23.0.1

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)

23.0.0

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 (#5953)
• [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)