jest-util

Features

• breaking

  jest-each: Add primitive pretty printing for interpolated titles

• jest-runtime: Add jest.isolateModules for scoped module initialization

• breaking

  jest-diff: Support diffing numbers and booleans instead of returning null for different ones

• breaking

  jest-diff: Replace diff with diff-sequences package

• breaking

  jest-cli: Only set error process error codes when they are non-zero

• breaking

  jest-config: Deprecate setupTestFrameworkScriptFile in favor of new setupFilesAfterEnv

• breaking

  jest-worker: Add functionality to call a setup method in the worker before the first call and a teardown method when ending the farm

• breaking

  jest-config: Set default notifyMode to failure-change

• breaking

  jest-haste-map: Remove support for @providesModule

• breaking

  jest-haste-map: Replace internal data structures to improve performance

• breaking

  jest-haste-map: Use relative paths to allow remote caching

• breaking

  jest-haste-map: Remove name from hash in HasteMap.getCacheFilePath

• breaking

  babel-preset-jest: Export a function instead of an object for Babel 7 compatibility

• breaking

  jest-haste-map: Expose relative paths when getting the file iterator

• breaking

  jest-cli: Run code transforms over global{Setup,Teardown}

• jest-haste-map: Add hasteFS.getSize(path)

• jest-cli: Print version ending in -dev when running a local Jest clone

• jest-cli: Add Support for globalSetup and globalTeardown in projects

• jest-runtime: Add extraGlobals to config to load extra global variables into the execution vm

• jest-util: Export specialChars containing Unicode characters and ANSI escapes for console output

• jest-config: Handle typescript (ts and tsx) by default

• jest-validate: Add support for comments in package.json using a "//" key

• jest-config: Add shorthand for watch plugins and runners

• jest-jasmine2/jest-circus/jest-cli: Add test.todo

• pretty-format: Option to not escape strings in diff messages

• jest-haste-map: Add getFileIterator to HasteFS for faster file iteration

• jest-config: Add readConfigs function, previously in jest-cli

• jest-snapshot: Enable configurable snapshot paths

• pretty-format: Support HTMLCollection and NodeList in DOMCollection plugin

• jest-runtime: Pass the normalized configuration to script transformers

• expect: Improve report when assertion fails, part 3

• jest-runtime: If require fails without a file extension, print all files that match with one

• jest-haste-map: Make ignorePattern optional

• jest-haste-map: Add getCacheFilePath to get the path to the cache file for a HasteMap instance

• jest-runtime: Remove cacheDirectory from ignorePattern for HasteMap if not necessary

• jest-validate: Add syntax to validate multiple permitted types

• jest-config: Accept an array as as well as a string for testRegex ([#7209]#7209))

• expect/jest-matcher-utils: Improve report when assertion fails, part 4

• expect/jest-matcher-utils: Improve report when assertion fails, part 5

• expect: Check constructor equality in .toStrictEqual()

• jest-util: Add jest.getTimerCount() to get the count of scheduled fake timers

• jest-config: Add dependencyExtractor option to use a custom module to extract dependencies from files (#7313, #7349, #7350, #7362)

• jest-haste-map: Accept a getCacheKey method in hasteImplModulePath modules to reset the cache when the logic changes

• jest-config: Add haste.computeSha1 option to compute the sha-1 of the files in the haste map

• expect: expect(Infinity).toBeCloseTo(Infinity) Treats Infinity as equal in toBeCloseTo matcher

• jest-worker: Add node worker-thread support to jest-worker

• jest-config: Allow bail setting to be configured with a number allowing tests to abort after n of failures

• jest-config: Allow % based configuration of --max-workers

• jest-runner: Instantiate the test environment class with the current testPath

• jest-config: Always resolve jest-environment-jsdom from jest-config

• expect: Improve report when assertion fails, part 6

• jest-worker: Add enableWorkerThreads option to explicitly opt-in to worker_threads if available

Fixes

• expect: Accept inherited properties in toHaveProperty matcher

• jest-diff: Do not claim that -0 and 0 have no visual difference

• jest-mock: Fix automock for numeric function names

• jest-config: Ensure existsSync is only called with a string parameter

• expect: toStrictEqual considers sparseness of arrays.

