Update jest monorepo to v24 (major)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
babel-jest	devDependencies	major	23.4.0 -> 24.9.0
jest (source)	devDependencies	major	23.4.1 -> 24.9.0

---

Release Notes

facebook/jest

v24.9.0

Compare Source

Features

• [expect] Highlight substring differences when matcher fails, part 1 (#​8448)
• [expect] Highlight substring differences when matcher fails, part 2 (#​8528)
• [expect] Improve report when mock-spy matcher fails, part 1 (#​8640)
• [expect] Improve report when mock-spy matcher fails, part 2 (#​8649)
• [expect] Improve report when mock-spy matcher fails, part 3 (#​8697)
• [expect] Improve report when mock-spy matcher fails, part 4 (#​8710)
• [expect] Throw matcher error when received cannot be jasmine spy (#​8747)
• [expect] Improve report when negative CalledWith assertion fails (#​8755)
• [expect] Improve report when positive CalledWith assertion fails (#​8771)
• [expect] Display equal values for ReturnedWith similar to CalledWith (#​8791)
• [expect, jest-snapshot] Change color from green for some args in matcher hints (#​8812)
• [jest-snapshot] Highlight substring differences when matcher fails, part 3 (#​8569)
• [jest-core] Improve report when snapshots are obsolete (#​8448)
• [jest-cli] Improve chai support (with detailed output, to match jest exceptions) (#​8454)
• [*] Manage the global timeout with --testTimeout command line argument. (#​8456)
• [pretty-format] Render custom displayName of memoized components (#​8546)
• [jest-validate] Allow maxWorkers as part of the jest.config.js (#​8565)
• [jest-runtime] Allow passing configuration objects to transformers (#​7288)
• [@jest/core, @​jest/test-sequencer] Support async sort in custom testSequencer (#​8642)
• [jest-runtime, @​jest/fake-timers] Add jest.advanceTimersToNextTimer (#​8713)
• [@jest-transform] Extract transforming require logic within jest-core into @jest-transform (#​8756)
• [jest-matcher-utils] Add color options to matcherHint (#​8795)
• [jest-circus/jest-jasmine2] Give clearer output for Node assert errors (#​8792)
• [jest-runner] Export all types in the type signature of jest-runner (#​8825)

Fixes

• [jest-cli] Detect side-effect only imports when running --onlyChanged or --changedSince (#​8670)
• [jest-cli] Allow --maxWorkers to work with % input again (#​8565)
• [babel-plugin-jest-hoist] Expand list of whitelisted globals in global mocks (#​8429)
• [jest-core] Make watch plugin initialization errors look nice (#​8422)
• [jest-snapshot] Prevent inline snapshots from drifting when inline snapshots are updated (#​8492)
• [jest-haste-map] Don't throw on missing mapper in Node crawler (#​8558)
• [jest-core] Fix incorrect passWithNoTests warning (#​8595)
• [jest-snapshots] Fix test retries that contain snapshots (#​8629)
• [jest-mock] Fix incorrect assignments when restoring mocks in instances where they originally didn't exist (#​8631)
• [expect] Fix stack overflow when matching objects with circular references (#​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)

Chore & Maintenance

• [docs] Replace FlowType with TypeScript in CONTRIBUTING.MD code conventions
• [jest-leak-detector] remove code repeat (#​8438)
• [docs] Add example to jest.requireActual (#​8482)
• [docs] Add example to jest.mock for mocking ES6 modules with the factory parameter (#​8550)
• [docs] Add information about using jest.doMock with ES6 imports (#​8573)
• [docs] Fix variable name in custom-matcher-api code example (#​8582)
• [docs] Fix example used in custom environment docs (#​8617)
• [docs] Updated react tutorial to refer to new package of react-testing-library (@​testing-library/react) (#​8753)
• [docs] Updated imports of react-testing-library to @​testing-library/react in website (#​8757)
• [jest-core] Add getVersion (moved from jest-cli) (#​8706)
• [docs] Fix MockFunctions example that was using toContain instead of toContainEqual (#​8765)
• [*] Make sure copyright header comment includes license (#​8783)
• [*] Check copyright and license as one joined substring (#​8815)
• [docs] Fix WatchPlugins jestHooks.shouldRunTestSuite example that receives an object (#​8784)
• [*] Enforce LF line endings (#​8809)
• [pretty-format] Delete obsolete link and simplify structure in README (#​8824)
• [docs] Fix broken transform link on webpack page (#​9155)

