fix: legacy no resolve asset urls

packages/vite/src/node/build.ts

@@ -50,6 +50,7 @@ import { watchPackageDataPlugin } from './packages'
 import { ensureWatchPlugin } from './plugins/ensureWatch'
 import { ESBUILD_MODULES_TARGET, VERSION } from './constants'
 import { resolveChokidarOptions } from './watch'
+import { completeSystemWrapPlugin } from './plugins/completeSystemWrap'
 
 export interface BuildOptions {
   /**
@@ -305,6 +306,7 @@ export function resolveBuildPlugins(config: ResolvedConfig): {
     commonjsOptions?.include.length !== 0
   return {
     pre: [
+      completeSystemWrapPlugin(),
       ...(options.watch ? [ensureWatchPlugin()] : []),
       watchPackageDataPlugin(config),
       ...(usePluginCommonjs ? [commonjsPlugin(options.commonjsOptions)] : []),
@@ -857,6 +859,7 @@ const relativeUrlMechanisms: Record<
     )} : ${getRelativeUrlFromDocument(relativePath)})`,
   es: (relativePath) => getResolveUrl(`'${relativePath}', import.meta.url`),
   iife: (relativePath) => getRelativeUrlFromDocument(relativePath),
+  // NOTE: make sure rollup generate `module` params
   system: (relativePath) => getResolveUrl(`'${relativePath}', module.meta.url`),
   umd: (relativePath) =>
     `(typeof document === 'undefined' && typeof location === 'undefined' ? ${getResolveUrl(

packages/vite/src/node/plugins/asset.ts

@@ -2,7 +2,13 @@ import path from 'node:path'
 import { parse as parseUrl } from 'node:url'
 import fs, { promises as fsp } from 'node:fs'
 import * as mrmime from 'mrmime'
-import type { OutputOptions, PluginContext, PreRenderedAsset } from 'rollup'
+import type {
+  NormalizedOutputOptions,
+  OutputOptions,
+  PluginContext,
+  PreRenderedAsset,
+  RenderedChunk
+} from 'rollup'
 import MagicString from 'magic-string'
 import { toOutputFilePathInString } from '../build'
 import type { Plugin } from '../plugin'
@@ -36,6 +42,76 @@ export function registerCustomMime(): void {
   mrmime.mimes['eot'] = 'application/vnd.ms-fontobject'
 }
 
+export function renderAssetUrlInJS(
+  ctx: PluginContext,
+  config: ResolvedConfig,
+  chunk: RenderedChunk,
+  opts: NormalizedOutputOptions,
+  code: string
+): MagicString | undefined {
+  let match: RegExpExecArray | null
+  let s: MagicString | undefined
+
+  // Urls added with JS using e.g.
+  // imgElement.src = "__VITE_ASSET__5aa0ddc0__" are using quotes
+
+  // Urls added in CSS that is imported in JS end up like
+  // var inlined = ".inlined{color:green;background:url(__VITE_ASSET__5aa0ddc0__)}\n";
+
+  // In both cases, the wrapping should already be fine
+
+  while ((match = assetUrlRE.exec(code))) {
+    s ||= new MagicString(code)
+    const [full, hash, postfix = ''] = match
+    // some internal plugins may still need to emit chunks (e.g. worker) so
+    // fallback to this.getFileName for that. TODO: remove, not needed
+    const file = getAssetFilename(hash, config) || ctx.getFileName(hash)
+    chunk.viteMetadata.importedAssets.add(cleanUrl(file))
+    const filename = file + postfix
+    const replacement = toOutputFilePathInString(
+      filename,
+      'asset',
+      chunk.fileName,
+      'js',
+      config,
+      opts.format
+    )
+    const replacementString =
+      typeof replacement === 'string'
+        ? JSON.stringify(replacement).slice(1, -1)
+        : `"+${replacement.runtime}+"`
+    s.overwrite(match.index, match.index + full.length, replacementString, {
+      contentOnly: true
+    })
+  }
+
+  // Replace __VITE_PUBLIC_ASSET__5aa0ddc0__ with absolute paths
+
+  const publicAssetUrlMap = publicAssetUrlCache.get(config)!
+  while ((match = publicAssetUrlRE.exec(code))) {
+    s ||= new MagicString(code)
+    const [full, hash] = match
+    const publicUrl = publicAssetUrlMap.get(hash)!.slice(1)
+    const replacement = toOutputFilePathInString(
+      publicUrl,
+      'public',
+      chunk.fileName,
+      'js',
+      config,
+      opts.format
+    )
+    const replacementString =
+      typeof replacement === 'string'
+        ? JSON.stringify(replacement).slice(1, -1)
+        : `"+${replacement.runtime}+"`
+    s.overwrite(match.index, match.index + full.length, replacementString, {
+      contentOnly: true
+    })
+  }
+
+  return s
+}
+
 /**
  * Also supports loading plain strings with import text from './foo.txt?raw'
  */
@@ -90,66 +166,8 @@ export function assetPlugin(config: ResolvedConfig): Plugin {
       return `export default ${JSON.stringify(url)}`
     },
 
