v23.6.0

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Features

• [jest-cli] Add changedSince to allowed watch mode configs (#​6955)
• [babel-jest] Add support for babel.config.js added in Babel 7.0.0 (#​6911)
• [jest-resolve] Add support for an experimental mapper option (Watchman crawler only) that adds virtual files to the Haste map (#​6940)

Fixes

• [jest-resolve] Only resolve realpath once in try-catch (#​6925)
• [expect] Fix TypeError in toBeInstanceOf on null or undefined (#​6912)
• [jest-jasmine2] Throw a descriptive error if the first argument supplied to a hook was not a function (#​6917) and (#​6931)
• [jest-circus] Throw a descriptive error if the first argument supplied to a hook was not a function (#​6917) and (#​6931)
• [expect] Fix variadic custom asymmetric matchers (#​6898)
• [jest-cli] Fix incorrect testEnvironmentOptions warning (#​6852)
• [jest-each] Prevent done callback being supplied to describe (#​6843)
• [jest-config] Better error message for a case when a preset module was found, but no jest-preset.js or jest-preset.json at the root (#​6863)
• [jest-haste-map] Catch crawler error when unsuccessfully reading directories (#​6761)

Chore & Maintenance

• [docs] Add custom toMatchSnapshot matcher docs (#​6837)
• [docs] Improve the documentation regarding preset configuration (#​6864)
• [docs] Clarify usage of --projects CLI option (#​6872)
• [docs] Correct failure-change notification mode (#​6878)
• [scripts] Don’t remove node_modules from subdirectories of presets in e2e tests (#​6948)
• [diff-sequences] Double-check number of differences in tests (#​6953)

v23.4.2

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Performance

• [jest-changed-files] limit git and hg commands to specified roots (#​6732)

Fixes

• [jest-circus] Fix retryTimes so errors are reset before re-running (#​6762)
• [docs] Update expect.objectContaining() description (#​6754)
• [babel-jest] Make getCacheKey() take into account createTransformer options (#​6699)
• [jest-jasmine2] Use prettier through require instead of localRequire. Fixes matchInlineSnapshot where prettier dependencies like path and fs are mocked with jest.mock. (#​6776)
• [docs] Fix contributors link (#​6711)
• [website] Fix website versions page to link to correct language (#​6734)
• [expect] Update toContain suggestion to contain equal message (#​6792)

v23.4.0

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Features

• [jest-haste-map] Add computeDependencies flag to avoid opening files if not needed (#​6667)
• [jest-runtime] Support require.resolve.paths (#​6471)
• [jest-runtime] Support paths option for require.resolve (#​6471)

Fixes

• [jest-runner] Force parallel runs for watch mode, to avoid TTY freeze (#​6647)
• [jest-cli] properly reprint resolver errors in watch mode (#​6407)
• [jest-cli] Write configuration to stdout when the option was explicitly passed to Jest (#​6447)
• [jest-cli] Fix regression on non-matching suites (6657)
• [jest-runtime] Roll back micromatch version to prevent regression when matching files (#​6661)

v23.2.0

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Features

• [jest-each] Add support for keyPaths in test titles (#​6457)
• [jest-cli] Add jest --init option that generates a basic configuration file with a short description for each option (#​6442)
• [jest.retryTimes] Add jest.retryTimes() option that allows failed tests to be retried n-times when using jest-circus. (#​6498)

Fixes

• [docs] Fixed error in documentation for expect.not.arrayContaining(array). (#​6491)
• [jest-cli] Add check to make sure one or more tests have run before notifying when using --notify (#​6495)
• [jest-cli] Pass globalConfig as a parameter to globalSetup and globalTeardown functions (#​6486)
• [jest-config] Add missing options to the defaults object (#​6428)
• [expect] Using symbolic property names in arrays no longer causes the toEqual matcher to fail (#​6391)
• [expect] toEqual no longer tries to compare non-enumerable symbolic properties, to be consistent with non-symbolic properties. (#​6398)
• [jest-util] console.timeEnd now properly log elapsed time in milliseconds. (#​6456)
• [jest-mock] Fix MockNativeMethods access in react-native jest.mock() (#​6505)
• [jest-cli] Fix reporters for moduleName = 'default' (#​6542)

Chore & Maintenance

• [docs] Add jest-each docs for 1 dimensional arrays (#​6444)

v23.0.1

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Chore & Maintenance

• [jest-jasemine2] Add dependency on jest-each (#​6308)
• [jest-each] Move jest-each into core Jest (#​6278)
• [examples] Update typescript example to using ts-jest (#​6260)

