Sourced from jest's releases.

v30.4.2

Fixes

• [jest-runtime] Fix named imports from CJS modules whose module.exports is a function with own-property exports (#16150)

Full Changelog: jestjs/jest@v30.4.1...v30.4.2

v30.4.1

Features

• [jest-config, jest-core, jest-runner, jest-schemas, jest-types] Allow custom runner configuration options via tuple format ['runner-path', {options}] (#16141)

Fixes

• [jest-runtime] Align CJS-from-ESM default export with Node: module.exports is always the ESM default, __esModule unwrapping is no longer applied (#16143)

Full Changelog: jestjs/jest@v30.4.0...v30.4.1

v30.4.0

Big release! 😀

Main feature is a rewrite of our custom runtime in preparation for stabilisation of native support of ESM. As part of that work require(esm) module is now supported on Node 24.9+ (still requires --experimental-vm-modules like before).

In addition we now support fake timers for the recently released Temporal API in Node v26.

React 19 is also supported properly in pretty-format, meaning snapshots of React components now work like they should.

Due to all the changes, there might be regressions that snuck in. Please report them!

Full list of changes below

Features

• [babel-jest] Support collecting coverage from .mts, .cts (and other) files (#15994)
• [jest-circus, jest-cli, jest-config, jest-core, jest-jasmine2, jest-types] Add --collect-tests flag to discover and list tests without executing them (#16006)
• [jest-config, jest-runner, jest-worker] Add workerGracefulExitTimeout config option to control how long workers are given to exit before being force-killed (#15984)
• [jest-config] Add support for jest.config.mts as a valid configuration file (#16005)
• [jest-config, jest-core, jest-reporters, jest-runner] verbose and silent can now be set per-project; the project-level value overrides the global value for that project's tests (#16133)
• [@jest/fake-timers] Accept Temporal.Duration in jest.advanceTimersByTime() and jest.advanceTimersByTimeAsync() (#16128)
• [@jest/fake-timers] Accept Temporal.Instant and Temporal.ZonedDateTime in jest.setSystemTime() and useFakeTimers({now}) (#16128)
• [@jest/fake-timers] Support faking Temporal.Now.* (#16131)
• [jest-mock] Add clearMocksOnScope(scope) on ModuleMocker for clearing every mock function exposed on a scope object (#16088)
• [jest-resolve] Add canResolveSync() on Resolver so callers can detect when a user-configured resolver only exports an async hook (#16064)
• [jest-runtime] Use synchronous evaluate() for ES modules without top-level await on Node versions that support it (v24.9+), and prefer the synchronous transform path when a sync transformer is configured (#16062)
• [jest-runtime] Support require() of ES modules on Node v24.9+ (#16074)
• [jest-runtime] Validate TC39 import attributes (with { type: 'json' }) on ESM imports (#16127)
• [@jest/transform] Add canTransformSync(filename) on ScriptTransformer so callers can pick the sync vs async transform path (#16062)
• [jest-util] Add isError helper (#16076)

... (truncated)

Sourced from jest's changelog.

30.4.2

Fixes

• [jest-runtime] Fix named imports from CJS modules whose module.exports is a function with own-property exports (#16150)

30.4.1

Features

• [jest-config, jest-core, jest-runner, jest-schemas, jest-types] Allow custom runner configuration options via tuple format ['runner-path', {options}] (#16141)

Fixes

• [jest-runtime] Align CJS-from-ESM default export with Node: module.exports is always the ESM default, __esModule unwrapping is no longer applied (#16143)

30.4.0

Features

• [babel-jest] Support collecting coverage from .mts, .cts (and other) files (#15994)
• [jest-circus, jest-cli, jest-config, jest-core, jest-jasmine2, jest-types] Add --collect-tests flag to discover and list tests without executing them (#16006)
• [jest-config, jest-runner, jest-worker] Add workerGracefulExitTimeout config option to control how long workers are given to exit before being force-killed (#15984)
• [jest-config] Add support for jest.config.mts as a valid configuration file (#16005)
• [jest-config, jest-core, jest-reporters, jest-runner] verbose and silent can now be set per-project; the project-level value overrides the global value for that project's tests (#16133)
• [@jest/fake-timers] Accept Temporal.Duration in jest.advanceTimersByTime() and jest.advanceTimersByTimeAsync() (#16128)
• [@jest/fake-timers] Accept Temporal.Instant and Temporal.ZonedDateTime in jest.setSystemTime() and useFakeTimers({now}) (#16128)
• [@jest/fake-timers] Support faking Temporal.Now.* (#16131)
• [jest-mock] Add clearMocksOnScope(scope) on ModuleMocker for clearing every mock function exposed on a scope object (#16088)
• [jest-resolve] Add canResolveSync() on Resolver so callers can detect when a user-configured resolver only exports an async hook (#16064)
• [jest-runtime] Use synchronous evaluate() for ES modules without top-level await on Node versions that support it (v24.9+), and prefer the synchronous transform path when a sync transformer is configured (#16062)
• [jest-runtime] Support require() of ES modules on Node v24.9+ (#16074)
• [jest-runtime] Validate TC39 import attributes (with { type: 'json' }) on ESM imports (#16127)
• [@jest/transform] Add canTransformSync(filename) on ScriptTransformer so callers can pick the sync vs async transform path (#16062)
• [jest-util] Add isError helper (#16076)
• [pretty-format] Support React 19 (#16123)

Fixes

• [expect-utils] Fix toStrictEqual failing on structuredClone results due to cross-realm constructor mismatch (#15959)
• [@jest/expect-utils] Prevent toMatchObject/subset matching from throwing when encountering exotic iterables (#15952)
• [fake-timers] Convert Date to milliseconds before passing to @sinonjs/fake-timers (#16029)
• [jest] Export GlobalConfig and ProjectConfig TypeScript types (#16132)
• [jest-circus] Prevent crash when asyncError is undefined for non-Error throws (#16003)
• [jest-circus, jest-jasmine2] Include Error.cause in JSON failureMessages output (#15967)
• [jest-config] Fix preset path resolution on Windows when the preset uses subpath exports (#15961)
• [jest-config] Allow collectCoverage and coverageProvider in project config without a validation warning (#16132)
• [jest-config] Project config validator now emits "is not supported in an individual project configuration" instead of "probably a typing mistake" for known global-only options (#16132)
• [jest-environment-node] Fix --localstorage-file warning on Node 25+ (#16086)
• [jest-reporters] Apply global coverage threshold to unmatched pattern files in addition to glob/path thresholds (#16137)

... (truncated)

• 746f2a0 v30.4.2
• b3b4a09 v30.4.1
• 5cbb21e v30.4.0
• db7141a fix: allow collectCoverage and coverageProvider in project config (#16132)
• See full diff in compare view

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