26.0.1

Fixes

• [jest-circus] Backward compatibility for deprecated DescribeBlock.tests to not break e.g. Detox reporter

26.0.0

Features

• [jest-environment-jsdom] [BREAKING] Upgrade jsdom to v16 (#9606)
• [@jest/fake-timers] Add possibility to use a modern implementation of fake timers, backed by @sinonjs/fake-timers (#7776)
• [jest-runtime] Add createMockFromModule as an alias for genMockFromModule (#9962)

Fixes

• [babel-jest] Handle null being passed to createTransformer (#9955)
• [jest-circus, jest-console, jest-jasmine2, jest-reporters, jest-util, pretty-format] Fix time durating formatting and consolidate time formatting code (#9765)
• [jest-circus] [BREAKING] Fail tests if a test takes a done callback and have return values (#9129)
• [jest-circus] [BREAKING] Throw a proper error if a test / hook is defined asynchronously (#8096)
• [jest-circus] Throw more descriptive error if hook is defined inside test (#9957)
• [jest-circus] [BREAKING] Align execution order of tests to match jasmine's top to bottom order (#9965)
• [jest-config, jest-resolve] [BREAKING] Remove support for browser field (#9943)
• [jest-haste-map] Stop reporting files as changed when they are only accessed (#7347)
• [jest-resolve] Show relative path from root dir for module not found errors (#9963)
• [jest-runtime] Fix absolute path moduleNameMapper + jest.mock bug (#8727)

Chore & Maintenance

• [*] [BREAKING] TypeScript definitions requires a minimum of TypeScript v3.8 (#9823)
• [*] [BREAKING] Drop support for Node 8 (#9423)
• [*] Upgrade to chalk@4 (#9752)
• [*] Remove usage of realpath-native (#9952)
• [docs] Fix example reference implementation to use Jest with Phabricator (#8662)
• [docs] Added default compiler to transform (#8583)
• [docs] Updated Testing Frameworks guide with React; make it generic (#9106)
• [expect, jest-mock, pretty-format] [BREAKING] Remove build-es5 from package (#9945)
• [@jest/fake-timers, @jest/environment] [BREAKING] Rename LolexFakeTimers to ModernFakeTimers (#9960)
• [jest-haste-map] [BREAKING] removed providesModuleNodeModules (#8535)
• [jest-runtime] [BREAKING] Remove long-deprecated require.requireActual and require.requireMock methods (#9854)

25.5.2

Fixes

• [jest-globals] Export globals as values, not types (#9925)

25.5.0

Features

• [@jest/globals] New package so Jest's globals can be explicitly imported (#9801)
• [jest-core] Show coverage of sources related to tests in changed files (#9769)
• [jest-runtime] Populate require.cache (#9841)

Fixes

• [*] Use graceful-fs directly in every package instead of relying on fs being monkey patched (#9443)
• [expect] Prints the Symbol name into the error message with a custom asymmetric matcher (#9888)
• [jest-circus, jest-jasmine2] Support older version of jest-runtime (#9903 & #9842)
• [@jest/environment] Make sure not to reference Jest types (#9875)
• [jest-message-util] Code frame printing should respect --noStackTrace flag (#9866)
• [jest-runtime] Support importing CJS from ESM using import statements (#9850)
• [jest-runtime] Support importing parallel dynamic imports (#9858)
• [jest-transform] Improve source map handling when instrumenting transformed code (#9811)

Chore & Maintenance

• [docs] Add an example for mocking non-default export class

Performance

• [jest-resolve] Update resolve to a version using native realpath, which is faster than the default JS implementation (#9872)
• [jest-resolve] Pass custom cached realpath function to resolve (#9873)
• [jest-runtime] Add teardown method to clear any caches when tests complete (#9906)
• [jest-runtime] Do not pass files required internally through transformation when loading them (#9900)
• [jest-runtime] Use Maps instead of object literals as cache holders (#9901)