Server plugin for vite.

Vono is a Vite plugin that minimally transforms your application to run a server on Node, Cloudflare, Netlify, and more.

Overview

Vono is a Vite plugin that makes it easy to add a server to any Vite app and deploy to a range of platforms. It can be used to add an API to an existing Vite app, or to create a server-side rendered app with Vite without the need for a separate server framework.

Usage

Install the plugin

import { defineConfig } from 'vite'
import vono from '@vonojs/vite'

export default defineConfig({
  plugins: [
    vono({
        server: "src/server.ts", // The server entry file
    })
  ]
})

Create a server

/// <reference types="@vonojs/vite/server" />
export default (request: Request) => 
    new Response("Hello world!")

Guide

Vono aims to minimally effect your Vite application. It does this by creating it's own Vite environment for the server, with the output going to dist-server by default. You can integrate Vono without making any changes to your application.

Adaptors can be used to transform the build output into something suitable for deployment on a specific platform. By default, the Node adaptor is used, which outputs a server file that can be ran standalone, or imported into another application. Other adaptors like Cloudflares' will run your server inside workerd and output a format that can be deployed via wrangler with no additional configuration.

Server entry

The server entry file is the main server entrypoint, and should export a default function that takes a Request object and an optional Context object. The function should return a Response object. Alternatively, you can export an object with a fetch method as default, satisfying the same interface.

Adaptors

Adaptors are used to transform the server output into a format suitable for deployment on a specific platform. The default is Node, which outputs a server file that can be run standalone or imported into another application.

Node

Node is the default adaptor. The server output in dist-server can be run with node dist-server/entry.js, and it exports webHandler and nodeHandler functions that can be imported into another application.

Cloudflare

1. Add the Cloudflare adaptor to your config.

import { defineConfig } from 'vite'
import { vono, CloudflareAdaptor } from '@vonojs/vono'

export default defineConfig({
  plugins: [
    vono({
        server: "src/server.ts", // The server entry file
        adaptor: new CloudflareAdaptor({}) // see @cloudflare/vite-plugin for options
    })
  ]
})

2. Add a wrangler.toml file to your project.

name = "my-project"
compatibility_date = "2025-03-28"
main = "./server/index.ts"
assets = { html_handling = "none" }

Note: If you want the worker to run on all requests, set assets.html_handling to "none". If you want Cloudflare to serve index.html statically, set it to "single-page-application"

3. Add a server/index.ts file to your project.

export default {
    async fetch(request: Request) {
        return new Response("Hello world!")
    }
}

Netlify

import { defineConfig } from 'vite'
import { vono, NetlifyAdaptor } from '@vonojs/vono'

export default defineConfig({
  plugins: [
    vono({
        server: "src/server.ts", // The server entry file
        adaptor: NetlifyAdaptor // or new NetlifyAdaptor({}) for options
    })
  ]
})

#vono/html

If you are using an html file as your Vite entry, you can access the transformed html on the server through the #vono/html virtual import. This allows you to return the transformed html as a response, possibly with some additional data like meta tags or a title.

/// <reference types="@vonojs/vite/server" />
import html from '#vono/html'

export default (request: Request) => {
    const response = new Response(html, {
        headers: {
            'Content-Type': 'text/html'
        }
    })
    return response
}

#vono/manifest

You can access the Vite manifest through the #vono/manifest virtual import. This allows you to access the transformed assets and their paths. This is useful for adding preload links or getting the hashed paths of assets.

License

Made with 💛

Published under MIT License.