Performance

• [jest-watcher] Minor optimization for JestHook (#​8746)
• [@jest/reporters] Prevent runaway CPU useage with --notify on macOS (#​8830)

v24.8.0

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Features

• [jest-circus] Bind to Circus events via an optional event handler on any custom env (#​8344)
• [expect] Improve report when matcher fails, part 15 (#​8281)
• [jest-cli] Update --forceExit and "did not exit for one second" message colors (#​8329)
• [expect] Improve report when matcher fails, part 16 (#​8306)
• [jest-runner] Pass docblock pragmas to TestEnvironment constructor (#​8320)
• [docs] Add DynamoDB guide (#​8319)
• [expect] Improve report when matcher fails, part 17 (#​8349)
• [expect] Improve report when matcher fails, part 18 (#​8356)
• [expect] Improve report when matcher fails, part 19 (#​8367)

Fixes

• [jest-each] Fix bug with placeholder values (#​8289)
• [jest-snapshot] Inline snapshots: do not indent empty lines (#​8277)
• [@jest/runtime, @​jest/transform] Allow custom transforms for JSON dependencies (#​2578)
• [jest-core] Make detectOpenHandles imply runInBand (#​8283)
• [jest-haste-map] Fix the mapper option which was incorrectly ignored (#​8299)
• [jest-jasmine2] Fix describe return value warning being shown if the describe function throws (#​8335)
• [jest-environment-jsdom] Re-declare global prototype of JSDOMEnvironment (#​8352)
• [jest-snapshot] Handle arrays when merging snapshots (#​7089)
• [expect] Extract names of async and generator functions (#​8362)
• [jest-runtime] Fix virtual mocks not being unmockable after previously being mocked (#​8396)
• [jest-transform] Replace special characters in transform cache filenames to support Windows (#​8353)
• [jest-config] Allow exactly one project (#​7498)

Chore & Maintenance

• [expect] Fix label and add opposite assertion for toEqual tests (#​8288)
• [docs] Mention Jest MongoDB Preset (#​8318)
• [@jest/reporters] Migrate away from istanbul-api (#​8294)
• [*] Delete obsolete emails tag from header comment in test files (#​8377)
• [expect] optimize compare nodes (#​8368)
• [docs] Fix typo in MockFunctionAPI.md (#​8406)
• [LICENSE] Follow copyright header guidelines and delete For Jest software (#​8428)

Performance

• [jest-runtime] Fix module registry memory leak (#​8282)
• [jest-resolve] optimize resolve module path (#​8388)
• [jest-resolve] cache current directory (#​8412)
• [jest-get-type] Simplify checking for primitive (#​8416)

v24.7.1

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Fixes

• [@jest/config] Normalize testSequencer to its absolute path (#​8267)
• [@jest/console] Print to stderr when calling console.error, console.warn or console.assert using the jest-runtime CLI (#​8261)

v24.7.0

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Features

• [@jest/core, @​jest/test-sequencer] Move testSequencer to individual package @jest/test-sequencer (#​8223)
• [@jest/core, jest-cli, jest-config] Add option testSequencer allow user use custom sequencer. (#​8223)

Fixes

• [expect] Add negative equality tests for iterables (#​8260)
• [jest-haste-map] Resolve fs watcher EMFILE error (#​8258)

Chore & Maintenance

• [expect] Remove repetition of matcherName and options in matchers (#​8224)

Performance

v24.6.0

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Features

• [expect]: Improve report when matcher fails, part 13 (#​8077)
• [@jest/core] Filter API pre-filter setup hook (#​8142)
• [jest-snapshot] Improve report when matcher fails, part 14 (#​8132)
• [@jest/reporter] Display todo and skip test descriptions when verbose is true (#​8038)
• [jest-runner] Support default exports for test environments (#​8163)
• [pretty-format] Support React.Suspense (#​8180)
• [jest-snapshot] Indent inline snapshots (#​8198)
• [jest-config] Support colors in displayName configuration (#​8025)

