Update dependency jest to v26

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
jest (source)	devDependencies	major	24.7.1 -> 26.1.0

---

Release Notes

facebook/jest

v26.1.0

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Features

• [jest-mock] Export Mock, MockInstance, SpyInstance types (#​10138)
• [jest-config] Support config files exporting (async) functions (#​10001)
• [jest-cli, jest-core] Add --selectProjects CLI argument to filter test suites by project name (#​8612)
• [jest-cli, jest-init] Add coverageProvider to jest --init prompts (#​10044)

Fixes

• [jest-console] getConsoleOutput to receive global stack trace config and use it to format stack trace (#​10081)
• [jest-jasmine2] Stop adding : after an error that has no message (#​9990)
• [jest-diff] Control no diff message color with commonColor in diff options (#​9997)
• [jest-snapshot] Fix TypeScript compilation (#​10008)

Chore & Maintenance

• [docs] Correct confusing filename in enableAutomock example (#​10055)
• [jest-core] 🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉 (#​10000)
• [jest-core, jest-reporters, jest-test-result, jest-types] Cleanup displayName type (#​10049)
• [jest-runtime] Jest-internal sandbox escape hatch (#​9907)
• [jest-fake-timers] Update now param type to support Date in addition to number. (#​10169)
• [docs] Add param to setSystemTime docs and remove preceding period from it and getRealSystemTime (#​10169)
• [jest-snapshot, jest-util] Replace make-dir with fs.mkdir (#​10136)
• [docs] Added parcel-bundler documentation inside readme.md file

Performance

• [jest-core, jest-transform, jest-haste-map] Improve Jest startup time and test runtime, particularly when running with coverage, by caching micromatch and avoiding recreating RegExp instances (#​10131)

v26.0.1

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Fixes

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

v26.0.0

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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 tranform (#​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)

v25.5.4

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Fixes

• [jest-jasmine2] Don't run beforeAll / afterAll in skipped describe blocks (#​9931)

Chore & Maintenance

• [jest-runtime] Do not warn when mutating require.cache (#​9946)

v25.5.3

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Chore & Maintenance

• [jest-circus] Fix memory leak when running in band (#​9934)

v25.5.2

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Fixes

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

v25.5.1

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Fixes

• [jest-haste-map] Add missing @types/graceful-fs dependency (#​9913)
• [jest-runner] Correctly serialize Set passed to worker (#​9915)
• [jest-runtime] Vary ESM cache by query (#​9914)

v25.5.0

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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)

v25.4.0

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• [expect] Support async functions in toThrow (#​9817)
• [jest-console] Add code frame to console.error and console.warn (#​9741)
• [jest-runtime, jest-jasmine2, jest-circus] Experimental, limited ECMAScript Modules support (#​9772 & #​9842)

Fixes

• [expect] Restore support for passing functions to toHaveLength matcher (#​9796)
• [jest-changed-files] --only-changed should include staged files (#​9799)
• [jest-circus] Throw on nested test definitions (#​9828)
• [jest-each] each will throw an error when called with too many arguments (#​9818)
• [jest-runner] Don't print warning to stdout when using --json (#​9843)

Chore & Maintenance

• [*] Do not generate TypeScript declaration source maps (#​9822)
• [*] Transpile code for Node 8.3, not 8.0 (#​9827)

v25.3.0

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Features

• [babel-jest] Support passing supportsDynamicImport and supportsStaticESM (#​9766)
• [babel-preset-jest] Enable all syntax plugins not enabled by default that works on current version of Node (#​9774)
• [jest-circus] Enable writing async test event handlers (#​9397)
• [jest-runtime, @​jest/transformer] Support passing supportsDynamicImport and supportsStaticESM (#​9597)

Chore & Maintenance

• [*] Replace anys with unknowns (#​9626)
• [@jest/transform] Expose type CacheKeyOptions for getCacheKey (#​9762)
• [@jest/types] Correct type testRegex for ProjectConfig (#​9780)

v25.2.7

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Fixes

• [jest-matcher-utils] Replace accessors with values to avoid calling setters in object descriptors when computing diffs for error reporting (#​9757)
• [@jest/watcher] Correct return type of shouldRunTestSuite for JestHookEmitter (#​9753)

v25.2.6

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Chore & Maintenance

• [*] 25.2.5 was published without changes from 25.2.4 - 25.2.6 includes all changes from that version.

