facebook/jest
### [`v24.9.0`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2490)
[Compare Source](https://togithub.com/facebook/jest/compare/v24.8.0...v24.9.0)
##### Features
- `[expect]` Highlight substring differences when matcher fails, part 1 ([#8448](https://togithub.com/facebook/jest/pull/8448))
- `[expect]` Highlight substring differences when matcher fails, part 2 ([#8528](https://togithub.com/facebook/jest/pull/8528))
- `[expect]` Improve report when mock-spy matcher fails, part 1 ([#8640](https://togithub.com/facebook/jest/pull/8640))
- `[expect]` Improve report when mock-spy matcher fails, part 2 ([#8649](https://togithub.com/facebook/jest/pull/8649))
- `[expect]` Improve report when mock-spy matcher fails, part 3 ([#8697](https://togithub.com/facebook/jest/pull/8697))
- `[expect]` Improve report when mock-spy matcher fails, part 4 ([#8710](https://togithub.com/facebook/jest/pull/8710))
- `[expect]` Throw matcher error when received cannot be jasmine spy ([#8747](https://togithub.com/facebook/jest/pull/8747))
- `[expect]` Improve report when negative CalledWith assertion fails ([#8755](https://togithub.com/facebook/jest/pull/8755))
- `[expect]` Improve report when positive CalledWith assertion fails ([#8771](https://togithub.com/facebook/jest/pull/8771))
- `[expect]` Display equal values for ReturnedWith similar to CalledWith ([#8791](https://togithub.com/facebook/jest/pull/8791))
- `[expect, jest-snapshot]` Change color from green for some args in matcher hints ([#8812](https://togithub.com/facebook/jest/pull/8812))
- `[jest-snapshot]` Highlight substring differences when matcher fails, part 3 ([#8569](https://togithub.com/facebook/jest/pull/8569))
- `[jest-core]` Improve report when snapshots are obsolete ([#8448](https://togithub.com/facebook/jest/pull/8665))
- `[jest-cli]` Improve chai support (with detailed output, to match jest exceptions) ([#8454](https://togithub.com/facebook/jest/pull/8454))
- `[*]` Manage the global timeout with `--testTimeout` command line argument. ([#8456](https://togithub.com/facebook/jest/pull/8456))
- `[pretty-format]` Render custom displayName of memoized components ([#8546](https://togithub.com/facebook/jest/pull/8546))
- `[jest-validate]` Allow `maxWorkers` as part of the `jest.config.js` ([#8565](https://togithub.com/facebook/jest/pull/8565))
- `[jest-runtime]` Allow passing configuration objects to transformers ([#7288](https://togithub.com/facebook/jest/pull/7288))
- `[@jest/core, @jest/test-sequencer]` Support async sort in custom `testSequencer` ([#8642](https://togithub.com/facebook/jest/pull/8642))
- `[jest-runtime, @jest/fake-timers]` Add `jest.advanceTimersToNextTimer` ([#8713](https://togithub.com/facebook/jest/pull/8713))
- `[@jest-transform]` Extract transforming require logic within `jest-core` into `@jest-transform` ([#8756](https://togithub.com/facebook/jest/pull/8756))
- `[jest-matcher-utils]` Add color options to `matcherHint` ([#8795](https://togithub.com/facebook/jest/pull/8795))
- `[jest-circus/jest-jasmine2]` Give clearer output for Node assert errors ([#8792](https://togithub.com/facebook/jest/pull/8792))
- `[jest-runner]` Export all types in the type signature of `jest-runner` ([#8825](https://togithub.com/facebook/jest/pull/8825))
##### Fixes
- `[jest-cli]` Detect side-effect only imports when running `--onlyChanged` or `--changedSince` ([#8670](https://togithub.com/facebook/jest/pull/8670))
- `[jest-cli]` Allow `--maxWorkers` to work with % input again ([#8565](https://togithub.com/facebook/jest/pull/8565))
- `[babel-plugin-jest-hoist]` Expand list of whitelisted globals in global mocks ([#8429](https://togithub.com/facebook/jest/pull/8429))
- `[jest-core]` Make watch plugin initialization errors look nice ([#8422](https://togithub.com/facebook/jest/pull/8422))
- `[jest-snapshot]` Prevent inline snapshots from drifting when inline snapshots are updated ([#8492](https://togithub.com/facebook/jest/pull/8492))
- `[jest-haste-map]` Don't throw on missing mapper in Node crawler ([#8558](https://togithub.com/facebook/jest/pull/8558))
- `[jest-core]` Fix incorrect `passWithNoTests` warning ([#8595](https://togithub.com/facebook/jest/pull/8595))
- `[jest-snapshots]` Fix test retries that contain snapshots ([#8629](https://togithub.com/facebook/jest/pull/8629))
- `[jest-mock]` Fix incorrect assignments when restoring mocks in instances where they originally didn't exist ([#8631](https://togithub.com/facebook/jest/pull/8631))
- `[expect]` Fix stack overflow when matching objects with circular references ([#8687](https://togithub.com/facebook/jest/pull/8687))
- `[jest-haste-map]` Workaround a node >=12.5.0 bug that causes the process not to exit after tests have completed and cancerous memory growth ([#8787](https://togithub.com/facebook/jest/pull/8787))
##### Chore & Maintenance
- `[docs]` Replace FlowType with TypeScript in CONTRIBUTING.MD code conventions
- `[jest-leak-detector]` remove code repeat ([#8438](https://togithub.com/facebook/jest/pull/8438))
- `[docs]` Add example to `jest.requireActual` ([#8482](https://togithub.com/facebook/jest/pull/8482))
- `[docs]` Add example to `jest.mock` for mocking ES6 modules with the `factory` parameter ([#8550](https://togithub.com/facebook/jest/pull/8550))
- `[docs]` Add information about using `jest.doMock` with ES6 imports ([#8573](https://togithub.com/facebook/jest/pull/8573))
- `[docs]` Fix variable name in custom-matcher-api code example ([#8582](https://togithub.com/facebook/jest/pull/8582))
- `[docs]` Fix example used in custom environment docs ([#8617](https://togithub.com/facebook/jest/pull/8617))
- `[docs]` Updated react tutorial to refer to new package of react-testing-library ([@testing-library/react](https://togithub.com/testing-library/react)) ([#8753](https://togithub.com/facebook/jest/pull/8753))
- `[docs]` Updated imports of react-testing-library to [@testing-library/react](https://togithub.com/testing-library/react) in website ([#8757](https://togithub.com/facebook/jest/pull/8757))
- `[jest-core]` Add `getVersion` (moved from `jest-cli`) ([#8706](https://togithub.com/facebook/jest/pull/8706))
- `[docs]` Fix MockFunctions example that was using toContain instead of toContainEqual ([#8765](https://togithub.com/facebook/jest/pull/8765))
- `[*]` Make sure copyright header comment includes license ([#8783](https://togithub.com/facebook/jest/pull/8783))
- `[*]` Check copyright and license as one joined substring ([#8815](https://togithub.com/facebook/jest/pull/8815))
- `[docs]` Fix WatchPlugins `jestHooks.shouldRunTestSuite` example that receives an object ([#8784](https://togithub.com/facebook/jest/pull/8784))
- `[*]` Enforce LF line endings ([#8809](https://togithub.com/facebook/jest/pull/8809))
- `[pretty-format]` Delete obsolete link and simplify structure in README ([#8824](https://togithub.com/facebook/jest/pull/8824))
- `[docs]` Fix broken transform link on webpack page ([#9155](https://togithub.com/facebook/jest/pull/9155))
##### Performance
- `[jest-watcher]` Minor optimization for JestHook ([#8746](https://togithub.com/facebook/jest/pull/8746))
- `[@jest/reporters]` Prevent runaway CPU usage with `--notify` on macOS ([#8831](https://togithub.com/facebook/jest/pull/8831))
### [`v24.8.0`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2480)
[Compare Source](https://togithub.com/facebook/jest/compare/v24.7.1...v24.8.0)
##### Features
- `[jest-circus]` Bind to Circus events via an optional event handler on any custom env ([#8344](https://togithub.com/facebook/jest/pull/8344))
- `[expect]` Improve report when matcher fails, part 15 ([#8281](https://togithub.com/facebook/jest/pull/8281))
- `[jest-cli]` Update `--forceExit` and "did not exit for one second" message colors ([#8329](https://togithub.com/facebook/jest/pull/8329))
