style: upgrade to prettier 1.9 (#5024)

CHANGELOG.md

@@ -53,8 +53,8 @@
 
 ### Features
 
-* `[jest-jasmine2]` Update Timeout error message to `jest.timeout` and display current timeout value
-  ([#4990](https://github.com/facebook/jest/pull/4990))
+* `[jest-jasmine2]` Update Timeout error message to `jest.timeout` and display
+  current timeout value ([#4990](https://github.com/facebook/jest/pull/4990))
 * `[jest-runner]` Enable experimental detection of leaked contexts
   ([#4895](https://github.com/facebook/jest/pull/4895))
 * `[jest-cli]` Add combined coverage threshold for directories.
@@ -1048,8 +1048,8 @@ See https://facebook.github.io/jest/blog/2016/12/15/2016-in-jest.html
   many tests.
   * Add support for property testing via testcheck-js.
 * Added a webpack tutorial.
-* Added support for virtual mocks through `jest.mock('Module', implementation,
-  {virtual: true})`.
+* Added support for virtual mocks through
+  `jest.mock('Module', implementation, {virtual: true})`.
 * Added snapshot functionality through `toMatchSnapshot()`.
 * Redesigned website.
 

docs/CLI.md

@@ -3,9 +3,9 @@ id: cli
 title: Jest CLI Options
 ---
 
-The `jest` command line runner has a number of useful options. You can run `jest
---help` to view all available options. Many of the options shown below can also
-be used together to run tests exactly the way you want. Every one of Jest's
+The `jest` command line runner has a number of useful options. You can run
+`jest --help` to view all available options. Many of the options shown below can
+also be used together to run tests exactly the way you want. Every one of Jest's
 [Configuration](Configuration.md) options can also be specified through the CLI.
 
 Here is a brief overview:
@@ -115,8 +115,8 @@ fail the test and require Jest to be run with `--updateSnapshot`.
 
 Deletes the Jest cache directory and then exits without running tests. Will
 delete `cacheDirectory` if the option is passed, or Jest's default cache
-directory. The default cache directory can be found by calling `jest
---showConfig`. _Note: clearing the cache will reduce performance._
+directory. The default cache directory can be found by calling
+`jest --showConfig`. _Note: clearing the cache will reduce performance._
 
 ### `--collectCoverageFrom=<glob>`
 
@@ -246,8 +246,8 @@ Prevent tests from printing messages through the console.
 
 Alias: `-t`. Run only tests and test suites with a name that matches the regex.
 For example, suppose you want to run only tests related to authorization which
-will have names like `"GET /api/posts with auth"`, then you can use `jest
--t=auth`.
+will have names like `"GET /api/posts with auth"`, then you can use
+`jest -t=auth`.
 
 ### `--testLocationInResults`
 

docs/Configuration.md

@@ -146,8 +146,8 @@ coverage information will be skipped.
 These pattern strings match against the full path. Use the `<rootDir>` string
 token to include the path to your project's root directory to prevent it from
 accidentally ignoring all of your files in different environments that may have
-different root directories. Example: `["<rootDir>/build/",
-"<rootDir>/node_modules/"]`.
+different root directories. Example:
+`["<rootDir>/build/", "<rootDir>/node_modules/"]`.
 
 ### `coverageReporters` [array<string>]
 
@@ -754,8 +754,8 @@ be skipped.
 These pattern strings match against the full path. Use the `<rootDir>` string
 token to include the path to your project's root directory to prevent it from
 accidentally ignoring all of your files in different environments that may have
-different root directories. Example: `["<rootDir>/build/",
-"<rootDir>/node_modules/"]`.
+different root directories. Example:
+`["<rootDir>/build/", "<rootDir>/node_modules/"]`.
 
 ### `testRegex` [string]
 
@@ -905,8 +905,8 @@ will not be transformed.
 These pattern strings match against the full path. Use the `<rootDir>` string
 token to include the path to your project's root directory to prevent it from
 accidentally ignoring all of your files in different environments that may have
-different root directories. Example: `["<rootDir>/bower_components/",
-"<rootDir>/node_modules/"]`.
+different root directories. Example:
+`["<rootDir>/bower_components/", "<rootDir>/node_modules/"]`.
 