v25.2.4

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Features

• [jest-message-util] Check for common errors when using the wrong test environment (#​8245)

Fixes

• [jest-circus] Fix type elision of jest-runtime imports (#​9717)
• [@jest/transform] Fix coverage reporter for uncovered files without transformers, reverting #​9460 (#​9724)

v25.2.3

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Fixes

• [*] Verify all packages are properly downleveled for older versions of TypeScript (#​9715)

v25.2.2

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Fixes

• [jest-environment-node] Remove getVmContext from Node env on older versions of Node (#​9708)
• [jest-runtime] Return constructable class from require('module') (#​9711)

v25.2.1

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Fixes

• [*] Downlevel TypeScript definitions files for compatibility with TS<3.8 (#​9705)

v25.2.0

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Features

• [jest-config] Support ESM config files with .js extension (#​9573).
• [jest-runtime] Override module.createRequire to return a Jest-compatible require function (#​9469)
• [jest-haste-map] [BREAKING] Remove mapper option (#​9581)
• [*] Support array of paths for moduleNameMapper aliases (#​9465)
• [jest-reporters] Adds ability to pass options to the istanbul-reporter through coverageReporters (#​9572)
• [jest-runtime] Require stack when a module cannot be resolved (#​9681)
• [jest-transform] writeCacheFile no longer calls fsync (#​9695)

Fixes

• [expect] Handle readonly properties correctly (#​9575)
• [jest-cli] Set coverageProvider correctly when provided in config (#​9562)
• [jest-cli] Allow specifying .cjs and .mjs config files by --config CLI option (#​9578)
• [jest-cli] Update yargs to fix CLI flag overriding (#​9519)
• [jest-config] Treat setupFilesAfterEnv like setupFiles when normalizing configs against presets (#​9495)
• [jest-config] Support .mjs config files on Windows as well (#​9558)
• [jest-config] Verify rootDir and all roots are directories (#​9569)
• [jest-config] Ensure pattern of replacePosixSep is a string (#​9546)
• [jest-haste-map] Fix crash on unix based systems without find (#​9579)
• [jest-jasmine2] Fix --testNamePattern matching with concurrent tests (#​9090)
• [jest-matcher-utils] Fix diff highlight of symbol-keyed object. (#​9499)
• [@jest/reporters] Notifications should be fire&forget rather than having a timeout (#​9567)
• [jest-resolve] Fix module identity preservation with symlinks and browser field resolution (#​9511)
• [jest-resolve] Do not confuse directories with files (#​8912)
• [jest-resolve] moduleNameMapper should take precedence over Node core modules (#​9563)
• [jest-runtime] Reset isolateModules if it fails (#​9541)
• [jest-runtime] Yarn PnP errors displayed to the user (#​9681)
• [jest-snapshot] Downgrade semver to v6 to support node 8 (#​9451)
• [jest-snapshot] Properly indent new snapshots in the presences of existing ones (#​9523)
• [jest-transform] Correct sourcemap behavior for transformed and instrumented code (#​9460)
• [jest-transform] Allow instrumentation of transformed files with weird file extensions (#​9589)
• [@jest/types] Make ConfigGlobals an interface to allow for declaration merging. (#​9570)
• [pretty-format] Export OldPlugin type (#​9491)

Chore & Maintenance

• [docs] Warn about unexpected behavior / bug of node-notifier when using the notify options.
• [docs] Grammatical corrections to Async docs page. (#​9679)
• [jest-resolver] Use resolve package to implement custom module resolution (#​9520)
• [jest-runtime] Move execution of setupFiles to jest-runner (#​9596)
• [jest-runtime] Update anchor link in helpers (#​9616)
• [@jest/reporters] Remove unused dependencies and type exports (#​9462)
• [website] Update pictures of reports when matchers fail (#​9214)

