feat(vite): add vite's modulepreload polyfill (#31164)

packages/vite/src/client.ts

@@ -12,10 +12,11 @@ import { env, nodeless } from 'unenv'
 import { defineEventHandler, handleCors, setHeader } from 'h3'
 import type { ViteConfig } from '@nuxt/schema'
 import type { ViteBuildContext } from './vite'
-import { devStyleSSRPlugin } from './plugins/dev-ssr-css'
-import { runtimePathsPlugin } from './plugins/paths'
-import { typeCheckPlugin } from './plugins/type-check'
-import { viteNodePlugin } from './vite-node'
+import { DevStyleSSRPlugin } from './plugins/dev-ssr-css'
+import { RuntimePathsPlugin } from './plugins/paths'
+import { TypeCheckPlugin } from './plugins/type-check'
+import { ModulePreloadPolyfillPlugin } from './plugins/module-preload-polyfill'
+import { ViteNodePlugin } from './vite-node'
 import { createViteLogger } from './utils/logger'
 
 export async function buildClient (ctx: ViteBuildContext) {
@@ -131,14 +132,14 @@ export async function buildClient (ctx: ViteBuildContext) {
       },
     },
     plugins: [
-      devStyleSSRPlugin({
+      DevStyleSSRPlugin({
         srcDir: ctx.nuxt.options.srcDir,
         buildAssetsURL: joinURL(ctx.nuxt.options.app.baseURL, ctx.nuxt.options.app.buildAssetsDir),
       }),
-      runtimePathsPlugin({
+      RuntimePathsPlugin({
         sourcemap: !!ctx.nuxt.options.sourcemap.client,
       }),
-      viteNodePlugin(ctx),
+      ViteNodePlugin(ctx),
     ],
     appType: 'custom',
     server: {
@@ -198,9 +199,14 @@ export async function buildClient (ctx: ViteBuildContext) {
 
   // Add type checking client panel
   if (!ctx.nuxt.options.test && ctx.nuxt.options.typescript.typeCheck === true && ctx.nuxt.options.dev) {
-    clientConfig.plugins!.push(typeCheckPlugin({ sourcemap: !!ctx.nuxt.options.sourcemap.client }))
+    clientConfig.plugins!.push(TypeCheckPlugin({ sourcemap: !!ctx.nuxt.options.sourcemap.client }))
   }
 
+  clientConfig.plugins!.push(ModulePreloadPolyfillPlugin({
+    sourcemap: !!ctx.nuxt.options.sourcemap.client,
+    entry: ctx.entry,
+  }))
+
   await ctx.nuxt.callHook('vite:extendConfig', clientConfig, { isClient: true, isServer: false })
 
   clientConfig.plugins!.unshift(

packages/vite/src/plugins/dev-ssr-css.ts

@@ -7,7 +7,7 @@ interface DevStyleSSRPluginOptions {
   buildAssetsURL: string
 }
 
-export function devStyleSSRPlugin (options: DevStyleSSRPluginOptions): Plugin {
+export function DevStyleSSRPlugin (options: DevStyleSSRPluginOptions): Plugin {
   return {
     name: 'nuxt:dev-style-ssr',
     apply: 'serve',

packages/vite/src/plugins/module-preload-polyfill.ts

@@ -0,0 +1,26 @@
+import MagicString from 'magic-string'
+import type { Plugin } from 'vite'
+
+const QUERY_RE = /\?.+$/
+
+export function ModulePreloadPolyfillPlugin (options: { sourcemap: boolean, entry: string }): Plugin {
+  let isDisabled = false
+  return {
+    name: 'nuxt:module-preload-polyfill',
+    configResolved (config) {
+      isDisabled = config.build.modulePreload === false || config.build.modulePreload.polyfill === false
+    },
+    transform (code, id) {
+      if (isDisabled || id.replace(QUERY_RE, '') !== options.entry) { return }
+
+      const s = new MagicString(code)
+
+      s.prepend('import "vite/modulepreload-polyfill";\n')
+
+      return {
+        code: s.toString(),
+        map: options.sourcemap ? s.generateMap({ hires: true }) : undefined,
+      }
+    },
+  }
+}

packages/vite/src/plugins/paths.ts

@@ -10,7 +10,7 @@ interface RuntimePathsOptions {
 
 const VITE_ASSET_RE = /__VITE_ASSET__|__VITE_PUBLIC_ASSET__/
 
-export function runtimePathsPlugin (options: RuntimePathsOptions): Plugin {
+export function RuntimePathsPlugin (options: RuntimePathsOptions): Plugin {
   return {
     name: 'nuxt:runtime-paths-dep',
     enforce: 'post',

packages/vite/src/plugins/type-check.ts

@@ -3,7 +3,7 @@ import type { Plugin } from 'vite'
 
 const QUERY_RE = /\?.+$/
 
-export function typeCheckPlugin (options: { sourcemap?: boolean } = {}): Plugin {
+export function TypeCheckPlugin (options: { sourcemap?: boolean } = {}): Plugin {
   let entry: string
   return {
     name: 'nuxt:type-check',

packages/vite/src/vite-node.ts

@@ -14,7 +14,7 @@ import { isCSS } from './utils'
 
 // TODO: Remove this in favor of registerViteNodeMiddleware
 // after Nitropack or h3 allows adding middleware after setup
-export function viteNodePlugin (ctx: ViteBuildContext): VitePlugin {
+export function ViteNodePlugin (ctx: ViteBuildContext): VitePlugin {
   // Store the invalidates for the next rendering
   const invalidates = new Set<string>()