Fixes

• [jest-circus] Fix test retries with beforeAll/beforeEach failures (#​8227)
• [expect] Fix circular references in iterable equality (#​8160)
• [jest-changed-files] Change method of obtaining git root (#​8052)
• [jest-each] Fix test function type (#​8145)
• [jest-fake-timers] getTimerCount not taking immediates and ticks into account (#​8139)
• [jest-runtime] Allow json file as manual mock (#​8159)
• [pretty-format] Print BigInt as a readable number instead of {} (#​8138)
• [jest-core] Fix ability to transform dependencies required from globalSetup script (#​8143)
• [@jest/reporters] Fix Cannot read property converageData of null (#​8168)
• [jest-worker] JEST_WORKER_ID starts at 1 (#​8205)
• [jest-config] Use default cwd even if config contains a cwd property (#​7923)
• [jest-resolve-dependencies]: Remove internal peer dependencies (#​8215)
• [jest-resolve]: Remove internal peer dependencies (#​8215)
• [jest-snapshot]: Remove internal peer dependencies (#​8215)
• [jest-resolve] Fix requireActual with moduleNameMapper (#​8210)
• [jest-haste-map] Fix haste map duplicate detection in watch mode (#​8237)

Chore & Maintenance

• [*] Remove flow from code base (#​8061)
• [*] Use property initializer syntax in Jest codebase (#​8117)
• [*] Move @​types/node to the root package.json (#​8129)
• [*] Add documentation and tests related to auto-mocking (#​8099)
• [*] Add jest-watch-typeahead as a devDependency (#​6449)
• [*] upgrade TS to 3.4.0-dev* for incremental builds (#​8149)
• [docs] Improve description of optional arguments in ExpectAPI.md (#​8126)

Performance

• [jest-haste-map] Optimize haste map data structure for serialization/deserialization (#​8171)
• [jest-haste-map] Avoid persisting haste map or processing files when not changed (#​8153)
• [jest-core] Improve performance of SearchSource.findMatchingTests by 15% (#​8184)
• [jest-resolve] Optimize internal cache lookup performance (#​8183)
• [jest-core] Dramatically improve watch mode performance (#​8201)
• [jest-transform] Cache regular expression instead of creating anew for every file in ScriptTransformer (#​8235)
• [jest-core] Fix memory leak of source map info and minor performance improvements (#​8234)
• [jest-console] Fix memory leak by releasing console output reference when printed to stdout (#​8233)
• [jest-runtime] Use Map instead of Object for module registry (#​8232)

v24.5.0

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Features

• [jest-haste-map] Expose throwOnModuleCollision via config.haste (#​8113)

Chore & Maintenance

• [expect] Export Matchers interface from expect (#​8093)

v24.4.0

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Features

• [jest-resolve] Now supports PnP environment without plugins (#​8094)

Fixes

• [expect] Compare DOM nodes even if there are multiple Node classes (#​8064)
• [jest-worker] worker.getStdout() can return null (#​8083)
• [jest-worker] Re-attach stdout and stderr from new processes/threads created after retries (#​8087)
• [jest-reporters/jest-runner] Serialize changedFiles passed to workers (#​8090)

Chore & Maintenance

• [*] Make sure to include d.ts files in the tarball when building (#​8086)

v24.3.1

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Fixes

• [jest-cli] export functions compatible with import {default} (#​8080)
• [jest-worker]: Fix retries and error notification in workers (#​8079)

Chore & Maintenance

• [pretty-format]: Use react-is instead of manual $typeof checks (#​8060)

v24.3.0

Compare Source

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)
• [expect]: Improve report when matcher fails, part 11 (#​8008)
• [expect]: Improve report when matcher fails, part 12 (#​8033)
• [expect]: Improve report when matcher fails, part 7 (#​7866)
• [expect]: Improve report when matcher fails, part 8 (#​7876)
• [expect]: Improve report when matcher fails, part 9 (#​7940)
• [jest-circus/jest-jasmine2] Warn if describe returns a value (#​7852)
• [jest-config] Print error information on preset normalization error (#​7935)
• [jest-get-type] Add isPrimitive function (#​7708)
• [jest-haste-map] Add skipPackageJson option (#​7778)
• [jest-util] Add isPromise (#​7852)
• [pretty-format] Support React.memo (#​7891)

