fix(plugin-vue): multiple vue files using the same src file (fix #5925,

#5447) (#5994)

packages/playground/vue/src-import/SrcImport.vue

@@ -1,3 +1,4 @@
+<style src="/@/src-import/style.css" scoped></style>
+<style src="/@/src-import/style2.css" scoped></style>
 <template src="./template.html"></template>
 <script src="./script.ts"></script>
-<style src="/@/src-import/style.css" scoped></style>

packages/playground/vue/src-import/script.ts

@@ -1,6 +1,12 @@
 import { defineComponent } from 'vue'
+import SrcImportStyle from './srcImportStyle.vue'
+import SrcImportStyle2 from './srcImportStyle2.vue'
 
 export default defineComponent({
+  components: {
+    SrcImportStyle,
+    SrcImportStyle2
+  },
   setup() {
     return {
       msg: 'hello from script src!'

packages/playground/vue/src-import/srcImportStyle.vue

@@ -0,0 +1,7 @@
+<style src="/@/src-import/style.css" scoped></style>
+<template>
+  <div class="src-imports-script">{{ msg }}</div>
+</template>
+<script setup>
+const msg = 'hello from component A!'
+</script>

packages/playground/vue/src-import/srcImportStyle2.vue

@@ -0,0 +1,4 @@
+<style src="/@/src-import/style2.css" scoped></style>
+<template>
+  <div class="src-imports-style">This should be tan</div>
+</template>

packages/playground/vue/src-import/style2.css

@@ -0,0 +1,3 @@
+.src-imports-script {
+  color: #0088ff;
+}

packages/playground/vue/src-import/template.html

@@ -1,3 +1,5 @@
 <h2>SFC Src Imports</h2>
 <div class="src-imports-script">{{ msg }}</div>
 <div class="src-imports-style">This should be tan</div>
+<SrcImportStyle></SrcImportStyle>
+<SrcImportStyle2></SrcImportStyle2>

packages/plugin-vue/src/index.ts

@@ -9,7 +9,7 @@ import {
 } from '@vue/compiler-sfc'
 import { compiler } from './compiler'
 import { parseVueRequest } from './utils/query'
-import { getDescriptor } from './utils/descriptorCache'
+import { getDescriptor, getSrcDescriptor } from './utils/descriptorCache'
 import { getResolvedScript } from './script'
 import { transformMain } from './main'
 import { handleHotUpdate } from './handleHotUpdate'
@@ -223,7 +223,10 @@ export default function vuePlugin(rawOptions: Options = {}): Plugin {
         )
       } else {
         // sub block request
-        const descriptor = getDescriptor(filename, options)!
+        const descriptor = query.src
+          ? getSrcDescriptor(filename, query)!
+          : getDescriptor(filename, options)!
+
         if (query.type === 'template') {
           return transformTemplateAsModule(code, descriptor, options, this, ssr)
         } else if (query.type === 'style') {

packages/plugin-vue/src/main.ts

@@ -6,7 +6,7 @@ import { ResolvedOptions } from '.'
 import {
   createDescriptor,
   getPrevDescriptor,
-  setDescriptor
+  setSrcDescriptor
 } from './utils/descriptorCache'
 import { PluginContext, SourceMap, TransformPluginContext } from 'rollup'
 import { normalizePath } from '@rollup/pluginutils'
@@ -237,7 +237,7 @@ async function genTemplateCode(
       await linkSrcToDescriptor(template.src, descriptor, pluginContext)
     }
     const src = template.src || descriptor.filename
-    const srcQuery = template.src ? `&src` : ``
+    const srcQuery = template.src ? `&src=${descriptor.id}` : ``
     const attrsQuery = attrsToQuery(template.attrs, 'js', true)
     const query = `?vue&type=template${srcQuery}${attrsQuery}`
     const request = JSON.stringify(src + query)
@@ -279,7 +279,7 @@ async function genScriptCode(
       const src = script.src || descriptor.filename
       const langFallback = (script.src && path.extname(src).slice(1)) || 'js'
       const attrsQuery = attrsToQuery(script.attrs, langFallback)
-      const srcQuery = script.src ? `&src` : ``
+      const srcQuery = script.src ? `&src=${descriptor.id}` : ``
       const query = `?vue&type=script${srcQuery}${attrsQuery}`
       const request = JSON.stringify(src + query)
       scriptCode =
@@ -310,7 +310,7 @@ async function genStyleCode(
       // do not include module in default query, since we use it to indicate
       // that the module needs to export the modules json
       const attrsQuery = attrsToQuery(style.attrs, 'css')
-      const srcQuery = style.src ? `&src` : ``
+      const srcQuery = style.src ? `&src=${descriptor.id}` : ``
       const directQuery = asCustomElement ? `&inline` : ``
       const query = `?vue&type=style&index=${i}${srcQuery}${directQuery}`
       const styleRequest = src + query + attrsQuery
@@ -397,7 +397,7 @@ async function linkSrcToDescriptor(
     (await pluginContext.resolve(src, descriptor.filename))?.id || src
   // #1812 if the src points to a dep file, the resolved id may contain a
   // version query.
-  setDescriptor(srcFile.replace(/\?.*$/, ''), descriptor)
+  setSrcDescriptor(srcFile.replace(/\?.*$/, ''), descriptor)
 }
 
 // these are built-in query parameters so should be ignored

packages/plugin-vue/src/utils/descriptorCache.ts

@@ -3,7 +3,7 @@ import path from 'path'
 import slash from 'slash'
 import hash from 'hash-sum'
 import { CompilerError, SFCDescriptor } from '@vue/compiler-sfc'
-import { ResolvedOptions } from '..'
+import { ResolvedOptions, VueQuery } from '..'
 import { compiler } from '../compiler'
 
 // node_modules/@vue/compiler-sfc/dist/compiler-sfc.d.ts SFCParseResult should be exported so it can be re-used
@@ -66,6 +66,15 @@ export function getDescriptor(
   }
 }
 
-export function setDescriptor(filename: string, entry: SFCDescriptor): void {
-  cache.set(filename, entry)
+export function getSrcDescriptor(
+  filename: string,
+  query: VueQuery
+): SFCDescriptor {
+  return cache.get(`${filename}?src=${query.src}`)!
+}
+
+export function setSrcDescriptor(filename: string, entry: SFCDescriptor): void {
+  // if multiple Vue files use the same src file, they will be overwritten
+  // should use other key
+  cache.set(`${filename}?src=${entry.id}`, entry)
 }

packages/plugin-vue/src/utils/query.ts

@@ -2,7 +2,7 @@ import qs from 'querystring'
 
 export interface VueQuery {
   vue?: boolean
-  src?: boolean
+  src?: string
   type?: 'script' | 'template' | 'style' | 'custom'
   index?: number
   lang?: string
@@ -18,9 +18,6 @@ export function parseVueRequest(id: string): {
   if (query.vue != null) {
     query.vue = true
   }
-  if (query.src != null) {
-    query.src = true
-  }
   if (query.index != null) {
     query.index = Number(query.index)
   }