fix(types)!: expose httpServer with Http2SecureServer union

packages/vite/src/node/http.ts

@@ -1,14 +1,12 @@
 import fsp from 'node:fs/promises'
 import path from 'node:path'
-import type {
-  Server as HttpServer,
-  OutgoingHttpHeaders as HttpServerHeaders,
-} from 'node:http'
+import type { OutgoingHttpHeaders as HttpServerHeaders } from 'node:http'
 import type { ServerOptions as HttpsServerOptions } from 'node:https'
 import type { Connect } from 'dep-types/connect'
 import colors from 'picocolors'
 import type { ProxyOptions } from './server/middlewares/proxy'
 import type { Logger } from './logger'
+import type { HttpServer } from './server'
 
 export interface CommonServerOptions {
   /**
@@ -115,7 +113,7 @@ export async function resolveHttpServer(
       },
       // @ts-expect-error TODO: is this correct?
       app,
-    ) as unknown as HttpServer
+    )
   }
 }
 

packages/vite/src/node/preview.ts

@@ -1,11 +1,14 @@
 import fs from 'node:fs'
 import path from 'node:path'
-import type * as http from 'node:http'
 import sirv from 'sirv'
 import connect from 'connect'
 import type { Connect } from 'dep-types/connect'
 import corsMiddleware from 'cors'
-import type { ResolvedServerOptions, ResolvedServerUrls } from './server'
+import type {
+  HttpServer,
+  ResolvedServerOptions,
+  ResolvedServerUrls,
+} from './server'
 import type { CommonServerOptions } from './http'
 import {
   httpServerStart,
@@ -67,7 +70,7 @@ export interface PreviewServer {
   /**
    * native Node http server instance
    */
-  httpServer: http.Server
+  httpServer: HttpServer
   /**
    * The resolved urls Vite prints on the CLI.
    * null before server is listening.

packages/vite/src/node/server/index.ts

@@ -3,6 +3,7 @@ import type * as net from 'node:net'
 import { get as httpGet } from 'node:http'
 import type * as http from 'node:http'
 import { performance } from 'node:perf_hooks'
+import type { Http2SecureServer } from 'node:http2'
 import connect from 'connect'
 import corsMiddleware from 'cors'
 import colors from 'picocolors'
@@ -182,6 +183,8 @@ export type ServerHook = (
   server: ViteDevServer,
 ) => (() => void) | void | Promise<(() => void) | void>
 
+export type HttpServer = http.Server | Http2SecureServer
+
 export interface ViteDevServer extends AsyncDisposable {
   /**
    * The resolved vite config object
@@ -200,7 +203,7 @@ export interface ViteDevServer extends AsyncDisposable {
    * native Node http server instance
    * will be null in middleware mode
    */
-  httpServer: http.Server | null
+  httpServer: HttpServer | null
   /**
    * chokidar watcher instance
    * https://github.com/paulmillr/chokidar#api
@@ -797,7 +800,7 @@ async function startServer(
   })
 }
 
-function createServerCloseFn(server: http.Server | null) {
+function createServerCloseFn(server: HttpServer | null) {
   if (!server) {
     return () => {}
   }

packages/vite/src/node/server/middlewares/proxy.ts

@@ -6,6 +6,7 @@ import type { HttpProxy } from 'dep-types/http-proxy'
 import colors from 'picocolors'
 import { createDebugger } from '../../utils'
 import type { CommonServerOptions, ResolvedConfig } from '../..'
+import type { HttpServer } from '..'
 
 const debug = createDebugger('vite:proxy')
 
@@ -29,7 +30,7 @@ export interface ProxyOptions extends HttpProxy.ServerOptions {
 }
 
 export function proxyMiddleware(
-  httpServer: http.Server | null,
+  httpServer: HttpServer | null,
   options: NonNullable<CommonServerOptions['proxy']>,
   config: ResolvedConfig,
 ): Connect.NextHandleFunction {

packages/vite/src/node/server/ws.ts

@@ -14,6 +14,7 @@ import type { InferCustomEventPayload } from 'types/customEvent'
 import { ASYNC_DISPOSE } from '../constants'
 import type { ResolvedConfig } from '..'
 import { isObject } from '../utils'
+import type { HttpServer } from '.'
 
 /* In Bun, the `ws` module is overridden to hook into the native code. Using the bundled `js` version
  * of `ws` will not work as Bun's req.socket does not allow reading/writing to the underlying socket.
@@ -93,7 +94,7 @@ const wsServerEvents = [
 ]
 
 export function createWebSocketServer(
-  server: Server | null,
+  server: HttpServer | null,
   config: ResolvedConfig,
   httpsOptions?: HttpsServerOptions,
 ): WebSocketServer {