Fixes

• [expect] Fix toStrictEqual not considering arrays with objects having undefined values correctly (#​7938)
• [expect] Fix custom async matcher stack trace (#​7652)
• [expect] Fix non-object received value in toHaveProperty (#​7986, #​8067)
• [expect] Fix non-symmetric equal for Number (#​7948)
• [expect] Remove duck typing and obsolete browser support code when comparing DOM nodes and use DOM-Level-3 API instead (#​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)
• [jest-changed-files] Fix pattern for HG changed files (#​8066)
• [jest-changed-files] Improve default file selection for Mercurial repos (#​7880)
• [jest-circus] Fix bug with test.only (#​7888)
• [jest-circus]: Throw explicit error when errors happen after test is considered complete (#​8005)
• [jest-cli] Fix prototype pollution vulnerability in dependency (#​7904)
• [jest-cli] Refactor -o and --coverage combined (#​7611)
• [jest-environment-node] Add missing globals: TextEncoder and TextDecoder (#​8022)
• [jest-haste-map] Enforce uniqueness in names (mocks and haste ids) (#​8002)
• [jest-jasmine2]: Throw explicit error when errors happen after test is considered complete (#​8005)
• [jest-mock] Adds a type check to prototype to allow mocks of objects with a primitive prototype property. (#​8040)
• [jest-transform] Normalize config and remove unnecessary checks, convert TestUtils.js to TypeScript (#​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)
• [jest-validate] Fix validating async functions (#​7894)
• [jest-worker] Fix jest-worker when using pre-allocated jobs (#​7934)
• [static] Remove console log '-' on the front page (#​7977)

Chore & Maintenance

• [*]: Setup building, linting and testing of TypeScript (#​7808, #​7855, #​7951)
• [@jest/console]: Extract custom console implementations from jest-util into a new separate package (#​8030)
• [@jest/core] Create new package, which is jest-cli minus yargs and prompts (#​7696)
• [@jest/core]: Migrate to TypeScript (#​7998)
• [@jest/fake-timers]: Extract FakeTimers class from jest-util into a new separate package (#​7987)
• [@jest/reporter]: New package extracted from jest-cli (#​7902)
• [@jest/reporters]: Migrate to TypeScript (#​7994, #​8045)
• [@jest/source-map]: Extract getCallsite function from jest-util into a new separate package (#​8029)
• [@jest/test-result]: Extract TestResult types and helpers into a new separate package (#​8034)
• [@jest/transform]: Migrate to TypeScript (#​7918, #​7945)
• [@jest/transform]: New package extracted from jest-runtime (#​7915)
• [@jest/types]: New package to handle shared types (#​7834)
• [babel-jest]: Migrate to TypeScript (#​7862)
• [babel-plugin-jest-hoist]: Migrate to TypeScript (#​7898)
• [diff-sequences]: Migrate to Typescript (#​7820)
• [docs] Add missing import to docs (#​7928)
• [docs] Update automock configuration, add note related to manual mocks (#​8051)
• [docs] Update/Organize TestSequencer and testSchedulerHelper code comments(#​7984)
• [docs]: Fix image paths in SnapshotTesting.md for current and version 24 (#​7872)
• [docs]: Improve runAllTimers doc (it exhausts the micro-task queue) (#​8031)
• [docs]: Update CONTRIBUTING.md to add information about running jest with jest-circus locally (#​8013).
• [expect]: Migrate to TypeScript (#​7919, #​8028)
• [jest-changed-files]: Migrate to TypeScript (#​7827)
• [jest-circus]: Migrate to TypeScript (#​7916)
• [jest-cli]: Migrate to TypeScript (#​8024)
• [jest-diff]: Migrate to TypeScript (#​7824, #​8027)
• [jest-docblock]: Migrate to TypeScript (#​7836)
• [jest-each]: Migrate to Typescript (#​8007)
• [jest-each]: Refactor into multiple files with better types (#​8018)
• [jest-environment-jsdom]: Migrate to TypeScript (#​7985)
• [jest-environment-node]: Migrate to TypeScript (#​7985)
• [jest-get-type]: Migrate to TypeScript (#​7818)
• [jest-haste-map]: Migrate to TypeScript (#​7854, #​7951)
• [jest-jasmine2]: TS migration (#​7970)
• [jest-leak-detector]: Migrate to TypeScript (#​7825)
• [jest-matcher-utils]: Migrate to TypeScript (#​7835)
• [jest-message-util]: Migrate to TypeScript (#​7834)
• [jest-mock]: Migrate to TypeScript (#​7847, #​7850, #​7971)
• [jest-phabricator]: Migrate to TypeScript (#​7965)
• [jest-regex-util]: Migrate to TypeScript (#​7822)
• [jest-repl]: Migrate to TypeScript (#​8000)
• [jest-resolve-dependencies]: Migrate to TypeScript (#​7922)
• [jest-resolve]: Migrate to TypeScript (#​7871)
• [jest-runner]: Migrate to TypeScript (#​7968)
• [jest-runtime]: Migrate to TypeScript (#​7964, #​7988)
• [jest-serializer]: Migrate to TypeScript (#​7841)
• [jest-snapshot]: Migrate to TypeScript (#​7899)
• [jest-util]: Migrate to TypeScript (#​7844, #​8021)
• [jest-validate]: Migrate to TypeScript (#​7991)
• [jest-watcher]: Migrate to TypeScript (#​7843)
• [jest-worker]: Migrate to TypeScript (#​7853)
• [jest]: Migrate to TypeScript (#​8024)
• [pretty-format]: Migrate to TypeScript (#​7809, #​7809)

