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CHANGELOG.md
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## main
### Features
- `[babel-jest]` Export `createTransformer` function ([#12399](https://github.com/facebook/jest/pull/12399))
- `[expect]` Expose `AsymmetricMatchers`, `MatcherFunction` and `MatcherFunctionWithState` interfaces ([#12363](https://github.com/facebook/jest/pull/12363), [#12376](https://github.com/facebook/jest/pull/12376))
- `[jest-config]` [**BREAKING**] Stop shipping `jest-environment-jsdom` by default ([#12354](https://github.com/facebook/jest/pull/12354))
- `[jest-config]` [**BREAKING**] Stop shipping `jest-jasmine2` by default ([#12355](https://github.com/facebook/jest/pull/12355))
- `[jest-config, @jest/types]` Add `ci` to `GlobalConfig` ([#12378](https://github.com/facebook/jest/pull/12378))
- `[jest-environment-jsdom]` [**BREAKING**] Upgrade jsdom to 19.0.0 ([#12290](https://github.com/facebook/jest/pull/12290))
- `[jest-environment-jsdom]` [**BREAKING**] Add default `browser` condition to `exportConditions` for `jsdom` environment ([#11924](https://github.com/facebook/jest/pull/11924))
- `[jest-environment-node]` [**BREAKING**] Add default `node` and `node-addon` conditions to `exportConditions` for `node` environment ([#11924](https://github.com/facebook/jest/pull/11924))
- `[@jest/expect]` New module which extends `expect` with `jest-snapshot` matchers ([#12404](https://github.com/facebook/jest/pull/12404), [#12410](https://github.com/facebook/jest/pull/12410), [#12418](https://github.com/facebook/jest/pull/12418))
- `[@jest/expect-utils]` New module exporting utils for `expect` ([#12323](https://github.com/facebook/jest/pull/12323))
- `[jest-mock]` Improve `isMockFunction` to infer types of passed function ([#12442](https://github.com/facebook/jest/pull/12442))
- `[jest-resolve]` [**BREAKING**] Add support for `package.json` `exports` ([#11961](https://github.com/facebook/jest/pull/11961), [#12373](https://github.com/facebook/jest/pull/12373))
- `[jest-resolve, jest-runtime]` Add support for `data:` URI import and mock ([#12392](https://github.com/facebook/jest/pull/12392))
- `[@jest/schemas]` New module for JSON schemas for Jest's config ([#12384](https://github.com/facebook/jest/pull/12384))
- `[jest-worker]` [**BREAKING**] Allow only absolute `workerPath` ([#12343](https://github.com/facebook/jest/pull/12343))
- `[pretty-format]` New `maxWidth` parameter ([#12402](https://github.com/facebook/jest/pull/12402))
### Fixes
- `[expect]` Move typings of `.not`, `.rejects` and `.resolves` modifiers outside of `Matchers` interface ([#12346](https://github.com/facebook/jest/pull/12346))
- `[jest-config]` Correctly detect CI environment and update snapshots accordingly ([#12378](https://github.com/facebook/jest/pull/12378))
- `[jest-config]` Pass `moduleTypes` to `ts-node` to enforce CJS when transpiling ([#12397](https://github.com/facebook/jest/pull/12397))
- `[jest-environment-jsdom]` Make `jsdom` accessible to extending environments again ([#12232](https://github.com/facebook/jest/pull/12232))
- `[jest-haste-map]` Don't use partial results if file crawl errors ([#12420](https://github.com/facebook/jest/pull/12420))
- `[jest-jasmine2, jest-types]` [**BREAKING**] Move all `jasmine` specific types from `@jest/types` to its own package ([#12125](https://github.com/facebook/jest/pull/12125))
- `[jest-matcher-utils]` Pass maxWidth to `pretty-format` to avoid printing every element in arrays by default ([#12402](https://github.com/facebook/jest/pull/12402))
- `[jest-mock]` Fix function overloads for `spyOn` to allow more correct type inference in complex object ([#12442](https://github.com/facebook/jest/pull/12442))
### Chore & Maintenance
- `[*]` [**BREAKING**] Drop support for Node v10 and v15 and target first LTS `16.13.0` ([#12220](https://github.com/facebook/jest/pull/12220))
- `[*]` [**BREAKING**] Drop support for `typescript@3.8`, minimum version is now `4.2` ([#11142](https://github.com/facebook/jest/pull/11142))
- `[*]` Bundle all `.d.ts` files into a single `index.d.ts` per module ([#12345](https://github.com/facebook/jest/pull/12345))
- `[docs]` Add note about not mixing `done()` with Promises ([#11077](https://github.com/facebook/jest/pull/11077))
- `[docs, examples]` Update React examples to match with the new React guidelines for code examples ([#12217](https://github.com/facebook/jest/pull/12217))
- `[expect]` [**BREAKING**] Remove support for importing `build/utils` ([#12323](https://github.com/facebook/jest/pull/12323))
- `[expect]` [**BREAKING**] Migrate to ESM ([#12344](https://github.com/facebook/jest/pull/12344))
- `[expect]` [**BREAKING**] Snapshot matcher types are moved to `@jest/expect` ([#12404](https://github.com/facebook/jest/pull/12404))
- `[jest-cli]` Update `yargs` to v17 ([#12357](https://github.com/facebook/jest/pull/12357))
- `[jest-config]` [**BREAKING**] Remove `getTestEnvironment` export ([#12353](https://github.com/facebook/jest/pull/12353))
- `[@jest/core]` Use `index.ts` instead of `jest.ts` as main export ([#12329](https://github.com/facebook/jest/pull/12329))
- `[jest-environment-jsdom]` [**BREAKING**] Migrate to ESM ([#12340](https://github.com/facebook/jest/pull/12340))
- `[jest-environment-node]` [**BREAKING**] Migrate to ESM ([#12340](https://github.com/facebook/jest/pull/12340))
- `[@jest/fake-timers]` Update `@sinonjs/fake_timers` to v9 ([#12357](https://github.com/facebook/jest/pull/12357))
- `[jest-jasmine2, jest-runtime]` [**BREAKING**] Use `Symbol` to pass `jest.setTimeout` value instead of `jasmine` specific logic ([#12124](https://github.com/facebook/jest/pull/12124))
- `[jest-phabricator]` [**BREAKING**] Migrate to ESM ([#12341](https://github.com/facebook/jest/pull/12341))
- `[jest-resolve]` [**BREAKING**] Make `requireResolveFunction` argument mandatory ([#12353](https://github.com/facebook/jest/pull/12353))
- `[jest-runner]` [**BREAKING**] Remove some type exports from `@jest/test-result` ([#12353](https://github.com/facebook/jest/pull/12353))
- `[jest-serializer]` [**BREAKING**] Deprecate package in favour of using `v8` APIs directly ([#12391](https://github.com/facebook/jest/pull/12391))
- `[jest-snapshot]` [**BREAKING**] Migrate to ESM ([#12342](https://github.com/facebook/jest/pull/12342))
- `[jest-transform]` Update `write-file-atomic` to v4 ([#12357](https://github.com/facebook/jest/pull/12357))
- `[jest-types]` [**BREAKING**] Remove `Config.Glob` and `Config.Path` ([#12406](https://github.com/facebook/jest/pull/12406))
- `[jest]` Use `index.ts` instead of `jest.ts` as main export ([#12329](https://github.com/facebook/jest/pull/12329))
### Performance
- `[jest-haste-map]` [**BREAKING**] Default to `node` crawler over shelling out to `find` if `watchman` is not enabled ([#12320](https://github.com/facebook/jest/pull/12320))
## 27.5.1
### Features
- `[jest-config]` Support comments in JSON config file ([#12316](https://github.com/facebook/jest/pull/12316))
- `[pretty-format]` Expose `ConvertAnsi` plugin ([#12308](https://github.com/facebook/jest/pull/12308))
### Fixes
- `[expect]` Add type definitions for asymmetric `closeTo` matcher ([#12304](https://github.com/facebook/jest/pull/12304))
- `[jest-cli]` Load binary via exported API ([#12315](https://github.com/facebook/jest/pull/12315))
- `[jest-config]` Replace `jsonlint` with `parse-json` ([#12316](https://github.com/facebook/jest/pull/12316))
- `[jest-repl]` Make module importable ([#12311](https://github.com/facebook/jest/pull/12311) & [#12315](https://github.com/facebook/jest/pull/12315))
### Chore & Maintenance
- `[*]` Avoid anonymous default exports ([#12313](https://github.com/facebook/jest/pull/12313))
## 27.5.0
### Features
- `[expect]` Add asymmetric matcher `expect.closeTo` ([#12243](https://github.com/facebook/jest/pull/12243))
- `[jest-mock]` Added `mockFn.mock.lastCall` to retrieve last argument ([#12285](https://github.com/facebook/jest/pull/12285))
### Fixes
- `[expect]` Add a fix for `.toHaveProperty('')` ([#12251](https://github.com/facebook/jest/pull/12251))
- `[jest-each, @jest/globals]` Allow passing `ReadonlyArray` type of a table to `describe.each` and `test.each` ([#12297](https://github.com/facebook/jest/pull/12297))
- `[@jest/globals]` Add missing `options` argument to `jest.doMock` typing ([#12292](https://github.com/facebook/jest/pull/12292))
- `[jest-environment-node]` Add `atob` and `btoa` ([#12269](https://github.com/facebook/jest/pull/12269))
- `[jest-matcher-utils]` Correct diff for expected asymmetric matchers ([#12264](https://github.com/facebook/jest/pull/12264))
- `[jest-message-util]` Fix `.getTopFrame()` (and `toMatchInlineSnapshot()`) with `mjs` files ([#12277](https://github.com/facebook/jest/pull/12277))
### Chore & Maintenance
- `[*]` Update `graceful-fs` to `^4.2.9` ([#11749](https://github.com/facebook/jest/pull/11749))
### Performance
- `[jest-resolve]` perf: skip error creation on not found `stat` calls ([#11749](https://github.com/facebook/jest/pull/11749))
## 27.4.7
### Fixes
- `jest-config` Add missing `@babel/core` dependency ([#12216](https://github.com/facebook/jest/pull/12216))
