История

Alex Hunt f40bb9331c Bump package versions for next major (#39764 ) Summary: #publish-packages-to-npm Bump all package versions to `0.74.0` (next major release) for `main`, following instructions at https://reactnative.dev/contributing/release-branch-cut-and-rc0#12-bump-minor-version-of-all-monorepo-packages-in-main. ```sh yarn bump-all-updated-packages --release-branch-cutoff ``` Changelog: [Internal] Pull Request resolved: https://github.com/facebook/react-native/pull/39764 Test Plan: — Reviewed By: robhogan Differential Revision: D49871039 Pulled By: huntie fbshipit-source-id: f4df6efeae4d8a9209e7aae7b9e6fea3d15793b5		2023-10-11 08:36:23 -07:00
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README.md

@react-native/babel-preset

Babel presets for React Native applications. React Native itself uses this Babel preset by default when transforming your app's source code.

If you wish to use a custom Babel configuration by writing a babel.config.js file in your project's root directory, you must specify all the plugins necessary to transform your code. React Native does not apply its default Babel configuration in this case. So, to make your life easier, you can use this preset to get the default configuration and then specify more plugins that run before it.

Usage

As mentioned above, you only need to use this preset if you are writing a custom babel.config.js file.

Installation

Install @react-native/babel-preset in your app:

with npm:

npm i @react-native/babel-preset --save-dev

or with yarn:

yarn add -D @react-native/babel-preset

Configuring Babel

Then, create a file called babel.config.js in your project's root directory. The existence of this babel.config.js file will tell React Native to use your custom Babel configuration instead of its own. Then load this preset:

{
  "presets": ["module:@react-native/babel-preset"]
}

You can further customize your Babel configuration by specifying plugins and other options. See Babel's babel.config.js documentation to learn more.

Help and Support

If you get stuck configuring Babel, please ask a question on Stack Overflow or find a consultant for help. If you discover a bug, please open up an issue.