Performance

• [jest-haste-map] Optimize haste map tracking of deleted files with Watchman. (#​8056)

v24.1.0

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Features

• [jest-resolve]: Pass default resolver into custom resolvers (#​7714)
• [jest-cli]: global{Setup,Teardown} use default export with es modules (#​7750)
• [jest-runtime] Better error messages when the jest environment is used after teardown by async code (#​7756)
• [jest-jasmine2] Will now only execute at most 5 concurrent tests within the same testsuite when using test.concurrent (#​7770)
• [jest-circus] Same as [jest-jasmine2], only 5 tests will run concurrently by default (#​7770)
• [jest-config] A new maxConcurrency option allows to change the number of tests allowed to run concurrently (#​7770)

Fixes

• [jest-runtime] Fix for mocks not working with module name mapper (#​7787)
• [jest-cli] Break dependency cycle when using Jest programmatically (#​7707)
• [jest-config] Extract setupFilesAfterEnv from preset (#​7724)
• [jest-cli] Do not execute any globalSetup or globalTeardown if there are no tests to execute (#​7745)
• [jest-runtime] Lock down version of write-file-atomic (#​7725)
• [jest-cli] Print log entries when logging happens after test environment is torn down (#​7731)
• [jest-config] Do not use a uuid as name since that breaks caching (#​7746)
• [jest-config] Make sure normalize can consume Defaults without warnings (#​7742)
• [jest-config] Allow moduleFileExtensions without 'js' for custom runners (#​7751)
• [jest-cli] Load transformers before installing require hooks (#​7752)
• [jest-cli] Handle missing numTodoTests in test results (#​7779)
• [jest-runtime] Exclude setup/teardown files from coverage report (#​7790)
• [babel-jest] Throw an error if babel-jest tries to transform a file ignored by Babel (#​7797)
• [babel-plugin-jest-hoist] Ignore TS type references when looking for out-of-scope references (#​7799)
• [expect] fixed asymmetrical equality of cyclic objects (#​7730)

Chore & Maintenance

• [jest] Update jest-junit to ^6.2.1 (#​7739)
• [website] Fix broken help link on homepage (#​7706)
• [docs] Changed Babel setup documentation to correctly compile async/await (#​7701)

