babel-jest
Advanced tools
- Version published
- Maintainers
- 6
- Weekly downloads
- 22,412,106
- decreased by-2.88%
Weekly downloads
Changelog
29.5.0
Features
[jest-changed-files]Support Sapling (#13941)[jest-circus, @jest/cli, jest-config]Add feature to randomize order of tests via CLI flag or through the config file(#12922)[jest-cli, jest-config, @jest/core, jest-haste-map, @jest/reporters, jest-runner, jest-runtime, @jest/types]AddworkerThreadsconfiguration option to allow using worker threads for parallelization (#13939)[jest-cli]ExportyargsOptions(#13970)[jest-config]AddopenHandlesTimeoutoption to configure possible open handles warning. (#13875)[@jest/create-cache-key-function]Allow passinglengthargument tocreateCacheKey()function and set its default value to16on Windows (#13827)[jest-message-util]Add support for AggregateError (#13946 & #13947)[jest-message-util]Add support for Error causes intestandit(#13935 & #13966)[jest-reporters]AddsummaryThresholdoption to summary reporter to allow overriding the internal threshold that is used to print the summary of all failed tests when the number of test suites surpasses it (#13895)[jest-runtime]Expose@sinonjs/fake-timersasync APIs functionsadvanceTimersByTimeAsync(msToRun)(tickAsync(msToRun)),advanceTimersToNextTimerAsync(steps)(nextAsync),runAllTimersAsync(runAllAsync), andrunOnlyPendingTimersAsync(runToLastAsync) (#13981)[jest-runtime, @jest/transform]Allow V8 coverage provider to collect coverage from files which were not loaded explicitly (#13974)[jest-snapshot]Add support toctsandmtsTypeScript files to inline snapshots (#13975)[jest-worker]Addstartmethod to worker farms (#13937)[jest-worker]Support passing a URL as path to worker (#13982)
Fixes
[babel-plugin-jest-hoist]Fix unwanted hoisting of nestedjestusages (#13952)[jest-circus]Send test case results fortodotests (#13915)[jest-circus]Update message printed on test timeout (#13830)[jest-circus]Avoid creating the word "testfalse" whentakesDoneCallbackisfalsein the message printed on test timeout AND updated timeouts test (#13954)[jest-environment-jsdom]Stop settingdocumenttonullon teardown (#13972)[@jest/expect-utils]UpdatetoStrictEqual()to be able to checkjest.fn().mock.calls(#13960)[@jest/test-result]AllowTestResultsProcessortype to return a Promise (#13950)
Chore & Maintenance
[jest-snapshot]Remove dependency onjest-haste-map(#13977)
Readme
babel-jest
Usage
If you are already using jest-cli, add babel-jest and it will automatically compile JavaScript code using Babel.
yarn add --dev babel-jest @babel/core
If you would like to write your own preprocessor, uninstall and delete babel-jest and set the config.transform option to your preprocessor.
Setup
Note: this step is only required if you are using babel-jest with additional code preprocessors.
To explicitly define babel-jest as a transformer for your JavaScript code, map .js files to the babel-jest module. Typescript files are also supported.
"transform": {
"\\.[jt]sx?$": "babel-jest"
},
FAQs
Jest plugin to use babel for transformation.
The npm package babel-jest receives a total of 21,492,122 weekly downloads. As such, babel-jest popularity was classified as popular.
We found that babel-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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