• jest-cli: Fix empty coverage data for untested files

• breaking

  jest-cli: Do not use text-summary coverage reporter by default if other reporters are configured

• breaking

  jest-mock: Fix bugs with mock/spy result tracking of recursive functions

• breaking

  jest-haste-map: Recover files correctly after haste name collisions are fixed

• breaking

  pretty-format: Omit non-enumerable symbol properties

• breaking

  *: Upgrade to Babel 7, dropping support for Babel 6

• jest-cli: Avoid watch mode causing bad terminal behavior in some cases

• jest-runner/jest-worker: Fix missing console output in verbose mode

• expect: Standardize file naming in expect

• jest-each: Add empty array validation check

• jest-cli: Interrupt tests if interactive watch plugin key is pressed

• jest-each: Add each array validation check

• jest-haste-map: Do not visit again files with the same sha-1

• jest-jasmine2: Fix memory leak in Error objects hold by the framework

• jest-haste-map: Fixed Haste whitelist generation for scoped modules on Windows

• jest-mock: Fix inheritance of static properties and methods in mocks

• jest-mock: Fix mocking objects without Object.prototype in their prototype chain

• jest-mock: Check _isMockFunction is true rather than truthy on potential mocks

• jest-cli: Update jest-cli to show git ref in message when using changedSince

• [jest-jasmine2] Fix crash when test return Promise rejected with null

• jest-runtime: Check _isMockFunction is true rather than truthy on potential global mocks

• jest-jasmine: Show proper error message from async assert errors

• jest-jasmine2: Better error message when a describe block is empty

• jest-jasmine2: Pending calls inside async tests are reported as pending not failed

• jest-circus: Better error message when a describe block is empty

• jest-jasmine2: Add missing testLocationResults for xit and fit

• expect: Return false from asymmetric matchers if received value isn’t string

• jest-cli: Fix unhandled error when a bad revision is provided to changedSince

• jest-config: Moved dynamically assigned cwd from jest-cli to default configuration in jest-config

• jest-config: Fix getMaxWorkers on termux

• jest-runtime: Throw an explicit error if js is missing from moduleFileExtensions

• jest-runtime: Fix missing coverage when using negative glob pattern in testMatch

• *: Ensure maxWorkers is at least 1 (was 0 in some cases where there was only 1 CPU)

• jest-runtime: Fix transform cache invalidation when requiring a test file from multiple projects

• jest-changed-files: Return correctly the changed files when using lastCommit=true on Mercurial repositories

• babel-jest: Cache includes babel environment variables

• jest-config: Use strings instead of RegExp instances in normalized configuration

• jest-circus: Make sure to display real duration even if time is mocked

• expect: Improves the failing message for toStrictEqual matcher.

• expect: Improves the failing message for toEqual matcher.

• jest-resolve: Fix not being able to resolve path to mapped file with custom platform

• jest-message-util: Improve parsing of error messages for unusually formatted stack traces

• jest-runtime: Ensure error message text is not lost on errors with code frames

• jest-haste-map: Fix to resolve path that is start with words same as rootDir

• expect: Fix toMatchObject matcher when used with Object.create(null)

• jest-haste-map: Remove legacy condition for duplicate module detection

• jest-haste-map: Fix require detection with trailing commas and ignore import typeof modules

• jest-cli: Fix to set prettierPath via config file

• expect: Test more precisely for class instance getters

• jest-cli: Support dashed args

• jest-cli: Fix to run in band tests if watch mode enable when runInBand arg used

• jest-runtime: Fix mistake as test files when run coverage issue.

• jest-cli: Print info about passWithNoTests flag

• pretty-format: Omit unnecessary symbol filter for object keys

• jest-runtime: Fix requireActual on node_modules with mock present

• jest-resolve: Fix isBuiltinModule to support versions of node without module.builtinModules

• babel-jest: Set cwd to be resilient to it changing during the runtime of the tests

• jest-snapshot: Write and read snapshots from disk even if fs is mocked

• jest-config: Normalize config.cwd and config.rootDir using `realpath

• jest-environment-node: Fix buffer property is not ArrayBuffer issue.

• babel-plugin-jest-hoist: Ignore TS type annotations when looking for out-of-scope references

• jest-config: Add name to project if one does not exist to pick correct resolver

• jest-runtime: Pass watchPathIgnorePatterns to Haste instance

• jest-runtime: Resolve mock files via Haste when using require.resolve

Chore & Maintenance

• breaking

  *: Require Node.js 6+ for all packages

• breaking

  jest-util: Remove long-deprecated globals for fake timers

• breaking

  *: Upgrade to Micromatch 3

• breaking

  *: Remove regenerator-runtime injection

Performance

• jest-mock: Improve getType function performance.