- `[expect]` Improve report when matcher fails, part 16 ([#8306](https://togithub.com/facebook/jest/pull/8306))
- `[jest-runner]` Pass docblock pragmas to TestEnvironment constructor ([#8320](https://togithub.com/facebook/jest/pull/8320))
- `[docs]` Add DynamoDB guide ([#8319](https://togithub.com/facebook/jest/pull/8319))
- `[expect]` Improve report when matcher fails, part 17 ([#8349](https://togithub.com/facebook/jest/pull/8349))
- `[expect]` Improve report when matcher fails, part 18 ([#8356](https://togithub.com/facebook/jest/pull/8356))
- `[expect]` Improve report when matcher fails, part 19 ([#8367](https://togithub.com/facebook/jest/pull/8367))
##### Fixes
- `[jest-each]` Fix bug with placeholder values ([#8289](https://togithub.com/facebook/jest/pull/8289))
- `[jest-snapshot]` Inline snapshots: do not indent empty lines ([#8277](https://togithub.com/facebook/jest/pull/8277))
- `[@jest/runtime, @jest/transform]` Allow custom transforms for JSON dependencies ([#8278](https://togithub.com/facebook/jest/pull/8278))
- `[jest-core]` Make `detectOpenHandles` imply `runInBand` ([#8283](https://togithub.com/facebook/jest/pull/8283))
- `[jest-haste-map]` Fix the `mapper` option which was incorrectly ignored ([#8299](https://togithub.com/facebook/jest/pull/8299))
- `[jest-jasmine2]` Fix describe return value warning being shown if the describe function throws ([#8335](https://togithub.com/facebook/jest/pull/8335))
- `[jest-environment-jsdom]` Re-declare global prototype of JSDOMEnvironment ([#8352](https://togithub.com/facebook/jest/pull/8352))
- `[jest-snapshot]` Handle arrays when merging snapshots ([#7089](https://togithub.com/facebook/jest/pull/7089))
- `[expect]` Extract names of async and generator functions ([#8362](https://togithub.com/facebook/jest/pull/8362))
- `[jest-runtime]` Fix virtual mocks not being unmockable after previously being mocked ([#8396](https://togithub.com/facebook/jest/pull/8396))
- `[jest-transform]` Replace special characters in transform cache filenames to support Windows ([#8353](https://togithub.com/facebook/jest/pull/8353))
- `[jest-config]` Allow exactly one project ([#7498](https://togithub.com/facebook/jest/pull/7498))
##### Chore & Maintenance
- `[expect]` Fix label and add opposite assertion for toEqual tests ([#8288](https://togithub.com/facebook/jest/pull/8288))
- `[docs]` Mention Jest MongoDB Preset ([#8318](https://togithub.com/facebook/jest/pull/8318))
- `[@jest/reporters]` Migrate away from `istanbul-api` ([#8294](https://togithub.com/facebook/jest/pull/8294))
- `[*]` Delete obsolete emails tag from header comment in test files ([#8377](https://togithub.com/facebook/jest/pull/8377))
- `[expect]` optimize compare nodes ([#8368](https://togithub.com/facebook/jest/pull/8368))
- `[docs]` Fix typo in MockFunctionAPI.md ([#8406](https://togithub.com/facebook/jest/pull/8406))
- `[LICENSE]` Follow copyright header guidelines and delete For Jest software ([#8428](https://togithub.com/facebook/jest/pull/8428))
##### Performance
- `[jest-runtime]` Fix module registry memory leak ([#8282](https://togithub.com/facebook/jest/pull/8282))
- `[jest-resolve]` optimize resolve module path ([#8388](https://togithub.com/facebook/jest/pull/8388))
- `[jest-resolve]` cache current directory ([#8412](https://togithub.com/facebook/jest/pull/8412))
- `[jest-get-type]` Simplify checking for primitive ([#8416](https://togithub.com/facebook/jest/pull/8416))
### [`v24.7.1`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2471)
[Compare Source](https://togithub.com/facebook/jest/compare/v24.7.0...v24.7.1)
##### Fixes
- `[@jest/config]` Normalize `testSequencer` to its absolute path ([#8267](https://togithub.com/facebook/jest/pull/8267))
- `[@jest/console]` Print to stderr when calling `console.error`, `console.warn` or `console.assert` using the `jest-runtime` CLI ([#8261](https://togithub.com/facebook/jest/pull/8261))
### [`v24.7.0`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2470)
[Compare Source](https://togithub.com/facebook/jest/compare/v24.6.0...v24.7.0)
##### Features
- `[@jest/core, @jest/test-sequencer]` Move `testSequencer` to individual package `@jest/test-sequencer` ([#8223](https://togithub.com/facebook/jest/pull/8223))
- `[@jest/core, jest-cli, jest-config]` Add option `testSequencer` allow user use custom sequencer. ([#8223](https://togithub.com/facebook/jest/pull/8223))
##### Fixes
- `[expect]` Add negative equality tests for iterables ([#8260](https://togithub.com/facebook/jest/pull/8260))
- `[jest-haste-map]` Resolve fs watcher EMFILE error ([#8258](https://togithub.com/facebook/jest/pull/8258))
##### Chore & Maintenance
- `[expect]` Remove repetition of matcherName and options in matchers ([#8224](https://togithub.com/facebook/jest/pull/8224))
##### Performance
### [`v24.6.0`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2460)
[Compare Source](https://togithub.com/facebook/jest/compare/v24.5.0...v24.6.0)
##### Features
- `[expect]`: Improve report when matcher fails, part 13 ([#8077](https://togithub.com/facebook/jest/pull/8077))
- `[@jest/core]` Filter API pre-filter setup hook ([#8142](https://togithub.com/facebook/jest/pull/8142))
- `[jest-snapshot]` Improve report when matcher fails, part 14 ([#8132](https://togithub.com/facebook/jest/pull/8132))
- `[@jest/reporter]` Display todo and skip test descriptions when verbose is true ([#8038](https://togithub.com/facebook/jest/pull/8038))
- `[jest-runner]` Support default exports for test environments ([#8163](https://togithub.com/facebook/jest/pull/8163))
- `[pretty-format]` Support React.Suspense ([#8180](https://togithub.com/facebook/jest/pull/8180))
- `[jest-snapshot]` Indent inline snapshots ([#8198](https://togithub.com/facebook/jest/pull/8198))
- `[jest-config]` Support colors in `displayName` configuration ([#8025](https://togithub.com/facebook/jest/pull/8025))
##### Fixes
- `[jest-circus]` Fix test retries with beforeAll/beforeEach failures ([#8227](https://togithub.com/facebook/jest/pull/8227))
- `[expect]` Fix circular references in iterable equality ([#8160](https://togithub.com/facebook/jest/pull/8160))
- `[jest-changed-files]` Change method of obtaining git root ([#8052](https://togithub.com/facebook/jest/pull/8052))
- `[jest-each]` Fix test function type ([#8145](https://togithub.com/facebook/jest/pull/8145))
- `[jest-fake-timers]` `getTimerCount` not taking immediates and ticks into account ([#8139](https://togithub.com/facebook/jest/pull/8139))
- `[jest-runtime]` Allow json file as manual mock ([#8159](https://togithub.com/facebook/jest/pull/8159))
- `[pretty-format]` Print `BigInt` as a readable number instead of `{}` ([#8138](https://togithub.com/facebook/jest/pull/8138))
- `[jest-core]` Fix ability to transform dependencies required from globalSetup script ([#8143](https://togithub.com/facebook/jest/pull/8143))
- `[@jest/reporters]` Fix Cannot read property converageData of null ([#8168](https://togithub.com/facebook/jest/pull/8168))
- `[jest-worker]` `JEST_WORKER_ID` starts at 1 ([#8205](https://togithub.com/facebook/jest/pull/8205))
- `[jest-config]` Use default cwd even if config contains a cwd property ([#7923](https://togithub.com/facebook/jest/pull/7923))
- `[jest-resolve-dependencies]`: Remove internal peer dependencies ([#8215](https://togithub.com/facebook/jest/pull/8215))
- `[jest-resolve]`: Remove internal peer dependencies ([#8215](https://togithub.com/facebook/jest/pull/8215))
- `[jest-snapshot]`: Remove internal peer dependencies ([#8215](https://togithub.com/facebook/jest/pull/8215))
- `[jest-resolve]` Fix requireActual with moduleNameMapper ([#8210](https://togithub.com/facebook/jest/pull/8210))
- `[jest-haste-map]` Fix haste map duplicate detection in watch mode ([#8237](https://togithub.com/facebook/jest/pull/8237))
