jsnext:main": "dist/tf-wasm.esm.js",
+  "module": "dist/tf-wasm.esm.js",
+  "unpkg": "dist/tf-wasm.min.js",
+  "jsdelivr": "dist/tf-wasm.min.js",
+  "scripts": {
+    "build": "rimraf dist/ && ./scripts/build-wasm.sh && tsc && cp wasm-out/*.wasm dist/",
+    "lint": "tslint -p . -t verbose",
+    "test": "./scripts/build-wasm.sh && karma start"
+  },
+  "peerDependencies": {
+    "@tensorflow/tfjs-core": "~1.2.7"
+  },
+  "devDependencies": {
+    "@tensorflow/tfjs-core": "~1.2.7",
+    "@types/emscripten": "~0.0.34",
+    "clang-format": "^1.2.4",
+    "jasmine-core": "~3.1.0",
+    "karma": "~4.0.0",
+    "karma-browserstack-launcher": "~1.4.0",
+    "karma-chrome-launcher": "~2.2.0",
+    "karma-firefox-launcher": "~1.1.0",
+    "karma-jasmine": "~1.1.1",
+    "karma-typescript": "~4.0.0",
+    "rimraf": "~2.6.2",
+    "rollup": "^1.17.0",
+    "rollup-plugin-commonjs": "^10.0.1",
+    "rollup-plugin-node-resolve": "^5.2.0",
+    "rollup-plugin-terser": "^5.1.1",
+    "rollup-plugin-typescript2": "^0.22.1",
+    "tslint": "~5.11.0",
+    "tslint-no-circular-imports": "^0.5.0",
+    "typescript": "3.3.3333",
+    "yalc": "~1.0.0-pre.21"
+  },
+  "license": "Apache-2.0"
+}

tfjs-backend-wasm/rollup.config.js

@@ -0,0 +1,110 @@
+/**
+ * @license
+ * Copyright 2019 Google LLC. All Rights Reserved.
+ * 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.
+ * =============================================================================
+ */
+
+import commonjs from 'rollup-plugin-commonjs';
+import node from 'rollup-plugin-node-resolve';
+import {terser} from 'rollup-plugin-terser';
+import typescript from 'rollup-plugin-typescript2';
+
+const PREAMBLE = `/**
+ * @license
+ * Copyright ${(new Date).getFullYear()} Google LLC. All Rights Reserved.
+ * 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.
+ * =============================================================================
+ */`;
+
+function config({plugins = [], output = {}}) {
+  return {
+    input: 'src/index.ts',
+    plugins: [
+      typescript({
+        tsconfigOverride: {compilerOptions: {module: 'ES2015'}},
+      }),
+      node(),
+      // Polyfill require() from dependencies.
+      commonjs({
+        ignore: ['crypto', 'node-fetch', 'util'],
+        include: ['node_modules/**', 'wasm-out/**']
+      }),
+      ...plugins
+    ],
+    output: {
+      banner: PREAMBLE,
+      sourcemap: true,
+      globals: {'@tensorflow/tfjs-core': 'tf'},
+      ...output,
+    },
+    external: ['crypto', '@tensorflow/tfjs-core'],
+    onwarn: warning => {
+      let {code} = warning;
+      if (code === 'CIRCULAR_DEPENDENCY' || code === 'CIRCULAR' ||
+          code === 'THIS_IS_UNDEFINED') {
+        return;
+      }
+      console.warn('WARNING: ', warning.message);
+    }
+  };
+}
+
+module.exports = cmdOptions => {
+  const bundles = [];
+
+  if (!cmdOptions.ci) {
+    // tf-backend-wasm.js
+    bundles.push(config({
+      output: {
+        format: 'umd',
+        name: 'tf',
+        extend: true,
+        file: 'dist/tf-backend-wasm.js',
+      }
+    }));
+  }
+
+  // tf-backend-wasm.min.js
+  bundles.push(config({
+    plugins: [terser({output: {preamble: PREAMBLE}})],
+    output: {
+      format: 'umd',
+      name: 'tf',
+      extend: true,
+      file: 'dist/tf-backend-wasm.min.js',
+    },
+  }));
+
+  if (!cmdOptions.ci) {
+    // tf-backend-wasm.esm.js
+    bundles.push(config({
+      plugins: [terser({output: {preamble: PREAMBLE}})],
+      output: {
+        format: 'es',
+        file: 'dist/tf-backend-wasm.esm.js',
+      }
+    }));
+  }
+  return bundles;
+};

tfjs-backend-wasm/scripts/build-npm.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+# Copyright 2019 Google Inc. All Rights Reserved.
+#
+# 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.
+# =============================================================================
+
+set -e
+
+yarn rimraf dist/
+yarn
+yarn build
+yarn rollup -c
+
+echo "Stored standalone library at dist/tf-backend-wasm(.min).js"