v24.0.0

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Features

• [jest-each] [BREAKING] Add primitive pretty printing for interpolated titles (#​7694)
• [jest-runtime] Add jest.isolateModules for scoped module initialization (#​6701)
• [jest-diff] [BREAKING] Support diffing numbers and booleans instead of returning null for different ones (#​7605)
• [jest-diff] [BREAKING] Replace diff with diff-sequences package (#​6961)
• [jest-cli] [BREAKING] Only set error process error codes when they are non-zero (#​7363)
• [jest-config] [BREAKING] Deprecate setupTestFrameworkScriptFile in favor of new setupFilesAfterEnv (#​7119)
• [jest-worker] [BREAKING] Add functionality to call a setup method in the worker before the first call and a teardown method when ending the farm (#​7014)
• [jest-config] [BREAKING] Set default notifyMode to failure-change (#​7024)
• [jest-haste-map] [BREAKING] Remove support for @providesModule (#​6104)
• [jest-haste-map] [BREAKING] Replace internal data structures to improve performance (#​6960)
• [jest-haste-map] [BREAKING] Use relative paths to allow remote caching (#​7020)
• [jest-haste-map] [BREAKING] Remove name from hash in HasteMap.getCacheFilePath (#​7218)
• [babel-preset-jest] [BREAKING] Export a function instead of an object for Babel 7 compatibility (#​7203)
• [jest-haste-map] [BREAKING] Expose relative paths when getting the file iterator (#​7321)
• [jest-cli] [BREAKING] Run code transforms over global{Setup,Teardown} (#​7562)
• [jest-haste-map] Add hasteFS.getSize(path) (#​7580)
• [jest-cli] Print version ending in -dev when running a local Jest clone (#​7582)
• [jest-cli] Add Support for globalSetup and globalTeardown in projects (#​6865)
• [jest-runtime] Add extraGlobals to config to load extra global variables into the execution vm (#​7454)
• [jest-util] Export specialChars containing Unicode characters and ANSI escapes for console output (#​7532)
• [jest-config] Handle typescript (ts and tsx) by default (#​7533)
• [jest-validate] Add support for comments in package.json using a "//" key (#​7295)
• [jest-config] Add shorthand for watch plugins and runners (#​7213)
• [jest-jasmine2/jest-circus/jest-cli] Add test.todo (#​6996)
• [pretty-format] Option to not escape strings in diff messages (#​5661)
• [jest-haste-map] Add getFileIterator to HasteFS for faster file iteration (#​7010)
• [jest-config] Add readConfigs function, previously in jest-cli (#​7096)
• [jest-snapshot] Enable configurable snapshot paths (#​6143)
• [pretty-format] Support HTMLCollection and NodeList in DOMCollection plugin (#​7125)
• [jest-runtime] Pass the normalized configuration to script transformers (#​7148)
• [expect] Improve report when assertion fails, part 3 (#​7152)
• [jest-runtime] If require fails without a file extension, print all files that match with one (#​7160)
• [jest-haste-map] Make ignorePattern optional (#​7166)
• [jest-haste-map] Add getCacheFilePath to get the path to the cache file for a HasteMap instance (#​7217)
• [jest-runtime] Remove cacheDirectory from ignorePattern for HasteMap if not necessary (#​7166)
• [jest-validate] Add syntax to validate multiple permitted types (#​7207)
• [jest-config] Accept an array as as well as a string for testRegex ([#​7209]#​7209))
• [expect/jest-matcher-utils] Improve report when assertion fails, part 4 (#​7241)
• [expect/jest-matcher-utils] Improve report when assertion fails, part 5 (#​7557)
• [expect] Check constructor equality in .toStrictEqual() (#​7005)
• [jest-util] Add jest.getTimerCount() to get the count of scheduled fake timers (#​7285)
• [jest-config] Add dependencyExtractor option to use a custom module to extract dependencies from files (#​7313, #​7349, #​7350, #​7362)
• [jest-haste-map] Accept a getCacheKey method in hasteImplModulePath modules to reset the cache when the logic changes (#​7350)
• [jest-config] Add haste.computeSha1 option to compute the sha-1 of the files in the haste map (#​7345)
• [expect] expect(Infinity).toBeCloseTo(Infinity) Treats Infinity as equal in toBeCloseTo matcher (#​7405)
• [jest-worker] Add node worker-thread support to jest-worker (#​7408)
• [jest-config] Allow bail setting to be configured with a number allowing tests to abort after n of failures (#​7335)
• [jest-config] Allow % based configuration of --max-workers (#​7494)
• [jest-runner] Instantiate the test environment class with the current testPath (#​7442)
• [jest-config] Always resolve jest-environment-jsdom from jest-config (#​7476)
• [expect] Improve report when assertion fails, part 6 (#​7621)
• [jest-worker] Add enableWorkerThreads option to explicitly opt-in to worker_threads if available (#​7681)