##### Chore & Maintenance
- `[*]` Remove flow from code base ([#8061](https://togithub.com/facebook/jest/pull/8061))
- `[*]` Use property initializer syntax in Jest codebase ([#8117](https://togithub.com/facebook/jest/pull/8117))
- `[*]` Move [@types/node](https://togithub.com/types/node) to the root package.json ([#8129](https://togithub.com/facebook/jest/pull/8129))
- `[*]` Add documentation and tests related to auto-mocking ([#8099](https://togithub.com/facebook/jest/pull/8099))
- `[*]` Add `jest-watch-typeahead` as a devDependency ([#6449](https://togithub.com/facebook/jest/pull/6449))
- `[*]` upgrade TS to 3.4.0-dev\* for incremental builds ([#8149](https://togithub.com/facebook/jest/pull/8149))
- `[docs]` Improve description of optional arguments in ExpectAPI.md ([#8126](https://togithub.com/facebook/jest/pull/8126))
##### Performance
- `[jest-haste-map]` Optimize haste map data structure for serialization/deserialization ([#8171](https://togithub.com/facebook/jest/pull/8171))
- `[jest-haste-map]` Avoid persisting haste map or processing files when not changed ([#8153](https://togithub.com/facebook/jest/pull/8153))
- `[jest-core]` Improve performance of SearchSource.findMatchingTests by 15% ([#8184](https://togithub.com/facebook/jest/pull/8184))
- `[jest-resolve]` Optimize internal cache lookup performance ([#8183](https://togithub.com/facebook/jest/pull/8183))
- `[jest-core]` Dramatically improve watch mode performance ([#8201](https://togithub.com/facebook/jest/pull/8201))
- `[jest-transform]` Cache regular expression instead of creating anew for every file in ScriptTransformer ([#8235](https://togithub.com/facebook/jest/pull/8235))
- `[jest-core]` Fix memory leak of source map info and minor performance improvements ([#8234](https://togithub.com/facebook/jest/pull/8234))
- `[jest-console]` Fix memory leak by releasing console output reference when printed to stdout ([#8233](https://togithub.com/facebook/jest/pull/8233))
- `[jest-runtime]` Use `Map` instead of `Object` for module registry ([#8232](https://togithub.com/facebook/jest/pull/8232))
### [`v24.5.0`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2450)
[Compare Source](https://togithub.com/facebook/jest/compare/v24.4.0...v24.5.0)
##### Features
- `[jest-haste-map]` Expose `throwOnModuleCollision` via `config.haste` ([#8113](https://togithub.com/facebook/jest/pull/8113))
##### Chore & Maintenance
- `[expect]` Export `Matchers` interface from `expect` ([#8093](https://togithub.com/facebook/jest/pull/8093))
### [`v24.4.0`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2440)
[Compare Source](https://togithub.com/facebook/jest/compare/v24.3.1...v24.4.0)
##### Features
- `[jest-resolve]` Now supports PnP environment without plugins ([#8094](https://togithub.com/facebook/jest/pull/8094))
##### Fixes
- `[expect]` Compare DOM nodes even if there are multiple Node classes ([#8064](https://togithub.com/facebook/jest/pull/8064))
- `[jest-worker]` `worker.getStdout()` can return `null` ([#8083](https://togithub.com/facebook/jest/pull/8083))
- `[jest-worker]` Re-attach stdout and stderr from new processes/threads created after retries ([#8087](https://togithub.com/facebook/jest/pull/8087))
- `[jest-reporters/jest-runner]` Serialize `changedFiles` passed to workers ([#8090](https://togithub.com/facebook/jest/pull/8090))
##### Chore & Maintenance
- `[*]` Make sure to include `d.ts` files in the tarball when building ([#8086](https://togithub.com/facebook/jest/pull/8086))
### [`v24.3.1`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2431)
[Compare Source](https://togithub.com/facebook/jest/compare/v24.3.0...v24.3.1)
##### Fixes
- `[jest-cli]` export functions compatible with `import {default}` ([#8080](https://togithub.com/facebook/jest/pull/8080))
- `[jest-worker]`: Fix retries and error notification in workers ([#8079](https://togithub.com/facebook/jest/pull/8079))
##### Chore & Maintenance
- `[pretty-format]`: Use `react-is` instead of manual `$$typeof` checks ([#8060](https://togithub.com/facebook/jest/pull/8060))
### [`v24.3.0`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2430)
[Compare Source](https://togithub.com/facebook/jest/compare/v24.1.0...v24.3.0)
We skipped 24.2.0 because a draft was accidentally published. Please use `24.3.0` or a newer version instead.
##### Features
- `[expect]`: Improve report when matcher fails, part 10 ([#7960](https://togithub.com/facebook/jest/pull/7960))
- `[expect]`: Improve report when matcher fails, part 11 ([#8008](https://togithub.com/facebook/jest/pull/8008))
- `[expect]`: Improve report when matcher fails, part 12 ([#8033](https://togithub.com/facebook/jest/pull/8033))
- `[expect]`: Improve report when matcher fails, part 7 ([#7866](https://togithub.com/facebook/jest/pull/7866))
- `[expect]`: Improve report when matcher fails, part 8 ([#7876](https://togithub.com/facebook/jest/pull/7876))
- `[expect]`: Improve report when matcher fails, part 9 ([#7940](https://togithub.com/facebook/jest/pull/7940))
- `[jest-circus/jest-jasmine2]` Warn if describe returns a value ([#7852](https://togithub.com/facebook/jest/pull/7852))
- `[jest-config]` Print error information on preset normalization error ([#7935](https://togithub.com/facebook/jest/pull/7935))
- `[jest-get-type]` Add `isPrimitive` function ([#7708](https://togithub.com/facebook/jest/pull/7708))
- `[jest-haste-map]` Add `skipPackageJson` option ([#7778](https://togithub.com/facebook/jest/pull/7778))
- `[jest-util]` Add `isPromise` ([#7852](https://togithub.com/facebook/jest/pull/7852))
- `[pretty-format]` Support `React.memo` ([#7891](https://togithub.com/facebook/jest/pull/7891))
##### Fixes
- `[expect]` Fix `toStrictEqual` not considering arrays with objects having undefined values correctly ([#7938](https://togithub.com/facebook/jest/pull/7938))
- `[expect]` Fix custom async matcher stack trace ([#7652](https://togithub.com/facebook/jest/pull/7652))
- `[expect]` Fix non-object received value in toHaveProperty ([#7986](https://togithub.com/facebook/jest/pull/7986), [#8067](https://togithub.com/facebook/jest/pull/8067))
- `[expect]` Fix non-symmetric equal for Number ([#7948](https://togithub.com/facebook/jest/pull/7948))
- `[expect]` Remove duck typing and obsolete browser support code when comparing DOM nodes and use DOM-Level-3 API instead ([#7995](https://togithub.com/facebook/jest/pull/7995))
- `[jest-changed-files]` Fix `getChangedFilesFromRoots` to not return parts of the commit messages as if they were files, when the commit messages contained multiple paragraphs ([#7961](https://togithub.com/facebook/jest/pull/7961))
- `[jest-changed-files]` Fix pattern for HG changed files ([#8066](https://togithub.com/facebook/jest/pull/8066))
- `[jest-changed-files]` Improve default file selection for Mercurial repos ([#7880](https://togithub.com/facebook/jest/pull/7880))
- `[jest-circus]` Fix bug with test.only ([#7888](https://togithub.com/facebook/jest/pull/7888))
- `[jest-circus]`: Throw explicit error when errors happen after test is considered complete ([#8005](https://togithub.com/facebook/jest/pull/8005))
- `[jest-cli]` Fix prototype pollution vulnerability in dependency ([#7904](https://togithub.com/facebook/jest/pull/7904))
- `[jest-cli]` Refactor `-o` and `--coverage` combined ([#7611](https://togithub.com/facebook/jest/pull/7611))
- `[jest-environment-node]` Add missing globals: TextEncoder and TextDecoder ([#8022](https://togithub.com/facebook/jest/pull/8022))
- `[jest-haste-map]` Enforce uniqueness in names (mocks and haste ids) ([#8002](https://togithub.com/facebook/jest/pull/8002))
- `[jest-jasmine2]`: Throw explicit error when errors happen after test is considered complete ([#8005](https://togithub.com/facebook/jest/pull/8005))
