fix: no rolldownDev on build

Author: hi-ogawa

packages/vite/src/node/config.ts

@@ -1058,9 +1058,7 @@ export async function resolveConfig(
   // run config hooks
   const userPlugins = [...prePlugins, ...normalPlugins, ...postPlugins]
   config = await runConfigHook(config, userPlugins, configEnv)
-  if (config.experimental?.rolldownDev) {
-    config = mergeConfig(config, rolldownDevHandleConfig(config))
-  }
+  config = mergeConfig(config, rolldownDevHandleConfig(config, configEnv))
 
   // Ensure default client and ssr environments
   // If there are present, ensure order { client, ssr, ...custom }

packages/vite/src/node/server/environments/rolldown.ts

@@ -10,6 +10,7 @@ import sirv from 'sirv'
 import { createLogger } from '../../publicUtils'
 import { DevEnvironment } from '../environment'
 import type {
+  ConfigEnv,
   DevEnvironmentOptions,
   HmrContext,
   ResolvedConfig,
@@ -32,7 +33,17 @@ const logger = createLogger('info', {
   allowClearScreen: false,
 })
 
-export function rolldownDevHandleConfig(config: UserConfig): UserConfig {
+export function rolldownDevHandleConfig(
+  config: UserConfig,
+  env: ConfigEnv,
+): UserConfig {
+  if (!config.experimental?.rolldownDev) {
+    return {}
+  }
+  if (env.command === 'build') {
+    delete config.experimental?.rolldownDev
+    return {}
+  }
   return {
     appType: 'custom',
     optimizeDeps: {

playground/rolldown-dev-react/package.json

@@ -3,7 +3,9 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "dev": "vite"
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
   },
   "dependencies": {
     "react": "^18.3.1",