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115 lines
3.5 KiB
Markdown
115 lines
3.5 KiB
Markdown
# @astrojs/react ⚛️
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This **[Astro integration][astro-integration]** enables server-side rendering and client-side hydration for your [React](https://react.dev/) components.
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## Installation
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There are two ways to add integrations to your project. Let's try the most convenient option first!
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### `astro add` command
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Astro includes a CLI tool for adding first party integrations: `astro add`. This command will:
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1. (Optionally) Install all necessary dependencies and peer dependencies
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2. (Also optionally) Update your `astro.config.*` file to apply this integration
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To install `@astrojs/react`, run the following from your project directory and follow the prompts:
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```sh
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# Using NPM
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npx astro add react
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# Using Yarn
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yarn astro add react
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# Using PNPM
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pnpm astro add react
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```
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If you run into any issues, [feel free to report them to us on GitHub](https://github.com/withastro/astro/issues) and try the manual installation steps below.
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### Install dependencies manually
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First, install the `@astrojs/react` integration like so:
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```sh
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npm install @astrojs/react
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```
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Most package managers will install associated peer dependencies as well. Still, if you see a "Cannot find package 'react'" (or similar) warning when you start up Astro, you'll need to install `react` and `react-dom`:
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```sh
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npm install react react-dom
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```
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Now, apply this integration to your `astro.config.*` file using the `integrations` property:
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```js ins={3} "react()"
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// astro.config.mjs
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import { defineConfig } from 'astro/config';
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import react from '@astrojs/react';
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export default defineConfig({
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// ...
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integrations: [react()],
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});
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```
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## Getting started
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To use your first React component in Astro, head to our [UI framework documentation][astro-ui-frameworks]. You'll explore:
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- 📦 how framework components are loaded,
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- 💧 client-side hydration options, and
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- 🤝 opportunities to mix and nest frameworks together
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## Options
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### Children parsing
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Children passed into a React component from an Astro component are parsed as plain strings, not React nodes.
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For example, the `<ReactComponent />` below will only receive a single child element:
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```astro
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---
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import ReactComponent from './ReactComponent';
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---
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<ReactComponent>
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<div>one</div>
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<div>two</div>
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</ReactComponent>
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```
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If you are using a library that _expects_ more than one child element element to be passed, for example so that it can slot certain elements in different places, you might find this to be a blocker.
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You can set the experimental flag `experimentalReactChildren` to tell Astro to always pass children to React as React vnodes. There is some runtime cost to this, but it can help with compatibility.
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You can enable this option in the configuration for the React integration:
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```js
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// astro.config.mjs
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import { defineConfig } from 'astro/config';
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import react from '@astrojs/react';
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export default defineConfig({
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// ...
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integrations: [
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react({
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experimentalReactChildren: true,
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}),
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],
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});
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```
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## Troubleshooting
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For help, check out the `#support` channel on [Discord](https://astro.build/chat). Our friendly Support Squad members are here to help!
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You can also check our [Astro Integration Documentation][astro-integration] for more on integrations.
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## Contributing
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This package is maintained by Astro's Core team. You're welcome to submit an issue or PR!
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[astro-integration]: https://docs.astro.build/en/guides/integrations-guide/
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[astro-ui-frameworks]: https://docs.astro.build/en/core-concepts/framework-components/#using-framework-components
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