-    renderChunk(code, chunk, outputOptions) {
-      let match: RegExpExecArray | null
-      let s: MagicString | undefined
-
-      // Urls added with JS using e.g.
-      // imgElement.src = "__VITE_ASSET__5aa0ddc0__" are using quotes
-
-      // Urls added in CSS that is imported in JS end up like
-      // var inlined = ".inlined{color:green;background:url(__VITE_ASSET__5aa0ddc0__)}\n";
-
-      // In both cases, the wrapping should already be fine
-
-      while ((match = assetUrlRE.exec(code))) {
-        s = s || (s = new MagicString(code))
-        const [full, hash, postfix = ''] = match
-        // some internal plugins may still need to emit chunks (e.g. worker) so
-        // fallback to this.getFileName for that. TODO: remove, not needed
-        const file = getAssetFilename(hash, config) || this.getFileName(hash)
-        chunk.viteMetadata.importedAssets.add(cleanUrl(file))
-        const filename = file + postfix
-        const replacement = toOutputFilePathInString(
-          filename,
-          'asset',
-          chunk.fileName,
-          'js',
-          config,
-          outputOptions.format
-        )
-        const replacementString =
-          typeof replacement === 'string'
-            ? JSON.stringify(replacement).slice(1, -1)
-            : `"+${replacement.runtime}+"`
-        s.overwrite(match.index, match.index + full.length, replacementString, {
-          contentOnly: true
-        })
-      }
-
-      // Replace __VITE_PUBLIC_ASSET__5aa0ddc0__ with absolute paths
-
-      const publicAssetUrlMap = publicAssetUrlCache.get(config)!
-      while ((match = publicAssetUrlRE.exec(code))) {
-        s = s || (s = new MagicString(code))
-        const [full, hash] = match
-        const publicUrl = publicAssetUrlMap.get(hash)!.slice(1)
-        const replacement = toOutputFilePathInString(
-          publicUrl,
-          'public',
-          chunk.fileName,
-          'js',
-          config,
-          outputOptions.format
-        )
-        const replacementString =
-          typeof replacement === 'string'
-            ? JSON.stringify(replacement).slice(1, -1)
-            : `"+${replacement.runtime}+"`
-        s.overwrite(match.index, match.index + full.length, replacementString, {
-          contentOnly: true
-        })
-      }
+    renderChunk(code, chunk, opts) {
+      const s = renderAssetUrlInJS(this, config, chunk, opts, code)
 
       if (s) {
         return {

packages/vite/src/node/plugins/completeSystemWrap.ts

@@ -0,0 +1,23 @@
+import type { Plugin } from '../plugin'
+
+/**
+ * make sure systemjs register wrap to had complete parameters in system format
+ */
+export function completeSystemWrapPlugin(): Plugin {
+  const SystemJSWrapRE = /System.register\(.*\((exports)\)/g
+
+  return {
+    name: 'vite:force-systemjs-wrap-complete',
+
+    renderChunk(code, chunk, opts) {
+      if (opts.format === 'system') {
+        return {
+          code: code.replace(SystemJSWrapRE, (s, s1) =>
+            s.replace(s1, 'exports, module')
+          ),
+          map: null
+        }
+      }
+    }
+  }
+}