Performance

• [jest-haste-map] Reduce number of lstat calls in node crawler (#​9514)

v25.1.0

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Features

• [babel-plugin-jest-hoist] Show codeframe on static hoisting issues (#​8865)
• [babel-plugin-jest-hoist] Add BigInt to ALLOWED_IDENTIFIERS (#​8382)
• [babel-preset-jest] Add @babel/plugin-syntax-bigint (#​8382)
• [expect] Add BigInt support to toBeGreaterThan, toBeGreaterThanOrEqual, toBeLessThan and toBeLessThanOrEqual (#​8382)
• [expect, jest-matcher-utils] Display change counts in annotation lines (#​9035)
• [expect, jest-snapshot] Support custom inline snapshot matchers (#​9278)
• [jest-config] Throw the full error message and stack when a Jest preset is missing a dependency (#​8924)
• [jest-config] [BREAKING] Set default display name color based on runner (#​8689)
• [jest-config] Merge preset globals with project globals (#​9027)
• [jest-config] Support .cjs config files (#​9291)
• [jest-config] [BREAKING] Support .mjs config files (#​9431)
• [jest-core] Support reporters as default exports (#​9161)
• [jest-core] Support --findRelatedTests paths case insensitivity on Windows (#​8900)
• [jest-diff] Add options for colors and symbols (#​8841)
• [jest-diff] [BREAKING] Export as ECMAScript module (#​8873)
• [jest-diff] Add includeChangeCounts and rename Indicator options (#​8881)
• [jest-diff] Add changeColor and patchColor options (#​8911)
• [jest-diff] Add trailingSpaceFormatter option and replace cyan with commonColor (#​8927)
• [jest-diff] Add firstOrLastEmptyLineReplacement option and export 3 diffLines functions (#​8955)
• [jest-environment] Add optional getVmContext next to runScript (#​9252 & #​9428)
• [jest-environment-jsdom] Add fakeTimersLolex (#​8925)
• [jest-environment-node] Add fakeTimersLolex (#​8925)
• [jest-environment-node] Add queueMicrotask (#​9140)
• [jest-environment-node] Implement getVmContext (#​9252 & #​9428)
• [@jest/fake-timers] Add Lolex as implementation of fake timers (#​8897)
• [jest-get-type] Add BigInt support. (#​8382)
• [jest-matcher-utils] Add BigInt support to ensureNumbers ensureActualIsNumber, ensureExpectedIsNumber (#​8382)
• [jest-matcher-utils] Ignore highlighting matched asymmetricMatcher in diffs (#​9257)
• [jest-reporters] Export utils for path formatting (#​9162)
• [jest-reporters] Provides global coverage thresholds as watermarks for istanbul (#​9416)
• [jest-runner] Warn if a worker had to be force exited (#​8206)
• [jest-runtime] [BREAKING] Do not export ScriptTransformer - it can be imported from @jest/transform instead (#​9256)
• [jest-runtime] Use JestEnvironment.getVmContext and vm.compileFunction if available to avoid the module wrapper (#​9252 & #​9428)
• [jest-snapshot] Display change counts in annotation lines (#​8982)
• [jest-snapshot] [BREAKING] Improve report when the matcher has properties (#​9104)
• [jest-snapshot] Improve colors when snapshots are updatable (#​9132)
• [jest-snapshot] Ignore indentation for most serialized objects (#​9203)
• [jest-transform] Create createTranspilingRequire function for easy transpiling modules (#​9194)
• [jest-transform] [BREAKING] Return transformed code as a string, do not wrap in vm.Script (#​9253)
• [@jest/test-result] Create method to create empty TestResult (#​8867)
• [jest-worker] [BREAKING] Return a promise from end(), resolving with the information whether workers exited gracefully (#​8206)
• [jest-reporters] Transform file paths into hyperlinks (#​8980)