## 27.4.6
### Fixes
- `[jest-environment-node]` Add `AbortSignal` ([#12157](https://github.com/facebook/jest/pull/12157))
- `[jest-environment-node]` Add Missing node global `performance` ([#12002](https://github.com/facebook/jest/pull/12002))
- `[jest-runtime]` Handle missing `mocked` property ([#12213](https://github.com/facebook/jest/pull/12213))
- `[@jest/transform]` Update dependency package `pirates` to 4.0.4 ([#12002](https://github.com/facebook/jest/pull/12002))
### Performance
- `jest-config` perf: only register ts-node once when loading TS config files ([#12160](https://github.com/facebook/jest/pull/12160))
## 27.4.5
### Fixes
- `[jest-worker]` Stop explicitly passing `process.env` ([#12141](https://github.com/facebook/jest/pull/12141))
## 27.4.4
### Fixes
- `[babel-jest]` Add `process.version` chunk to the cache key ([#12122](https://github.com/facebook/jest/pull/12122))
- `[jest-environment]` Add `mocked` to `jest` object ([#12133](https://github.com/facebook/jest/pull/12133))
- `[jest-worker]` Stop explicitly passing `execArgv` ([#12128](https://github.com/facebook/jest/pull/12128))
### Chore & Maintenance
- `[website]` Fix the card front that looks overlapping part of the card back
## 27.4.3
### Fixes
- `[jest-environment-jsdom]` Remove `@types/jsdom` dependency (and make its `dom` property `private`) ([#12107](https://github.com/facebook/jest/pull/12107))
## 27.4.2
### Fixes
- `[jest-worker]` Add additional `execArgv` to filter ([#12103](https://github.com/facebook/jest/pull/12103))
## 27.4.1
### Fixes
- `[jest-worker]` Filter `execArgv` correctly ([#12097](https://github.com/facebook/jest/pull/12097))
## 27.4.0
### Features
- `[expect]` Enhancing the `toHaveProperty` matcher to support array selection ([#12092](https://github.com/facebook/jest/pull/12092))
- `[jest-core]` Add support for `testResultsProcessor` written in ESM ([#12006](https://github.com/facebook/jest/pull/12006))
- `[jest-diff, pretty-format]` Add `compareKeys` option for custom sorting of object keys ([#11992](https://github.com/facebook/jest/pull/11992))
- `[jest-mock]` Add `ts-jest` mock util functions ([#12089](https://github.com/facebook/jest/pull/12089))
### Fixes
- `[expect]` Allow again `expect.Matchers` generic with single value ([#11986](https://github.com/facebook/jest/pull/11986))
- `[jest-circus, jest-jasmine2]` Avoid false concurrent test failures due to unhandled promise rejections ([#11987](https://github.com/facebook/jest/pull/11987))
- `[jest-config]` Add missing `slash` dependency to `package.json` ([#12080](https://github.com/facebook/jest/pull/12080))
- `[jest-core]` Incorrect detection of open ZLIB handles ([#12022](https://github.com/facebook/jest/pull/12022))
- `[jest-diff]` Break dependency cycle ([#10818](https://github.com/facebook/jest/pull/10818))
- `[jest-environment-jsdom]` Add `@types/jsdom` dependency ([#11999](https://github.com/facebook/jest/pull/11999))
- `[jest-environment-jsdom]` Do not reset the global.document too early on teardown ([#11871](https://github.com/facebook/jest/pull/11871))
- `[jest-transform]` Improve error and warning messages ([#11998](https://github.com/facebook/jest/pull/11998))
- `[jest-worker]` Pass `execArgv` correctly to `worker_threads` worker ([#12069](https://github.com/facebook/jest/pull/12069))
### Chore & Maintenance
- `[docs]` CLI options alphabetized ([#11586](https://github.com/facebook/jest/pull/11586))
- `[jest-runner]` Add info regarding timers to forcedExit message([#12083](https://github.com/facebook/jest/pull/12083))
- `[*]` Replaced `substr` method with `substring` ([#12066](https://github.com/facebook/jest/pull/12066))
- `[*]` Add `types` entry to all export maps ([#12073](https://github.com/facebook/jest/pull/12073))
## 27.3.1
### Fixes
- `[expect]` Make `expect` extension properties `configurable` ([#11978](https://github.com/facebook/jest/pull/11978))
- `[expect]` Fix `.any()` checks on primitive wrapper classes ([#11976](https://github.com/facebook/jest/pull/11976))
### Chore & Maintenance
- `[expect]` `BigInt` global is always defined, don't check for its existence at runtime ([#11979](https://github.com/facebook/jest/pull/11979))
- `[jest-config, jest-util]` Use `ci-info` instead of `is-ci` to detect CI environment ([#11973](https://github.com/facebook/jest/pull/11973))
## 27.3.0
### Features
- `[jest-config]` Add `testEnvironmentOptions.html` to apply to jsdom input ([#11950](https://github.com/facebook/jest/pull/11950))
- `[jest-resolver]` Support default export (`.`) in `exports` field _if_ `main` is missing ([#11919](https://github.com/facebook/jest/pull/11919))
### Fixes
- `[expect]` Tweak and improve types ([#11949](https://github.com/facebook/jest/pull/11949))
- `[jest-runtime]` Ensure absolute paths can be resolved within test modules ([#11943](https://github.com/facebook/jest/pull/11943))
- `[jest-runtime]` Fix `instanceof` for `ModernFakeTimers` and `LegacyFakeTimers` methods ([#11946](https://github.com/facebook/jest/pull/11946))
## 27.2.5
### Features
- `[jest-config]` Warn when multiple Jest configs are located ([#11922](https://github.com/facebook/jest/pull/11922))
### Fixes
- `[expect]` Pass matcher context to asymmetric matchers ([#11926](https://github.com/facebook/jest/pull/11926) & [#11930](https://github.com/facebook/jest/pull/11930))
- `[expect]` Improve TypeScript types ([#11931](https://github.com/facebook/jest/pull/11931))
- `[expect]` Improve typings of `toThrow()` and `toThrowError()` matchers ([#11929](https://github.com/facebook/jest/pull/11929))
- `[jest-cli]` Improve `--help` printout by removing defunct `--browser` option ([#11914](https://github.com/facebook/jest/pull/11914))
- `[jest-haste-map]` Use distinct cache paths for different values of `computeDependencies` ([#11916](https://github.com/facebook/jest/pull/11916))
- `[@jest/reporters]` Do not buffer `console.log`s when using verbose reporter ([#11054](https://github.com/facebook/jest/pull/11054))
### Chore & Maintenance
- `[expect]` Export default matchers ([#11932](https://github.com/facebook/jest/pull/11932))
- `[@jest/types]` Mark deprecated configuration options as `@deprecated` ([#11913](https://github.com/facebook/jest/pull/11913))
## 27.2.4
### Features
- `[expect]` Add equality checks for Array Buffers in `expect.ToStrictEqual()` ([#11805](https://github.com/facebook/jest/pull/11805))
### Fixes
- `[jest-snapshot]` Correctly indent inline snapshots ([#11560](https://github.com/facebook/jest/pull/11560))
## 27.2.3
### Features
- `[@jest/fake-timers]` Update `@sinonjs/fake-timers` to v8 ([#11879](https://github.com/facebook/jest/pull/11879))
### Fixes
- `[jest-config]` Parse `testEnvironmentOptions` if received from CLI ([#11902](https://github.com/facebook/jest/pull/11902))
- `[jest-reporters]` Call `destroy` on `v8-to-istanbul` converters to free memory ([#11896](https://github.com/facebook/jest/pull/11896))
## 27.2.2
### Fixes
- `[jest-runtime]` Correct `wrapperLength` value for ESM modules. ([#11893](https://github.com/facebook/jest/pull/11893))
## 27.2.1
### Features
- `[jest-transform]` Improve the unexpected token error message. ([#11807](https://github.com/facebook/jest/pull/11807))
### Fixes
- `[jest-runtime]` Fix regression when using `jest.isolateModules` and mocks ([#11882](https://github.com/facebook/jest/pull/11882))
- `[jest-runtime]` Include test name when importing modules after test has completed ([#11885](https://github.com/facebook/jest/pull/11885))
- `[jest-runtime]` Error when ESM import is used after test is torn down ([#11885](https://github.com/facebook/jest/pull/11885))
## 27.2.0
### Features
- `[jest-resolver, jest-runtime]` Pass `conditions` to custom resolvers to enable them to implement support for package.json `exports` field ([#11859](https://github.com/facebook/jest/pull/11859))
- `[jest-runtime]` Allow custom envs to specify `exportConditions` which is passed together with Jest's own conditions to custom resolvers ([#11863](https://github.com/facebook/jest/pull/11863))
### Fixes
- `[@jest/reporters]` Use async transform if available to transform files with no coverage ([#11852](https://github.com/facebook/jest/pull/11852))
- `[jest-util]` Return correct value from `process.send` stub ([#11799](https://github.com/facebook/jest/pull/11799))
## 27.1.1
### Features
- `[jest-runtime]` Add experimental, limited (and undocumented) support for mocking ECMAScript Modules ([#11818](https://github.com/facebook/jest/pull/11818))
### Fixes
- `[jest-resolver]` Support `node:` prefix when importing Node core modules with ESM ([#11817](https://github.com/facebook/jest/pull/11817))
- `[jest-types]` Export the `PrettyFormatOptions` interface ([#11801](https://github.com/facebook/jest/pull/11801))
## 27.1.0
### Features
- `[jest-haste-map]` Use watchman suffix-set option for faster file indexing. ([#11784](https://github.com/facebook/jest/pull/11784))
- `[jest-cli]` Adds a new config options `snapshotFormat` which offers a way to override any of the formatting settings which come with [pretty-format](https://www.npmjs.com/package/pretty-format#usage-with-options). ([#11654](https://github.com/facebook/jest/pull/11654))
- `[jest-reporters]` Expose the `getSummary` util ([#11695](https://github.com/facebook/jest/pull/11695)).
