babel-preset-jest
Advanced tools
Changelog
25.1.0
[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 (#8961)[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)[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)[*] [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)Readme
Babel preset for all Jest plugins. This preset is automatically included when using babel-jest.
$ npm install --save-dev babel-preset-jest
babel.config.js (Recommended)module.exports = {
presets: ['jest'],
};
$ babel script.js --presets jest
require('@babel/core').transform('code', {
presets: ['jest'],
});
FAQs
> Babel preset for all Jest plugins. This preset is automatically included when using [babel-jest](https://github.com/jestjs/jest/tree/main/packages/babel-jest).
We found that babel-preset-jest demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 6 open source maintainers collaborating on the project.
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