v30.3.0

Features

• [jest-config] Add defineConfig and mergeConfig helpers for type-safe Jest config (#15844)
• [jest-fake-timers] Add setTimerTickMode to configure how timers advance
• [*] Reduce token usage when run through LLMs (3f17932)

Fixes

• [jest-config] Keep CLI coverage output when using --json with --outputFile (#15918)
• [jest-mock] Use Symbol from test environment (#15858)
• [jest-reporters] Fix issue where console output not displayed for GHA reporter even with silent: false option (#15864)
• [jest-runtime] Fix issue where user cannot utilize dynamic import despite specifying --experimental-vm-modules Node option (#15842)
• [jest-test-sequencer] Fix issue where failed tests due to compilation errors not getting re-executed even with --onlyFailures CLI option (#15851)
• [jest-util] Make sure process.features.require_module is false (#15867)

Chore & Maintenance

• [*] Replace remaining micromatch uses with picomatch
• [deps] Update to sinon/fake-timers v15
• [docs] Update V30 migration guide to notify users on jest.mock() work with case-sensitive path (#15849)
• Updated Twitter icon to match the latest brand guidelines (#15869)

30.2.0

Chore & Maintenance

• [*] Update example repo for testing React Native projects (#15832)
• [*] Update jest-watch-typeahead to v3 (#15830)

Features

• [jest-environment-jsdom-abstract] Add support for JSDOM v27 (#15834)

Fixes

• [babel-jest] Export the TransformerConfig interface (#15820)
• [jest-config] Fix jest.config.ts with TS loader specified in docblock pragma (#15839)

30.1.3

Fixes

• Fix unstable_mockModule with node: prefixed core modules.

30.1.2

Fixes

• [jest-snapshot-utils] Correct snapshot header regexp to work with newline across OSes (#15803)

30.1.1

Fixes

• [jest-snapshot-utils] Fix deprecated goo.gl snapshot warning not handling Windows end-of-line sequences (#15800)

30.1.0

Features

• [jest-leak-detector] Configurable GC aggressiveness regarding to V8 heap snapshot generation (#15793)
• [jest-runtime] Reduce redundant ReferenceError messages
• [jest-core] Include test modules that failed to load when --onlyFailures is active

Fixes

• `[jest-snapshot-utils] Fix deprecated goo.gl snapshot guide link not getting replaced with fully canonical URL (#15787)
• [jest-circus] Fix it.concurrent not working with describe.skip (#15765)
• [jest-snapshot] Fix mangled inline snapshot updates when used with Prettier 3 and CRLF line endings
• [jest-runtime] Importing from @jest/globals in more than one file no longer breaks relative paths (#15772)

Chore

• [expect] Update docblock for toContain() to display info on substring check (#15789)

30.0.2

What's Changed

Fixes

• [jest-matcher-utils] Make 'deepCyclicCopyObject' safer by setting descriptors to a null-prototype object (#15689)
• [jest-util] Make garbage collection protection property writable (#15689)

Full Changelog: https://github.com/jestjs/jest/blob/main/CHANGELOG.md

Jest 30.0.1

What's Changed

Features

• [jest-resolver] Implement the defaultAsyncResolver (#15679)

Fixes

• [jest-resolver] Resolve builtin modules correctly (#15683)
• [jest-environment-node, jest-util] Avoid setting globals cleanup protection symbol when feature is off (#15684)

Chore & Maintenance

• [*] Remove and deprecate jest-repl package (#15673)
• [jest-resolver] Replace custom isBuiltinModule with node's isBuiltin (#15685)

New Contributors

• @vovkasm made their first contribution in #15687

Full Changelog: https://github.com/jestjs/jest/blob/main/CHANGELOG.md

Jest 30

Today we are happy to announce the release of Jest 30. This release features a substantial number of changes, fixes, and improvements. While it is one of the largest major releases of Jest ever, we admit that three years for a major release is too long. In the future, we are aiming to make more frequent major releases to keep Jest great for the next decade.

If you want to skip all the news and just get going, run npm install jest@^30.0.0 and follow the migration guide: Upgrading from Jest 29 to 30.

