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3d3ea9aeed
Anticipate the removal of ART from React Native core: https://github.com/facebook/react-native/issues/23313 Simplifies dependencies and builds for web apps. Close #1251
104 lines
2.4 KiB
Markdown
104 lines
2.4 KiB
Markdown
# Getting started
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This guide will help you render components and applications with React Native
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for Web.
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Your application may need to polyfill `Promise`, `Object.assign`, `Array.from`,
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and [`ResizeObserver`](https://github.com/que-etc/resize-observer-polyfill) as
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necessary for your desired browser support.
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If you're not familiar with setting up a new React web project, please follow
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the recommendations in the [React documentation](https://reactjs.org/).
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## Install
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```
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yarn add react react-dom react-native-web
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```
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## Starter kits
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[create-react-app](https://github.com/facebookincubator/create-react-app)
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includes built-in support for aliasing `react-native-web` to `react-native`.
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```
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create-react-app my-app
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```
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## Configuring a module bundler
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If you have a custom setup, you may choose to configure your module bundler to
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alias the package to `react-native`.
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For example, modify your [webpack](https://github.com/webpack/webpack)
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configuration as follows:
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```js
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// webpack.config.js
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module.exports = {
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// ...the rest of your config
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resolve: {
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alias: {
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'react-native$': 'react-native-web'
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}
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}
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}
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```
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Now you can create your components and applications with the React Native API.
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## Configuring Babel
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If you need to do the aliasing with Babel you can use
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[babel-plugin-module-resolver](https://www.npmjs.com/package/babel-plugin-module-resolver)
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```
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{
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"plugins": [
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["module-resolver", {
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"alias": {
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"^react-native$": "react-native-web"
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}
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}]
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]
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}
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```
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## Configuring Jest
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[Jest](https://facebook.github.io/jest/) can be configured using the provided
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preset. This will map `react-native` to `react-native-web` and provide
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appropriate mocks:
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```
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{
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"preset": "react-native-web"
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}
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```
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Please refer to the Jest documentation for more information.
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## Configuring Flow
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[Flow](https://flow.org) can be configured to understand the aliased module:
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```
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[options]
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module.name_mapper='^react-native$' -> 'react-native-web'
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```
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You may also need to include a custom libdef
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([example](https://gist.github.com/paularmstrong/f60b40d16fc83e1e8e532d483336f9bb))
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in your config.
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## Other notes
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### Safari flexbox performance
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Safari prior to version 10.1 can suffer from extremely [poor flexbox
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performance](https://bugs.webkit.org/show_bug.cgi?id=150445). The recommended
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way to work around this issue (as used on mobile.twitter.com) is to set
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`display:block` on Views in your element hierarchy that you know don't need
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flexbox layout.
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