- `[jest-mock]` Adds a type check to `prototype` to allow mocks of objects with a primitive `prototype` property. ([#8040](https://togithub.com/facebook/jest/pull/8040))
- `[jest-transform]` Normalize config and remove unnecessary checks, convert `TestUtils.js` to TypeScript ([#7801](https://togithub.com/facebook/jest/pull/7801))
- `[jest-util]`Make sure to not fail if unable to assign `toStringTag` to the `process` object, which is read only in Node 12 ([#8050](https://togithub.com/facebook/jest/pull/8050))
- `[jest-validate]` Fix validating async functions ([#7894](https://togithub.com/facebook/jest/issues/7894))
- `[jest-worker]` Fix `jest-worker` when using pre-allocated jobs ([#7934](https://togithub.com/facebook/jest/pull/7934))
- `[static]` Remove console log '-' on the front page ([#7977](https://togithub.com/facebook/jest/pull/7977))
##### Chore & Maintenance
- `[*]`: Setup building, linting and testing of TypeScript ([#7808](https://togithub.com/facebook/jest/pull/7808), [#7855](https://togithub.com/facebook/jest/pull/7855), [#7951](https://togithub.com/facebook/jest/pull/7951))
- `[@jest/console]`: Extract custom `console` implementations from `jest-util` into a new separate package ([#8030](https://togithub.com/facebook/jest/pull/8030))
- `[@jest/core]` Create new package, which is `jest-cli` minus `yargs` and `prompts` ([#7696](https://togithub.com/facebook/jest/pull/7696))
- `[@jest/core]`: Migrate to TypeScript ([#7998](https://togithub.com/facebook/jest/pull/7998))
- `[@jest/fake-timers]`: Extract FakeTimers class from `jest-util` into a new separate package ([#7987](https://togithub.com/facebook/jest/pull/7987))
- `[@jest/reporter]`: New package extracted from `jest-cli` ([#7902](https://togithub.com/facebook/jest/pull/7902))
- `[@jest/reporters]`: Migrate to TypeScript ([#7994](https://togithub.com/facebook/jest/pull/7994), [#8045](https://togithub.com/facebook/jest/pull/8045))
- `[@jest/source-map]`: Extract `getCallsite` function from `jest-util` into a new separate package ([#8029](https://togithub.com/facebook/jest/pull/8029))
- `[@jest/test-result]`: Extract TestResult types and helpers into a new separate package ([#8034](https://togithub.com/facebook/jest/pull/8034))
- `[@jest/transform]`: Migrate to TypeScript ([#7918](https://togithub.com/facebook/jest/pull/7918), [#7945](https://togithub.com/facebook/jest/pull/7945))
- `[@jest/transform]`: New package extracted from `jest-runtime` ([#7915](https://togithub.com/facebook/jest/pull/7915))
- `[@jest/types]`: New package to handle shared types ([#7834](https://togithub.com/facebook/jest/pull/7834))
- `[babel-jest]`: Migrate to TypeScript ([#7862](https://togithub.com/facebook/jest/pull/7862))
- `[babel-plugin-jest-hoist]`: Migrate to TypeScript ([#7898](https://togithub.com/facebook/jest/pull/7898))
- `[diff-sequences]`: Migrate to Typescript ([#7820](https://togithub.com/facebook/jest/pull/7820))
- `[docs]` Add missing import to docs ([#7928](https://togithub.com/facebook/jest/pull/7928))
- `[docs]` Update automock configuration, add note related to manual mocks ([#8051](https://togithub.com/facebook/jest/pull/8051))
- `[docs]` Update/Organize TestSequencer and testSchedulerHelper code comments([#7984](https://togithub.com/facebook/jest/pull/7984))
- `[docs]`: Fix image paths in SnapshotTesting.md for current and version 24 ([#7872](https://togithub.com/facebook/jest/pull/7872))
- `[docs]`: Improve runAllTimers doc (it exhausts the micro-task queue) ([#8031](https://togithub.com/facebook/jest/pull/8031))
- `[docs]`: Update CONTRIBUTING.md to add information about running jest with `jest-circus` locally ([#8013](https://togithub.com/facebook/jest/pull/8013)).
- `[expect]`: Migrate to TypeScript ([#7919](https://togithub.com/facebook/jest/pull/7919), [#8028](https://togithub.com/facebook/jest/pull/8028))
- `[jest-changed-files]`: Migrate to TypeScript ([#7827](https://togithub.com/facebook/jest/pull/7827))
- `[jest-circus]`: Migrate to TypeScript ([#7916](https://togithub.com/facebook/jest/pull/7916))
- `[jest-cli]`: Migrate to TypeScript ([#8024](https://togithub.com/facebook/jest/pull/8024))
- `[jest-diff]`: Migrate to TypeScript ([#7824](https://togithub.com/facebook/jest/pull/7824), [#8027](https://togithub.com/facebook/jest/pull/8027))
- `[jest-docblock]`: Migrate to TypeScript ([#7836](https://togithub.com/facebook/jest/pull/7836))
- `[jest-each]`: Migrate to Typescript ([#8007](https://togithub.com/facebook/jest/pull/8007))
- `[jest-each]`: Refactor into multiple files with better types ([#8018](https://togithub.com/facebook/jest/pull/8018))
- `[jest-environment-jsdom]`: Migrate to TypeScript ([#7985](https://togithub.com/facebook/jest/pull/8003))
- `[jest-environment-node]`: Migrate to TypeScript ([#7985](https://togithub.com/facebook/jest/pull/7985))
- `[jest-get-type]`: Migrate to TypeScript ([#7818](https://togithub.com/facebook/jest/pull/7818))
- `[jest-haste-map]`: Migrate to TypeScript ([#7854](https://togithub.com/facebook/jest/pull/7854), [#7951](https://togithub.com/facebook/jest/pull/7951))
- `[jest-jasmine2]`: TS migration ([#7970](https://togithub.com/facebook/jest/pull/7970))
- `[jest-leak-detector]`: Migrate to TypeScript ([#7825](https://togithub.com/facebook/jest/pull/7825))
- `[jest-matcher-utils]`: Migrate to TypeScript ([#7835](https://togithub.com/facebook/jest/pull/7835))
- `[jest-message-util]`: Migrate to TypeScript ([#7834](https://togithub.com/facebook/jest/pull/7834))
- `[jest-mock]`: Migrate to TypeScript ([#7847](https://togithub.com/facebook/jest/pull/7847), [#7850](https://togithub.com/facebook/jest/pull/7850), [#7971](https://togithub.com/facebook/jest/pull/7971))
- `[jest-phabricator]`: Migrate to TypeScript ([#7965](https://togithub.com/facebook/jest/pull/7965))
- `[jest-regex-util]`: Migrate to TypeScript ([#7822](https://togithub.com/facebook/jest/pull/7822))
- `[jest-repl]`: Migrate to TypeScript ([#8000](https://togithub.com/facebook/jest/pull/8000))
- `[jest-resolve-dependencies]`: Migrate to TypeScript ([#7922](https://togithub.com/facebook/jest/pull/7922))
- `[jest-resolve]`: Migrate to TypeScript ([#7871](https://togithub.com/facebook/jest/pull/7871))
- `[jest-runner]`: Migrate to TypeScript ([#7968](https://togithub.com/facebook/jest/pull/7968))
- `[jest-runtime]`: Migrate to TypeScript ([#7964](https://togithub.com/facebook/jest/pull/7964), [#7988](https://togithub.com/facebook/jest/pull/7988))
- `[jest-serializer]`: Migrate to TypeScript ([#7841](https://togithub.com/facebook/jest/pull/7841))
- `[jest-snapshot]`: Migrate to TypeScript ([#7899](https://togithub.com/facebook/jest/pull/7899))
- `[jest-util]`: Migrate to TypeScript ([#7844](https://togithub.com/facebook/jest/pull/7844), [#8021](https://togithub.com/facebook/jest/pull/8021))
- `[jest-validate]`: Migrate to TypeScript ([#7991](https://togithub.com/facebook/jest/pull/7991))
- `[jest-watcher]`: Migrate to TypeScript ([#7843](https://togithub.com/facebook/jest/pull/7843))
- `[jest-worker]`: Migrate to TypeScript ([#7853](https://togithub.com/facebook/jest/pull/7853))
- `[jest]`: Migrate to TypeScript ([#8024](https://togithub.com/facebook/jest/pull/8024))
- `[pretty-format]`: Migrate to TypeScript ([#7809](https://togithub.com/facebook/jest/pull/7809), [#7809](https://togithub.com/facebook/jest/pull/7972))
##### Performance
- `[jest-haste-map]` Optimize haste map tracking of deleted files with Watchman. ([#8056](https://togithub.com/facebook/jest/pull/8056))
Configuration
📅 Schedule: At any time (no schedule defined).
🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.
♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about these updates again.
[ ] If you want to rebase/retry this PR, check this box.
