mirror of
https://github.com/withastro/astro.git
synced 2024-12-23 21:53:55 -05:00
125 lines
4 KiB
Markdown
125 lines
4 KiB
Markdown
# @astrojs/node 🔲
|
||
|
||
This adapter allows Astro to deploy your SSR site to Node targets.
|
||
|
||
- <strong>[Why Astro Node](#why-astro-node)</strong>
|
||
- <strong>[Installation](#installation)</strong>
|
||
- <strong>[Usage](#usage)</strong>
|
||
- <strong>[Configuration](#configuration)</strong>
|
||
- <strong>[Troubleshooting](#troubleshooting)</strong>
|
||
- <strong>[Contributing](#contributing)</strong>
|
||
- <strong>[Changelog](#changelog)</strong>
|
||
|
||
|
||
## Why Astro Node
|
||
|
||
If you're using Astro as a static site builder—its behavior out of the box—you don't need an adapter.
|
||
|
||
If you wish to [use server-side rendering (SSR)](https://docs.astro.build/en/guides/server-side-rendering/), Astro requires an adapter that matches your deployment runtime.
|
||
|
||
[Node](https://nodejs.org/en/) is a JavaScript runtime for server-side code. Frameworks like [Express](https://expressjs.com/) are built on top of it and make it easier to write server applications in Node. This adapter provides access to Node's API and creates a script to run your Astro project that can be utilized in Node applications.
|
||
|
||
## Installation
|
||
|
||
Add the Node adapter to enable SSR in your Astro project with the following `astro add` command. This will install the adapter and make the appropriate changes to your `astro.config.mjs` file in one step.
|
||
|
||
```sh
|
||
# Using NPM
|
||
npx astro add node
|
||
# Using Yarn
|
||
yarn astro add node
|
||
# Using PNPM
|
||
pnpm astro add node
|
||
```
|
||
|
||
If you prefer to install the adapter manually instead, complete the following two steps:
|
||
|
||
1. Install the Node adapter to your project’s dependencies using your preferred package manager. If you’re using npm or aren’t sure, run this in the terminal:
|
||
|
||
```bash
|
||
npm install @astrojs/node
|
||
```
|
||
|
||
1. Add two new lines to your `astro.config.mjs` project configuration file.
|
||
|
||
```js title="astro.config.mjs" ins={2, 5-6}
|
||
import { defineConfig } from 'astro/config';
|
||
import node from '@astrojs/node';
|
||
|
||
export default defineConfig({
|
||
output: 'server',
|
||
adapter: node(),
|
||
});
|
||
```
|
||
|
||
## Usage
|
||
|
||
After [performing a build](https://docs.astro.build/en/guides/deploy/#building-your-site-locally) there will be a `dist/server/entry.mjs` module that exposes a `handler` function. This works like a [middleware](https://expressjs.com/en/guide/using-middleware.html) function: it can handle incoming requests and respond accordingly.
|
||
|
||
|
||
### Using a middleware framework
|
||
You can use this `handler` with any framework that supports the Node `request` and `response` objects.
|
||
|
||
For example, with Express:
|
||
|
||
```js
|
||
import express from 'express';
|
||
import { handler as ssrHandler } from './dist/server/entry.mjs';
|
||
|
||
const app = express();
|
||
app.use(express.static('dist/client/'))
|
||
app.use(ssrHandler);
|
||
|
||
app.listen(8080);
|
||
```
|
||
|
||
|
||
### Using `http`
|
||
|
||
This output script does not require you use Express and can work with even the built-in `http` and `https` node modules. The handler does follow the convention calling an error function when either
|
||
|
||
- A route is not found for the request.
|
||
- There was an error rendering.
|
||
|
||
You can use these to implement your own 404 behavior like so:
|
||
|
||
```js
|
||
import http from 'http';
|
||
import { handler as ssrHandler } from './dist/server/entry.mjs';
|
||
|
||
http.createServer(function(req, res) {
|
||
ssrHandler(req, res, err => {
|
||
if(err) {
|
||
res.writeHead(500);
|
||
res.end(err.toString());
|
||
} else {
|
||
// Serve your static assets here maybe?
|
||
// 404?
|
||
res.writeHead(404);
|
||
res.end();
|
||
}
|
||
});
|
||
}).listen(8080);
|
||
```
|
||
|
||
|
||
|
||
## Configuration
|
||
|
||
This adapter does not expose any configuration options.
|
||
|
||
## Troubleshooting
|
||
|
||
For help, check out the `#support` channel on [Discord](https://astro.build/chat). Our friendly Support Squad members are here to help!
|
||
|
||
You can also check our [Astro Integration Documentation][astro-integration] for more on integrations.
|
||
|
||
## Contributing
|
||
|
||
This package is maintained by Astro's Core team. You're welcome to submit an issue or PR!
|
||
|
||
## Changelog
|
||
|
||
See [CHANGELOG.md](CHANGELOG.md) for a history of changes to this integration.
|
||
|
||
[astro-integration]: https://docs.astro.build/en/guides/integrations-guide/
|