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| Original file line number | Diff line number | Diff line change |
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| # Create React App [](https://travis-ci.org/facebook/create-react-app) [](https://github.com/facebook/create-react-app/pulls) | ||
| # `backpack-react-scripts` [](https://travis-ci.org/Skyscanner/backpack-react-scripts) | ||
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| Create React apps with no build configuration. | ||
| **⚠️ This is a fork of Facebook's [Create React App](https://github.com/facebook/create-react-app).** | ||
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| - [Creating an App](#creating-an-app) – How to create a new app. | ||
| - [User Guide](https://facebook.github.io/create-react-app/) – How to develop apps bootstrapped with Create React App. | ||
| Specifically, it is a fork of the [`react-scripts`](https://github.com/facebook/create-react-app/tree/master/packages/react-scripts) package. It adds Backpack component support and server-side rendering functionality (amongst other things). | ||
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| Create React App works on macOS, Windows, and Linux.<br> | ||
| If something doesn’t work, please [file an issue](https://github.com/facebook/create-react-app/issues/new). | ||
| In order to benefit from the ongoing open source development of create-react-app, this fork is kept up-to-date with the upstream repo. To aid this, we have preserved the existing repo structure, including all of the source code for the other packages that live alongside [`react-scripts`](https://github.com/facebook/create-react-app/tree/master/packages/react-scripts). **We do not modify any source code outside of [`react-scripts`](https://github.com/facebook/create-react-app/tree/master/packages/react-scripts).** | ||
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| ## Quick Overview | ||
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| ```sh | ||
| npx create-react-app my-app | ||
| cd my-app | ||
| npm start | ||
| ``` | ||
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| _([npx](https://medium.com/@maybekatz/introducing-npx-an-npm-package-runner-55f7d4bd282b) comes with npm 5.2+ and higher, see [instructions for older npm versions](https://gist.github.com/gaearon/4064d3c23a77c74a3614c498a8bb1c5f))_ | ||
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| Then open [http://localhost:3000/](http://localhost:3000/) to see your app.<br> | ||
| When you’re ready to deploy to production, create a minified bundle with `npm run build`. | ||
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| <p align='center'> | ||
| <img src='https://cdn.rawgit.com/facebook/create-react-app/27b42ac/screencast.svg' width='600' alt='npm start'> | ||
| </p> | ||
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| ### Get Started Immediately | ||
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| 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. | ||
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| Just create a project, and you’re good to go. | ||
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| ## Creating an App | ||
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| **You’ll need to have Node 8.10.0 or later on your local development machine** (but it’s not required on the server). You can use [nvm](https://github.com/creationix/nvm#installation) (macOS/Linux) or [nvm-windows](https://github.com/coreybutler/nvm-windows#node-version-manager-nvm-for-windows) to easily switch Node versions between different projects. | ||
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| To create a new app, you may choose one of the following methods: | ||
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| ### npx | ||
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| ```sh | ||
| npx create-react-app my-app | ||
| ``` | ||
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| _([npx](https://medium.com/@maybekatz/introducing-npx-an-npm-package-runner-55f7d4bd282b) comes with npm 5.2+ and higher, see [instructions for older npm versions](https://gist.github.com/gaearon/4064d3c23a77c74a3614c498a8bb1c5f))_ | ||
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| ### npm | ||
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| ```sh | ||
| npm init react-app my-app | ||
| ``` | ||
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| _`npm init <initializer>` is available in npm 6+_ | ||
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| ### Yarn | ||
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| ```sh | ||
| yarn create react-app my-app | ||
| ``` | ||
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| _`yarn create` is available in Yarn 0.25+_ | ||
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| 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: | ||
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| ``` | ||
| 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 | ||
| ``` | ||
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| No configuration or complicated folder structures, just the files you need to build your app.<br> | ||
| Once the installation is done, you can open your project folder: | ||
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| ```sh | ||
| cd my-app | ||
| ``` | ||
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| Inside the newly created project, you can run some built-in commands: | ||
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| ### `npm start` or `yarn start` | ||
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| Runs the app in development mode.<br> | ||
| Open [http://localhost:3000](http://localhost:3000) to view it in the browser. | ||
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| 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. | ||
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| <p align='center'> | ||
| <img src='https://cdn.rawgit.com/marionebl/create-react-app/9f62826/screencast-error.svg' width='600' alt='Build errors'> | ||
| </p> | ||
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| ### `npm test` or `yarn test` | ||
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| Runs the test watcher in an interactive mode.<br> | ||
| By default, runs tests related to files changed since the last commit. | ||
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| [Read more about testing.](https://facebook.github.io/create-react-app/docs/running-tests) | ||
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| ### `npm run build` or `yarn build` | ||
