facebook · gaearon · Jan 9, 2020 · Jan 9, 2020 · Jan 9, 2020 · Jan 9, 2020
diff --git a/.prettierrc.js b/.prettierrc.js
@@ -8,7 +8,7 @@ module.exports = {
   jsxBracketSameLine: true,
   trailingComma: 'es5',
   printWidth: 80,
-  parser: 'babylon',
+  parser: 'babel',
 
   overrides: [
     {

diff --git a/fixtures/attribute-behavior/src/App.js b/fixtures/attribute-behavior/src/App.js
@@ -461,9 +461,7 @@ function prepareState(initGlobals) {
       hasSameBehaviorForAll,
       rowPatternHash,
       // "Good enough" id that we can store in localStorage
-      rowIdHash: `${attribute.name} ${attribute.tagName} ${
-        attribute.overrideStringValue
-      }`,
+      rowIdHash: `${attribute.name} ${attribute.tagName} ${attribute.overrideStringValue}`,
     };
     const rowGroup = rowPatternHashes.get(rowPatternHash) || new Set();
     rowGroup.add(row);
@@ -866,14 +864,12 @@ class App extends React.Component {
     // Sort
     switch (sortOrder) {
       case ALPHABETICAL:
-        return filteredAttributes.sort(
-          (attr1, attr2) =>
-            attr1.name.toLowerCase() < attr2.name.toLowerCase() ? -1 : 1
+        return filteredAttributes.sort((attr1, attr2) =>
+          attr1.name.toLowerCase() < attr2.name.toLowerCase() ? -1 : 1
         );
       case REV_ALPHABETICAL:
-        return filteredAttributes.sort(
-          (attr1, attr2) =>
-            attr1.name.toLowerCase() < attr2.name.toLowerCase() ? 1 : -1
+        return filteredAttributes.sort((attr1, attr2) =>
+          attr1.name.toLowerCase() < attr2.name.toLowerCase() ? 1 : -1
         );
       case GROUPED_BY_ROW_PATTERN: {
         return filteredAttributes.sort((attr1, attr2) => {

diff --git a/fixtures/dom/src/components/Iframe.js b/fixtures/dom/src/components/Iframe.js
@@ -55,4 +55,4 @@ class IframeSubtree extends React.Component {
   }
 }
 
-export default (ReactDOM.createPortal ? IframePortal : IframeSubtree);
+export default ReactDOM.createPortal ? IframePortal : IframeSubtree;
diff --git a/fixtures/dom/src/components/fixtures/home.js b/fixtures/dom/src/components/fixtures/home.js
@@ -33,7 +33,8 @@ export default function Home() {
               <td>
                 <a href="https://www.mozilla.org/en-US/firefox/organizations/">
                   ESR<sup>†</sup>
-                </a>, Latest
+                </a>
+                , Latest
               </td>
             </tr>
             <tr>

diff --git a/fixtures/dom/src/components/fixtures/suspense/index.js b/fixtures/dom/src/components/fixtures/suspense/index.js
@@ -213,8 +213,8 @@ class TextInputFixtures extends React.Component {
 
           <Fixture>
             <SuspendyTree>
-              <img src="https://upload.wikimedia.org/wikipedia/commons/e/ee/Atom_%282%29.png" />React
-              is cool
+              <img src="https://upload.wikimedia.org/wikipedia/commons/e/ee/Atom_%282%29.png" />
+              React is cool
             </SuspendyTree>
           </Fixture>
         </TestCase>
@@ -308,7 +308,9 @@ class TextInputFixtures extends React.Component {
               <div style={{height: 200, overflow: 'scroll'}}>
                 {Array(20)
                   .fill()
-                  .map((_, i) => <h2 key={i}>{i + 1}</h2>)}
+                  .map((_, i) => (
+                    <h2 key={i}>{i + 1}</h2>
+                  ))}
               </div>
             </SuspendyTree>
           </Fixture>

diff --git a/fixtures/dom/src/toWarnDev.js b/fixtures/dom/src/toWarnDev.js
@@ -205,9 +205,7 @@ const createMatcherFor = consoleMethod =>
           if (withoutStack !== warningsWithoutComponentStack.length) {
             return {
               message: () =>
-                `Expected ${withoutStack} warnings without a component stack but received ${
-                  warningsWithoutComponentStack.length
-                }:\n` +
+                `Expected ${withoutStack} warnings without a component stack but received ${warningsWithoutComponentStack.length}:\n` +
                 warningsWithoutComponentStack.map(warning =>
                   this.utils.printReceived(warning)
                 ),

