Node.js

Node.js deployment is the default Nitro preset.


Node.js Server

Preset: node-server (switch to this preset)

Default Preset
This is the default nitro output preset for production builds.

Build project using nitro CLI:

nitro build

When running nitro build with the Node server preset, the result will be an entry point that launches a ready-to-run Node server. To try output:

$ node .output/server/index.mjsListening on http://localhost:3000

You can now deploy fully standalone .output directory to the hosting of your choice.

Environment Variables

You can customize server behavior using following environment variables:

  • NITRO_PORT or PORT (defaults to 3000)
  • NITRO_HOST or HOST
  • NITRO_SSL_CERT and NITRO_SSL_KEY - if both are present, this will launch the server in HTTPS mode. In the vast majority of cases, this should not be used other than for testing, and the Nitro server should be run behind a reverse proxy like nginx or Cloudflare which terminates SSL.

Cluster mode

Preset: node-cluster (switch to this preset)

For more performance and leveraging multi core handling, you can use cluser preset.

Environment Variables

In addition to node-server environment variables, you can customiize behavior:

  • NITRO_CLUSTER_WORKERS: Number of cluster workers (default is Number of available cpu cores)

Handler (advanced)

Preset: node (switch to this preset)

Nitro also has a more low-level preset that directly exports a function with (req, res) => {} signature usable for middleware and custom servers.

When running nitro build with the Node preset, the result will be an entry point exporting a function with the (req, res) => {} signature.

Example:

import { createServer } from 'node:http'import handler from './.output/server'const server = createServer(handler)server.listen(8080)