We maintain this fork to enhance/override/customize CRA to our needs. So far, the scope of our changes only affects the react-scripts
package.
- Support for multiple entrypoints and generation of individual HTML entries for each one of them using the
ENTRIES
env variable. - Stable static output file names based on entrypoints names instead of contenhash based file names.
- Support for react-hot-loader.
- Complete removal of ESLint.
- Only execute test files matching the
'<rootDir>/src/**/__tests__/**/*.test.{js,jsx,ts,tsx}'
RegEx.
To check your changes work locally, you can use the yarn add --dev file:path/to/your/custom/react-scripts
command in another repository.
This repository works with two remotes:
origin
, pointing to our fork at Spendesk/create-react-appupstream
, pointing to the original source repository at facebook/create-react-app
To get latest updates from the source and re-apply our changes on top:
git fetch upstream
git checkout -b ${version} ${latest-tag}
(where${latest-tag}
is the latest published tag on the source repository and${version}
is the version number of this tag, for ex. if the latest tag isv3.4.1
, the command should begit checkout -b 3.4.1 v3.4.1
)- Apply the changes (most likely, you would use
git cherry-pick
to apply previous commits) git push -u
to push your branch
The forked version is published to our npm org.
We suffix our altered versions with -custom
(or custom-2
, custom-3
if we have multiple patched versions published on top of the same original source version).
Normally, we only alter the react-scripts
package, which means we should only need to publish this package and not the others.
The original CRA repository uses Yarn worskpaces and Lerna, but this gets on our way when we only want to try to publish one or two packages. So the simplest way to do it is to commit and push your changes, then cd
into the react-scripts
package and run npm publish
there (you'll need first to have npm login
, you'll find the credentials in our 1Password).
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 Spectrum community.
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
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.
When you’re ready to deploy to production, create a minified bundle with npm run build
.
You don’t need to install or configure tools like webpack or Babel.
They are preconfigured and hidden so that you can focus on the code.
Create a project, and you’re good to go.
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-windows to 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
(npx is a package runner tool that comes 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 create <starter-kit-package>
is available in Yarn 0.25+
It will create a directory called my-app
inside the current folder.
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
No configuration or complicated folder structures, only 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:
Runs the app in development mode.
Open http://localhost:3000 to 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.
Runs the test watcher in an interactive mode.
By default, runs tests related to files changed since the last commit.
Builds the app for production to the build
folder.
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.
You can find detailed instructions on using Create React App and many tips in its documentation.
Please refer to the User Guide for this and other information.
-
One Dependency: There is only 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.
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 worker and a web app manifest, meeting all the Progressive Web App criteria. (Note: Using the service worker is opt-in as of
[email protected]
and higher) - Hassle-free updates for the above tools with a single dependency.
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.
Create React App is a great fit for:
- Learning React in a comfortable and feature-rich development environment.
- Starting new single-page React applications.
- Creating examples with 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 React without 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 framework like Rails, Django or Symfony, or if you’re not building a single-page app, consider using nwb, or Neutrino which 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, nwb can also do this, as well as Neutrino's react-components preset.
-
If you want to do server rendering with React and Node.js, check out Next.js or Razzle. Create React App is agnostic of the backend, and only produces static HTML/JS/CSS bundles.
-
If your website is mostly static (for example, a portfolio or a blog), consider using Gatsby instead. Unlike Create React App, it pre-renders the website into HTML at the build time.
-
Finally, if you need more customization, check out Neutrino and 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.
Looking for something similar, but for React Native?
Check out Expo CLI.
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.
This project exists thanks to all the people who contribute.
Thanks to Netlify for hosting our documentation.
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.