 ### `unmockedModulePathPatterns` [array<string>]
 

docs/ExpectAPI.md

@@ -395,7 +395,9 @@ test('resolves to lemon', () => {
 });
 ```
 
-Note that, since you are still testing promises, the test is still asynchronous. Hence, you will need to [tell Jest to wait](TestingAsyncCode.md#promises) by returning the unwrapped assertion.
+Note that, since you are still testing promises, the test is still asynchronous.
+Hence, you will need to [tell Jest to wait](TestingAsyncCode.md#promises) by
+returning the unwrapped assertion.
 
 Alternatively, you can use `async/await` in combination with `.resolves`:
 
@@ -424,7 +426,9 @@ test('rejects to octopus', () => {
 });
 ```
 
-Note that, since you are still testing promises, the test is still asynchronous. Hence, you will need to [tell Jest to wait](TestingAsyncCode.md#promises) by returning the unwrapped assertion.
+Note that, since you are still testing promises, the test is still asynchronous.
+Hence, you will need to [tell Jest to wait](TestingAsyncCode.md#promises) by
+returning the unwrapped assertion.
 
 Alternatively, you can use `async/await` in combination with `.rejects`.
 

docs/GettingStarted.md

@@ -113,8 +113,8 @@ You are now set up to use all ES6 features and React specific syntax.
 > `test`. It will not use `development` section like Babel does by default when
 > no `NODE_ENV` is set.
 
-> Note: If you've turned off transpilation of ES2015 modules with the option `{
-> "modules": false }`, you have to make sure to turn this on in your test
+> Note: If you've turned off transpilation of ES2015 modules with the option
+> `{ "modules": false }`, you have to make sure to turn this on in your test
 > environment.
 
 ```json

docs/GlobalAPI.md

@@ -365,8 +365,8 @@ tests.
 
 ### `test.skip(name, fn)`
 
-Also under the aliases: `it.skip(name, fn)` or `xit(name, fn)` or `xtest(name,
-fn)`
+Also under the aliases: `it.skip(name, fn)` or `xit(name, fn)` or
+`xtest(name, fn)`
 
 When you are maintaining a large codebase, you may sometimes find a test that is
 temporarily broken for some reason. If you want to skip running this test, but

docs/JestObjectAPI.md

@@ -386,9 +386,9 @@ Creates a mock function similar to `jest.fn` but also tracks calls to
 
 _Note: By default, `jest.spyOn` also calls the **spied** method. This is
 different behavior from most other test libraries. If you want to overwrite the
-original function, you can use `jest.spyOn(object,
-methodName).mockImplementation(() => customImplementation)` or
-`object[methodName] = jest.fn(() => customImplementation);`_
+original function, you can use
+`jest.spyOn(object, methodName).mockImplementation(() => customImplementation)`
+or `object[methodName] = jest.fn(() => customImplementation);`_
 
 Example:
 

docs/Troubleshooting.md

@@ -146,8 +146,9 @@ More information on Node debugging can be found
 ### Debugging in WebStorm
 
 The easiest way to debug Jest tests in
-[WebStorm](https://www.jetbrains.com/webstorm/) is using `Jest run/debug
-configuration`. It will launch tests and automatically attach debugger.
+[WebStorm](https://www.jetbrains.com/webstorm/) is using
+`Jest run/debug configuration`. It will launch tests and automatically attach
+debugger.
 
 In the WebStorm menu `Run` select `Edit Configurations...`. Then click `+` and
 select `Jest`. Optionally specify the Jest configuration file, additional

docs/Webpack.md

@@ -108,8 +108,8 @@ Then all your className lookups on the styles object will be returned as-is
 ```
 
 > Notice that Proxy is enabled in Node 6 by default. If you are not on Node 6
-> yet, make sure you invoke Jest using `node --harmony_proxies
-> node_modules/.bin/jest`.
+> yet, make sure you invoke Jest using
+> `node --harmony_proxies node_modules/.bin/jest`.
 
 If `moduleNameMapper` cannot fulfill your requirements, you can use Jest's
 [`transform`](Configuration.md#transform-object-string-string) config option to

package.json

@@ -54,7 +54,7 @@
     "mkdirp": "^0.5.1",
     "mocha": "^4.0.1",
     "mock-fs": "^4.4.1",
-    "prettier": "^1.8.2",
+    "prettier": "^1.9.1",
     "progress": "^2.0.0",
     "react": "^15.4.2",
     "react-addons-test-utils": "15.4.2",
@@ -148,6 +148,7 @@
   },
   "prettier": {
     "bracketSpacing": false,
+    "proseWrap": "always",
     "singleQuote": true,
     "trailingComma": "all"
   }

packages/expect/src/__tests__/matchers.test.js

@@ -448,9 +448,7 @@ describe(
         jestExpect(big).toBeGreaterThanOrEqual(small);
       });
 
-      it(`{pass: false} expect(${small}).toBeGreaterThanOrEqual(${
-        big
-      })`, () => {
+      it(`{pass: false} expect(${small}).toBeGreaterThanOrEqual(${big})`, () => {
         jestExpect(small).not.toBeGreaterThanOrEqual(big);
       });
 
