Babel preset used by Create React App

build statusprs welcome">Create React App Build StatusPRs Welcome

Create React apps with no build configuration.

  • Creating an App – How to create a new app.
  • User Guide– How to develop apps bootstrapped with Create React App.

Create React App works on macOS, Windows, and Linux. If something doesn’t work, please file an issue. If you have questions or need help, please ask in our Spectrumcommunity.

Quick Overview

npx create-react-app my-app
cd my-app
npm start

(npxcomes with npm 5.2+ and higher, see instructions for older npm versions)

Then open http://localhost:3000/to see your app. When you’re ready to deploy to production, create a minified bundle with npm run build.

npm start

Get Started Immediately

You don’tneed to install or configure tools like Webpack or Babel. They are preconfigured and hidden so that you can focus on the code.

Just create a project, and you’re good to go.

Creating an App

You’ll need to have Node 8.16.0 or Node 10.16.0 or later version on your local development machine(but it’s not required on the server). You can use nvm(macOS/Linux) or nvm-windowsto easily switch Node versions between different projects.

To create a new app, you may choose one of the following methods:


npx create-react-app my-app

(npxcomes with npm 5.2+ and higher, see instructions for older npm versions)


npm init react-app my-app

npm init <initializer>is available in npm 6+


yarn create react-app my-app

yarn createis available in Yarn 0.25+

It will create a directory called my-appinside the current folder. Inside that directory, it will generate the initial project structure and install the transitive dependencies:

├── README.md
├── node_modules
├── package.json
├── .gitignore
├── public
│   ├── favicon.ico
│   ├── index.html
│   └── manifest.json
└── src
    ├── App.css
    ├── App.js
    ├── App.test.js
    ├── index.css
    ├── index.js
    ├── logo.svg
    └── serviceWorker.js

No configuration or complicated folder structures, just the files you need to build your app. Once the installation is done, you can open your project folder:

cd my-app

Inside the newly created project, you can run some built-in commands:

npm startor yarn start

Runs the app in development mode. Open http://localhost:3000to view it in the browser.

The page will automatically reload if you make changes to the code. You will see the build errors and lint warnings in the console.

Build errors

npm testor yarn test

Runs the test watcher in an interactive mode. By default, runs tests related to files changed since the last commit.

Read more about testing.

npm run buildor yarn build

Builds the app for production to the buildfolder. It correctly bundles React in production mode and optimizes the build for the best performance.

The build is minified and the filenames include the hashes.

Your app is ready to be deployed.

User Guide

You can find detailed instructions on using Create React App and many tips in its documentation.

How to Update to New Versions?

Please refer to the User Guidefor this and other information.


  • One Dependency:There is just one build dependency. It uses Webpack, Babel, ESLint, and other amazing projects, but provides a cohesive curated experience on top of them.

  • No Configuration Required:You don't need to configure anything. A reasonably good configuration of both development and production builds is handled for you so you can focus on writing code.

  • No Lock-In:You can “eject” to a custom setup at any time. Run a single command, and all the configuration and build dependencies will be moved directly into your project, so you can pick up right where you left off.

What’s Included?

Your environment will have everything you need to build a modern single-page React app:

  • React, JSX, ES6, TypeScript and Flow syntax support.
  • Language extras beyond ES6 like the object spread operator.
  • Autoprefixed CSS, so you don’t need -webkit-or other prefixes.
  • A fast interactive unit test runner with built-in support for coverage reporting.
  • A live development server that warns about common mistakes.
  • A build script to bundle JS, CSS, and images for production, with hashes and sourcemaps.
  • An offline-first service workerand a web app manifest, meeting all the Progressive Web Appcriteria. (_Note: Using the service worker is opt-in as of react-scripts@2.0.0and higher_)
  • Hassle-free updates for the above tools with a single dependency.

Check out this guidefor an overview of how these tools fit together.

The tradeoff is that these tools are preconfigured to work in a specific way. If your project needs more customization, you can "eject"and customize it, but then you will need to maintain this configuration.

Popular Alternatives

Create React App is a great fit for:

  • Learning Reactin a comfortable and feature-rich development environment.
  • Starting new single-page React applications.
  • Creating exampleswith React for your libraries and components.

Here are a few common cases where you might want to try something else:

  • If you want to try Reactwithout hundreds of transitive build tool dependencies, consider using a single HTML file or an online sandbox instead.

  • If you need to integrate React code with a server-side template frameworklike Rails, Django or Symfony, or if you’re not building a single-page app, consider using nwb, or Neutrinowhich are more flexible. For Rails specifically, you can use Rails Webpacker. For Symfony, try Symfony's Webpack Encore.

  • If you need to publish a React component, nwbcan also do this, as well as Neutrino's react-components preset.

  • If you want to do server renderingwith React and Node.js, check out Next.jsor Razzle. Create React App is agnostic of the backend, and just produces static HTML/JS/CSS bundles.

  • If your website is mostly static(for example, a portfolio or a blog), consider using Gatsbyinstead. Unlike Create React App, it pre-renders the website into HTML at the build time.

  • Finally, if you need more customization, check out Neutrinoand its React preset.

All of the above tools can work with little to no configuration.

If you prefer configuring the build yourself, follow this guide.


We'd love to have your helping hand on create-react-app! See CONTRIBUTING.mdfor more information on what we're looking for and how to get started.

React Native

Looking for something similar, but for React Native? Check out Expo CLI.


We are grateful to the authors of existing related projects for their ideas and collaboration:


Create React App is open source software licensed as MIT.

以上是 @500tech/babel-preset-react-app 的使用教程帮助文档。

  • @500tech/babel-preset-react-app官网:官网
  • @500tech/babel-preset-react-app源码仓库:源码仓库

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