- `[jest-resolver]` Support `node:` prefix when importing Node core modules ([#11331](https://github.com/facebook/jest/pull/11331))
### Fixes
- `[jest-each]` Relaxed the validation to allow multibyte characters in headings ([#11575](https://github.com/facebook/jest/pull/11575))
- `[jest-environment-jsdom]` Add support for `userAgent` option ([#11773](https://github.com/facebook/jest/pull/11773))
- `[jest-environment-node]` Add `Event` and `EventTarget` to node global environment. ([#11727](https://github.com/facebook/jest/pull/11727))
- `[jest-mock]` Fix `spyOn` to use `Object.prototype.hasOwnProperty` ([#11721](https://github.com/facebook/jest/pull/11721))
- `[jest-resolver]` Add dependency on `jest-haste-map` ([#11759](https://github.com/facebook/jest/pull/11759))
- `[jest-types]` Compat with `@types/node` v16 ([#11645](https://github.com/facebook/jest/pull/11645))
### Chore & Maintenance
- `[docs]` Correct `expects.assertions` documentation by adding async/await for asynchronous function.
## 27.0.6
### Fixes
- `[*]` Publish all modules to include the build change in ([#11569](https://github.com/facebook/jest/pull/11569))
## 27.0.5
### Features
- `[@jest/fake-timers]` Flush callbacks scheduled with `requestAnimationFrame` every 16ms when using legacy timers. ([#11523](https://github.com/facebook/jest/pull/11567))
- `[pretty-format]` Use `globalThis` (with polyfill if required) to bring support for esbuild's browser bundling mode ([#11569](https://github.com/facebook/jest/pull/11569))
### Fixes
- `[jest-core]` Support special characters like `@`, `+` and `()` on Windows with `--findRelatedTests` ([#11548](https://github.com/facebook/jest/pull/11548))
- `[@jest/fake-timers]` Do not add `setImmediate` and `clearImmediate` if they do not exist in the global environment ([#11599](https://github.com/facebook/jest/pull/11599))
- `[@jest/reporters]` Allow `node-notifier@10` as peer dependency ([#11523](https://github.com/facebook/jest/pull/11523))
- `[@jest/reporters]` Update `v8-to-istanbul` ([#11523](https://github.com/facebook/jest/pull/11523))
## 27.0.4
### Fixes
- `[jest-config, jest-resolve]` Pass in `require.resolve` to resolvers to resolve from correct base ([#11493](https://github.com/facebook/jest/pull/11493))
## 27.0.3
### Fixes
- `[jest-config]` `require.resolve` on default test sequencer and test environment ([#11482](https://github.com/facebook/jest/pull/11482))
- `[jest-mock]` Fixed `fn` and `spyOn` exports ([#11480](https://github.com/facebook/jest/pull/11480))
## 27.0.2
### Features
- `[jest-circus]` Add some APIs to make it easier to build your own test runner
- `[jest-reporters]` Expose the `getResultHeader` util ([#11460](https://github.com/facebook/jest/pull/11460))
- `[jest-resolver]` Export `resolve*` utils for different Jest modules ([#11466](https://github.com/facebook/jest/pull/11466))
- `[@jest/test-result]` Export `Test`, `TestEvents` and `TestFileEvent` ([#11466](https://github.com/facebook/jest/pull/11466))
### Fixes
- `[jest-circus]` Add missing `slash` dependency ([#11465](https://github.com/facebook/jest/pull/11465))
- `[jest-circus, @jest/test-sequencer]` Remove dependency on `jest-runner` ([#11466](https://github.com/facebook/jest/pull/11466))
- `[jest-config]` Resolve `config.runner` to absolute path ([#11465](https://github.com/facebook/jest/pull/11465))
- `[jest-config]` Make sure to support functions as config ([#11475](https://github.com/facebook/jest/pull/11475))
- `[jest-core]` Do not warn about `DNSCHANNEL` handles when using the `--detectOpenHandles` option ([#11470](https://github.com/facebook/jest/pull/11470))
- `[jest-runner]` Remove dependency on `jest-config` ([#11466](https://github.com/facebook/jest/pull/11466))
- `[jest-worker]` Loosen engine requirement to `>= 10.13.0` ([#11451](https://github.com/facebook/jest/pull/11451))
## 27.0.1
### Fixes
- `[jest-environment-jsdom]` Bump version of JSDOM to avoid deprecated `request` package ([#11442](https://github.com/facebook/jest/pull/11442))
## 27.0.0
### Features
- `[babel-jest]` Add async transformation ([#11192](https://github.com/facebook/jest/pull/11192))
- `[jest-changed-files]` Use '--' to separate paths from revisions ([#11160](https://github.com/facebook/jest/pull/11160))
- `[jest-circus]` [**BREAKING**] Fail tests when multiple `done()` calls are made ([#10624](https://github.com/facebook/jest/pull/10624))
- `[jest-circus, jest-jasmine2]` [**BREAKING**] Fail the test instead of just warning when describe returns a value ([#10947](https://github.com/facebook/jest/pull/10947))
- `[jest-config]` [**BREAKING**] Default to Node testing environment instead of browser (JSDOM) ([#9874](https://github.com/facebook/jest/pull/9874))
- `[jest-config]` [**BREAKING**] Use `jest-circus` as default test runner ([#10686](https://github.com/facebook/jest/pull/10686))
- `[jest-config]` Add support for `preset` written in ESM ([#11200](https://github.com/facebook/jest/pull/11200))
- `[jest-config, jest-runtime]` Support ESM for files other than `.js` and `.mjs` ([#10823](https://github.com/facebook/jest/pull/10823))
- `[jest-config, jest-runtime]` [**BREAKING**] Use "modern" implementation as default for fake timers ([#10874](https://github.com/facebook/jest/pull/10874) & [#11197](https://github.com/facebook/jest/pull/11197))
- `[jest-config` Allow passing `forceNodeFilesystemAPI` through to `jest-haste-map` ([#11264](https://github.com/facebook/jest/pull/11264))
- `[jest-config, jest-haste-map, jest-resolve, jest-runner, jest-runtime, jest-test-sequencer, jest-transform, jest-types]` [**BREAKING**] Add custom HasteMap class implementation config option ([#11107](https://github.com/facebook/jest/pull/11107))
- `[jest-core]` make `TestWatcher` extend `emittery` ([#10324](https://github.com/facebook/jest/pull/10324))
- `[jest-core]` Run failed tests interactively the same way we do with snapshots ([#10858](https://github.com/facebook/jest/pull/10858))
- `[jest-core]` more `TestSequencer` methods can be async ([#10980](https://github.com/facebook/jest/pull/10980))
- `[jest-core]` Add support for `testSequencer` written in ESM ([#11207](https://github.com/facebook/jest/pull/11207))
- `[jest-core]` Add support for `globalSetup` and `globalTeardown` written in ESM ([#11267](https://github.com/facebook/jest/pull/11267))
- `[jest-core]` Add support for `watchPlugins` written in ESM ([#11315](https://github.com/facebook/jest/pull/11315))
- `[jest-core]` Add support for `runner` written in ESM ([#11232](https://github.com/facebook/jest/pull/11232))
- `[jest-core]` Add support for `reporters` written in ESM ([#11427](https://github.com/facebook/jest/pull/11427))
- `[jest-each]` Add support for interpolation with object properties ([#11388](https://github.com/facebook/jest/pull/11388))
- `[jest-environment-node]` Add AbortController to globals ([#11182](https://github.com/facebook/jest/pull/11182))
- `[@jest/fake-timers]` Update to `@sinonjs/fake-timers` to v7 ([#11198](https://github.com/facebook/jest/pull/11198))
- `[jest-haste-map]` Handle injected scm clocks ([#10966](https://github.com/facebook/jest/pull/10966))
- `[jest-haste-map]` Add `enableSymlinks` configuration option to follow symlinks for test files ([#9351](https://github.com/facebook/jest/pull/9351))
- `[jest-repl, jest-runner]` [**BREAKING**] Run transforms over environment ([#8751](https://github.com/facebook/jest/pull/8751))
- `[jest-repl]` Add support for `testEnvironment` written in ESM ([#11232](https://github.com/facebook/jest/pull/11232))
- `[jest-reporters]` Add static filepath property to all reporters ([#11015](https://github.com/facebook/jest/pull/11015))
- `[jest-runner]` [**BREAKING**] set exit code to 1 if test logs after teardown ([#10728](https://github.com/facebook/jest/pull/10728))
- `[jest-runner]` [**BREAKING**] Run transforms over `runner` ([#8823](https://github.com/facebook/jest/pull/8823))
- `[jest-runner]` [**BREAKING**] Run transforms over `testRunner` ([#8823](https://github.com/facebook/jest/pull/8823))
- `[jest-runner]` Possibility to use ESM for test environment ([11033](https://github.com/facebook/jest/pull/11033))
- `[jest-runner]` Add support for `testRunner` written in ESM ([#11232](https://github.com/facebook/jest/pull/11232))
- `[jest-runtime]` Detect reexports from CJS as named exports in ESM ([#10988](https://github.com/facebook/jest/pull/10988))
- `[jest-runtime]` Support for async code transformations ([#11191](https://github.com/facebook/jest/pull/11191) & [#11220](https://github.com/facebook/jest/pull/11220))
- `[jest-snapshot]` [**BREAKING**] Make prettier optional for inline snapshots - fall back to string replacement ([#7792](https://github.com/facebook/jest/pull/7792) & [#11192](https://github.com/facebook/jest/pull/11192))
- `[jest-snapshot]` [**BREAKING**] Run transforms over `snapshotResolver` ([#8751](https://github.com/facebook/jest/pull/8829))
- `[jest-transform]` Pass config options defined in Jest's config to transformer's `process` and `getCacheKey` functions ([#10926](https://github.com/facebook/jest/pull/10926))
- `[jest-transform]` Add support for transformers written in ESM ([#11163](https://github.com/facebook/jest/pull/11163))
- `[jest-transform]` [**BREAKING**] Do not export `ScriptTransformer` class, instead export the async function `createScriptTransformer` ([#11163](https://github.com/facebook/jest/pull/11163))
- `[jest-transform]` Async code transformations ([#9889](https://github.com/facebook/jest/pull/9889))