This PR contains the following updates:
24.1.0
->24.9.0
24.1.0
->24.9.0
Release Notes
facebook/jest
### [`v24.9.0`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2490) [Compare Source](https://togithub.com/facebook/jest/compare/v24.8.0...v24.9.0) ##### Features - `[expect]` Highlight substring differences when matcher fails, part 1 ([#8448](https://togithub.com/facebook/jest/pull/8448)) - `[expect]` Highlight substring differences when matcher fails, part 2 ([#8528](https://togithub.com/facebook/jest/pull/8528)) - `[expect]` Improve report when mock-spy matcher fails, part 1 ([#8640](https://togithub.com/facebook/jest/pull/8640)) - `[expect]` Improve report when mock-spy matcher fails, part 2 ([#8649](https://togithub.com/facebook/jest/pull/8649)) - `[expect]` Improve report when mock-spy matcher fails, part 3 ([#8697](https://togithub.com/facebook/jest/pull/8697)) - `[expect]` Improve report when mock-spy matcher fails, part 4 ([#8710](https://togithub.com/facebook/jest/pull/8710)) - `[expect]` Throw matcher error when received cannot be jasmine spy ([#8747](https://togithub.com/facebook/jest/pull/8747)) - `[expect]` Improve report when negative CalledWith assertion fails ([#8755](https://togithub.com/facebook/jest/pull/8755)) - `[expect]` Improve report when positive CalledWith assertion fails ([#8771](https://togithub.com/facebook/jest/pull/8771)) - `[expect]` Display equal values for ReturnedWith similar to CalledWith ([#8791](https://togithub.com/facebook/jest/pull/8791)) - `[expect, jest-snapshot]` Change color from green for some args in matcher hints ([#8812](https://togithub.com/facebook/jest/pull/8812)) - `[jest-snapshot]` Highlight substring differences when matcher fails, part 3 ([#8569](https://togithub.com/facebook/jest/pull/8569)) - `[jest-core]` Improve report when snapshots are obsolete ([#8448](https://togithub.com/facebook/jest/pull/8665)) - `[jest-cli]` Improve chai support (with detailed output, to match jest exceptions) ([#8454](https://togithub.com/facebook/jest/pull/8454)) - `[*]` Manage the global timeout with `--testTimeout` command line argument. ([#8456](https://togithub.com/facebook/jest/pull/8456)) - `[pretty-format]` Render custom displayName of memoized components ([#8546](https://togithub.com/facebook/jest/pull/8546)) - `[jest-validate]` Allow `maxWorkers` as part of the `jest.config.js` ([#8565](https://togithub.com/facebook/jest/pull/8565)) - `[jest-runtime]` Allow passing configuration objects to transformers ([#7288](https://togithub.com/facebook/jest/pull/7288)) - `[@jest/core, @jest/test-sequencer]` Support async sort in custom `testSequencer` ([#8642](https://togithub.com/facebook/jest/pull/8642)) - `[jest-runtime, @jest/fake-timers]` Add `jest.advanceTimersToNextTimer` ([#8713](https://togithub.com/facebook/jest/pull/8713)) - `[@jest-transform]` Extract transforming require logic within `jest-core` into `@jest-transform` ([#8756](https://togithub.com/facebook/jest/pull/8756)) - `[jest-matcher-utils]` Add color options to `matcherHint` ([#8795](https://togithub.com/facebook/jest/pull/8795)) - `[jest-circus/jest-jasmine2]` Give clearer output for Node assert errors ([#8792](https://togithub.com/facebook/jest/pull/8792)) - `[jest-runner]` Export all types in the type signature of `jest-runner` ([#8825](https://togithub.com/facebook/jest/pull/8825)) ##### Fixes - `[jest-cli]` Detect side-effect only imports when running `--onlyChanged` or `--changedSince` ([#8670](https://togithub.com/facebook/jest/pull/8670)) - `[jest-cli]` Allow `--maxWorkers` to work with % input again ([#8565](https://togithub.com/facebook/jest/pull/8565)) - `[babel-plugin-jest-hoist]` Expand list of whitelisted globals in global mocks ([#8429](https://togithub.com/facebook/jest/pull/8429)) - `[jest-core]` Make watch plugin initialization errors look nice ([#8422](https://togithub.com/facebook/jest/pull/8422)) - `[jest-snapshot]` Prevent inline snapshots from drifting when inline snapshots are updated ([#8492](https://togithub.com/facebook/jest/pull/8492)) - `[jest-haste-map]` Don't throw on missing mapper in Node crawler ([#8558](https://togithub.com/facebook/jest/pull/8558)) - `[jest-core]` Fix incorrect `passWithNoTests` warning ([#8595](https://togithub.com/facebook/jest/pull/8595)) - `[jest-snapshots]` Fix test retries that contain snapshots ([#8629](https://togithub.com/facebook/jest/pull/8629)) - `[jest-mock]` Fix incorrect assignments when restoring mocks in instances where they originally didn't exist ([#8631](https://togithub.com/facebook/jest/pull/8631)) - `[expect]` Fix stack overflow when matching objects with circular references ([#8687](https://togithub.com/facebook/jest/pull/8687)) - `[jest-haste-map]` Workaround a node >=12.5.0 bug that causes the process not to exit after tests have completed and cancerous memory growth ([#8787](https://togithub.com/facebook/jest/pull/8787)) ##### Chore & Maintenance - `[docs]` Replace FlowType with TypeScript in CONTRIBUTING.MD code conventions - `[jest-leak-detector]` remove code repeat ([#8438](https://togithub.com/facebook/jest/pull/8438)) - `[docs]` Add example to `jest.requireActual` ([#8482](https://togithub.com/facebook/jest/pull/8482)) - `[docs]` Add example to `jest.mock` for mocking ES6 modules with the `factory` parameter ([#8550](https://togithub.com/facebook/jest/pull/8550)) - `[docs]` Add information about using `jest.doMock` with ES6 imports ([#8573](https://togithub.com/facebook/jest/pull/8573)) - `[docs]` Fix variable name in custom-matcher-api code example ([#8582](https://togithub.com/facebook/jest/pull/8582)) - `[docs]` Fix example used in custom environment docs ([#8617](https://togithub.com/facebook/jest/pull/8617)) - `[docs]` Updated react tutorial to refer to new package of react-testing-library ([@testing-library/react](https://togithub.com/testing-library/react)) ([#8753](https://togithub.com/facebook/jest/pull/8753)) - `[docs]` Updated imports of react-testing-library to [@testing-library/react](https://togithub.com/testing-library/react) in website ([#8757](https://togithub.com/facebook/jest/pull/8757)) - `[jest-core]` Add `getVersion` (moved from `jest-cli`) ([#8706](https://togithub.com/facebook/jest/pull/8706)) - `[docs]` Fix MockFunctions example that was using toContain instead of toContainEqual ([#8765](https://togithub.com/facebook/jest/pull/8765)) - `[*]` Make sure copyright header comment includes license ([#8783](https://togithub.com/facebook/jest/pull/8783)) - `[*]` Check copyright and license as one joined substring ([#8815](https://togithub.com/facebook/jest/pull/8815)) - `[docs]` Fix WatchPlugins `jestHooks.shouldRunTestSuite` example that receives an object ([#8784](https://togithub.com/facebook/jest/pull/8784)) - `[*]` Enforce LF line endings ([#8809](https://togithub.com/facebook/jest/pull/8809)) - `[pretty-format]` Delete obsolete link and simplify structure in README ([#8824](https://togithub.com/facebook/jest/pull/8824)) - `[docs]` Fix broken transform link on webpack page ([#9155](https://togithub.com/facebook/jest/pull/9155)) ##### Performance - `[jest-watcher]` Minor optimization for JestHook ([#8746](https://togithub.com/facebook/jest/pull/8746)) - `[@jest/reporters]` Prevent runaway CPU usage with `--notify` on macOS ([#8831](https://togithub.com/facebook/jest/pull/8831)) ### [`v24.8.0`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2480) [Compare Source](https://togithub.com/facebook/jest/compare/v24.7.1...v24.8.0) ##### Features - `[jest-circus]` Bind to Circus events via an optional event handler on any custom env ([#8344](https://togithub.com/facebook/jest/pull/8344)) - `[expect]` Improve report when matcher fails, part 15 ([#8281](https://togithub.com/facebook/jest/pull/8281)) - `[jest-cli]` Update `--forceExit` and "did not exit for one second" message colors ([#8329](https://togithub.com/facebook/jest/pull/8329)) - `[expect]` Improve report when matcher fails, part 16 ([#8306](https://togithub.com/facebook/jest/pull/8306)) - `[jest-runner]` Pass docblock pragmas to TestEnvironment constructor ([#8320](https://togithub.com/facebook/jest/pull/8320)) - `[docs]` Add DynamoDB guide ([#8319](https://togithub.com/facebook/jest/pull/8319)) - `[expect]` Improve report when matcher fails, part 17 ([#8349](https://togithub.com/facebook/jest/pull/8349)) - `[expect]` Improve report when matcher fails, part 18 ([#8356](https://togithub.com/facebook/jest/pull/8356)) - `[expect]` Improve report when matcher fails, part 19 ([#8367](https://togithub.com/facebook/jest/pull/8367)) ##### Fixes - `[jest-each]` Fix bug with placeholder values ([#8289](https://togithub.com/facebook/jest/pull/8289)) - `[jest-snapshot]` Inline snapshots: do not indent empty lines ([#8277](https://togithub.com/facebook/jest/pull/8277)) - `[@jest/runtime, @jest/transform]` Allow custom transforms for JSON dependencies ([#8278](https://togithub.com/facebook/jest/pull/8278)) - `[jest-core]` Make `detectOpenHandles` imply `runInBand` ([#8283](https://togithub.com/facebook/jest/pull/8283)) - `[jest-haste-map]` Fix the `mapper` option which was incorrectly ignored ([#8299](https://togithub.com/facebook/jest/pull/8299)) - `[jest-jasmine2]` Fix describe return value warning being shown if the describe function throws ([#8335](https://togithub.com/facebook/jest/pull/8335)) - `[jest-environment-jsdom]` Re-declare global prototype of JSDOMEnvironment ([#8352](https://togithub.com/facebook/jest/pull/8352)) - `[jest-snapshot]` Handle arrays when merging snapshots ([#7089](https://togithub.com/facebook/jest/pull/7089)) - `[expect]` Extract names of async and generator functions ([#8362](https://togithub.com/facebook/jest/pull/8362)) - `[jest-runtime]` Fix virtual mocks not being unmockable after previously being mocked ([#8396](https://togithub.com/facebook/jest/pull/8396)) - `[jest-transform]` Replace special characters in transform cache filenames to support Windows ([#8353](https://togithub.com/facebook/jest/pull/8353)) - `[jest-config]` Allow exactly one project ([#7498](https://togithub.com/facebook/jest/pull/7498)) ##### Chore & Maintenance - `[expect]` Fix label and add opposite assertion for toEqual tests ([#8288](https://togithub.com/facebook/jest/pull/8288)) - `[docs]` Mention Jest MongoDB Preset ([#8318](https://togithub.com/facebook/jest/pull/8318)) - `[@jest/reporters]` Migrate away from `istanbul-api` ([#8294](https://togithub.com/facebook/jest/pull/8294)) - `[*]` Delete obsolete emails tag from header comment in test files ([#8377](https://togithub.com/facebook/jest/pull/8377)) - `[expect]` optimize compare nodes ([#8368](https://togithub.com/facebook/jest/pull/8368)) - `[docs]` Fix typo in MockFunctionAPI.md ([#8406](https://togithub.com/facebook/jest/pull/8406)) - `[LICENSE]` Follow copyright header guidelines and delete For Jest software ([#8428](https://togithub.com/facebook/jest/pull/8428)) ##### Performance - `[jest-runtime]` Fix module registry memory leak ([#8282](https://togithub.com/facebook/jest/pull/8282)) - `[jest-resolve]` optimize resolve module path ([#8388](https://togithub.com/facebook/jest/pull/8388)) - `[jest-resolve]` cache current directory ([#8412](https://togithub.com/facebook/jest/pull/8412)) - `[jest-get-type]` Simplify checking for primitive ([#8416](https://togithub.com/facebook/jest/pull/8416)) ### [`v24.7.1`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2471) [Compare Source](https://togithub.com/facebook/jest/compare/v24.7.0...v24.7.1) ##### Fixes - `[@jest/config]` Normalize `testSequencer` to its absolute path ([#8267](https://togithub.com/facebook/jest/pull/8267)) - `[@jest/console]` Print to stderr when calling `console.error`, `console.warn` or `console.assert` using the `jest-runtime` CLI ([#8261](https://togithub.com/facebook/jest/pull/8261)) ### [`v24.7.0`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2470) [Compare Source](https://togithub.com/facebook/jest/compare/v24.6.0...v24.7.0) ##### Features - `[@jest/core, @jest/test-sequencer]` Move `testSequencer` to individual package `@jest/test-sequencer` ([#8223](https://togithub.com/facebook/jest/pull/8223)) - `[@jest/core, jest-cli, jest-config]` Add option `testSequencer` allow user use custom sequencer. ([#8223](https://togithub.com/facebook/jest/pull/8223)) ##### Fixes - `[expect]` Add negative equality tests for iterables ([#8260](https://togithub.com/facebook/jest/pull/8260)) - `[jest-haste-map]` Resolve fs watcher EMFILE error ([#8258](https://togithub.com/facebook/jest/pull/8258)) ##### Chore & Maintenance - `[expect]` Remove repetition of matcherName and options in matchers ([#8224](https://togithub.com/facebook/jest/pull/8224)) ##### Performance ### [`v24.6.0`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2460) [Compare Source](https://togithub.com/facebook/jest/compare/v24.5.0...v24.6.0) ##### Features - `[expect]`: Improve report when matcher fails, part 13 ([#8077](https://togithub.com/facebook/jest/pull/8077)) - `[@jest/core]` Filter API pre-filter setup hook ([#8142](https://togithub.com/facebook/jest/pull/8142)) - `[jest-snapshot]` Improve report when matcher fails, part 14 ([#8132](https://togithub.com/facebook/jest/pull/8132)) - `[@jest/reporter]` Display todo and skip test descriptions when verbose is true ([#8038](https://togithub.com/facebook/jest/pull/8038)) - `[jest-runner]` Support default exports for test environments ([#8163](https://togithub.com/facebook/jest/pull/8163)) - `[pretty-format]` Support React.Suspense ([#8180](https://togithub.com/facebook/jest/pull/8180)) - `[jest-snapshot]` Indent inline snapshots ([#8198](https://togithub.com/facebook/jest/pull/8198)) - `[jest-config]` Support colors in `displayName` configuration ([#8025](https://togithub.com/facebook/jest/pull/8025)) ##### Fixes - `[jest-circus]` Fix test retries with beforeAll/beforeEach failures ([#8227](https://togithub.com/facebook/jest/pull/8227)) - `[expect]` Fix circular references in iterable equality ([#8160](https://togithub.com/facebook/jest/pull/8160)) - `[jest-changed-files]` Change method of obtaining git root ([#8052](https://togithub.com/facebook/jest/pull/8052)) - `[jest-each]` Fix test function type ([#8145](https://togithub.com/facebook/jest/pull/8145)) - `[jest-fake-timers]` `getTimerCount` not taking immediates and ticks into account ([#8139](https://togithub.com/facebook/jest/pull/8139)) - `[jest-runtime]` Allow json file as manual mock ([#8159](https://togithub.com/facebook/jest/pull/8159)) - `[pretty-format]` Print `BigInt` as a readable number instead of `{}` ([#8138](https://togithub.com/facebook/jest/pull/8138)) - `[jest-core]` Fix ability to transform dependencies required from globalSetup script ([#8143](https://togithub.com/facebook/jest/pull/8143)) - `[@jest/reporters]` Fix Cannot read property converageData of null ([#8168](https://togithub.com/facebook/jest/pull/8168)) - `[jest-worker]` `JEST_WORKER_ID` starts at 1 ([#8205](https://togithub.com/facebook/jest/pull/8205)) - `[jest-config]` Use default cwd even if config contains a cwd property ([#7923](https://togithub.com/facebook/jest/pull/7923)) - `[jest-resolve-dependencies]`: Remove internal peer dependencies ([#8215](https://togithub.com/facebook/jest/pull/8215)) - `[jest-resolve]`: Remove internal peer dependencies ([#8215](https://togithub.com/facebook/jest/pull/8215)) - `[jest-snapshot]`: Remove internal peer dependencies ([#8215](https://togithub.com/facebook/jest/pull/8215)) - `[jest-resolve]` Fix requireActual with moduleNameMapper ([#8210](https://togithub.com/facebook/jest/pull/8210)) - `[jest-haste-map]` Fix haste map duplicate detection in watch mode ([#8237](https://togithub.com/facebook/jest/pull/8237)) ##### Chore & Maintenance - `[*]` Remove flow from code base ([#8061](https://togithub.com/facebook/jest/pull/8061)) - `[*]` Use property initializer syntax in Jest codebase ([#8117](https://togithub.com/facebook/jest/pull/8117)) - `[*]` Move [@types/node](https://togithub.com/types/node) to the root package.json ([#8129](https://togithub.com/facebook/jest/pull/8129)) - `[*]` Add documentation and tests related to auto-mocking ([#8099](https://togithub.com/facebook/jest/pull/8099)) - `[*]` Add `jest-watch-typeahead` as a devDependency ([#6449](https://togithub.com/facebook/jest/pull/6449)) - `[*]` upgrade TS to 3.4.0-dev\* for incremental builds ([#8149](https://togithub.com/facebook/jest/pull/8149)) - `[docs]` Improve description of optional arguments in ExpectAPI.md ([#8126](https://togithub.com/facebook/jest/pull/8126)) ##### Performance - `[jest-haste-map]` Optimize haste map data structure for serialization/deserialization ([#8171](https://togithub.com/facebook/jest/pull/8171)) - `[jest-haste-map]` Avoid persisting haste map or processing files when not changed ([#8153](https://togithub.com/facebook/jest/pull/8153)) - `[jest-core]` Improve performance of SearchSource.findMatchingTests by 15% ([#8184](https://togithub.com/facebook/jest/pull/8184)) - `[jest-resolve]` Optimize internal cache lookup performance ([#8183](https://togithub.com/facebook/jest/pull/8183)) - `[jest-core]` Dramatically improve watch mode performance ([#8201](https://togithub.com/facebook/jest/pull/8201)) - `[jest-transform]` Cache regular expression instead of creating anew for every file in ScriptTransformer ([#8235](https://togithub.com/facebook/jest/pull/8235)) - `[jest-core]` Fix memory leak of source map info and minor performance improvements ([#8234](https://togithub.com/facebook/jest/pull/8234)) - `[jest-console]` Fix memory leak by releasing console output reference when printed to stdout ([#8233](https://togithub.com/facebook/jest/pull/8233)) - `[jest-runtime]` Use `Map` instead of `Object` for module registry ([#8232](https://togithub.com/facebook/jest/pull/8232)) ### [`v24.5.0`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2450) [Compare Source](https://togithub.com/facebook/jest/compare/v24.4.0...v24.5.0) ##### Features - `[jest-haste-map]` Expose `throwOnModuleCollision` via `config.haste` ([#8113](https://togithub.com/facebook/jest/pull/8113)) ##### Chore & Maintenance - `[expect]` Export `Matchers` interface from `expect` ([#8093](https://togithub.com/facebook/jest/pull/8093)) ### [`v24.4.0`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2440) [Compare Source](https://togithub.com/facebook/jest/compare/v24.3.1...v24.4.0) ##### Features - `[jest-resolve]` Now supports PnP environment without plugins ([#8094](https://togithub.com/facebook/jest/pull/8094)) ##### Fixes - `[expect]` Compare DOM nodes even if there are multiple Node classes ([#8064](https://togithub.com/facebook/jest/pull/8064)) - `[jest-worker]` `worker.getStdout()` can return `null` ([#8083](https://togithub.com/facebook/jest/pull/8083)) - `[jest-worker]` Re-attach stdout and stderr from new processes/threads created after retries ([#8087](https://togithub.com/facebook/jest/pull/8087)) - `[jest-reporters/jest-runner]` Serialize `changedFiles` passed to workers ([#8090](https://togithub.com/facebook/jest/pull/8090)) ##### Chore & Maintenance - `[*]` Make sure to include `d.ts` files in the tarball when building ([#8086](https://togithub.com/facebook/jest/pull/8086)) ### [`v24.3.1`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2431) [Compare Source](https://togithub.com/facebook/jest/compare/v24.3.0...v24.3.1) ##### Fixes - `[jest-cli]` export functions compatible with `import {default}` ([#8080](https://togithub.com/facebook/jest/pull/8080)) - `[jest-worker]`: Fix retries and error notification in workers ([#8079](https://togithub.com/facebook/jest/pull/8079)) ##### Chore & Maintenance - `[pretty-format]`: Use `react-is` instead of manual `$$typeof` checks ([#8060](https://togithub.com/facebook/jest/pull/8060)) ### [`v24.3.0`](https://togithub.com/facebook/jest/blob/master/CHANGELOG.md#2430) [Compare Source](https://togithub.com/facebook/jest/compare/v24.1.0...v24.3.0) We skipped 24.2.0 because a draft was accidentally published. Please use `24.3.0` or a newer version instead. ##### Features - `[expect]`: Improve report when matcher fails, part 10 ([#7960](https://togithub.com/facebook/jest/pull/7960)) - `[expect]`: Improve report when matcher fails, part 11 ([#8008](https://togithub.com/facebook/jest/pull/8008)) - `[expect]`: Improve report when matcher fails, part 12 ([#8033](https://togithub.com/facebook/jest/pull/8033)) - `[expect]`: Improve report when matcher fails, part 7 ([#7866](https://togithub.com/facebook/jest/pull/7866)) - `[expect]`: Improve report when matcher fails, part 8 ([#7876](https://togithub.com/facebook/jest/pull/7876)) - `[expect]`: Improve report when matcher fails, part 9 ([#7940](https://togithub.com/facebook/jest/pull/7940)) - `[jest-circus/jest-jasmine2]` Warn if describe returns a value ([#7852](https://togithub.com/facebook/jest/pull/7852)) - `[jest-config]` Print error information on preset normalization error ([#7935](https://togithub.com/facebook/jest/pull/7935)) - `[jest-get-type]` Add `isPrimitive` function ([#7708](https://togithub.com/facebook/jest/pull/7708)) - `[jest-haste-map]` Add `skipPackageJson` option ([#7778](https://togithub.com/facebook/jest/pull/7778)) - `[jest-util]` Add `isPromise` ([#7852](https://togithub.com/facebook/jest/pull/7852)) - `[pretty-format]` Support `React.memo` ([#7891](https://togithub.com/facebook/jest/pull/7891)) ##### Fixes - `[expect]` Fix `toStrictEqual` not considering arrays with objects having undefined values correctly ([#7938](https://togithub.com/facebook/jest/pull/7938)) - `[expect]` Fix custom async matcher stack trace ([#7652](https://togithub.com/facebook/jest/pull/7652)) - `[expect]` Fix non-object received value in toHaveProperty ([#7986](https://togithub.com/facebook/jest/pull/7986), [#8067](https://togithub.com/facebook/jest/pull/8067)) - `[expect]` Fix non-symmetric equal for Number ([#7948](https://togithub.com/facebook/jest/pull/7948)) - `[expect]` Remove duck typing and obsolete browser support code when comparing DOM nodes and use DOM-Level-3 API instead ([#7995](https://togithub.com/facebook/jest/pull/7995)) - `[jest-changed-files]` Fix `getChangedFilesFromRoots` to not return parts of the commit messages as if they were files, when the commit messages contained multiple paragraphs ([#7961](https://togithub.com/facebook/jest/pull/7961)) - `[jest-changed-files]` Fix pattern for HG changed files ([#8066](https://togithub.com/facebook/jest/pull/8066)) - `[jest-changed-files]` Improve default file selection for Mercurial repos ([#7880](https://togithub.com/facebook/jest/pull/7880)) - `[jest-circus]` Fix bug with test.only ([#7888](https://togithub.com/facebook/jest/pull/7888)) - `[jest-circus]`: Throw explicit error when errors happen after test is considered complete ([#8005](https://togithub.com/facebook/jest/pull/8005)) - `[jest-cli]` Fix prototype pollution vulnerability in dependency ([#7904](https://togithub.com/facebook/jest/pull/7904)) - `[jest-cli]` Refactor `-o` and `--coverage` combined ([#7611](https://togithub.com/facebook/jest/pull/7611)) - `[jest-environment-node]` Add missing globals: TextEncoder and TextDecoder ([#8022](https://togithub.com/facebook/jest/pull/8022)) - `[jest-haste-map]` Enforce uniqueness in names (mocks and haste