packages/vite/src/node/plugins/css.ts

@@ -55,6 +55,7 @@ import {
   publicAssetUrlCache,
   publicAssetUrlRE,
   publicFileToBuiltUrl,
+  renderAssetUrlInJS,
   resolveAssetFileNames
 } from './asset'
 import type { ESBuildOptions } from './esbuild'
@@ -556,27 +557,34 @@ export function cssPostPlugin(config: ResolvedConfig): Plugin {
           })
           chunk.viteMetadata.importedCss.add(this.getFileName(fileHandle))
         } else if (!config.build.ssr) {
-          // legacy build and inline css
-
-          // __VITE_ASSET__ and __VITE_PUBLIC_ASSET__ urls are processed by
-          // the vite:asset plugin, don't call resolveAssetUrlsInCss here
           chunkCSS = await finalizeCss(chunkCSS, true, config)
-
+          let cssString = JSON.stringify(chunkCSS)
+          cssString =
+            renderAssetUrlInJS(
+              this,
+              config,
+              chunk,
+              opts,
+              cssString
+            )?.toString() || cssString
           const style = `__vite_style__`
           const injectCode =
             `var ${style} = document.createElement('style');` +
-            `${style}.innerHTML = ${JSON.stringify(chunkCSS)};` +
+            `${style}.innerHTML = ${cssString};` +
             `document.head.appendChild(${style});`
+          const wrapIdx = code.indexOf('System.register')
+          const insertMark = "'use strict';"
+          const insertIdx = code.indexOf(insertMark, wrapIdx)
+          const s = new MagicString(code)
+          s.appendLeft(insertIdx + insertMark.length, injectCode)
           if (config.build.sourcemap) {
-            const s = new MagicString(code)
-            s.prepend(injectCode)
             // resolve public URL from CSS paths, we need to use absolute paths
             return {
               code: s.toString(),
               map: s.generateMap({ hires: true })
             }
           } else {
-            return { code: injectCode + code }
+            return { code: s.toString() }
           }
         }
       } else {

playground/vitestSetup.ts

@@ -243,12 +243,15 @@ export async function startDefaultServe(): Promise<void> {
       watcher = rollupOutput as RollupWatcher
       await notifyRebuildComplete(watcher)
     }
-    viteTestUrl = await startStaticServer(config)
+    viteTestUrl = await startStaticServer(resolvedConfig, config)
     await page.goto(viteTestUrl)
   }
 }
 
-function startStaticServer(config?: InlineConfig): Promise<string> {
+function startStaticServer(
+  resolved: ResolvedConfig,
+  config?: InlineConfig
+): Promise<string> {
   if (!config) {
     // check if the test project has base config
     const configFile = resolve(rootDir, 'vite.config.js')
@@ -267,6 +270,10 @@ function startStaticServer(config?: InlineConfig): Promise<string> {
   if (config && config.__test__) {
     // @ts-ignore
     config.__test__()
+    // @ts-ignore
+  } else if (resolved && resolved.__test__) {
+    // @ts-ignore
+    resolved.__test__()
   }
 
   // start static file server

playground/vue-legacy/Main.vue

@@ -0,0 +1,32 @@
+<script>
+import { defineComponent, defineAsyncComponent } from 'vue'
+import css from './inline.css?inline'
+
+export default defineComponent({
+  components: {
+    module: defineAsyncComponent(() => import('./module.vue'))
+  },
+  setup() {
+    return {
+      css
+    }
+  }
+})
+</script>
+<template>
+  <div class="main">
+    <p>Main.vue</p>
+    <module />
+    <code>
+      {{ css }}
+    </code>
+  </div>
+</template>
+<style scoped>
+.main {
+  height: 100vh;
+  background: url('@/assets/asset.png') no-repeat;
+  background-size: contain;
+  background-position: center;
+}
+</style>

playground/vue-legacy/__tests__/vue-legacy.spec.ts

@@ -0,0 +1,10 @@
+import { test } from 'vitest'
+import { getBg, untilUpdated } from '~utils'
+
+test('vue legacy assets', async () => {
+  await untilUpdated(() => getBg('.main'), 'assets/asset', true)
+})
+
+test('async vue legacy assets', async () => {
+  await untilUpdated(() => getBg('.module'), 'assets/asset', true)
+})

playground/vue-legacy/env.d.ts

@@ -0,0 +1 @@
+declare module '*.png'

playground/vue-legacy/index.html

@@ -0,0 +1,7 @@
+<div id="app" style="background: 'white'"></div>
+<script type="module">
+  import { createApp } from 'vue'
+  import App from './Main.vue'
+
+  createApp(App).mount('#app')
+</script>

playground/vue-legacy/inline.css

@@ -0,0 +1,3 @@
+.inline-css {
+  color: #0088ff;
+}

playground/vue-legacy/module.vue

@@ -0,0 +1,13 @@
+<template>
+  <div class="module">
+    <p>module.vue</p>
+  </div>
+</template>
+<style scoped>
+.module {
+  height: 100vh;
+  background: url('@/assets/asset.png') no-repeat;
+  background-size: contain;
+  background-position: center;
+}
+</style>

playground/vue-legacy/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "test-vue-legacy",
+  "private": true,
+  "version": "0.0.0",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "debug": "node --inspect-brk ../../packages/vite/bin/vite",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "vue": "^3.2.37"
+  },
+  "devDependencies": {
+    "@vitejs/plugin-vue": "workspace:*",
+    "@vitejs/plugin-legacy": "workspace:*"
+  }
+}