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<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Supported Browsers and Features · Create React App</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta name="description" content="## Supported Browsers"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Supported Browsers and Features · Create React App"/><meta property="og:type" content="website"/><meta property="og:url" content="https://facebook.github.io/create-react-app/index.html"/><meta property="og:description" content="## Supported Browsers"/><meta property="og:image" content="https://facebook.github.io/create-react-app/img/logo-og.png"/><meta name="twitter:card" content="summary"/><meta name="twitter:image" content="https://facebook.github.io/create-react-app/img/logo-og.png"/><link rel="shortcut icon" href="/create-react-app/img/favicon/favicon.ico"/><link 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href="/create-react-app/docs/getting-started">Getting Started</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/folder-structure">Folder Structure</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/available-scripts">Available Scripts</a></li><li class="navListItem navListItemActive"><a class="navItem" href="/create-react-app/docs/supported-browsers-features">Supported Browsers and Features</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/updating-to-new-releases">Updating to New Releases</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Development</h3><ul><li class="navListItem"><a class="navItem" href="/create-react-app/docs/setting-up-your-editor">Editor Setup</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/developing-components-in-isolation">Developing Components in Isolation</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/analyzing-the-bundle-size">Analyzing Bundle Size</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/using-https-in-development">HTTPS in Development</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Styles and Assets</h3><ul><li class="navListItem"><a class="navItem" href="/create-react-app/docs/adding-a-stylesheet">Adding Stylesheets</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/adding-a-css-modules-stylesheet">Adding CSS Modules</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/adding-a-sass-stylesheet">Adding Sass Stylesheets</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/post-processing-css">Post-Processing CSS</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/adding-images-fonts-and-files">Adding Images, Fonts, and Files</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/using-the-public-folder">Using the Public Folder</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/code-splitting">Code Splitting</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Building your App</h3><ul><li class="navListItem"><a class="navItem" href="/create-react-app/docs/installing-a-dependency">Installing a Dependency</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/importing-a-component">Importing a Component</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/using-global-variables">Using Global Variables</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/adding-bootstrap">Adding Bootstrap</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/adding-flow">Adding Flow</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/adding-typescript">Adding TypeScript</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/adding-relay">Adding Relay</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/adding-a-router">Adding a Router</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/adding-custom-environment-variables">Environment Variables</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/making-a-progressive-web-app">Making a Progressive Web App</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/production-build">Creating a Production Build</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Testing</h3><ul><li class="navListItem"><a class="navItem" href="/create-react-app/docs/running-tests">Running Tests</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/debugging-tests">Debugging Tests</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Back-End Integration</h3><ul><li class="navListItem"><a class="navItem" href="/create-react-app/docs/proxying-api-requests-in-development">Proxying in Development</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/fetching-data-with-ajax-requests">Fetching Data</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/integrating-with-an-api-backend">Integrating with an API</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/title-and-meta-tags">Title & Meta Tags</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Deployment</h3><ul><li class="navListItem"><a class="navItem" href="/create-react-app/docs/deployment">Deployment</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Advanced Usage</h3><ul><li class="navListItem"><a class="navItem" href="/create-react-app/docs/can-i-use-decorators">Can I Use Decorators?</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/pre-rendering-into-static-html-files">Pre-Rendering Static HTML</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/advanced-configuration">Advanced Configuration</a></li><li class="navListItem"><a class="navItem" href="/create-react-app/docs/alternatives-to-ejecting">Alternatives to Ejecting</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Support</h3><ul><li class="navListItem"><a class="navItem" href="/create-react-app/docs/troubleshooting">Troubleshooting</a></li></ul></div></div></section></div><script>
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<p>By default, the generated project supports all modern browsers. Support for Internet Explorer 9, 10, and 11 requires <a href="https://github.com/facebook/create-react-app/blob/master/packages/react-app-polyfill/README.md">polyfills</a>.</p>
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<h2><a class="anchor" aria-hidden="true" id="supported-language-features"></a><a href="#supported-language-features" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Supported Language Features</h2>
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<p>This project supports a superset of the latest JavaScript standard. In addition to <a href="https://github.com/lukehoban/es6features">ES6</a> syntax features, it also supports:</p>
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<ul>
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<li><a href="https://github.com/rwaldron/exponentiation-operator">Exponentiation Operator</a> (ES2016).</li>
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<li><a href="https://github.com/tc39/ecmascript-asyncawait">Async/await</a> (ES2017).</li>
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<li><a href="https://github.com/tc39/proposal-object-rest-spread">Object Rest/Spread Properties</a> (ES2018).</li>
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<li><a href="https://github.com/tc39/proposal-dynamic-import">Dynamic import()</a> (stage 3 proposal)</li>
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<li><a href="https://github.com/tc39/proposal-class-public-fields">Class Fields and Static Properties</a> (part of stage 3 proposal).</li>
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<li><a href="https://facebook.github.io/react/docs/introducing-jsx.html">JSX</a>, <a href="./adding-flow">Flow</a> and <a href="./adding-typescript">TypeScript</a>.</li>
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</ul>
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<p>Learn more about <a href="https://babeljs.io/docs/plugins/#presets-stage-x-experimental-presets-">different proposal stages</a>.</p>
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<p>While we recommend using experimental proposals with some caution, Facebook heavily uses these features in the product code, so we intend to provide <a href="https://medium.com/@cpojer/effective-javascript-codemods-5a6686bb46fb">codemods</a> if any of these proposals change in the future.</p>
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<p>Note that <strong>this project includes no <a href="https://github.com/facebook/create-react-app/blob/master/packages/react-app-polyfill/README.md">polyfills</a></strong> by default.</p>
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<p>If you use any other ES6+ features that need <strong>runtime support</strong> (such as <code>Array.from()</code> or <code>Symbol</code>), make sure you are <a href="https://github.com/facebook/create-react-app/blob/master/packages/react-app-polyfill/README.md">including the appropriate polyfills manually</a>, or that the browsers you are targeting already support them.</p>
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