- `[jest-transform]` Support transpiled transformers ([#11193](https://github.com/facebook/jest/pull/11193))
- `[jest-transform]` [**BREAKING**] `requireAndTranspileModule` always return a `Promise`, and the third parameter type is changed to `RequireAndTranspileModuleOptions` which accept `applyInteropRequireDefault` option ([#11232](https://github.com/facebook/jest/pull/11232))
- `[jest-transform]` [**BREAKING**] `createTranspilingRequire` return function which return a `Promise` now ([#11232](https://github.com/facebook/jest/pull/11232))
- `[jest-util]` add requireOrImportModule for importing CJS or ESM ([#11199](https://github.com/facebook/jest/pull/11199))
- `[jest-util]` add `applyInteropRequireDefault` option on `requireOrImportModule` ([#11232](https://github.com/facebook/jest/pull/11232))
- `[jest-watcher]` Added support for clearing the line when `<C-u>` is pressed in a watch mode pattern prompt ([#11358](https://github.com/facebook/jest/pull/11358))
- `[jest-worker]` Add support for custom task queues and adds a `PriorityQueue` implementation. ([#10921](https://github.com/facebook/jest/pull/10921))
- `[jest-worker]` Add in-order scheduling policy to jest worker ([10902](https://github.com/facebook/jest/pull/10902))
- `[pretty-format]` Better print for sparse arrays ([11326](https://github.com/facebook/jest/pull/11326))
- `[pretty-print]` Add option `printBasicPrototype` which determines whether or not the prototype should be printed for raw objects or arrays ([#11441](https://github.com/facebook/jest/pull/11441))
### Fixes
- `[babel-plugin-jest-hoist]` Add `__dirname` and `__filename` to whitelisted globals ([#10903](https://github.com/facebook/jest/pull/10903))
- `[expect]` [**BREAKING**] Revise `expect.not.objectContaining()` to be the inverse of `expect.objectContaining()`, as documented. ([#10708](https://github.com/facebook/jest/pull/10708))
- `[expect]` [**BREAKING**] Make `toContain` more strict with the received type ([#10119](https://github.com/facebook/jest/pull/10119) & [#10929](https://github.com/facebook/jest/pull/10929))
- `[expect]` [**BREAKING**] `matcherResult` on `JestAssertionError` are now strings rather than functions ([#10989](https://github.com/facebook/jest/pull/10989))
- `[jest-circus]` Fixed the issue of beforeAll & afterAll hooks getting executed even if it is inside a skipped `describe` block ([#10806](https://github.com/facebook/jest/pull/10806))
- `[jest-circus]` Fix `testLocation` on Windows when using `test.each` ([#10871](https://github.com/facebook/jest/pull/10871))
- `[jest-cli]` Use testFailureExitCode when bailing from a failed test ([#10958](https://github.com/facebook/jest/pull/10958))
- `[jest-cli]` Print custom error if error thrown from global hooks is not an error already ([#11003](https://github.com/facebook/jest/pull/11003))
- `[jest-cli]` Allow running multiple "projects" from programmatic API ([#11307](https://github.com/facebook/jest/pull/11307))
- `[jest-cli]` Fix missing collectCoverage after init ([#11353](https://github.com/facebook/jest/pull/11353))
- `[jest-cli, jest-config, jest-types]` Move all default values into `jest-config` ([#9924](https://github.com/facebook/jest/pull/9924))
- `[jest-config]` [**BREAKING**] Change default file extension order by moving json behind ts and tsx ([10572](https://github.com/facebook/jest/pull/10572))
- `[jest-console]` `console.dir` now respects the second argument correctly ([#10638](https://github.com/facebook/jest/pull/10638))
- `[jest-core]` Don't report PerformanceObserver as open handle ([#11123](https://github.com/facebook/jest/pull/11123))
- `[jest-core]` Use `WeakRef` to hold timers when detecting open handles ([#11277](https://github.com/facebook/jest/pull/11277))
- `[jest-core]` Correctly detect open handles that were created in test functions using `done` callbacks ([#11382](https://github.com/facebook/jest/pull/11382))
- `[jest-core]` Do not collect `RANDOMBYTESREQUEST` as open handles ([#11278](https://github.com/facebook/jest/pull/11278))
- `[jest-core]` Wait briefly for open handles to close before flagging them when using `--detectOpenHandles` ([#11429](https://github.com/facebook/jest/pull/11429))
- `[jest-diff]` [**BREAKING**] Use only named exports ([#11371](https://github.com/facebook/jest/pull/11371))
- `[jest-each]` [**BREAKING**] Ignore excess words in headings ([#8766](https://github.com/facebook/jest/pull/8766))
- `[jest-each]` Support array index with template strings ([#10763](https://github.com/facebook/jest/pull/10763))
- `[jest-each]` Interpolate `%%` correctly ([#11364](https://github.com/facebook/jest/pull/11364))
- `[jest-each]` Fix wrong interpolation when the value of array contains multiple `%` ([#11364](https://github.com/facebook/jest/pull/11364))
- `[jest-environment]` [**BREAKING**] Drop support for `runScript` for test environments ([#11155](https://github.com/facebook/jest/pull/11155))
- `[jest-environment-jsdom]` Use inner realm’s `ArrayBuffer` constructor ([#10885](https://github.com/facebook/jest/pull/10885))
- `[jest-environment-jsdom]` [**BREAKING**] Remove Node globals `setImmediate` and `clearImmediate` ([#11222](https://github.com/facebook/jest/pull/11222))
- `[jest-get-type]` [**BREAKING**] Convert to ES Module ([#11359](https://github.com/facebook/jest/pull/11359))
- `[jest-globals]` [**BREAKING**] Disallow return values other than a `Promise` from hooks and tests ([#10512](https://github.com/facebook/jest/pull/10512))
- `[jest-globals]` [**BREAKING**] Disallow mixing a done callback and returning a `Promise` from hooks and tests ([#10512](https://github.com/facebook/jest/pull/10512))
- `[jest-haste-map]` Vendor `NodeWatcher` from `sane` ([#10919](https://github.com/facebook/jest/pull/10919))
- `[jest-jasmine2]` Fixed the issue of `beforeAll` & `afterAll` hooks getting executed even if it is inside a skipped `describe` block when it has child `tests` marked as either `only` or `todo` ([#10806](https://github.com/facebook/jest/pull/10806))
- `[jest-jasmine2]` Fixed the issues of child `tests` marked with `only` or `todo` getting executed even if it is inside a skipped parent `describe` block ([#10806](https://github.com/facebook/jest/pull/10806))
- `[jest-jasmine2]` Wrap all test functions so they open handles that were created in test functions using `done` callbacks can be detected ([#11382](https://github.com/facebook/jest/pull/11382))
- `[jest-reporter]` Handle empty files when reporting code coverage with V8 ([#10819](https://github.com/facebook/jest/pull/10819))
- `[jest-resolve]` Replace read-pkg-up with escalade package ([#10781](https://github.com/facebook/jest/pull/10781))
- `[jest-resolve]` Disable `jest-pnp-resolver` for Yarn 2 ([#10847](https://github.com/facebook/jest/pull/10847))
- `[jest-runtime]` [**BREAKING**] Do not inject `global` variable into module wrapper ([#10644](https://github.com/facebook/jest/pull/10644))
- `[jest-runtime]` [**BREAKING**] remove long-deprecated `jest.addMatchers`, `jest.resetModuleRegistry`, and `jest.runTimersToTime` ([#9853](https://github.com/facebook/jest/pull/9853))
- `[jest-runtime]` Fix stack overflow and promise deadlock when importing mutual dependant ES module ([#10892](https://github.com/facebook/jest/pull/10892))
- `[jest-runtime]` Prevent global module registry from leaking into `isolateModules` registry ([#10963](https://github.com/facebook/jest/pull/10963))
- `[jest-runtime]` Refactor to prevent race condition when linking and evaluating ES Modules ([#11150](https://github.com/facebook/jest/pull/11150))
- `[jest-runtime]` Throw correct error when attempting to load ESM via `require` ([#11260](https://github.com/facebook/jest/pull/11260))
- `[jest-runtime]` Do not cache modules that throw during evaluation ([#11263](https://github.com/facebook/jest/pull/11263))
- `[jest-transform]` Show enhanced `SyntaxError` message for all `SyntaxError`s ([#10749](https://github.com/facebook/jest/pull/10749))
- `[jest-transform]` [**BREAKING**] Refactor API to pass an options bag around rather than multiple boolean options ([#10753](https://github.com/facebook/jest/pull/10753))
- `[jest-transform]` [**BREAKING**] Refactor API of transformers to pass an options bag rather than separate `config` and other options ([#10834](https://github.com/facebook/jest/pull/10834))
- `[jest-types]` Fix `Config.ts` `projects` types ([#11285](https://github.com/facebook/jest/pull/11285))
- `[jest-util]` Replace micromatch with picomatch to fix issues with negated globs ([#11287](https://github.com/facebook/jest/pull/11287))
- `[jest-validate]` Use `en-US` locale to avoid case conversion problems while validating CLI options on machines with some certain locales(e.g. Turkish) set as default locale. ([#11412](https://github.com/facebook/jest/pull/11412))
- `[jest-worker]` [**BREAKING**] Use named exports ([#10623](https://github.com/facebook/jest/pull/10623))
- `[jest-worker]` Do not swallow errors during serialization ([#10984](https://github.com/facebook/jest/pull/10984))
- `[jest-worker]` Handle `ERR_IPC_CHANNEL_CLOSED` errors properly ([#11143](https://github.com/facebook/jest/pull/11143))
- `[pretty-format]` [**BREAKING**] Convert to ES Modules ([#10515](https://github.com/facebook/jest/pull/10515))
- `[pretty-format]` Only call `hasAttribute` if it's a function ([#11000](https://github.com/facebook/jest/pull/11000))
- `[pretty-format]` Handle jsdom attributes properly ([#11189](https://github.com/facebook/jest/pull/11189))
- `[pretty-format]` Import pretty-format using named imports ([#11360](https://github.com/facebook/jest/pull/11360))
