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Jan 7, 2021
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docs(jest): Clarify babel config snippet #1764

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12 changes: 10 additions & 2 deletions docs/installation/using-with-jest.md
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Expand Up @@ -52,7 +52,15 @@ Then, you need to tell Jest to transform `.js` files using `babel-jest`. You can
}
```

Then you need to create babel config using [babel.config.json](https://babeljs.io/docs/en/configuration#babelconfigjson), [.babelrc.json](https://babeljs.io/docs/en/configuration#babelrcjson) or `package.json`:
Then you need to create babel config using [babel.config.json](https://babeljs.io/docs/en/configuration#babelconfigjson) or [.babelrc.json](https://babeljs.io/docs/en/configuration#babelrcjson) config files:

```json
{
"presets": ["@babel/preset-env"]
}
```

You can also add these options to `package.json`:

```json
{
Expand All @@ -62,7 +70,7 @@ Then you need to create babel config using [babel.config.json](https://babeljs.i
}
```

### Handling webpack Aliases
### Handling webpack aliases

If you use a resolve alias in the webpack config, e.g. aliasing `@` to `/src`, you need to add a matching config for Jest as well, using the `moduleNameMapper` option:

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