Features
[expect]Highlight substring differences when matcher fails, part 1 (#8448)[expect]Highlight substring differences when matcher fails, part 2 (#8528)[expect]Improve report when mock-spy matcher fails, part 1 (#8640)[expect]Improve report when mock-spy matcher fails, part 2 (#8649)[expect]Improve report when mock-spy matcher fails, part 3 (#8697)[expect]Improve report when mock-spy matcher fails, part 4 (#8710)[expect]Throw matcher error when received cannot be jasmine spy (#8747)[expect]Improve report when negative CalledWith assertion fails (#8755)[expect]Improve report when positive CalledWith assertion fails (#8771)[expect]Display equal values for ReturnedWith similar to CalledWith (#8791)[expect, jest-snapshot]Change color from green for some args in matcher hints (#8812)[jest-snapshot]Highlight substring differences when matcher fails, part 3 (#8569)[jest-core]Improve report when snapshots are obsolete (#8448)[jest-cli]Improve chai support (with detailed output, to match jest exceptions) (#8454)[*]Manage the global timeout with--testTimeoutcommand line argument. (#8456)[pretty-format]Render custom displayName of memoized components (#8546)[jest-validate]AllowmaxWorkersas part of thejest.config.js(#8565)[jest-runtime]Allow passing configuration objects to transformers (#7288)[@jest/core, @jest/test-sequencer]Support async sort in customtestSequencer(#8642)[jest-runtime, @jest/fake-timers]Addjest.advanceTimersToNextTimer(#8713)[@jest-transform]Extract transforming require logic withinjest-coreinto@jest-transform(#8756)[jest-matcher-utils]Add color options tomatcherHint(#8795)[jest-circus/jest-jasmine2]Give clearer output for Node assert errors (#8792)[jest-runner]Export all types in the type signature ofjest-runner(#8825)
Fixes
[jest-cli]Detect side-effect only imports when running--onlyChangedor--changedSince(#8670)[jest-cli]Allow--maxWorkersto work with % input again (#8565)[babel-plugin-jest-hoist]Expand list of whitelisted globals in global mocks (#8429)[jest-core]Make watch plugin initialization errors look nice (#8422)[jest-snapshot]Prevent inline snapshots from drifting when inline snapshots are updated (#8492)[jest-haste-map]Don't throw on missing mapper in Node crawler (#8558)[jest-core]Fix incorrectpassWithNoTestswarning (#8595)[jest-snapshots]Fix test retries that contain snapshots (#8629)[jest-mock]Fix incorrect assignments when restoring mocks in instances where they originally didn't exist (#8631)[expect]Fix stack overflow when matching objects with circular references (#8687)[jest-haste-map]Workaround a node >=12.5.0 bug that causes the process not to exit after tests have completed and cancerous memory growth (#8787)
Chore & Maintenance
[docs]Replace FlowType with TypeScript in CONTRIBUTING.MD code conventions[jest-leak-detector]remove code repeat (#8438)[docs]Add example tojest.requireActual(#8482)[docs]Add example tojest.mockfor mocking ES6 modules with thefactoryparameter (#8550)[docs]Add information about usingjest.doMockwith ES6 imports (#8573)[docs]Fix variable name in custom-matcher-api code example (#8582)[docs]Fix example used in custom environment docs (#8617)[docs]Updated react tutorial to refer to new package of react-testing-library (@testing-library/react) (#8753)[docs]Updated imports of react-testing-library to @testing-library/react in website (#8757)[jest-core]AddgetVersion(moved fromjest-cli) (#8706)[docs]Fix MockFunctions example that was using toContain instead of toContainEqual (#8765)[*]Make sure copyright header comment includes license (#8783)[*]Check copyright and license as one joined substring (#8815)[docs]Fix WatchPluginsjestHooks.shouldRunTestSuiteexample that receives an object (#8784)[*]Enforce LF line endings (#8809)[pretty-format]Delete obsolete link and simplify structure in README (#8824)[docs]Fix broken transform link on webpack page (#9155)