29.4.0

Features

• [expect, @jest/expect-utils] Support custom equality testers (#13654)
• [jest-config, jest-worker] Use os.availableParallelism if available to calculate number of workers to spawn (#13738)
• [@jest/globals, jest-mock] Add jest.replaceProperty() that replaces property value (#13496)
• [jest-haste-map] ignore Sapling vcs directories (.sl/) (#13674)
• [jest-resolve] Support subpath imports (#13705, #13723, #13777)
• [jest-runtime] Add jest.isolateModulesAsync for scoped module initialization of asynchronous functions (#13680)
• [jest-runtime] Add jest.isEnvironmentTornDown function (#13741)
• [jest-test-result] Added skipped and focused status to FormattedTestResult (#13700)
• [jest-transform] Support for asynchronous createTransformer (#13762)

Fixes

• [jest-environment-node] Fix non-configurable globals (#13687)
• [@jest/expect-utils] toMatchObject should handle Symbol properties (#13639)
• [jest-mock] Fix mockReset and resetAllMocks undefined return value(#13692)
• [jest-resolve] Add global paths to require.resolve.paths (#13633)
• [jest-resolve] Correct node core module detection when using node: specifiers (#13806)
• [jest-runtime] Support WASM files that import JS resources (#13608)
• [jest-runtime] Use the scriptTransformer cache in jest-runner (#13735)
• [jest-runtime] Enforce import assertions when importing JSON in ESM (#12755 & #13805)
• [jest-snapshot] Make sure to import babel outside of the sandbox (#13694)
• [jest-transform] Ensure the correct configuration is passed to preprocessors specified multiple times in the transform option (#13770)

Chore & Maintenance

• [@jest/fake-timers] Update @sinonjs/fake-timers (#13612)
• [docs] Improve custom puppeteer example to prevent worker warnings (#13619)

29.3.1

Fixes

• [jest-config] Do not warn about preset in ProjectConfig (#13583)

Performance

• [jest-transform] Defer creation of cache directory (#13420)

29.2.1

Features

• [@jest/globals, jest-mock] Add jest.Spied* utility types (#13440)

Fixes

• [jest-environment-node] make globalThis.performance writable for Node 19 and fake timers (#13467)
• [jest-mock] Revert #13398 to restore mocking of setters (#13472)

Performance

• [*] Use sha1 instead of sha256 for hashing (#13421)

29.2.0

Features

• [@jest/cli, jest-config] A seed for the test run will be randomly generated, or set by a CLI option (#13400)
• [@jest/cli, jest-config] --show-seed will display the seed value in the report, and can be set via a CLI flag or through the config file (#13400)
• [jest-config] Add readInitialConfig utility function (#13356)
• [jest-core] Allow testResultsProcessor to be async (#13343)
• [@jest/environment, jest-environment-node, jest-environment-jsdom, jest-runtime] Add getSeed() to the jest object (#13400)
• [expect, @jest/expect-utils] Allow isA utility to take a type argument (#13355)
• [expect] Expose AsyncExpectationResult and SyncExpectationResult types (#13411)

Fixes

• [babel-plugin-jest-hoist] Ignore TSTypeQuery when checking for hoisted references (#13367)
• [jest-core] Fix detectOpenHandles false positives for some special objects such as TLSWRAP (#13414)
• [jest-mock] Fix mocking of getters and setters on classes (#13398)
• [jest-reporters] Revert: Transform file paths into hyperlinks (#13399)
• [@jest/types] Infer type of each table correctly when the table is a tuple or array (#13381)
• [@jest/types] Rework typings to allow the *ReturnedWith matchers to be called with no argument (#13385)

Chore & Maintenance

• [*] Update @babel/* deps, resulting in slightly different stack traces for each (#13422)

Performance

• [jest-runner] Do not instrument v8 coverage data if coverage should not be collected (#13282)

29.1.2

Fixes

• [expect, @jest/expect] Revert buggy inference of argument types for *CalledWith and *ReturnedWith matchers introduced in 29.1.0 (#13339)
• [jest-worker] Add missing dependency on jest-util (#13341)

29.1.0

Features

• [expect, @jest/expect] Support type inference for function parameters in CalledWith assertions (#13268)
• [expect, @jest/expect] Infer type of *ReturnedWith matchers argument (#13278)
• [@jest/environment, jest-runtime] Allow jest.requireActual and jest.requireMock to take a type argument (#13253)
• [@jest/environment] Allow jest.mock and jest.doMock to take a type argument (#13254)
• [@jest/fake-timers] Add jest.now() to return the current fake clock time (#13244, #13246)
• [@jest/mock] Add withImplementation method for temporarily overriding a mock (#13281)
• [expect] Export toThrow* matchers (#13328)