diff --git a/fixtures/eslint/index.js b/fixtures/eslint/index.js
@@ -8,22 +8,19 @@ function Comment({comment, commentSource}) {
   const currentUserID = comment.viewer.id;
   const environment = RelayEnvironment.forUser(currentUserID);
   const commentID = nullthrows(comment.id);
-  useEffect(
-    () => {
-      const subscription = SubscriptionCounter.subscribeOnce(
-        `StoreSubscription_${commentID}`,
-        () =>
-          StoreSubscription.subscribe(
-            environment,
-            {
-              comment_id: commentID,
-            },
-            currentUserID,
-            commentSource
-          )
-      );
-      return () => subscription.dispose();
-    },
-    [commentID, commentSource, currentUserID, environment]
-  );
+  useEffect(() => {
+    const subscription = SubscriptionCounter.subscribeOnce(
+      `StoreSubscription_${commentID}`,
+      () =>
+        StoreSubscription.subscribe(
+          environment,
+          {
+            comment_id: commentID,
+          },
+          currentUserID,
+          commentSource
+        )
+    );
+    return () => subscription.dispose();
+  }, [commentID, commentSource, currentUserID, environment]);
 }
diff --git a/fixtures/fiber-debugger/src/App.js b/fixtures/fiber-debugger/src/App.js
@@ -192,8 +192,7 @@ class App extends Component {
               }
             />
             <p>
-              Step {currentStep}
-              : {friendlyAction} (
+              Step {currentStep}: {friendlyAction} (
               <a style={{color: 'gray'}} onClick={this.handleEdit} href="#">
                 Edit
               </a>

diff --git a/fixtures/fiber-debugger/src/Fibers.js b/fixtures/fiber-debugger/src/Fibers.js
@@ -330,83 +330,76 @@ export default function Fibers({fibers, show, graphSettings, ...rest}) {
               ]}
             </div>
           </Vertex>,
-          fiber.child &&
-            show.child && (
-              <Edge
-                source={fiber.id}
-                target={fiber.child}
-                kind="child"
-                weight={1000}
-                key={`${fiber.id}-${fiber.child}-child`}>
-                child
-              </Edge>
-            ),
-          fiber.sibling &&
-            show.sibling && (
-              <Edge
-                source={fiber.id}
-                target={fiber.sibling}
-                kind="sibling"
-                weight={2000}
-                key={`${fiber.id}-${fiber.sibling}-sibling`}>
-                sibling
-              </Edge>
-            ),
-          fiber.return &&
-            show.return && (
-              <Edge
-                source={fiber.id}
-                target={fiber.return}
-                kind="return"
-                weight={1000}
-                key={`${fiber.id}-${fiber.return}-return`}>
-                return
-              </Edge>
-            ),
-          fiber.nextEffect &&
-            show.fx && (
-              <Edge
-                source={fiber.id}
-                target={fiber.nextEffect}
-                kind="fx"
-                weight={100}
-                key={`${fiber.id}-${fiber.nextEffect}-nextEffect`}>
-                nextFx
-              </Edge>
-            ),
-          fiber.firstEffect &&
-            show.fx && (
-              <Edge
-                source={fiber.id}
-                target={fiber.firstEffect}
-                kind="fx"
-                weight={100}
-                key={`${fiber.id}-${fiber.firstEffect}-firstEffect`}>
-                firstFx
-              </Edge>
-            ),
-          fiber.lastEffect &&
-            show.fx && (
-              <Edge
-                source={fiber.id}
-                target={fiber.lastEffect}
-                kind="fx"
-                weight={100}
-                key={`${fiber.id}-${fiber.lastEffect}-lastEffect`}>
-                lastFx
-              </Edge>
-            ),
-          fiber.alternate &&
-            show.alt && (
-              <Edge
-                source={fiber.id}
-                target={fiber.alternate}
-                kind="alt"
-                weight={10}
-                key={`${fiber.id}-${fiber.alternate}-alt`}>
-                alt
-              </Edge>
-            ),
+          fiber.child && show.child && (
+            <Edge
+              source={fiber.id}
+              target={fiber.child}
+              kind="child"
+              weight={1000}
+              key={`${fiber.id}-${fiber.child}-child`}>
+              child
+            </Edge>
+          ),
+          fiber.sibling && show.sibling && (
+            <Edge
+              source={fiber.id}
+              target={fiber.sibling}
+              kind="sibling"
+              weight={2000}
+              key={`${fiber.id}-${fiber.sibling}-sibling`}>
+              sibling
+            </Edge>
+          ),
+          fiber.return && show.return && (
+            <Edge
+              source={fiber.id}
+              target={fiber.return}
+              kind="return"
+              weight={1000}
+              key={`${fiber.id}-${fiber.return}-return`}>
+              return
+            </Edge>
+          ),
+          fiber.nextEffect && show.fx && (
+            <Edge
+              source={fiber.id}
+              target={fiber.nextEffect}
+              kind="fx"
+              weight={100}
+              key={`${fiber.id}-${fiber.nextEffect}-nextEffect`}>
+              nextFx
+            </Edge>
+          ),
+          fiber.firstEffect && show.fx && (
+            <Edge
+              source={fiber.id}
+              target={fiber.firstEffect}
+              kind="fx"
+              weight={100}
+              key={`${fiber.id}-${fiber.firstEffect}-firstEffect`}>
+              firstFx
+            </Edge>
+          ),
+          fiber.lastEffect && show.fx && (
+            <Edge
+              source={fiber.id}
+              target={fiber.lastEffect}
+              kind="fx"
+              weight={100}
+              key={`${fiber.id}-${fiber.lastEffect}-lastEffect`}>
+              lastFx
+            </Edge>
+          ),
+          fiber.alternate && show.alt && (
+            <Edge
+              source={fiber.id}
+              target={fiber.alternate}
+              kind="alt"
+              weight={10}
+              key={`${fiber.id}-${fiber.alternate}-alt`}>
+              alt
+            </Edge>
+          ),
         ])}
       </Graph>
     </div>

