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README.md
babel-jest
Usage
If you are already using jest-cli
, just add babel-jest
and it will
automatically compile JavaScript code using babel.
npm install --save-dev babel-jest babel-core
Note: If you are using babel version 7 you have to install
babel-jest
withnpm install --save-dev babel-jest babel-core@^7.0.0-0 @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.
"transform": {
"^.+\\.jsx?$": "babel-jest"
},