fix(vite): allow overriding client hmr options (#6082)

Co-authored-by: Pooya Parsa <pooya@pi0.io>

packages/vite/src/client.ts

@@ -2,11 +2,12 @@ import { join, resolve } from 'pathe'
 import * as vite from 'vite'
 import vuePlugin from '@vitejs/plugin-vue'
 import viteJsxPlugin from '@vitejs/plugin-vue-jsx'
-import type { Connect } from 'vite'
+import type { Connect, HmrOptions } from 'vite'
 import { logger } from '@nuxt/kit'
 import { getPort } from 'get-port-please'
 import { joinURL, withLeadingSlash, withoutLeadingSlash, withTrailingSlash } from 'ufo'
 import escapeRE from 'escape-string-regexp'
+import defu from 'defu'
 import { cacheDirPlugin } from './plugins/cache-dir'
 import { analyzePlugin } from './plugins/analyze'
 import { wpfs } from './utils/wpfs'
@@ -16,11 +17,6 @@ import { devStyleSSRPlugin } from './plugins/dev-ssr-css'
 import { viteNodePlugin } from './vite-node'
 
 export async function buildClient (ctx: ViteBuildContext) {
-  const hmrPortDefault = 24678 // Vite's default HMR port
-  const hmrPort = await getPort({
-    port: hmrPortDefault,
-    ports: Array.from({ length: 20 }, (_, i) => hmrPortDefault + 1 + i)
-  })
   const clientConfig: vite.InlineConfig = vite.mergeConfig(ctx.config, {
     experimental: {
       renderBuiltUrl: (filename, { type, hostType }) => {
@@ -66,12 +62,6 @@ export async function buildClient (ctx: ViteBuildContext) {
     ],
     appType: 'custom',
     server: {
-      hmr: {
-        // https://github.com/nuxt/framework/issues/4191
-        protocol: 'ws',
-        clientPort: hmrPort,
-        port: hmrPort
-      },
       middlewareMode: true
     }
   } as ViteOptions)
@@ -82,6 +72,19 @@ export async function buildClient (ctx: ViteBuildContext) {
     clientConfig.server.hmr = false
   }
 
+  if (clientConfig.server.hmr !== false) {
+    const hmrPortDefault = 24678 // Vite's default HMR port
+    const hmrPort = await getPort({
+      port: hmrPortDefault,
+      ports: Array.from({ length: 20 }, (_, i) => hmrPortDefault + 1 + i)
+    })
+    clientConfig.server.hmr = defu(clientConfig.server.hmr as HmrOptions, {
+      // https://github.com/nuxt/framework/issues/4191
+      protocol: 'ws',
+      port: hmrPort
+    })
+  }
+
   // Add analyze plugin if needed
   if (ctx.nuxt.options.build.analyze) {
     clientConfig.plugins.push(...analyzePlugin(ctx))

packages/vite/src/server.ts

@@ -96,7 +96,8 @@ export async function buildServer (ctx: ViteBuildContext) {
     },
     server: {
       // https://github.com/vitest-dev/vitest/issues/229#issuecomment-1002685027
-      preTransformRequests: false
+      preTransformRequests: false,
+      hmr: false
     },
     plugins: [
       cacheDirPlugin(ctx.nuxt.options.rootDir, 'server'),