diff --git a/package.json b/package.json
@@ -71,7 +71,7 @@
     "ncp": "^2.0.0",
     "object-assign": "^4.1.1",
     "pacote": "^9.5.6",
-    "prettier": "1.13.7",
+    "prettier": "1.19.1",
     "prop-types": "^15.6.2",
     "random-seed": "^0.3.0",
     "react-lifecycles-compat": "^3.0.2",

diff --git a/packages/create-subscription/src/__tests__/createSubscription-test.internal.js b/packages/create-subscription/src/__tests__/createSubscription-test.internal.js
@@ -118,7 +118,10 @@ describe('createSubscription', () => {
       const Subscription = createSubscription({
         getCurrentValue: source => undefined,
         subscribe: (source, callback) => {
-          source.then(value => callback(value), value => callback(value));
+          source.then(
+            value => callback(value),
+            value => callback(value),
+          );
           // (Can't unsubscribe from a Promise)
           return () => {};
         },
@@ -196,7 +199,10 @@ describe('createSubscription', () => {
       const Subscription = createSubscription({
         getCurrentValue: source => undefined,
         subscribe: (source, callback) => {
-          source.then(value => callback(value), value => callback(value));
+          source.then(
+            value => callback(value),
+            value => callback(value),
+          );
           // (Can't unsubscribe from a Promise)
           return () => {};
         },

diff --git a/packages/eslint-plugin-react-hooks/src/ExhaustiveDeps.js b/packages/eslint-plugin-react-hooks/src/ExhaustiveDeps.js
@@ -613,21 +613,15 @@ export default {
                   context.report({
                     node: declaredDependencyNode,
                     message:
-                      `The ${
-                        declaredDependencyNode.raw
-                      } literal is not a valid dependency ` +
+                      `The ${declaredDependencyNode.raw} literal is not a valid dependency ` +
                       `because it never changes. ` +
-                      `Did you mean to include ${
-                        declaredDependencyNode.value
-                      } in the array instead?`,
+                      `Did you mean to include ${declaredDependencyNode.value} in the array instead?`,
                   });
                 } else {
                   context.report({
                     node: declaredDependencyNode,
                     message:
-                      `The ${
-                        declaredDependencyNode.raw
-                      } literal is not a valid dependency ` +
+                      `The ${declaredDependencyNode.raw} literal is not a valid dependency ` +
                       'because it never changes. You can safely remove it.',
                   });
                 }
@@ -697,22 +691,16 @@ export default {
         bareFunctions.forEach(({fn, suggestUseCallback}) => {
           let message =
             `The '${fn.name.name}' function makes the dependencies of ` +
-            `${reactiveHookName} Hook (at line ${
-              declaredDependenciesNode.loc.start.line
-            }) ` +
+            `${reactiveHookName} Hook (at line ${declaredDependenciesNode.loc.start.line}) ` +
             `change on every render.`;
           if (suggestUseCallback) {
             message +=
               ` To fix this, ` +
-              `wrap the '${
-                fn.name.name
-              }' definition into its own useCallback() Hook.`;
+              `wrap the '${fn.name.name}' definition into its own useCallback() Hook.`;
           } else {
             message +=
               ` Move it inside the ${reactiveHookName} callback. ` +
-              `Alternatively, wrap the '${
-                fn.name.name
-              }' definition into its own useCallback() Hook.`;
+              `Alternatively, wrap the '${fn.name.name}' definition into its own useCallback() Hook.`;
           }
           // TODO: What if the function needs to change on every render anyway?
           // Should we suggest removing effect deps as an appropriate fix too?

diff --git a/packages/legacy-events/EventPluginUtils.js b/packages/legacy-events/EventPluginUtils.js
@@ -40,15 +40,15 @@ if (__DEV__) {
     const listenersLen = listenersIsArr
       ? dispatchListeners.length
       : dispatchListeners
-        ? 1
-        : 0;
+      ? 1
+      : 0;
 
     const instancesIsArr = Array.isArray(dispatchInstances);
     const instancesLen = instancesIsArr
       ? dispatchInstances.length
       : dispatchInstances
-        ? 1
-        : 0;
+      ? 1
+      : 0;
 
     if (instancesIsArr !== listenersIsArr || instancesLen !== listenersLen) {
       console.error('EventPluginUtils: Invalid `event`.');
-Original file line number
+Diff line change
@@ Expand Up / @@ -55,4 +55,4 @@ class IframeSubtree extends React.Component { @@
       }
     }
-    export default (ReactDOM.createPortal ? IframePortal : IframeSubtree);
+    export default ReactDOM.createPortal ? IframePortal : IframeSubtree;