Fixes

• [pretty-format] Serialize inverse asymmetric matchers correctly (#​6272)

v23.0.0

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Features

• [expect] Expose getObjectSubset, iterableEquality, and subsetEquality (#​6210)
• [jest-snapshot] Add snapshot property matchers (#​6210)
• [jest-config] Support jest-preset.js files within Node modules (#​6185)
• [jest-cli] Add --detectOpenHandles flag which enables Jest to potentially track down handles keeping it open after tests are complete. (#​6130)
• [jest-jasmine2] Add data driven testing based on jest-each (#​6102)
• [jest-matcher-utils] Change "suggest to equal" message to be more advisory (#​6103)
• [jest-message-util] Don't ignore messages with vendor anymore (#​6117)
• [jest-validate] Get rid of jest-config dependency (#​6067)
• [jest-validate] Adds option to inject deprecationEntries (#​6067)
• [jest-snapshot] [BREAKING] Concatenate name of test, optional snapshot name and count (#​6015)
• [jest-runtime] Allow for transform plugins to skip the definition process method if createTransformer method was defined. (#​5999)
• [expect] Add stack trace for async errors (#​6008)
• [jest-jasmine2] Add stack trace for timeouts (#​6008)
• [jest-jasmine2] Add stack trace for thrown non-Errors (#​6008)
• [jest-runtime] Prevent modules from marking themselves as their own parent (#​5235)
• [jest-mock] Add support for auto-mocking generator functions (#​5983)
• [expect] Add support for async matchers (#​5919)
• [expect] Suggest toContainEqual (#​5948)
• [jest-config] Export Jest's default options (#​5948)
• [jest-editor-support] Move coverage to ProjectWorkspace.collectCoverage (#​5929)
• [jest-editor-support] Add coverage option to runner (#​5836)
• [jest-haste-map] Support extracting dynamic imports (#​5883)
• [expect] Improve output format for mismatchedArgs in mock/spy calls. (#​5846)
• [jest-cli] Add support for using --coverage in combination with watch mode, --onlyChanged, --findRelatedTests and more (#​5601)
• [jest-jasmine2] [BREAKING] Adds error throwing and descriptive errors to it/ test for invalid arguments. [jest-circus] Adds error throwing and descriptive errors to it/ test for invalid arguments (#​5558)
• [jest-matcher-utils] Add isNot option to matcherHint function (#​5512)
• [jest-config] Add <rootDir> to runtime files not found error report (#​5693)
• [expect] Make toThrow matcher pass only if Error object is returned from promises (#​5670)
• [expect] Add isError to utils (#​5670)
• [expect] Add inverse matchers (expect.not.arrayContaining, etc., #​5517)
• [expect] expect.extend now also extends asymmetric matchers (#​5503)
• [jest-mock] Update spyOnProperty to support spying on the prototype chain (#​5753)
• [jest-mock] Add tracking of return values in the mock property (#​5752)
• [jest-mock] Add tracking of thrown errors in the mock property (#​5764)
• [expect]Add nthCalledWith spy matcher (#​5605)
• [jest-cli] Add isSerial property that runners can expose to specify that they can not run in parallel (#​5706)
• [expect] Add .toBeCalledTimes and toHaveBeenNthCalledWith aliases (#​5826)
• [jest-cli] Interactive Snapshot Mode improvements (#​5864)
• [jest-editor-support] Add no-color option to runner (#​5909)
• [jest-jasmine2] Pretty-print non-Error object errors (#​5980)
• [jest-message-util] Include column in stack frames (#​5889)
• [expect] Introduce toStrictEqual (#​6032)
• [expect] Add return matchers (#​5879)
• [jest-cli] Improve snapshot summaries (#​6181)
• [expect] Include custom mock names in error messages (#​6199)
• [jest-diff] Support returning diff from oneline strings (#​6221)
• [expect] Improve return matchers (#​6172)
• [jest-cli] Overhaul watch plugin hooks names (#​6249)
• [jest-mock] [BREAKING] Include tracked call results in serialized mock (#​6244)

