README
babel-preset-react-app
This package includes the Babel preset used by Create React App.
Please refer to its documentation:
- Getting Started – How to create a new app.
- User Guide – How to develop apps bootstrapped with Create React App.
Usage in Create React App Projects
The easiest way to use this configuration is with Create React App, which includes it by default. You don’t need to install it separately in Create React App projects.
Usage Outside of Create React App
If you want to use this Babel preset in a project not built with Create React App, you can install it with the following steps.
First, install Babel.
Then install babel-preset-react-app.
npm install babel-preset-react-app --save-dev
Then create a file named .babelrc
with following contents in the root folder of your project:
{
"presets": ["react-app"]
}
This preset uses the useBuiltIns
option with transform-object-rest-spread and transform-react-jsx, which assumes that Object.assign
is available or polyfilled.
Usage with Flow
Make sure you have a .flowconfig
file at the root directory. You can also use the flow
option on .babelrc
:
{
"presets": [["react-app", { "flow": true, "typescript": false }]]
}
Usage with TypeScript
Make sure you have a tsconfig.json
file at the root directory. You can also use the typescript
option on .babelrc
:
{
"presets": [["react-app", { "flow": false, "typescript": true }]]
}