### Chore & Maintenance
- `[*]` [**BREAKING**] Only support Node LTS releases and Node 15 ([#10685](https://github.com/facebook/jest/pull/10685))
- `[*]` [**BREAKING**] Add `exports` field to all `package.json`s ([#9921](https://github.com/facebook/jest/pull/9921))
- `[*]` Make it easier for Jest's packages to use the VM escape hatch ([#10824](https://github.com/facebook/jest/pull/10824))
- `[*]` [**BREAKING**] Remove deprecated `mapCoverage` ([#9968](https://github.com/facebook/jest/pull/9968))
- `[babel-jest]` [**BREAKING**] Migrate to ESM ([#11193](https://github.com/facebook/jest/pull/11193))
- `[docs]` Correct example using `browser-resolve` ([#11140](https://github.com/facebook/jest/pull/11140))
- `[docs]` Clarify `timers` configuration property ([#11376](https://github.com/facebook/jest/pull/11376))
- `[jest, jest-core]` [**BREAKING**] Replace `TestScheduler` export with `createTestScheduler` ([#11427](https://github.com/facebook/jest/pull/11427))
- `[jest-config]` [**BREAKING**] Remove `enabledTestsMap` config, use `filter` instead ([#10787](https://github.com/facebook/jest/pull/10787))
- `[jest-console]` [**BREAKING**] Move `root` into `config` and take `GlobalConfig` as mandatory parameter for `getConsoleOutput` ([#10126](https://github.com/facebook/jest/pull/10126))
- `[jest-console]` Export LogEntry ([#11017](https://github.com/facebook/jest/pull/11017))
- `[jest-fake-timers]` Clarify global behavior of `jest.useFakeTimers` and `jest.useRealTimers` ([#10867](https://github.com/facebook/jest/pull/10867))
- `[jest-haste-map]` [**BREAKING**] Migrate to ESM ([#10875](https://github.com/facebook/jest/pull/10875))
- `[jest-haste-map]` [**BREAKING**] Remove support for deprecated option `ignorePattern` as function ([#10348](https://github.com/facebook/jest/pull/10348))
- `[jest-jasmine2]` [**BREAKING**] Migrate to ESM ([#10906](https://github.com/facebook/jest/pull/10906))
- `[jest-jasmine2]` [**BREAKING**] Remove unused options argument from `Env` constructor ([#10240](https://github.com/facebook/jest/pull/10240))
- `[jest-repl, jest-runtime]` [**BREAKING**] Move the `jest-runtime` CLI into `jest-repl` ([#10016](https://github.com/facebook/jest/pull/10016) & [#10925](https://github.com/facebook/jest/pull/10925))
- `[jest-resolve]` [**BREAKING**] Migrate to ESM ([#10688](https://github.com/facebook/jest/pull/10688))
- `[jest-resolve-dependencies]` [**BREAKING**] Migrate to ESM ([#10876](https://github.com/facebook/jest/pull/10876))
- `[jest-mock]` [**BREAKING**] Migrate to ESM ([#10887](https://github.com/facebook/jest/pull/10887))
- `[jest-reporters]` [**BREAKING**] Make `node-notifier` a peer dependency ([#10977](https://github.com/facebook/jest/pull/10977))
- `[jest-resolve, jest-runtime]` [**BREAKING**] Use `Map`s instead of objects for all cached resources ([#10968](https://github.com/facebook/jest/pull/10968))
- `[jest-runner]` [**BREAKING**] Migrate to ESM ([#10900](https://github.com/facebook/jest/pull/10900))
- `[jest-runtime]` [**BREAKING**] Remove deprecated and unused `getSourceMapInfo` from Runtime ([#9969](https://github.com/facebook/jest/pull/9969))
- `[jest-transformer]` [**BREAKING**] Remove unused `isCoreModule` option ([#11166](https://github.com/facebook/jest/pull/11166))
- `[jest-util]` No longer checking `enumerable` when adding `process.domain` ([#10862](https://github.com/facebook/jest/pull/10862))
- `[jest-validate]` [**BREAKING**] Remove `recursiveBlacklist` option in favor of previously introduced `recursiveDenylist` ([#10650](https://github.com/facebook/jest/pull/10650))
- `[website]` Replace 'Github' with 'GitHub' ([#11279](https://github.com/facebook/jest/pull/11279))
- `[website]` Remove a language code from the link to the Node.js website ([#11282](https://github.com/facebook/jest/pull/11282))
- `[website]` Remove a duplicated word ([#11281](https://github.com/facebook/jest/pull/11281))
- `[website]` Add french to website ([#11361](https://github.com/facebook/jest/pull/11361))
### Performance
- `[jest-resolve]` Cache reading and parsing of `package.json`s ([#11076](https://github.com/facebook/jest/pull/11076))
- `[jest-runtime, jest-transform]` share `cacheFS` between runtime and transformer ([#10901](https://github.com/facebook/jest/pull/10901))
- `[jest-runtime]` Load `chalk` only once per worker ([#10864](https://github.com/facebook/jest/pull/10864))
- `[jest-worker]` Fix memory leak of previous task arguments while no new task is scheduled ([#11187](https://github.com/facebook/jest/pull/11187))
## 26.6.3
### Fixes
- `[jest-resolve-dependencies]` Continue dependency resolution if mock dependency can't be found ([#10779](https://github.com/facebook/jest/pull/10779))
## 26.6.2
### Features
- `[jest-core]` Add `findRelatedTests` and `nonFlagArgs` in allowed config options for `updateConfigAndRun` in watch plugins ([#10659](https://github.com/facebook/jest/pull/10659))
### Fixes
- `[babel-plugin-jest-hoist]` Preserve order of hoisted mock nodes within containing block ([#10536](https://github.com/facebook/jest/pull/10536))
- `[babel-plugin-jest-hoist]` Hoist pure constants to support experimental JSX transform in hoisted mocks ([#10723](https://github.com/facebook/jest/pull/10723))
- `[babel-preset-jest]` Update `babel-preset-current-node-syntax` to support top level await ([#10747](https://github.com/facebook/jest/pull/10747))
- `[expect]` Revert "Fix `objectContaining` to work recursively into sub-objects ([#10508](https://github.com/facebook/jest/pull/10508))" ([#10766](https://github.com/facebook/jest/pull/10766))
- `[jest-circus, jest-jasmine2]` fix: don't assume `stack` is always a string ([#10697](https://github.com/facebook/jest/pull/10697))
- `[jest-config]` Fix bug introduced in watch mode by PR [#10678](https://github.com/facebook/jest/pull/10678/files#r511037803) ([#10692](https://github.com/facebook/jest/pull/10692))
- `[jest-config]` Throw correct error for missing preset modules ([#10737](https://github.com/facebook/jest/pull/10737))
- `[jest-resolve-dependencies]` Resolve mocks as dependencies ([#10713](https://github.com/facebook/jest/pull/10713))
- `[jest-runtime]` Handle file URLs in dynamic imports ([#10744](https://github.com/facebook/jest/pull/10744))
- `[jest-runtime, babel-jest]` Pass more ESM options to `@jest/transform` ([#10752](https://github.com/facebook/jest/pull/10752))
- `[jest-runtime]` Properly inject `extraGlobals` into the runtime ([#10758](https://github.com/facebook/jest/pull/10758))
- `[jest-transform]` Link to ESM docs on syntax errors ([#10748](https://github.com/facebook/jest/pull/10748))
### Chore & Maintenance
- `[docs]` Add docs for using mocks in TypeScript ([#10415](https://github.com/facebook/jest/pull/10415))
- `[eslint-config-fb-strict]` Move package from this repo to `fbjs` repo ([#10739](https://github.com/facebook/jest/pull/10739))
- `[examples]` Update TypeScript example to show use of newer Jest types ([#10399](https://github.com/facebook/jest/pull/10399))
- `[jest-cli]` chore: standardize files and folder names ([#10698](https://github.com/facebook/jest/pull/10698))
- `[jest-config]` Switch ts-node `Register` type to `Service` due to deprecation ([#11210](https://github.com/facebook/jest/pull/11210))
## 26.6.1
### Features
- `[jest-runtime]` Support named exports from CommonJS as named ES Module imports ([#10673](https://github.com/facebook/jest/pull/10673))
- `[jest-validate]` Add support for `recursiveDenylist` option as an alternative to `recursiveBlacklist` ([#10236](https://github.com/facebook/jest/pull/10236))
### Fixes
- `[expect]` Fix `objectContaining` to work recursively into sub-objects ([#10508](https://github.com/facebook/jest/pull/10508))
- `[jest-cli, jest-core, jest-config, jest-types]` Fix `--onlyFailures` flag to work in non-watch mode ([#10678](https://github.com/facebook/jest/pull/10678/files))
- `[jest-config]` Fix for the `jest.config.ts` compiler to not interfere with `tsconfig.json` files ([#10675](https://github.com/facebook/jest/pull/10675))
- `[jest-message-util]` Update to work properly with Node 15 ([#10660](https://github.com/facebook/jest/pull/10660))
- `[jest-mock]` Allow to mock methods in getters (TypeScript 3.9 export) ([#10156](https://github.com/facebook/jest/pull/10156))
## 26.6.0
### Features
- `[jest-cli, jest-config]` Add support for the `jest.config.ts` configuration file ([#10564](https://github.com/facebook/jest/pull/10564))
### Fixes
- `[jest-config]` Simplify transform RegExp ([#10207](https://github.com/facebook/jest/pull/10207))
- `[jest-fake-timers]` Lazily instantiate mock timers ([#10551](https://github.com/facebook/jest/pull/10551))
- `[jest-runtime]` `require.main` is no longer `undefined` when using `jest.resetModules` ([#10626](https://github.com/facebook/jest/pull/10626))
- `[@jest/types]` Add missing values for `timers` ([#10632](https://github.com/facebook/jest/pull/10632))
### Chore & Maintenance
- `[docs]` Add step for fetching `backers.json` file in website setup docs ([#10631](https://github.com/facebook/jest/pull/10631))
- `[docs]` Add page detailing environment variables set by Jest ([#10630](https://github.com/facebook/jest/pull/10630))
- `[jest-circus]` Refactor `callAsyncCircusFn` parameters ([#10629](https://github.com/facebook/jest/pull/10629))
## 26.5.3
### Features
- `[jest-runtime]` add support for dynamic `import()` from CommonJS ([#10620](https://github.com/facebook/jest/pull/10620))
