You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
25 lines
825 B
25 lines
825 B
# babel-jest |
|
|
|
[Babel](https://github.com/babel/babel) [jest](https://github.com/facebook/jest) plugin |
|
|
|
## Usage |
|
|
|
If you are already using `jest-cli`, add `babel-jest` and it will automatically compile JavaScript code using Babel. |
|
|
|
```bash |
|
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](https://jestjs.io/docs/configuration#transform-object-string-string) 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. |
|
|
|
```json |
|
"transform": { |
|
"\\.[jt]sx?$": "babel-jest" |
|
}, |
|
```
|
|
|