babel-jest (27.5.1)
Published 2026-02-24 13:53:15 +00:00 by atheaadmin
Installation
registry=npm install babel-jest@27.5.1"babel-jest": "27.5.1"About this package
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"
},
Dependencies
Dependencies
| ID | Version |
|---|---|
| @jest/transform | ^27.5.1 |
| @jest/types | ^27.5.1 |
| @types/babel__core | ^7.1.14 |
| babel-plugin-istanbul | ^6.1.1 |
| babel-preset-jest | ^27.5.1 |
| chalk | ^4.0.0 |
| graceful-fs | ^4.2.9 |
| slash | ^3.0.0 |
Development Dependencies
| ID | Version |
|---|---|
| @babel/core | ^7.8.0 |
| @jest/test-utils | ^27.5.1 |
| @types/graceful-fs | ^4.1.3 |
Peer Dependencies
| ID | Version |
|---|---|
| @babel/core | ^7.8.0 |