Fixes

• [expect] Display expectedDiff more carefully in toBeCloseTo (#​8389)
• [expect] Avoid incorrect difference for subset when toMatchObject fails (#​9005)
• [expect] Consider all RegExp flags for equality (#​9167)
• [expect] [BREAKING] Consider primitives different from wrappers instantiated with new (#​9167)
• [expect] Prevent maintaining RegExp state between multiple tests (#​9289)
• [expect] Fix subsetEquality false circular reference detection (#​9322)
• [jest-config] Use half of the available cores when watchAll mode is enabled (#​9117)
• [jest-config] Fix Jest multi project runner still cannot handle exactly one project (#​8894)
• [jest-console] Add missing console.group calls to NullConsole (#​9024)
• [jest-core] Don't include unref'd timers in --detectOpenHandles results (#​8941)
• [jest-core] Limit number of workers when creating haste maps in projects (#​9259)
• [jest-diff] Do not inverse format if line consists of one change (#​8903)
• [jest-diff] Rename some new options and change their default values (#​9077)
• [jest-environment-node] Fix TextEncoder.encode not referencing same global Uint8Array constructor (#​9261)
• [jest-fake-timers] getTimerCount will not include cancelled immediates (#​8764)
• [jest-fake-timers] Support util.promisify on setTimeout (#​9180)
• [jest-jasmine2, jest-circus] Improve error message format for Node's assert.fail (#​9262)
• [jest-leak-detector] [BREAKING] Use weak-napi instead of weak package (#​8686)
• [jest-mock] Fix for mockReturnValue overriding mockImplementationOnce (#​8398)
• [jest-reporters] Make node-notifier an optional dependency (#​8918)
• [jest-reporters] Make all arguments to methods on BaseReporter optional (#​9159)
• [jest-resolve]: Set MODULE_NOT_FOUND as error code when module is not resolved from paths (#​8487)
• [jest-resolve-dependencies] Handle dynamic dependencies correctly even when using module maps (#​9303)
• [jest-snapshot] Remove only the added newlines in multiline snapshots (#​8859)
• [jest-snapshot] Distinguish empty string from external snapshot not written (#​8880)
• [jest-snapshot] [BREAKING] Distinguish empty string from internal snapshot not written (#​8898)
• [jest-snapshot] [BREAKING] Remove report method and throw matcher errors (#​9049)
• [jest-snapshot] Omit irrelevant received properties when property matchers fail (#​9198)
• [jest-transform] Properly cache transformed files across tests (#​8890)
• [jest-transform] Don't fail the test suite when a generated source map is invalid (#​9058)
• [jest-types] [BREAKING] Use less null | undefined in config types (#​9200)
• [jest-util] Allow querying process.domain (#​9136)
• [pretty-format] Correctly detect memoized elements (#​9196)
• [pretty-format] Fix pretty-format to respect displayName on forwardRef (#​9422)

Chore & Maintenance

• [*] [BREAKING] Drop support for Node 6 (#​8455)
• [*] Add Node 12 to CI (#​8411)
• [*] [BREAKING] Upgrade to Micromatch v4 (#​8852)
• [babel-plugin-jest-hoist] [BREAKING] Use ESM exports (#​8874)
• [docs] Add alias and optional boolean value to coverage CLI Reference (#​8996)
• [docs] Fix broken link pointing to legacy JS file in "Snapshot Testing".
• [docs] Add setupFilesAfterEnv and jest.setTimeout example (#​8971)
• [expect] Test that toStrictEqual is equivalent to Node's assert.deepStrictEqual (#​9167)
• [jest] [BREAKING] Use ESM exports (#​8874)
• [jest-cli] [BREAKING] Use ESM exports (#​8874)
• [jest-cli] [BREAKING] Remove re-exports from @jest/core (#​8874)
• [jest-diff] Remove the need to export splitLines0 function (#​9151)
• [jest-environment-jsdom] [BREAKING] Upgrade JSDOM from v11 to v15 (#​8851)
• [jest-haste-map] Upgrade to fsevents@2 (#​9215)
• [jest-reporters] [BREAKING] Upgrade Istanbul dependencies, which are used for code coverage (#​9192)
• [jest-util] [BREAKING] Remove deprecated exports (#​8863)
• [jest-validate] [BREAKING] Use ESM exports (#​8874)
• [jest-types] Mark InitialOptions as Partial (#​8848)
• [jest-config] Refactor normalize to be more type safe (#​8848)

