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65 lines
1.4 KiB
Markdown
65 lines
1.4 KiB
Markdown
# Node.js function
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Discover the Node.js function preset with Nitro to attach Nuxt as a middleware to any Node.js server.
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::list
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- Compatible with many Node.js servers
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- Drop-in usage with express or native http server
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- Loads only the chunks required to render the request for optimal cold start timing
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::
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::alert{icon=IconPresets}
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Back to [presets list](/docs/deployment/presets).
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::
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## Usage
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You can use the [Nuxt config](/docs/directory-structure/nuxt.config) to explicitly set the preset to use:
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```js [nuxt.config.js|ts]
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export default {
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nitro: {
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preset: 'node'
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}
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}
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```
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Or directly use the `NITRO_PRESET` environment variable when running `nuxt build`:
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```bash
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NITRO_PRESET=node npx nuxt build
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```
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## Entry point
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When running `nuxt build` with the Node preset, the result will be an entry point exporting a function with the familiar `(req, res) => {}` signature used in [express](https://expressjs.com/), [h3](https://github.com/unjs/h3), etc.
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::alert{type=warning}
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It is not recommended to use this preset directly, and particularly not with a 3rd-party server.
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::
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## Example
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### Express middleware
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```js
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import express from 'express'
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import handler from './.output/server'
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const app = express()
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app.use(handler)
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app.listen(3000)
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```
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### Node server
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```js
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import { createServer } from 'http'
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import handler from './.output/server'
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const server = createServer(handler)
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server.listen(8080)
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```
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