@@ -715,9 +713,9 @@ describe('.toMatch()', () => {
 describe('.toHaveLength', () => {
   [[[1, 2], 2], [[], 0], [['a', 'b'], 2], ['abc', 3], ['', 0]].forEach(
     ([received, length]) => {
-      test(`{pass: true} expect(${stringify(received)}).toHaveLength(${
-        length
-      })`, () => {
+      test(`{pass: true} expect(${stringify(
+        received,
+      )}).toHaveLength(${length})`, () => {
         jestExpect(received).toHaveLength(length);
         expect(() =>
           jestExpect(received).not.toHaveLength(length),
@@ -728,9 +726,9 @@ describe('.toHaveLength', () => {
 
   [[[1, 2], 3], [[], 1], [['a', 'b'], 99], ['abc', 66], ['', 1]].forEach(
     ([received, length]) => {
-      test(`{pass: false} expect(${stringify(received)}).toHaveLength(${
-        length
-      })`, () => {
+      test(`{pass: false} expect(${stringify(
+        received,
+      )}).toHaveLength(${length})`, () => {
         jestExpect(received).not.toHaveLength(length);
         expect(() =>
           jestExpect(received).toHaveLength(length),
@@ -758,9 +756,9 @@ describe('.toHaveProperty()', () => {
     [{a: {b: {c: 5}}}, 'a.b', {c: 5}],
     [Object.assign(Object.create(null), {property: 1}), 'property', 1],
   ].forEach(([obj, keyPath, value]) => {
-    test(`{pass: true} expect(${stringify(obj)}).toHaveProperty('${
-      keyPath
-    }', ${stringify(value)})`, () => {
+    test(`{pass: true} expect(${stringify(
+      obj,
+    )}).toHaveProperty('${keyPath}', ${stringify(value)})`, () => {
       jestExpect(obj).toHaveProperty(keyPath, value);
       expect(() =>
         jestExpect(obj).not.toHaveProperty(keyPath, value),
@@ -779,9 +777,9 @@ describe('.toHaveProperty()', () => {
     ['abc', 'a.b.c', {a: 5}],
     [{a: {b: {c: 5}}}, 'a.b', {c: 4}],
   ].forEach(([obj, keyPath, value]) => {
-    test(`{pass: false} expect(${stringify(obj)}).toHaveProperty('${
-      keyPath
-    }', ${stringify(value)})`, () => {
+    test(`{pass: false} expect(${stringify(
+      obj,
+    )}).toHaveProperty('${keyPath}', ${stringify(value)})`, () => {
       expect(() =>
         jestExpect(obj).toHaveProperty(keyPath, value),
       ).toThrowErrorMatchingSnapshot();
@@ -794,9 +792,9 @@ describe('.toHaveProperty()', () => {
     [{a: 0}, 'a'],
     [{a: {b: undefined}}, 'a.b'],
   ].forEach(([obj, keyPath]) => {
-    test(`{pass: true} expect(${stringify(obj)}).toHaveProperty('${
-      keyPath
-    }')'`, () => {
+    test(`{pass: true} expect(${stringify(
+      obj,
+    )}).toHaveProperty('${keyPath}')'`, () => {
       jestExpect(obj).toHaveProperty(keyPath);
       expect(() =>
         jestExpect(obj).not.toHaveProperty(keyPath),
@@ -811,9 +809,9 @@ describe('.toHaveProperty()', () => {
     [1, 'a.b.c'],
     ['abc', 'a.b.c'],
   ].forEach(([obj, keyPath]) => {
-    test(`{pass: false} expect(${stringify(obj)}).toHaveProperty('${
-      keyPath
-    }')`, () => {
+    test(`{pass: false} expect(${stringify(
+      obj,
+    )}).toHaveProperty('${keyPath}')`, () => {
       expect(() =>
         jestExpect(obj).toHaveProperty(keyPath),
       ).toThrowErrorMatchingSnapshot();
@@ -828,9 +826,9 @@ describe('.toHaveProperty()', () => {
     [{a: {b: {}}}, null],
     [{a: {b: {}}}, 1],
   ].forEach(([obj, keyPath]) => {
-    test(`{error} expect(${stringify(obj)}).toHaveProperty('${
-      keyPath
-    }')`, () => {
+    test(`{error} expect(${stringify(
+      obj,
+    )}).toHaveProperty('${keyPath}')`, () => {
       expect(() =>
         jestExpect(obj).toHaveProperty(keyPath),
       ).toThrowErrorMatchingSnapshot();