v25.0.0

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v24.9.0

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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 --testTimeout command line argument. (#​8456)
• [pretty-format] Render custom displayName of memoized components (#​8546)
• [jest-validate] Allow maxWorkers as part of the jest.config.js (#​8565)
• [jest-runtime] Allow passing configuration objects to transformers (#​7288)
• [@jest/core, @​jest/test-sequencer] Support async sort in custom testSequencer (#​8642)
• [jest-runtime, @​jest/fake-timers] Add jest.advanceTimersToNextTimer (#​8713)
• [@jest-transform] Extract transforming require logic within jest-core into @jest-transform (#​8756)
• [jest-matcher-utils] Add color options to matcherHint (#​8795)
• [jest-circus/jest-jasmine2] Give clearer output for Node assert errors (#​8792)
• [jest-runner] Export all types in the type signature of jest-runner (#​8825)

Fixes

• [jest-cli] Detect side-effect only imports when running --onlyChanged or --changedSince (#​8670)
• [jest-cli] Allow --maxWorkers to 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 incorrect passWithNoTests warning (#​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 to jest.requireActual (#​8482)
• [docs] Add example to jest.mock for mocking ES6 modules with the factory parameter (#​8550)
• [docs] Add information about using jest.doMock with 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] Add getVersion (moved from jest-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 WatchPlugins jestHooks.shouldRunTestSuite example 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)

Performance

• [jest-watcher] Minor optimization for JestHook (#​8746)
• [@jest/reporters] Prevent runaway CPU useage with --notify on macOS (#​8830)

v24.8.0

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Features

• [jest-circus] Bind to Circus events via an optional event handler on any custom env (#​8344)
• [expect] Improve report when matcher fails, part 15 (#​8281)
• [jest-cli] Update --forceExit and "did not exit for one second" message colors (#​8329)
• [expect] Improve report when matcher fails, part 16 (#​8306)
• [jest-runner] Pass docblock pragmas to TestEnvironment constructor (#​8320)
• [docs] Add DynamoDB guide (#​8319)
• [expect] Improve report when matcher fails, part 17 (#​8349)
• [expect] Improve report when matcher fails, part 18 (#​8356)
• [expect] Improve report when matcher fails, part 19 (#​8367)

Fixes

• [jest-each] Fix bug with placeholder values (#​8289)
• [jest-snapshot] Inline snapshots: do not indent empty lines (#​8277)
• [@jest/runtime, @​jest/transform] Allow custom transforms for JSON dependencies (#​2578)
• [jest-core] Make detectOpenHandles imply runInBand (#​8283)
• [jest-haste-map] Fix the mapper option which was incorrectly ignored (#​8299)
• [jest-jasmine2] Fix describe return value warning being shown if the describe function throws (#​8335)
• [jest-environment-jsdom] Re-declare global prototype of JSDOMEnvironment (#​8352)
• [jest-snapshot] Handle arrays when merging snapshots (#​7089)
• [expect] Extract names of async and generator functions (#​8362)
• [jest-runtime] Fix virtual mocks not being unmockable after previously being mocked (#​8396)
• [jest-transform] Replace special characters in transform cache filenames to support Windows (#​8353)
• [jest-config] Allow exactly one project (#​7498)

Chore & Maintenance

• [expect] Fix label and add opposite assertion for toEqual tests (#​8288)
• [docs] Mention Jest MongoDB Preset (#​8318)
• [@jest/reporters] Migrate away from istanbul-api (#​8294)
• [*] Delete obsolete emails tag from header comment in test files (#​8377)
• [expect] optimize compare nodes (#​8368)
• [docs] Fix typo in MockFunctionAPI.md (#​8406)
• [LICENSE] Follow copyright header guidelines and delete For Jest software (#​8428)

Performance

• [jest-runtime] Fix module registry memory leak (#​8282)
• [jest-resolve] optimize resolve module path (#​8388)
• [jest-resolve] cache current directory (#​8412)
• [jest-get-type] Simplify checking for primitive (#​8416)

---

Renovate configuration

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