Jest 28 to 29

Features [create-jest] Add npm init / yarn create initialiser for Jest projects (#14465) [jest-validate] Allow deprecation warnings for unknown options (#14499) Fixes [jest-resolver] Replace unmatched capture groups in moduleNameMapper with

Fixes [jest-core] Fix typo in scheduleAndRun performance marker (#14434) [jest-environment-node] Make sure atob and btoa are writeable in Node 20 (#14446) [jest-worker] Additional error wrapper for parentPort.postMessage to fix unhandled Da

Fixes [expect, @jest/expect-utils] ObjectContaining support symbol as key (#14414) [expect] Remove @types/node from dependencies (#14385) [jest-core] Use workers in watch mode by default to avoid crashes (#14059 & #14085). [jest-reporters]

Fixes [jest-circus] Fix snapshot matchers in concurrent tests when nr of tests exceeds maxConcurrency (#14335) [@jest/core] When running global setup and teardown, do not try to change the message property of the thrown error object when th

Fixes [jest-circus] Revert #14110 as it was a breaking change (#14304)

Features [jest-circus, jest-snapshot] Add support for snapshot matchers in concurrent tests (#14139) [jest-cli] Include type definitions to generated config files (#14078) [jest-snapshot] Support arrays as property matchers (#14025) [jest-c

Features [jest-changed-files] Support Sapling (#13941) [jest-circus, @jest/cli, jest-config] Add feature to randomize order of tests via CLI flag or through the config file(#12922) [jest-cli, jest-config, @jest/core, jest-haste-map, @jest/r

Features [expect] Update toThrow() to be able to use error causes (#13606) [jest-core] allow to use workerIdleMemoryLimit with only 1 worker or runInBand option (#13846) [jest-message-util] Add support for error causes (#13868 & #13912) [je

Features [@jest/core] Instrument significant lifecycle events with performance.mark() (#13859) Fixes [expect, @jest/expect] Provide type of actual as a generic argument to Matchers to allow better-typed extensions (#13848) [jest-circus] Add

Features [expect, jest-circus, @jest/types] Implement numPassingAsserts of testResults to track the number of passing asserts in a test (#13795) [jest-core] Add newlines to JSON output (#13817) [@jest/reporters] Automatic log folding in Git

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.replaceP

Fixes [jest-config] Do not warn about preset in ProjectConfig (#13583) Performance [jest-transform] Defer creation of cache directory (#13420)

Features [jest-runtime] Support WebAssembly (Wasm) imports in ESM modules (#13505) Fixes [jest-config] Add config validation for projects option (#13565) [jest-mock] Treat cjs modules as objects so they can be mocked (#13513) [jest-worker]

Fixes [@jest/test-sequencer] Make sure sharding does not produce empty groups (#13476) [jest-circus] Test marked as todo are shown as todo when inside a focussed describe (#13504) [jest-mock] Ensure mock resolved and rejected values are pro

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 (#134

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 t

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)

Fixes [jest-mock] Revert #13145 which broke mocking of transpiled ES modules

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.requ

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]

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-runt

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

Blog post: https://jestjs.io/blog/2022/08/25/jest-29 Features [expect] [BREAKING] Differentiate between MatcherContext MatcherUtils and MatcherState types (#13141) [jest-circus] Add support for test.failing.each (#13142) [jest-config] [BREA