### Fixes
- `[jest-runner, jest-runtime]` `require.main` should not be `undefined` with `createRequire()` ([#10610](https://github.com/facebook/jest/pull/10610))
- `[jest-runtime]` add missing `module.path` property ([#10615](https://github.com/facebook/jest/pull/10615))
- `[jest-runtime]` Add `mainModule` instance variable to runtime ([#10621](https://github.com/facebook/jest/pull/10621))
- `[jest-runtime]` Evaluate Node core modules on dynamic `import()` ([#10622](https://github.com/facebook/jest/pull/10622))
- `[jest-validate]` Show suggestion only when unrecognized cli param is longer than 1 character ([#10604](https://github.com/facebook/jest/pull/10604))
- `[jest-validate]` Validate `testURL` as CLI option ([#10595](https://github.com/facebook/jest/pull/10595))
## 26.5.2
### Fixes
- `[*]` Revert usage of Escalade and rollback Yargs to v15 as it breaks Node 13 ([#10599](https://github.com/facebook/jest/pull/10599))
- `[jest-circus]` Setup globals before emitting `setup`, and include Jest globals in the `setup` payload ([#10598](https://github.com/facebook/jest/pull/10598))
- `[jest-mock]` Fix typings for `mockResolvedValue`, `mockResolvedValueOnce`, `mockRejectedValue` and `mockRejectedValueOnce` ([#10600](https://github.com/facebook/jest/pull/10600))
## 26.5.1
### Fixes
- `[jest-circus]` Handle older `jest-runtime` in `jest-circus`
## 26.5.0
### Features
- `[jest-circus, jest-config, jest-runtime]` Add new `injectGlobals` config and CLI option to disable injecting global variables into the runtime ([#10484](https://github.com/facebook/jest/pull/10484))
- `[jest-each]` Fixes `.each` type to always be callable ([#10447](https://github.com/facebook/jest/pull/10447))
- `[jest-runner]` Add support for `moduleLoader`s with `default` exports ([#10541](https://github.com/facebook/jest/pull/10541))
- `[@jest/create-cache-key-function]` Added a new package for creating cache keys ([#10587](https://github.com/facebook/jest/pull/10587))
### Fixes
- `[jest-circus, jest-jasmine2]` Find correct location for `test.each` tests ([#10413](https://github.com/facebook/jest/pull/10413))
- `[jest-console]` Add `Console` constructor to `console` object ([#10502](https://github.com/facebook/jest/pull/10502))
- `[jest-globals]` Fix lifecycle hook function types ([#10480](https://github.com/facebook/jest/pull/10480))
- `[jest-runtime]` Remove usage of `vm.compileFunction` due to a performance issue ([#10586](https://github.com/facebook/jest/pull/10586))
### Chore & Maintenance
- `[jest-resolve]` Replace read-pkg-up with escalade package ([10558](https://github.com/facebook/jest/pull/10558))
- `[jest-environment-jsdom]` Update jsdom to 16.4.0 ([10578](https://github.com/facebook/jest/pull/10578))
## 26.4.2
### Fixes
- `[expect]` Fix `toMatchObject` to work with inherited class getters ([#10381](https://github.com/facebook/jest/pull/10381))
- `[pretty-format]` Lower minimum node version to >= 10 ([#10435](https://github.com/facebook/jest/pull/10435))
## 26.4.1
### Fixes
- `[jest-core]` Don't report ELDHistogram as open handle ([#10417](https://github.com/facebook/jest/pull/10417))
- `[jest-matcher-utils]` Fix diffing object contain readonly symbol key object ([#10414](https://github.com/facebook/jest/pull/10414))
- `[jest-reporters]` Fixes notify reporter on Linux (using notify-send) ([#10393](https://github.com/facebook/jest/pull/10400))
- `[jest-snapshot]` Correctly handles arrays and property matchers in snapshots ([#10404](https://github.com/facebook/jest/pull/10404))
## 26.4.0
### Features
- `[jest-resolve]` Add support for `packageFilter` on custom resolver ([#10393](https://github.com/facebook/jest/pull/10393))
### Fixes
- `[pretty-format]` Handle `tagName` not being a string ([#10397](https://github.com/facebook/jest/pull/10397))
## 26.3.0
### Features
- `[jest-circus, jest-jasmine2]` Include `failureDetails` property in test results ([#9496](https://github.com/facebook/jest/pull/9496))
- `[jest-each, jest-jasmine, jest-circus]` Add support for `.concurrent.each` ([#9326](https://github.com/facebook/jest/pull/9326))
### Fixes
- `[jest-config]` Add `.pnp.js` to `transformIgnorePatterns` defaults ([#10383](https://github.com/facebook/jest/pull/10383))
- `[jest-leak-detector]` Wait properly for GC runs due to changes in Node 14.7 ([#10366](https://github.com/facebook/jest/pull/10366))
- `[jest-worker]` Downgrade minimum node version to 10.13 ([#10352](https://github.com/facebook/jest/pull/10352))
- `[docs]` Update snapshot testing documentation([#10359](https://github.com/facebook/jest/pull/10359))
## 26.2.2
### Fixes
- `[jest-cli]` Use correct file name to override existing jest config on init ([#10337](https://github.com/facebook/jest/pull/10337))
- `[jest-haste-map]` Properly detect support for native `find` ([#10346](https://github.com/facebook/jest/pull/10346))
## 26.2.1
### Fixes
- `[jest-worker]` Make sure to work with Node TS typings v12 ([#10336](https://github.com/facebook/jest/pull/10336))
## 26.2.0
### Features
- `[jest-core, jest-circus, jest-reporter, jest-runner]` Added support for reporting individual test cases using jest-circus ([#10227](https://github.com/facebook/jest/pull/10227))
- `[jest-config, jest-reporter, jest-runner, jest-test-sequencer]` Add `slowTestThreshold` configuration option ([#9366](https://github.com/facebook/jest/pull/9366))
- `[jest-haste-map]` Watchman crawler now includes dotfiles ([#10075](https://github.com/facebook/jest/pull/10075))
- `[jest-worker]` Added support for workers to send custom messages to parent in jest-worker ([#10293](https://github.com/facebook/jest/pull/10293))
- `[jest-worker]` Support passing `resourceLimits` ([#10335](https://github.com/facebook/jest/pull/10335))
- `[pretty-format]` Added support for serializing custom elements (web components) ([#10217](https://github.com/facebook/jest/pull/10237))
### Fixes
- `[expect]` Match symbols and bigints in `any()` ([#10223](https://github.com/facebook/jest/pull/10223))
- `[jest-changed-files]` Use `git diff` instead of `git log` for `--changedSince` ([#10155](https://github.com/facebook/jest/pull/10155))
- `[jest-console]` Add missing `console.timeLog` for compatibility with Node ([#10209](https://github.com/facebook/jest/pull/10209))
- `[jest-haste-map]` Check `find` binary supports the `-iname` parameter ([#10308](https://github.com/facebook/jest/pull/10308))
- `[jest-snapshot]` Strip added indentation for inline error snapshots ([#10217](https://github.com/facebook/jest/pull/10217))
### Chore & Maintenance
- `[*]` Add missing dependency on `@types/node` ([#10248](https://github.com/facebook/jest/pull/10248))
- `[jest-jasmine2]` Convert `PCancelable` to TypeScript ([#10215](https://github.com/facebook/jest/pull/10215))
- `[jest-jasmine2]` Refine typings of `queueRunner` ([#10215](https://github.com/facebook/jest/pull/10215))
- `[jest-jasmine2]` Remove usage of `Function` type ([#10216](https://github.com/facebook/jest/pull/10216))
- `[jest-resolve]` Improve types ([#10239](https://github.com/facebook/jest/pull/10239))
- `[docs]` Clarify the [`jest.requireActual(moduleName)`](https://jestjs.io/docs/jest-object#jestrequireactualmodulename) example
- `[jest-types]` Refine typings of `coverageReporters` ([#10275](https://github.com/facebook/jest/pull/10275))
## 26.1.0
### Features
- `[jest-mock]` Export `Mock`, `MockInstance`, `SpyInstance` types ([#10138](https://github.com/facebook/jest/pull/10138))
- `[jest-config]` Support config files exporting (`async`) `function`s ([#10001](https://github.com/facebook/jest/pull/10001))
- `[jest-cli, jest-core]` Add `--selectProjects` CLI argument to filter test suites by project name ([#8612](https://github.com/facebook/jest/pull/8612))
- `[jest-cli, jest-init]` Add `coverageProvider` to `jest --init` prompts ([#10044](https://github.com/facebook/jest/pull/10044))
### Fixes
- `[jest-console]` `getConsoleOutput` to receive global stack trace config and use it to format stack trace ([#10081](https://github.com/facebook/jest/pull/10081))
- `[jest-jasmine2]` Stop adding `:` after an error that has no message ([#9990](https://github.com/facebook/jest/pull/9990))
- `[jest-diff]` Control no diff message color with `commonColor` in diff options ([#9997](https://github.com/facebook/jest/pull/9997))
- `[jest-snapshot]` Fix TypeScript compilation ([#10008](https://github.com/facebook/jest/pull/10008))
### Chore & Maintenance
- `[docs]` Correct confusing filename in `enableAutomock` example ([#10055](https://github.com/facebook/jest/pull/10055))
- `[jest-core]` 🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉 ([#10000](https://github.com/facebook/jest/pull/10000))
- `[jest-core, jest-reporters, jest-test-result, jest-types]` Cleanup `displayName` type ([#10049](https://github.com/facebook/jest/pull/10049))
- `[jest-runtime]` Jest-internal sandbox escape hatch ([#9907](https://github.com/facebook/jest/pull/9907))
- `[jest-fake-timers]` Update `now` param type to support `Date` in addition to `number`. ([#10169](https://github.com/facebook/jest/pull/10169))
- `[docs]` Add param to `setSystemTime` docs and remove preceding period from it and `getRealSystemTime` ([#10169](https://github.com/facebook/jest/pull/10169))
- `[jest-snapshot, jest-util]` Replace `make-dir` with `fs.mkdir` ([#10136](https://github.com/facebook/jest/pull/10136))
- `[docs]` Added parcel-bundler documentation inside readme.md file
### Performance
- `[jest-core, jest-transform, jest-haste-map]` Improve Jest startup time and test runtime, particularly when running with coverage, by caching micromatch and avoiding recreating RegExp instances ([#10131](https://github.com/facebook/jest/pull/10131))
