This is a fork of:

• https://github.com/cyco130/vavite
• https://www.npmjs.com/package/vavite

@vavite-giacomorebonato/connect

@vavite-giacomorebonato/connect is a Vite plugin for developing and building server-side Node.js applications in the form of a Connect-compatible middleware function (req, res, next). For development, the middleware is plugged into Vite's development server. For production, @vavite-giacomorebonato/connect can build a middleware, or a standalone server. You can also provide a custom server entry to be processed with Vite so that you can use Vite-specific features such as import.meta.env.

@vavite-giacomorebonato/connect does not support custom servers during development, check out the @vavite-giacomorebonato/reloader package if that's your requirement.

Installation and usage

Install vite and @vavite-giacomorebonato/connect as development dependencies (npm install --save-dev vite @vavite-giacomorebonato/connect) and add @vavite-giacomorebonato/connect to your Vite config:

import { defineConfig } from "vite";
import { vaviteConnect } from "@vavite-giacomorebonato/connect";

export default defineConfig({
  plugins: [
    vaviteConnect({
      // Options, see below
    }),
  ],
});

Then create an handler.ts (or .js) file in the root of your project that default exports a function that takes (req, res, next) and handles the request. For example:

import type { IncomingMessage, ServerResponse } from "node:http";
import type { SirvOptions } from "@vavite-giacomorebonato/connect";

export default function handler(
  req: IncomingMessage,
  res: ServerResponse,
  next: () => void,
) {
  if (req.url === "/") {
    res.setHeader("Content-Type", "text/html; charset=utf-8");
    // This is plain http.Server, not Express, so  res.send() is
    // not available, use res.write() and res.end()
    res.end("<h1>Hello, world!</h1>");
  } else {
    next();
  }
}

export const sirvOptions: SirvOptions = {
  // sirv options, optional, see below.
};

Now you can start the development server with npx vite and visit http://localhost:3000/ to see the result.

You can build a standalone application with the entry point in dist/server.js with npx vite build --ssr. The application will listen to the host and port specified in the HOST and PORT environment variables, or 0.0.0.0:3000 by default.

Options

handlerEntry: string = "/handler"

Handler entry module. The default value "/handler" will resolve to handler.js, handler.ts etc. in your project root.

serveClientAssetsInDev: boolean = false

Whether to serve client assets in development mode. Enable when developing full-stack or server-side rendering applications.

TODO: Currently HTML files are not served regardless of this setting. An option to enable it is being considered.

standalone: boolean = true

Whether to build a standalone application instead of a Connect-compatible middleware function to be used with a custom server.

clientAssetsDir: string | null = null

Directory that contains client assets to be served using the sirv package. By default it's set to null to exclude sirv from the build.

If you do provide a client assets directory, you can export sirvOptions from your handler entry to customize the options. The types for the options are exported from @vavite-giacomorebonato/connect as SirvOptions so you don't have to install sirv yourself.

bundleSirv: boolean = true

Whether sirv should be bundled with the application or simply be imported. You must install sirv as a production dependency if you set this to false.

Custom server entry

Reminder: This section applies to production build only. @vavite-giacomorebonato/connect does not support custom servers during development, check out the @vavite-giacomorebonato/reloader package for that use case.

You can provide a custom server for production with or without processing it with Vite. In this case, you will import the handler in the appropriate way (see below) and add it to your application as a middleware function. For example, in Express it would be something like app.use(handler).

For a custom server entry processed with Vite, build your application with npx vite build --ssr server.js where server.js is your custom server entry. The standalone option has no effect when using a custom server entry like this and sirv middleware will not be injected, you will have to handle serving client assets yourself.

If you don't want to process your custom server with Vite -maybe because you have an existing application with separate tooling- you should set standalone to false and import the handler from ./dist/handler.js (or whatever your build output path is).