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Create React App Build & Test PRs Welcome

<img alt="Logo" align="right" src="https://create-react-app.dev/img/logo.svg" width="20%" />

Create React apps with no build configuration.

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

Quick Overview

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

If you've previously installed create-react-app globally via npm install -g create-react-app, we recommend you uninstall the package using npm uninstall -g create-react-app or yarn global remove create-react-app to ensure that npx always uses the latest version.

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

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

<p align='center'> <img src='https://cdn.jsdelivr.net/gh/facebook/create-react-app@27b42ac7efa018f2541153ab30d63180f5fa39e0/screencast.svg' width='600' alt='npm start'> </p>

Get Started Immediately

You don’t need to install or configure tools like webpack or Babel.<br> They are preconfigured and hidden so that you can focus on the code.

Create a project, and you’re good to go.

Creating an App

You’ll need to have Node 14.0.0 or later version on your local development machine (but it’s not required on the server). We recommend using the latest LTS version. You can use nvm (macOS/Linux) or nvm-windows to switch Node versions between different projects.

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

npx

npx create-react-app my-app

(npx is a package runner tool that comes with npm 5.2+ and higher, see instructions for older npm versions)

npm

npm init react-app my-app

npm init <initializer> is available in npm 6+

Yarn

yarn create react-app my-app

yarn create <starter-kit-package> is available in Yarn 0.25+

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

my-app
├── 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
    └── setupTests.js

No configuration or complicated folder structures, only the files you need to build your app.<br> 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 start or yarn start

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

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

<p align='center'> <img src='https://cdn.jsdelivr.net/gh/marionebl/create-react-app@9f6282671c54f0874afd37a72f6689727b562498/screencast-error.svg' width='600' alt='Build errors'> </p>

npm test or yarn test

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

Read more about testing.

npm run build or yarn build

Builds the app for production to the build folder.<br> 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.<br>

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 Guide for this and other information.

Philosophy

What’s Included?

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

Check out this guide for 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:

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

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

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

React Native

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

Contributing

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

Supporting Create React App

Create React App is a community maintained project and all contributors are volunteers. If you'd like to support the future development of Create React App then please consider donating to our Open Collective.

Credits

This project exists thanks to all the people who contribute.<br> <a href="https://github.com/facebook/create-react-app/graphs/contributors"><img src="https://opencollective.com/create-react-app/contributors.svg?width=890&button=false" /></a>

Thanks to Netlify for hosting our documentation.

Acknowledgements

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

License

Create React App is open source software licensed as MIT. The Create React App logo is licensed under a Creative Commons Attribution 4.0 International license.