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| 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. | ||
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| The build is minified and the filenames include the hashes.<br> | ||
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| Your app is ready to be deployed. | ||
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| ## User Guide | ||
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| You can find detailed instructions on using Create React App and many tips in [its documentation](https://facebook.github.io/create-react-app/). | ||
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| ## How to Update to New Versions? | ||
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| Please refer to the [User Guide](https://facebook.github.io/create-react-app/docs/updating-to-new-releases) for this and other information. | ||
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| ## Philosophy | ||
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| - **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. | ||
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| - **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. | ||
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| - **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. | ||
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| ## What’s Included? | ||
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| Your environment will have everything you need to build a modern single-page React app: | ||
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| - 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](https://developers.google.com/web/fundamentals/getting-started/primers/service-workers) and a [web app manifest](https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/), meeting all the [Progressive Web App](https://facebook.github.io/create-react-app/docs/making-a-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. | ||
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| Check out [this guide](https://github.com/nitishdayal/cra_closer_look) for an overview of how these tools fit together. | ||
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| The tradeoff is that **these tools are preconfigured to work in a specific way**. If your project needs more customization, you can ["eject"](https://facebook.github.io/create-react-app/docs/available-scripts#npm-run-eject) and customize it, but then you will need to maintain this configuration. | ||
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| ## Popular Alternatives | ||
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| Create React App is a great fit for: | ||
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| - **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. | ||
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| Here are few common cases where you might want to try something else: | ||
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| - If you want to **try React** without hundreds of transitive build tool dependencies, consider [using a single HTML file or an online sandbox instead](https://reactjs.org/docs/try-react.html). | ||
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| - 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](https://github.com/insin/nwb), or [Neutrino](https://neutrino.js.org/) which are more flexible. For Rails specifically, you can use [Rails Webpacker](https://github.com/rails/webpacker). For Symfony, try [Symfony's Webpack Encore](https://symfony.com/doc/current/frontend/encore/reactjs.html). | ||
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| - If you need to **publish a React component**, [nwb](https://github.com/insin/nwb) can [also do this](https://github.com/insin/nwb#react-components-and-libraries), as well as [Neutrino's react-components preset](https://neutrino.js.org/packages/react-components/). | ||
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| - If you want to do **server rendering** with React and Node.js, check out [Next.js](https://github.com/zeit/next.js/) or [Razzle](https://github.com/jaredpalmer/razzle). Create React App is agnostic of the backend, and just produces static HTML/JS/CSS bundles. | ||
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| - If your website is **mostly static** (for example, a portfolio or a blog), consider using [Gatsby](https://www.gatsbyjs.org/) instead. Unlike Create React App, it pre-renders the website into HTML at the build time. | ||
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| - Finally, if you need **more customization**, check out [Neutrino](https://neutrino.js.org/) and its [React preset](https://neutrino.js.org/packages/react/). | ||
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| All of the above tools can work with little to no configuration. | ||
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| If you prefer configuring the build yourself, [follow this guide](https://reactjs.org/docs/add-react-to-an-existing-app.html). | ||
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| ## Contributing | ||
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| We'd love to have your helping hand on `create-react-app`! See [CONTRIBUTING.md](CONTRIBUTING.md) for more information on what we're looking for and how to get started. | ||
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| ## React Native | ||
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| Looking for something similar, but for React Native?<br> | ||
| Check out [Expo CLI](https://github.com/expo/expo-cli). | ||
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| ## Acknowledgements | ||
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| We are grateful to the authors of existing related projects for their ideas and collaboration: | ||
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| - [@eanplatter](https://github.com/eanplatter) | ||
| - [@insin](https://github.com/insin) | ||
| - [@mxstbr](https://github.com/mxstbr) | ||
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| ## License | ||
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| Create React App is open source software [licensed as MIT](https://github.com/facebook/create-react-app/blob/master/LICENSE). | ||
| Files of interest: | ||
| - [`react-scripts` README](packages/react-scripts/README.md) | ||
| - [`react-scripts` CHANGELOG](packages/react-scripts/CHANGELOG.md) | ||
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