Fixes

• [expect] Accept inherited properties in toHaveProperty matcher (#​7686)
• [jest-diff] Do not claim that -0 and 0 have no visual difference (#​7605)
• [jest-mock] Fix automock for numeric function names (#​7653)
• [jest-config] Ensure existsSync is only called with a string parameter (#​7607)
• [expect] toStrictEqual considers sparseness of arrays. (#​7591)
• [jest-cli] Fix empty coverage data for untested files (#​7388)
• [jest-cli] [BREAKING] Do not use text-summary coverage reporter by default if other reporters are configured (#​7058)
• [jest-mock] [BREAKING] Fix bugs with mock/spy result tracking of recursive functions (#​6381)
• [jest-haste-map] [BREAKING] Recover files correctly after haste name collisions are fixed (#​7329)
• [pretty-format] [BREAKING] Omit non-enumerable symbol properties (#​7448)
• [*] [BREAKING] Upgrade to Babel 7, dropping support for Babel 6 (#​7016)
• [jest-cli] Avoid watch mode causing bad terminal behavior in some cases (#​7523)
• [jest-runner/jest-worker] Fix missing console output in verbose mode (#​6871)
• [expect] Standardize file naming in expect (#​7306)
• [jest-each] Add empty array validation check (#​7249)
• [jest-cli] Interrupt tests if interactive watch plugin key is pressed (#​7222)
• [jest-each] Add each array validation check (#​7033)
• [jest-haste-map] Do not visit again files with the same sha-1 (#​6990)
• [jest-jasmine2] Fix memory leak in Error objects hold by the framework (#​6965)
• [jest-haste-map] Fixed Haste whitelist generation for scoped modules on Windows (#​6980)
• [jest-mock] Fix inheritance of static properties and methods in mocks (#​7003)
• [jest-mock] Fix mocking objects without Object.prototype in their prototype chain (#​7003)
• [jest-mock] Check _isMockFunction is true rather than truthy on potential mocks (#​7017)
• [jest-cli] Update jest-cli to show git ref in message when using changedSince (#​7028)
• [jest-jasmine2] Fix crash when test return Promise rejected with null (#​7049)
• [jest-runtime] Check _isMockFunction is true rather than truthy on potential global mocks (#​7017)
• [jest-jasmine] Show proper error message from async assert errors (#​6821)
• [jest-jasmine2] Better error message when a describe block is empty (#​6372)
• [jest-jasmine2] Pending calls inside async tests are reported as pending not failed (#​6782)
• [jest-circus] Better error message when a describe block is empty (#​6372)
• [jest-jasmine2] Add missing testLocationResults for xit and fit (#​6482)
• [expect] Return false from asymmetric matchers if received value isn’t string (#​7107)
• [jest-cli] Fix unhandled error when a bad revision is provided to changedSince (#​7115)
• [jest-config] Moved dynamically assigned cwd from jest-cli to default configuration in jest-config (#​7146)
• [jest-config] Fix getMaxWorkers on termux (#​7154)
• [jest-runtime] Throw an explicit error if js is missing from moduleFileExtensions (#​7160)
• [jest-runtime] Fix missing coverage when using negative glob pattern in testMatch (#​7170)
• [*] Ensure maxWorkers is at least 1 (was 0 in some cases where there was only 1 CPU) (#​7182)
• [jest-runtime] Fix transform cache invalidation when requiring a test file from multiple projects (#​7186)
• [jest-changed-files] Return correctly the changed files when using lastCommit=true on Mercurial repositories (#​7228)
• [babel-jest] Cache includes babel environment variables (#​7239)
• [jest-config] Use strings instead of RegExp instances in normalized configuration (#​7251)
• [jest-circus] Make sure to display real duration even if time is mocked (#​7264)
• [expect] Improves the failing message for toStrictEqual matcher. (#​7224)
• [expect] Improves the failing message for toEqual matcher. (#​7325)
• [jest-resolve] Fix not being able to resolve path to mapped file with custom platform (#​7312)
• [jest-message-util] Improve parsing of error messages for unusually formatted stack traces (#​7319)
• [jest-runtime] Ensure error message text is not lost on errors with code frames (#​7319)
• [jest-haste-map] Fix to resolve path that is start with words same as rootDir (#​7324)
• [expect] Fix toMatchObject matcher when used with Object.create(null) (#​7334)
• [jest-haste-map] Remove legacy condition for duplicate module detection (#​7333)
• [jest-haste-map] Fix require detection with trailing commas and ignore import typeof modules (#​7385)
• [jest-cli] Fix to set prettierPath via config file (#​7412)
• [expect] Test more precisely for class instance getters (#​7477)
• [jest-cli] Support dashed args (#​7497)
• [jest-cli] Fix to run in band tests if watch mode enable when runInBand arg used (#​7518)
• [jest-runtime] Fix mistake as test files when run coverage issue. (#​7506)
• [jest-cli] print info about passWithNoTests flag (#​7309)
• [pretty-format] Omit unnecessary symbol filter for object keys (#​7457)
• [jest-runtime] Fix requireActual on node_modules with mock present (#​7404)
• [jest-resolve] Fix isBuiltinModule to support versions of node without module.builtinModules (#​7565)
• [babel-jest] Set cwd to be resilient to it changing during the runtime of the tests (#​7574)
• [jest-snapshot] Write and read snapshots from disk even if fs is mocked (#​7080)
• [jest-config] Normalize config.cwd and config.rootDir using `realpath (#​7598)
• [jest-environment-node] Fix buffer property is not ArrayBuffer issue. (#​7626)
• [babel-plugin-jest-hoist] Ignore TS type annotations when looking for out-of-scope references (#​7641)
• [jest-config] Add name to project if one does not exist to pick correct resolver (#​5862)
• [jest-runtime] Pass watchPathIgnorePatterns to Haste instance (#​7585)
• [jest-runtime] Resolve mock files via Haste when using require.resolve (#​7687)