## 26.0.1
### Fixes
- `[jest-circus]` Backward compatibility for deprecated `DescribeBlock.tests` to not break e.g. Detox reporter
## 26.0.0
### Features
- `[jest-environment-jsdom]` [**BREAKING**] Upgrade `jsdom` to v16 ([#9606](https://github.com/facebook/jest/pull/9606))
- `[@jest/fake-timers]` Add possibility to use a modern implementation of fake timers, backed by `@sinonjs/fake-timers` ([#7776](https://github.com/facebook/jest/pull/7776))
- `[jest-runtime]` Add `createMockFromModule` as an alias for `genMockFromModule` ([#9962](https://github.com/facebook/jest/pull/9962))
### Fixes
- `[babel-jest]` Handle `null` being passed to `createTransformer` ([#9955](https://github.com/facebook/jest/pull/9955))
- `[jest-circus, jest-console, jest-jasmine2, jest-reporters, jest-util, pretty-format]` Fix time durating formatting and consolidate time formatting code ([#9765](https://github.com/facebook/jest/pull/9765))
- `[jest-circus]` [**BREAKING**] Fail tests if a test takes a done callback and have return values ([#9129](https://github.com/facebook/jest/pull/9129))
- `[jest-circus]` [**BREAKING**] Throw a proper error if a test / hook is defined asynchronously ([#8096](https://github.com/facebook/jest/pull/8096))
- `[jest-circus]` Throw more descriptive error if hook is defined inside test ([#9957](https://github.com/facebook/jest/pull/9957))
- `[jest-circus]` [**BREAKING**] Align execution order of tests to match `jasmine`'s top to bottom order ([#9965](https://github.com/facebook/jest/pull/9965))
- `[jest-config, jest-resolve]` [**BREAKING**] Remove support for `browser` field ([#9943](https://github.com/facebook/jest/pull/9943))
- `[jest-haste-map]` Stop reporting files as changed when they are only accessed ([#7347](https://github.com/facebook/jest/pull/7347))
- `[jest-resolve]` Show relative path from root dir for `module not found` errors ([#9963](https://github.com/facebook/jest/pull/9963))
- `[jest-runtime]` Fix absolute path moduleNameMapper + jest.mock bug ([#8727](https://github.com/facebook/jest/pull/8727))
### Chore & Maintenance
- `[*]` [**BREAKING**] TypeScript definitions requires a minimum of TypeScript v3.8 ([#9823](https://github.com/facebook/jest/pull/9823))
- `[*]` [**BREAKING**] Drop support for Node 8 ([#9423](https://github.com/facebook/jest/pull/9423))
- `[*]` Upgrade to chalk@4 ([#9752](https://github.com/facebook/jest/pull/9752))
- `[*]` Remove usage of `realpath-native` ([#9952](https://github.com/facebook/jest/pull/9952))
- `[docs]` Fix example reference implementation to use Jest with Phabricator ([#8662](https://github.com/facebook/jest/pull/8662))
- `[docs]` Added default compiler to tranform ([#8583](https://github.com/facebook/jest/pull/8583))
- `[docs]` Updated Testing Frameworks guide with React; make it generic ([#9106](https://github.com/facebook/jest/pull/9106))
- `[expect, jest-mock, pretty-format]` [**BREAKING**] Remove `build-es5` from package ([#9945](https://github.com/facebook/jest/pull/9945))
- `[@jest/fake-timers, @jest/environment]` [**BREAKING**] Rename `LolexFakeTimers` to `ModernFakeTimers` ([#9960](https://github.com/facebook/jest/pull/9960))
- `[jest-haste-map]` [**BREAKING**] removed `providesModuleNodeModules` ([#8535](https://github.com/facebook/jest/pull/8535))
- `[jest-runtime]` [**BREAKING**] Remove long-deprecated `require.requireActual` and `require.requireMock` methods ([#9854](https://github.com/facebook/jest/pull/9854))
## 25.5.4
### Fixes
- `[jest-jasmine2]` Don't run `beforeAll` / `afterAll` in skipped describe blocks ([#9931](https://github.com/facebook/jest/pull/9931))
### Chore & Maintenance
- `[jest-runtime]` Do not warn when mutating `require.cache` ([#9946](https://github.com/facebook/jest/pull/9946))
## 25.5.3
### Chore & Maintenance
- `[jest-circus]` Fix memory leak when running in band ([#9934](https://github.com/facebook/jest/pull/9934))
## 25.5.2
### Fixes
- `[jest-globals]` Export globals as values, not types ([#9925](https://github.com/facebook/jest/pull/9925))
## 25.5.1
### Fixes
- `[jest-haste-map]` Add missing `@types/graceful-fs` dependency ([#9913](https://github.com/facebook/jest/pull/9913))
- `[jest-runner]` Correctly serialize `Set` passed to worker ([#9915](https://github.com/facebook/jest/pull/9915))
- `[jest-runtime]` Vary ESM cache by query ([#9914](https://github.com/facebook/jest/pull/9914))
## 25.5.0
### Features
- `[@jest/globals]` New package so Jest's globals can be explicitly imported ([#9801](https://github.com/facebook/jest/pull/9801))
- `[jest-core]` Show coverage of sources related to tests in changed files ([#9769](https://github.com/facebook/jest/pull/9769))
- `[jest-runtime]` Populate `require.cache` ([#9841](https://github.com/facebook/jest/pull/9841))
### Fixes
- `[*]` Use `graceful-fs` directly in every package instead of relying on `fs` being monkey patched ([#9443](https://github.com/facebook/jest/pull/9443))
- `[expect]` Prints the Symbol name into the error message with a custom asymmetric matcher ([#9888](https://github.com/facebook/jest/pull/9888))
- `[jest-circus, jest-jasmine2]` Support older version of `jest-runtime` ([#9903](https://github.com/facebook/jest/pull/9903) & [#9842](https://github.com/facebook/jest/pull/9842))
- `[@jest/environment]` Make sure not to reference Jest types ([#9875](https://github.com/facebook/jest/pull/9875))
- `[jest-message-util]` Code frame printing should respect `--noStackTrace` flag ([#9866](https://github.com/facebook/jest/pull/9866))
- `[jest-runtime]` Support importing CJS from ESM using `import` statements ([#9850](https://github.com/facebook/jest/pull/9850))
- `[jest-runtime]` Support importing parallel dynamic `import`s ([#9858](https://github.com/facebook/jest/pull/9858))
- `[jest-transform]` Improve source map handling when instrumenting transformed code ([#9811](https://github.com/facebook/jest/pull/9811))
### Chore & Maintenance
- `[docs]` Add an example for mocking non-default export class
### Performance
- `[jest-resolve]` Update `resolve` to a version using native `realpath`, which is faster than the default JS implementation ([#9872](https://github.com/facebook/jest/pull/9872))
- `[jest-resolve]` Pass custom cached `realpath` function to `resolve` ([#9873](https://github.com/facebook/jest/pull/9873))
- `[jest-runtime]` Add `teardown` method to clear any caches when tests complete ([#9906](https://github.com/facebook/jest/pull/9906))
- `[jest-runtime]` Do not pass files required internally through transformation when loading them ([#9900](https://github.com/facebook/jest/pull/9900))
- `[jest-runtime]` Use `Map`s instead of object literals as cache holders ([#9901](https://github.com/facebook/jest/pull/9901))
## 25.4.0
- `[expect]` Support `async function`s in `toThrow` ([#9817](https://github.com/facebook/jest/pull/9817))
- `[jest-console]` Add code frame to `console.error` and `console.warn` ([#9741](https://github.com/facebook/jest/pull/9741))
- `[jest-runtime, jest-jasmine2, jest-circus]` Experimental, limited ECMAScript Modules support ([#9772](https://github.com/facebook/jest/pull/9772) & [#9842](https://github.com/facebook/jest/pull/9842))
### Fixes
- `[expect]` Restore support for passing functions to `toHaveLength` matcher ([#9796](https://github.com/facebook/jest/pull/9796))
- `[jest-changed-files]` `--only-changed` should include staged files ([#9799](https://github.com/facebook/jest/pull/9799))
- `[jest-circus]` Throw on nested test definitions ([#9828](https://github.com/facebook/jest/pull/9828))
- `[jest-each]` `each` will throw an error when called with too many arguments ([#9818](https://github.com/facebook/jest/pull/9818))
- `[jest-runner]` Don't print warning to stdout when using `--json` ([#9843](https://github.com/facebook/jest/pull/9843))
### Chore & Maintenance
- `[*]` Do not generate TypeScript declaration source maps ([#9822](https://github.com/facebook/jest/pull/9822))
- `[*]` Transpile code for Node 8.3, not 8.0 ([#9827](https://github.com/facebook/jest/pull/9827))
## 25.3.0
### Features
- `[babel-jest]` Support passing `supportsDynamicImport` and `supportsStaticESM` ([#9766](https://github.com/facebook/jest/pull/9766))
- `[babel-preset-jest]` Enable all syntax plugins not enabled by default that works on current version of Node ([#9774](https://github.com/facebook/jest/pull/9774))
- `[jest-circus]` Enable writing async test event handlers ([#9397](https://github.com/facebook/jest/pull/9397))
- `[jest-runtime, @jest/transformer]` Support passing `supportsDynamicImport` and `supportsStaticESM` ([#9597](https://github.com/facebook/jest/pull/9597))
### Chore & Maintenance
- `[*]` Replace `any`s with `unknown`s ([#9626](https://github.com/facebook/jest/pull/9626))
- `[@jest/transform]` Expose type `CacheKeyOptions` for `getCacheKey` ([#9762](https://github.com/facebook/jest/pull/9762))
- `[@jest/types]` Correct type `testRegex` for `ProjectConfig` ([#9780](https://github.com/facebook/jest/pull/9780))
## 25.2.7
### Fixes
- `[jest-matcher-utils]` Replace accessors with values to avoid calling setters in object descriptors when computing diffs for error reporting ([#9757](https://github.com/facebook/jest/pull/9757))
- `[@jest/watcher]` Correct return type of `shouldRunTestSuite` for `JestHookEmitter` ([#9753](https://github.com/facebook/jest/pull/9753))
## 25.2.6
### Chore & Maintenance
- `[*]` 25.2.5 was published without changes from 25.2.4 - 25.2.6 includes all changes from that version.