Fixes

• [jest-circus, jest-jasmine2] Fix error messages for Node's assert.throes (#13322)
• [jest-haste-map] Remove __proto__ usage (#13256)
• [jest-mock] Improve spyOn typings to handle optional properties (#13247)
• [jest-mock] Fix mocking of getters and setters on classes (#13145)
• [jest-snapshot] Throw useful error when an array is passed as property matchers (#13263)
• [jest-snapshot] Prioritize parser used in the project (#13323)
• [jest-transform] Attempt to work around issues with atomic writes on Windows (#11423)

29.0.3

Features

• [@jest/environment, jest-runtime] Allow passing a generic type argument to jest.createMockFromModule<T>() method (#13202)
• [expect] Expose ExpectationResult type (#13240)
• [jest-snapshot] Expose Context type (#13240)
• [@jest/globals] Add jest.Mock type helper (#13235)

Fixes

• [jest-core] Capture execError during TestScheduler.scheduleTests and dispatch to reporters (#13203)
• [jest-resolve] Make sure to resolve module paths after looking at exports (#13242)
• [jest-resolve] Improve error on module not found deep in the require stack (#8704)
• [jest-snapshot] Fix typings of snapshot matchers (#13240)

Chore & Maintenance

• [*] Fix inconsistent workspace prefixes (#13217)
• [jest-haste-map] Expose a minimal public API to TypeScript (#13023)

29.0.2

Features

• [jest-transform] Expose TransformFactory type (#13184)

Fixes

• [babel-plugin-jest-hoist] Support imported jest in mock factory (#13188)
• [jest-mock] Align the behavior and return type of generateFromMetadata method (#13207)
• [jest-runtime] Support jest.resetModules() with ESM (#13211)

29.0.1

Fixes

• [jest-snapshot] Pass snapshotFormat through when diffing snapshots (#13181)

29.0.0

Features

• [expect] [BREAKING] Differentiate between MatcherContext MatcherUtils and MatcherState types (#13141)
• [jest-circus] Add support for test.failing.each (#13142)
• [jest-config] [BREAKING] Make snapshotFormat default to escapeString: false and printBasicPrototype: false (#13036)
• [jest-config] [BREAKING] Remove undocumented collectCoverageOnlyFrom option (#13156)
• [jest-environment-jsdom] [BREAKING] Upgrade to jsdom@20 (#13037, #13058)
• [@jest/globals] Add jest.Mocked, jest.MockedClass, jest.MockedFunction and jest.MockedObject utility types (#12727)
• [jest-mock] [BREAKING] Refactor Mocked* utility types. MaybeMockedDeep and MaybeMocked became Mocked and MockedShallow respectively; only deep mocked variants of MockedClass, MockedFunction and MockedObject are exported (#13123, #13124)
• [jest-mock] [BREAKING] Change the default jest.mocked helper’s behavior to deep mocked (#13125)
• [jest-snapshot] [BREAKING] Let babel find config when updating inline snapshots (#13150)
• [@jest/test-result, @jest/types] [BREAKING] Replace Bytes and Milliseconds types with number (#13155)
• [jest-worker] Adds workerIdleMemoryLimit option which is used as a check for worker memory leaks >= Node 16.11.0 and recycles child workers as required (#13056, #13105, #13106, #13107)
• [pretty-format] [BREAKING] Remove ConvertAnsi plugin in favour of jest-serializer-ansi-escapes (#13040)
• [pretty-format] Allow to opt out from sorting object keys with compareKeys: null (#12443)

Fixes

• [jest-config] Fix testing multiple projects with TypeScript config files (#13099)
• [@jest/expect-utils] Fix deep equality of ImmutableJS Record (#13055)
• [jest-haste-map] Increase the maximum possible file size that jest-haste-map can handle (#13094)
• [jest-runtime] Properly support CJS re-exports from dual packages (#13170)
• [jest-snapshot] Make prettierPath optional in SnapshotState (#13149)
• [jest-snapshot] Fix parsing error from inline snapshot files with JSX (#12760)
• [jest-worker] When a process runs out of memory worker exits correctly and doesn't spin indefinitely (#13054)

Chore & Maintenance

• [*] [BREAKING] Drop support for Node v12 and v17 (#13033)
• [docs] Fix webpack name (#13049)
• [docs] Explicit how to set n for --bail (#13128)
• [docs] Update Enzyme URL (#13166)
• [jest-leak-detector] Remove support for weak-napi (#13035)
• [jest-snapshot] [BREAKING] Require rootDir as argument to SnapshotState (#13150)