Chore & Maintenance

• [*] [BREAKING] Require Node.js 6+ for all packages (#​7258)
• [jest-util] [BREAKING] Remove long-deprecated globals for fake timers (#​7285)
• [*] [BREAKING] Upgrade to Micromatch 3 (#​6650)
• [*] [BREAKING] Remove regenerator-runtime injection (#​7595)
• [jest-worker] Disable worker_threads to avoid issues with libraries to ready for it (#​7681)
• [docs] Fix message property in custom matcher example to return a function instead of a constant. (#​7426)
• [jest-circus] Standardize file naming in jest-circus (#​7301)
• [docs] Add synchronous test.each setup (#​7150)
• [docs] Add this.extend to the Custom Matchers API reference (#​7130)
• [docs] Fix default value for coverageReporters value in configuration docs (#​7126)
• [docs] Add link for jest-extended in expect docs (#​7078)
• [jest-util] Add ErrorWithStack class (#​7067)
• [docs] Document --runTestsByPath CLI parameter (#​7046)
• [docs] Fix babel-core installation instructions (#​6745)
• [docs] Explain how to rewrite assertions to avoid large irrelevant diff (#​6971)
• [examples] add example using Babel 7 (#​6983)
• [docs] Replace shallow equality with referential identity in ExpectAPI.md (#​6991)
• [jest-changed-files] Refactor to use execa over child_process (#​6987)
• [*] Bump dated dependencies (#​6978)
• [scripts] Don’t make empty sub-folders for ignored files in build folder (#​7001)
• [docs] Add missing export statement in puppeteer_environment.js under docs/Puppeteer.md (#​7127)
• [docs] Removed useless expect.assertions in TestingAsyncCode.md (#​7131)
• [docs] Remove references to @providesModule which isn't supported anymore (#​7147)
• [docs] Update setupFiles documentation for clarity (#​7187)
• [docs] Change require.require* to jest.require* (#​7210)
• [jest-circus] Add readme.md (#​7198)
• [jest-editor-support] Remove from the repository (#​7232)
• [jest-test-typescript-parser] Remove from the repository (#​7232)
• [tests] Free tests from the dependency on value of FORCE_COLOR (#​6585)
• [*] Add babel plugin to make sure Jest is unaffected by fake Promise implementations ([#​7225](ht

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