Read the full blog post

Features

• [*] Renamed globalsCleanupMode to globalsCleanup and --waitNextEventLoopTurnForUnhandledRejectionEvents to --waitForUnhandledRejections
• [expect] Add ArrayOf asymmetric matcher for validating array elements. (#15567)
• [babel-jest] Add option excludeJestPreset to allow opting out of babel-preset-jest (#15164)
• [expect] Revert #15038 to fix expect(fn).toHaveBeenCalledWith(expect.objectContaining(...)) when there are multiple calls (#15508)
• [jest-circus, jest-cli, jest-config] Add waitNextEventLoopTurnForUnhandledRejectionEvents flag to minimise performance impact of correct detection of unhandled promise rejections introduced in #14315 (#14681)
• [jest-circus] Add a waitBeforeRetry option to jest.retryTimes (#14738)
• [jest-circus] Add a retryImmediately option to jest.retryTimes (#14696)
• [jest-circus, jest-jasmine2] Allow setupFilesAfterEnv to export an async function (#10962)
• [jest-circus, jest-test-result] Add startedAt timestamp in TestCaseResultObject within onTestCaseResult (#15145)
• [jest-cli] Export buildArgv (#15310)
• [jest-config] [BREAKING] Add mts and cts to default moduleFileExtensions config (#14369)
• [jest-config] [BREAKING] Update testMatch and testRegex default option for supporting mjs, cjs, mts, and cts (#14584)
• [jest-config] Loads config file from provided path in package.json (#14044)
• [jest-config] Allow loading jest.config.cts files (#14070)
• [jest-config] Show rootDir in error message when a preset fails to load (#15194)
• [jest-config] Support loading TS config files using esbuild-register via docblock loader (#15190)
• [jest-config] Allow passing TS config loader options via docblock comment (#15234)
• [jest-config] If Node is running with type stripping enabled, do not require a TS loader (#15480)
• [@jest/core] Group together open handles with the same stack trace (#13417, & #14789)
• [@jest/core] Add perfStats to surface test setup overhead (#14622)
• [@jest/core] [BREAKING] Changed --filter to accept an object with shape { filtered: Array<string> } to match documentation (#13319)
• [@jest/core] Support --outputFile option for --listTests (#14980)
• [@jest/core] Stringify Errors properly with --json flag (#15329)
• [@jest/core, @jest/test-sequencer] [BREAKING] Exposes globalConfig & contexts to TestSequencer (#14535, & #14543)
• [jest-each] Introduce %$ option to add number of the test to its title (#14710)
• [@jest/environment] [BREAKING] Remove deprecated jest.genMockFromModule() (#15042)
• [@jest/environment] [BREAKING] Remove unnecessary defensive code (#15045)
• [jest-environment-jsdom] [BREAKING] Upgrade JSDOM to v22 (#13825)
• [@jest/environment-jsdom-abstract] Introduce new package which abstracts over the jsdom environment, allowing usage of custom versions of JSDOM (#14717)
• [jest-environment-node] Update jest environment with dispose symbols Symbol (#14888 & #14909)
• [expect, @jest/expect] [BREAKING] Add type inference for function parameters in CalledWith assertions (#15129)
• [@jest/expect-utils] Properly compare all types of TypedArrays (#15178)
• [@jest/fake-timers] [BREAKING] Upgrade @sinonjs/fake-timers to v13 (#14544 & #15470)
• [@jest/fake-timers] Exposing new modern timers function advanceTimersToFrame() which advances all timers by the needed milliseconds to execute callbacks currently scheduled with requestAnimationFrame (#14598)
• [jest-matcher-utils] Add SERIALIZABLE_PROPERTIES to allow custom serialization of objects (#14893)
• [jest-mock] Add support for the Explicit Resource Management proposal to use the using keyword with jest.spyOn(object, methodName) (#14895)
• [jest-reporters] Add support for DEC mode 2026 (#15008)
• [jest-resolver] Support file:// URLs as paths (#15154)
• [jest-resolve,jest-runtime,jest-resolve-dependencies] Pass the conditions when resolving stub modules (#15489)
• [jest-runtime] Exposing new modern timers function jest.advanceTimersToFrame() from @jest/fake-timers (#14598)
• [jest-runtime] Support import.meta.filename and import.meta.dirname (available from Node 20.11) (#14854)
• [jest-runtime] Support import.meta.resolve (#14930)
• [jest-runtime] [BREAKING] Make it mandatory to pass globalConfig to the Runtime constructor (#15044)
• [jest-runtime] Add unstable_unmockModule (#15080)
• [jest-runtime] Add onGenerateMock transformer callback for auto generated callbacks (#15433 & #15482)
• [jest-runtime] [BREAKING] Use vm.compileFunction over vm.Script (#15461)
• [@jest/schemas] Upgrade @sinclair/typebox to v0.34 (#15450)
• [@jest/types] test.each(): Accept a readonly (as const) table properly (#14565)
• [@jest/types] Improve argument type inference passed to test and describe callback functions from each tables (#14920)
• [jest-snapshot] [BREAKING] Add support for Error causes in snapshots (#13965)
• [jest-snapshot] Support Prettier 3 (#14566)
• [@jest/util-snapshot] Extract utils used by tooling from jest-snapshot into its own package (#15095)
• [pretty-format] [BREAKING] Do not render empty string children ('') in React plugin (#14470)

Fixes

• [expect] Show AggregateError to display (#15346)
• [*] Replace exit with exit-x (#15399)
• [babel-plugin-jest-hoist] Use denylist instead of the deprecated blacklist for Babel 8 support (#14109)
• [babel-plugin-jest-hoist] Do not rely on buggy Babel behaviour (#15415)
• [expect] Check error instance type for toThrow/toThrowError (#14576)
• [expect] Improve diff for failing expect.objectContaining (#15038)
• [expect] Use Array.isArray to check if an array is an Array (#15101)
• [expect] Fix Error cause assertion errors (#15339)
• [jest-changed-files] Prin...

v30.0.0-beta.4

What's Changed

• feat(runtime): use compileFunction over new Script by @SimenB in #15461

Full Changelog: v30.0.0-beta.3...v30.0.0-beta.4