Fixes

• [jest-cli] Fix stdin encoding to utf8 for watch plugins. (#​6253)
• [expect] Better detection of DOM Nodes for equality (#​6246)
• [jest-cli] Fix misleading action description for F key when in "only failed tests" mode. (#​6167)
• [jest-worker] Stick calls to workers before processing them (#​6073)
• [babel-plugin-jest-hoist] Allow using console global variable (#​6075)
• [jest-jasmine2] Always remove node core message from assert stack traces (#​6055)
• [expect] Add stack trace when expect.assertions and expect.hasAssertions causes test failures. (#​5997)
• [jest-runtime] Throw a more useful error when trying to require modules after the test environment is torn down (#​5888)
• [jest-mock] [BREAKING] Replace timestamps with invocationCallOrder (#​5867)
• [jest-jasmine2] Install sourcemap-support into normal runtime to catch runtime errors (#​5945)
• [jest-jasmine2] Added assertion error handling inside afterAll hook (#​5884)
• [jest-cli] Remove the notifier actions in case of failure when not in watch mode. (#​5861)
• [jest-mock] Extend .toHaveBeenCalled return message with outcome (#​5951)
• [jest-runner] Assign process.env.JEST_WORKER_ID="1" when in runInBand mode (#​5860)
• [jest-cli] Add descriptive error message when trying to use globalSetup/globalTeardown file that doesn't export a function. (#​5835)
• [expect] Do not rely on instanceof RegExp, since it will not work for RegExps created inside of a different VM (#​5729)
• [jest-resolve] Update node module resolution algorithm to correctly handle symlinked paths (#​5085)
• [jest-editor-support] Update Settings to use spawn in shell option (#​5658)
• [jest-cli] Improve the error message when 2 projects resolve to the same config (#​5674)
• [jest-runtime] remove retainLines from coverage instrumentation (#​5692)
• [jest-cli] Fix update snapshot issue when using watchAll (#​5696)
• [expect] Fix rejects.not matcher (#​5670)
• [jest-runtime] Prevent Babel warnings on large files (#​5702)
• [jest-mock] Prevent mockRejectedValue from causing unhandled rejection (#​5720)
• [pretty-format] Handle React fragments better (#​5816)
• [pretty-format] Handle formatting of React.forwardRef and Context components (#​6093)
• [jest-cli] Switch collectCoverageFrom back to a string (#​5914)
• [jest-regex-util] Fix handling regex symbols in tests path on Windows (#​5941)
• [jest-util] Fix handling of NaN/Infinity in mock timer delay (#​5966)
• [jest-resolve] Generalise test for package main entries equivalent to ".". (#​5968)
• [jest-config] Ensure that custom resolvers are used when resolving the configuration (#​5976)
• [website] Fix website docs (#​5853)
• [expect] Fix isEqual Set and Map to compare object values and keys regardless of order (#​6150)
• [pretty-format] [BREAKING] Remove undefined props from React elements (#​6162)
• [jest-haste-map] Properly resolve mocked node modules without package.json defined (#​6232)

Chore & Maintenance

• [jest-runner] Move sourcemap installation from jest-jasmine2 to jest-runner (#​6176)
• [jest-cli] Use yargs's built-in version instead of rolling our own (#​6215)
• [docs] Add explanation on how to mock methods not implemented in JSDOM
• [jest-jasmine2] Simplify Env.execute and TreeProcessor to setup and clean resources for the top suite the same way as for all of the children suites (#​5885)
• [babel-jest] [BREAKING] Always return object from transformer (#​5991)
• [*] Run Prettier on compiled output (#​5858)
• [jest-cli] Add fileChange hook for plugins (#​5708)
• [docs] Add docs on using jest.mock(...) (#​5648)
• [docs] Mention Jest Puppeteer Preset (#​5722)
• [docs] Add jest-community section to website (#​5675)
• [docs] Add versioned docs for v22.4 (#​5733)
• [docs] Improve Snapshot Testing Guide (#​5812)
• [jest-runtime] [BREAKING] Remove jest.genMockFn and jest.genMockFunction (#​6173)
• [jest-message-util] Avoid adding unnecessary indent to blank lines in stack traces (#​6211)

v22.4.1

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Fixes

• [jest-haste-map] Parallelize Watchman calls in crawler (#​5640)
• [jest-editor-support] Update TypeScript definitions (#​5625)
• [babel-jest] Remove retainLines argument to babel. (#​5594)

Features

• [jest-runtime] Provide require.main property set to module with test suite (#​5618)

Chore & Maintenance

• [docs] Add note about Node version support (#​5622)
• [docs] Update to use yarn (#​5624)
• [docs] Add how to mock scoped modules to Manual Mocks doc (#​5638)

v22.4.0

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Fixes

• [jest-haste-map] Overhauls how Watchman crawler works fixing Windows (#​5615)
• [expect] Allow matching of Errors against plain objects (#​5611)
• [jest-haste-map] Do not read binary files in Haste, even when instructed to do so (#​5612)
• [jest-cli] Don't skip matchers for exact files (#​5582)
• [docs] Update discord links (#​5586)
• [jest-runtime] Align handling of testRegex on Windows between searching for tests and instrumentation checks (#​5560)
• [jest-config] Make it possible to merge transform option with preset (#​5505)
• [jest-util] Fix console.assert behavior in custom & buffered consoles (#​5576)

Features

• [docs] Add MongoDB guide (#​5571)
• [jest-runtime] Deprecate mapCoverage option. (#​5177)
• [babel-jest] Add option to return sourcemap from the transformer separately from source. (#​5177)
• [jest-validate] Add ability to log deprecation warnings for CLI flags. (#​5536)
• [jest-serializer] Added new module for serializing. Works using V8 or JSON (#​5609)
• [docs] Add a documentation note for project displayName configuration (#​5600)

Chore & Maintenance

• [docs] Update automatic mocks documentation (#​5630)