packages/expect/src/matchers.js

@@ -553,9 +553,9 @@ const matchers: MatchersObject = {
                 `  ${printReceived(result.value)}` +
                 (diffString ? `\n\nDifference:\n\n${diffString}` : '')
               : traversedPath
-                ? `Received:\n  ${RECEIVED_COLOR('object')}.${
-                    traversedPath
-                  }: ${printReceived(lastTraversedObject)}`
+                ? `Received:\n  ${RECEIVED_COLOR(
+                    'object',
+                  )}.${traversedPath}: ${printReceived(lastTraversedObject)}`
                 : '')
           );
         };

packages/jest-cli/src/lib/watch_plugin_registry.js

@@ -32,9 +32,7 @@ export default class WatchPluginRegistry {
     // before assuming it's a valid watch plugin.
     if (getType(maybePlugin) !== 'object') {
       throw new Error(
-        `Jest watch plugin ${
-          pluginModulePath
-        } must be an ES Module or export an object`,
+        `Jest watch plugin ${pluginModulePath} must be an ES Module or export an object`,
       );
     }
     if (getType(maybePlugin.key) !== 'number') {
@@ -44,26 +42,20 @@ export default class WatchPluginRegistry {
     }
     if (getType(maybePlugin.prompt) !== 'string') {
       throw new Error(
-        `Jest watch plugin ${
-          pluginModulePath
-        } must export 'prompt' as a string`,
+        `Jest watch plugin ${pluginModulePath} must export 'prompt' as a string`,
       );
     }
     if (getType(maybePlugin.enter) !== 'function') {
       throw new Error(
-        `Jest watch plugin ${
-          pluginModulePath
-        } must export 'enter' as a function`,
+        `Jest watch plugin ${pluginModulePath} must export 'enter' as a function`,
       );
     }
 
     const plugin: WatchPlugin = ((maybePlugin: any): WatchPlugin);
 
     if (RESERVED_KEYS.includes(maybePlugin.key)) {
       throw new Error(
-        `Jest watch plugin ${
-          pluginModulePath
-        } tried to register reserved key ${String.fromCodePoint(
+        `Jest watch plugin ${pluginModulePath} tried to register reserved key ${String.fromCodePoint(
           maybePlugin.key,
         )}`,
       );

packages/jest-cli/src/reporters/coverage_reporter.js

@@ -234,9 +234,7 @@ export default class CoverageReporter extends BaseReporter {
                 }
               } else if (actual < threshold) {
                 errors.push(
-                  `Jest: "${name}" coverage threshold for ${key} (${
-                    threshold
-                  }%) not met: ${actual}%`,
+                  `Jest: "${name}" coverage threshold for ${key} (${threshold}%) not met: ${actual}%`,
                 );
               }
             }

packages/pretty-format/README.md

@@ -197,8 +197,8 @@ result from either:
 ### test
 
 Write `test` so it can receive `val` argument of any type. To serialize
-**objects** which have certain properties, then a guarded expression like `val
-!= null && …` or more concise `val && …` prevents the following errors:
+**objects** which have certain properties, then a guarded expression like
+`val != null && …` or more concise `val && …` prevents the following errors:
 
 * `TypeError: Cannot read property 'whatever' of null`
 * `TypeError: Cannot read property 'whatever' of undefined`

packages/pretty-format/src/index.js

@@ -394,9 +394,7 @@ const getColorsHighlight = (options: OptionsReceived): Colors =>
       colors[key] = color;
     } else {
       throw new Error(
-        `pretty-format: Option "theme" has a key "${key}" whose value "${
-          value
-        }" is undefined in ansi-styles.`,
+        `pretty-format: Option "theme" has a key "${key}" whose value "${value}" is undefined in ansi-styles.`,
       );
     }
     return colors;

website/blog/2016-06-22-jest-13.md

@@ -51,8 +51,8 @@ either git or hg, a common thing in developer tools.
 * Added `jest.isMockFunction(jest.fn())` to test for mock functions.
 * Improved test reporter printing and added a test failure summary when running
   many tests.
-* Added support for mocking virtual modules through `jest.mock('Module',
-  implementation, {virtual: true})`.
+* Added support for mocking virtual modules through
+  `jest.mock('Module', implementation, {virtual: true})`.
 * Removed the `.haste_cache` folder. Jest now uses the operating system's
   preferred temporary file location.
 * Added the duration of individual tests in verbose mode.

website/blog/2016-07-27-jest-14.md

@@ -85,8 +85,9 @@ able to support a full, unmocked version of React Native. We are excited to
 launch experimental React Native support for Jest through the
 `jest-react-native` package.
 
-You can start using Jest with react-native by running `npm install --save-dev
-jest-react-native` and by adding the preset to your Jest configuration:
+You can start using Jest with react-native by running
+`npm install --save-dev jest-react-native` and by adding the preset to your Jest
+configuration:
 
 ```json
 "jest": {