ids) ([#8002](https://togithub.com/facebook/jest/pull/8002)) - `[jest-jasmine2]`: Throw explicit error when errors happen after test is considered complete ([#8005](https://togithub.com/facebook/jest/pull/8005)) - `[jest-mock]` Adds a type check to `prototype` to allow mocks of objects with a primitive `prototype` property. ([#8040](https://togithub.com/facebook/jest/pull/8040)) - `[jest-transform]` Normalize config and remove unnecessary checks, convert `TestUtils.js` to TypeScript ([#7801](https://togithub.com/facebook/jest/pull/7801)) - `[jest-util]`Make sure to not fail if unable to assign `toStringTag` to the `process` object, which is read only in Node 12 ([#8050](https://togithub.com/facebook/jest/pull/8050)) - `[jest-validate]` Fix validating async functions ([#7894](https://togithub.com/facebook/jest/issues/7894)) - `[jest-worker]` Fix `jest-worker` when using pre-allocated jobs ([#7934](https://togithub.com/facebook/jest/pull/7934)) - `[static]` Remove console log '-' on the front page ([#7977](https://togithub.com/facebook/jest/pull/7977)) ##### Chore & Maintenance - `[*]`: Setup building, linting and testing of TypeScript ([#7808](https://togithub.com/facebook/jest/pull/7808), [#7855](https://togithub.com/facebook/jest/pull/7855), [#7951](https://togithub.com/facebook/jest/pull/7951)) - `[@jest/console]`: Extract custom `console` implementations from `jest-util` into a new separate package ([#8030](https://togithub.com/facebook/jest/pull/8030)) - `[@jest/core]` Create new package, which is `jest-cli` minus `yargs` and `prompts` ([#7696](https://togithub.com/facebook/jest/pull/7696)) - `[@jest/core]`: Migrate to TypeScript ([#7998](https://togithub.com/facebook/jest/pull/7998)) - `[@jest/fake-timers]`: Extract FakeTimers class from `jest-util` into a new separate package ([#7987](https://togithub.com/facebook/jest/pull/7987)) - `[@jest/reporter]`: New package extracted from `jest-cli` ([#7902](https://togithub.com/facebook/jest/pull/7902)) - `[@jest/reporters]`: Migrate to TypeScript ([#7994](https://togithub.com/facebook/jest/pull/7994), [#8045](https://togithub.com/facebook/jest/pull/8045)) - `[@jest/source-map]`: Extract `getCallsite` function from `jest-util` into a new separate package ([#8029](https://togithub.com/facebook/jest/pull/8029)) - `[@jest/test-result]`: Extract TestResult types and helpers into a new separate package ([#8034](https://togithub.com/facebook/jest/pull/8034)) - `[@jest/transform]`: Migrate to TypeScript ([#7918](https://togithub.com/facebook/jest/pull/7918), [#7945](https://togithub.com/facebook/jest/pull/7945)) - `[@jest/transform]`: New package extracted from `jest-runtime` ([#7915](https://togithub.com/facebook/jest/pull/7915)) - `[@jest/types]`: New package to handle shared types ([#7834](https://togithub.com/facebook/jest/pull/7834)) - `[babel-jest]`: Migrate to TypeScript ([#7862](https://togithub.com/facebook/jest/pull/7862)) - `[babel-plugin-jest-hoist]`: Migrate to TypeScript ([#7898](https://togithub.com/facebook/jest/pull/7898)) - `[diff-sequences]`: Migrate to Typescript ([#7820](https://togithub.com/facebook/jest/pull/7820)) - `[docs]` Add missing import to docs ([#7928](https://togithub.com/facebook/jest/pull/7928)) - `[docs]` Update automock configuration, add note related to manual mocks ([#8051](https://togithub.com/facebook/jest/pull/8051)) - `[docs]` Update/Organize TestSequencer and testSchedulerHelper code comments([#7984](https://togithub.com/facebook/jest/pull/7984)) - `[docs]`: Fix image paths in SnapshotTesting.md for current and version 24 ([#7872](https://togithub.com/facebook/jest/pull/7872)) - `[docs]`: Improve runAllTimers doc (it exhausts the micro-task queue) ([#8031](https://togithub.com/facebook/jest/pull/8031)) - `[docs]`: Update CONTRIBUTING.md to add information about running jest with `jest-circus` locally ([#8013](https://togithub.com/facebook/jest/pull/8013)). - `[expect]`: Migrate to TypeScript ([#7919](https://togithub.com/facebook/jest/pull/7919), [#8028](https://togithub.com/facebook/jest/pull/8028)) - `[jest-changed-files]`: Migrate to TypeScript ([#7827](https://togithub.com/facebook/jest/pull/7827)) - `[jest-circus]`: Migrate to TypeScript ([#7916](https://togithub.com/facebook/jest/pull/7916)) - `[jest-cli]`: Migrate to TypeScript ([#8024](https://togithub.com/facebook/jest/pull/8024)) - `[jest-diff]`: Migrate to TypeScript ([#7824](https://togithub.com/facebook/jest/pull/7824), [#8027](https://togithub.com/facebook/jest/pull/8027)) - `[jest-docblock]`: Migrate to TypeScript ([#7836](https://togithub.com/facebook/jest/pull/7836)) - `[jest-each]`: Migrate to Typescript ([#8007](https://togithub.com/facebook/jest/pull/8007)) - `[jest-each]`: Refactor into multiple files with better types ([#8018](https://togithub.com/facebook/jest/pull/8018)) - `[jest-environment-jsdom]`: Migrate to TypeScript ([#7985](https://togithub.com/facebook/jest/pull/8003)) - `[jest-environment-node]`: Migrate to TypeScript ([#7985](https://togithub.com/facebook/jest/pull/7985)) - `[jest-get-type]`: Migrate to TypeScript ([#7818](https://togithub.com/facebook/jest/pull/7818)) - `[jest-haste-map]`: Migrate to TypeScript ([#7854](https://togithub.com/facebook/jest/pull/7854), [#7951](https://togithub.com/facebook/jest/pull/7951)) - `[jest-jasmine2]`: TS migration ([#7970](https://togithub.com/facebook/jest/pull/7970)) - `[jest-leak-detector]`: Migrate to TypeScript ([#7825](https://togithub.com/facebook/jest/pull/7825)) - `[jest-matcher-utils]`: Migrate to TypeScript ([#7835](https://togithub.com/facebook/jest/pull/7835)) - `[jest-message-util]`: Migrate to TypeScript ([#7834](https://togithub.com/facebook/jest/pull/7834)) - `[jest-mock]`: Migrate to TypeScript ([#7847](https://togithub.com/facebook/jest/pull/7847), [#7850](https://togithub.com/facebook/jest/pull/7850), [#7971](https://togithub.com/facebook/jest/pull/7971)) - `[jest-phabricator]`: Migrate to TypeScript ([#7965](https://togithub.com/facebook/jest/pull/7965)) - `[jest-regex-util]`: Migrate to TypeScript ([#7822](https://togithub.com/facebook/jest/pull/7822)) - `[jest-repl]`: Migrate to TypeScript ([#8000](https://togithub.com/facebook/jest/pull/8000)) - `[jest-resolve-dependencies]`: Migrate to TypeScript ([#7922](https://togithub.com/facebook/jest/pull/7922)) - `[jest-resolve]`: Migrate to TypeScript ([#7871](https://togithub.com/facebook/jest/pull/7871)) - `[jest-runner]`: Migrate to TypeScript ([#7968](https://togithub.com/facebook/jest/pull/7968)) - `[jest-runtime]`: Migrate to TypeScript ([#7964](https://togithub.com/facebook/jest/pull/7964), [#7988](https://togithub.com/facebook/jest/pull/7988)) - `[jest-serializer]`: Migrate to TypeScript ([#7841](https://togithub.com/facebook/jest/pull/7841)) - `[jest-snapshot]`: Migrate to TypeScript ([#7899](https://togithub.com/facebook/jest/pull/7899)) - `[jest-util]`: Migrate to TypeScript ([#7844](https://togithub.com/facebook/jest/pull/7844), [#8021](https://togithub.com/facebook/jest/pull/8021)) - `[jest-validate]`: Migrate to TypeScript ([#7991](https://togithub.com/facebook/jest/pull/7991)) - `[jest-watcher]`: Migrate to TypeScript ([#7843](https://togithub.com/facebook/jest/pull/7843)) - `[jest-worker]`: Migrate to TypeScript ([#7853](https://togithub.com/facebook/jest/pull/7853)) - `[jest]`: Migrate to TypeScript ([#8024](https://togithub.com/facebook/jest/pull/8024)) - `[pretty-format]`: Migrate to TypeScript ([#7809](https://togithub.com/facebook/jest/pull/7809), [#7809](https://togithub.com/facebook/jest/pull/7972)) ##### Performance - `[jest-haste-map]` Optimize haste map tracking of deleted files with Watchman. ([#8056](https://togithub.com/facebook/jest/pull/8056))Configuration
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