## 25.2.5
### Fixes
- `[@jest/console]` Fix `typescript<@3.8` compatibility in published types
### Chore & Maintenance
- `[docs]` Update link to watchman troubleshooting docs ([#9727](https://github.com/facebook/jest/pull/9727))
- `[@jest/message-util]` Remove dependency on `@jest/test-result`, which lead to a sprawling dependency tree ([#9749](https://github.com/facebook/jest/pull/9749))
- `[@jest/test-result]` Remove dependency on `@jest/transform`, which lead to a sprawling dependency tree ([#9747](https://github.com/facebook/jest/pull/9747))
- `[@jest/transform]` Expose type `TransformedSource` ([#9736](https://github.com/facebook/jest/pull/9736))
## 25.2.4
### Features
- `[jest-message-util]` Check for common errors when using the wrong test environment ([#8245](https://github.com/facebook/jest/pull/8245))
### Fixes
- `[jest-circus]` Fix type elision of jest-runtime imports ([#9717](https://github.com/facebook/jest/pull/9717))
- `[@jest/transform]` Fix coverage reporter for uncovered files without transformers, reverting [#9460](https://github.com/facebook/jest/pull/9460) ([#9724](https://github.com/facebook/jest/pull/9724))
## 25.2.3
### Fixes
- `[*]` Verify all packages are properly downleveled for older versions of TypeScript ([#9715](https://github.com/facebook/jest/pull/9715))
## 25.2.2
### Fixes
- `[jest-environment-node]` Remove `getVmContext` from Node env on older versions of Node ([#9708](https://github.com/facebook/jest/pull/9708))
- `[jest-runtime]` Return constructable class from `require('module')` ([#9711](https://github.com/facebook/jest/pull/9711))
## 25.2.1
### Fixes
- `[*]` Downlevel TypeScript definitions files for compatibility with TS<3.8 ([#9705](https://github.com/facebook/jest/pull/9705))
## 25.2.0
### Features
- `[jest-config]` Support ESM config files with `.js` extension ([#9573](https://github.com/facebook/jest/pull/9573)).
- `[jest-runtime]` Override `module.createRequire` to return a Jest-compatible `require` function ([#9469](https://github.com/facebook/jest/pull/9469))
- `[jest-haste-map]` [**BREAKING**] Remove `mapper` option ([#9581](https://github.com/facebook/jest/pull/9581))
- `[*]` Support array of paths for `moduleNameMapper` aliases ([#9465](https://github.com/facebook/jest/pull/9465))
- `[jest-reporters]` Adds ability to pass options to the istanbul-reporter through `coverageReporters` ([#9572](https://github.com/facebook/jest/pull/9572))
- `[jest-runtime]` Require stack when a module cannot be resolved ([#9681](https://github.com/facebook/jest/pull/9681))
- `[jest-transform]` `writeCacheFile` no longer calls `fsync` ([#9695](https://github.com/facebook/jest/pull/9695))
### Fixes
- `[expect]` Handle readonly properties correctly ([#9575](https://github.com/facebook/jest/pull/9575))
- `[jest-cli]` Set `coverageProvider` correctly when provided in config ([#9562](https://github.com/facebook/jest/pull/9562))
- `[jest-cli]` Allow specifying `.cjs` and `.mjs` config files by `--config` CLI option ([#9578](https://github.com/facebook/jest/pull/9578))
- `[jest-cli]` Update yargs to fix CLI flag overriding ([#9519](https://github.com/facebook/jest/pull/9519))
- `[jest-config]` Treat `setupFilesAfterEnv` like `setupFiles` when normalizing configs against presets ([#9495](https://github.com/facebook/jest/pull/9495))
- `[jest-config]` Support `.mjs` config files on Windows as well ([#9558](https://github.com/facebook/jest/pull/9558))
- `[jest-config]` Verify `rootDir` and all `roots` are directories ([#9569](https://github.com/facebook/jest/pull/9569))
- `[jest-config]` Ensure pattern of `replacePosixSep` is a string ([#9546](https://github.com/facebook/jest/pull/9546))
- `[jest-haste-map]` Fix crash on unix based systems without find ([#9579](https://github.com/facebook/jest/pull/9579))
- `[jest-jasmine2]` Fix `--testNamePattern` matching with `concurrent` tests ([#9090](https://github.com/facebook/jest/pull/9090))
- `[jest-matcher-utils]` Fix diff highlight of symbol-keyed object. ([#9499](https://github.com/facebook/jest/pull/9499))
- `[@jest/reporters]` Notifications should be fire&forget rather than having a timeout ([#9567](https://github.com/facebook/jest/pull/9567))
- `[jest-resolve]` Fix module identity preservation with symlinks and browser field resolution ([#9511](https://github.com/facebook/jest/pull/9511))
- `[jest-resolve]` Do not confuse directories with files ([#8912](https://github.com/facebook/jest/pull/8912))
- `[jest-resolve]` `moduleNameMapper` should take precedence over Node core modules ([#9563](https://github.com/facebook/jest/pull/9563))
- `[jest-runtime]` Reset `isolateModules` if it fails ([#9541](https://github.com/facebook/jest/pull/9541))
- `[jest-runtime]` Yarn PnP errors displayed to the user ([#9681](https://github.com/facebook/jest/pull/9681))
- `[jest-snapshot]` Downgrade semver to v6 to support node 8 ([#9451](https://github.com/facebook/jest/pull/9451))
- `[jest-snapshot]` Properly indent new snapshots in the presences of existing ones ([#9523](https://github.com/facebook/jest/pull/9523))
- `[jest-transform]` Correct sourcemap behavior for transformed and instrumented code ([#9460](https://github.com/facebook/jest/pull/9460))
- `[jest-transform]` Allow instrumentation of transformed files with weird file extensions ([#9589](https://github.com/facebook/jest/pull/9589))
- `[@jest/types]` Make `ConfigGlobals` an interface to allow for declaration merging. ([#9570](https://github.com/facebook/jest/pull/9570))
- `[pretty-format]` Export `OldPlugin` type ([#9491](https://github.com/facebook/jest/pull/9491))
### Chore & Maintenance
- `[docs]` Warn about unexpected behavior / bug of node-notifier when using the `notify` options.
- `[docs]` Grammatical corrections to Async docs page. ([#9679](https://github.com/facebook/jest/pull/9679))
- `[jest-resolver]` Use `resolve` package to implement custom module resolution ([#9520](https://github.com/facebook/jest/pull/9520))
- `[jest-runtime]` Move execution of `setupFiles` to `jest-runner` ([#9596](https://github.com/facebook/jest/pull/9596))
- `[jest-runtime]` Update anchor link in `helpers` ([#9616](https://github.com/facebook/jest/pull/9616))
- `[@jest/reporters]` Remove unused dependencies and type exports ([#9462](https://github.com/facebook/jest/pull/9462))
- `[website]` Update pictures of reports when matchers fail ([#9214](https://github.com/facebook/jest/pull/9214))