feat: add a feature option to support custom component id generator

packages/plugin-vue/README.md

@@ -58,6 +58,23 @@ export interface Options {
      * - **default:** `false`
      */
     prodHydrationMismatchDetails?: boolean
+    /**
+     * Customize the component ID generation strategy.
+     * - `'filepath'`: hash the file path (relative to the project root)
+     * - `'filepath-source'`: hash the file path and the source code
+     * - `function`: custom function that takes the file path, source code,
+     *   whether in production mode, and the default hash function as arguments
+     * - **default:** `'filepath'` in development, `'filepath-source'` in production
+     */
+    componentIdGenerator?:
+      | 'filepath'
+      | 'filepath-source'
+      | ((
+          filepath: string,
+          source: string,
+          isProduction: boolean | undefined,
+          getHash: (text: string) => string,
+        ) => string)
   }
 
   // `script`, `template` and `style` are lower-level compiler options

packages/plugin-vue/src/index.ts

@@ -138,6 +138,23 @@ export interface Options {
      * - **default:** `false`
      */
     prodHydrationMismatchDetails?: boolean
+    /**
+     * Customize the component ID generation strategy.
+     * - `'filepath'`: hash the file path (relative to the project root)
+     * - `'filepath-source'`: hash the file path and the source code
+     * - `function`: custom function that takes the file path, source code,
+     *   whether in production mode, and the default hash function as arguments
+     * - **default:** `'filepath'` in development, `'filepath-source'` in production
+     */
+    componentIdGenerator?:
+      | 'filepath'
+      | 'filepath-source'
+      | ((
+          filepath: string,
+          source: string,
+          isProduction: boolean | undefined,
+          getHash: (text: string) => string,
+        ) => string)
   }
 
   /**

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

@@ -22,7 +22,14 @@ const prevCache = new Map<string, SFCDescriptor | undefined>()
 export function createDescriptor(
   filename: string,
   source: string,
-  { root, isProduction, sourceMap, compiler, template }: ResolvedOptions,
+  {
+    root,
+    isProduction,
+    sourceMap,
+    compiler,
+    template,
+    features,
+  }: ResolvedOptions,
   hmr = false,
 ): SFCParseResult {
   const { descriptor, errors } = compiler.parse(source, {
@@ -34,7 +41,23 @@ export function createDescriptor(
   // ensure the path is normalized in a way that is consistent inside
   // project (relative to root) and on different systems.
   const normalizedPath = normalizePath(path.relative(root, filename))
-  descriptor.id = getHash(normalizedPath + (isProduction ? source : ''))
+
+  const componentIdGenerator = features?.componentIdGenerator
+  if (componentIdGenerator === 'filepath') {
+    descriptor.id = getHash(normalizedPath)
+  } else if (componentIdGenerator === 'filepath-source') {
+    descriptor.id = getHash(normalizedPath + source)
+  } else if (typeof componentIdGenerator === 'function') {
+    descriptor.id = componentIdGenerator(
+      normalizedPath,
+      source,
+      isProduction,
+      getHash,
+    )
+  } else {
+    descriptor.id = getHash(normalizedPath + (isProduction ? source : ''))
+  }
+
   ;(hmr ? hmrCache : cache).set(filename, descriptor)
   return { descriptor, errors }
 }

playground/vue-custom-id/Main.vue

@@ -0,0 +1,7 @@
+<script setup>
+import Foo from './components/Foo.vue'
+</script>
+
+<template>
+  <Foo />
+</template>

playground/vue-custom-id/__tests__/vue-custom-id.spec.ts

@@ -0,0 +1,8 @@
+import { expect, test } from 'vitest'
+import { page } from '~utils'
+
+test('should render', async () => {
+  expect(await page.innerHTML('div')).toMatch(
+    '<h1 data-v-components-foo="">Foo</h1>',
+  )
+})

playground/vue-custom-id/components/Foo.vue

@@ -0,0 +1,9 @@
+<template>
+  <h1>Foo</h1>
+</template>
+
+<style scoped>
+h1 {
+  color: red;
+}
+</style>

playground/vue-custom-id/index.html

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

playground/vue-custom-id/package.json

@@ -0,0 +1,17 @@
+{
+  "name": "@vitejs/test-vue-custom-id",
+  "private": true,
+  "version": "0.0.0",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "debug": "node --inspect-brk vite",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "vue": "catalog:"
+  },
+  "devDependencies": {
+    "@vitejs/plugin-vue": "workspace:*"
+  }
+}

playground/vue-custom-id/vite.config.ts

@@ -0,0 +1,21 @@
+import { defineConfig } from 'vite'
+import vuePlugin from '@vitejs/plugin-vue'
+
+export default defineConfig({
+  plugins: [
+    vuePlugin({
+      features: {
+        componentIdGenerator: (filename) => {
+          return filename
+            .replace(/\.\w+$/, '')
+            .replace(/[^a-z0-9]/gi, '-')
+            .toLowerCase()
+        },
+      },
+    }),
+  ],
+  build: {
+    // to make tests faster
+    minify: false,
+  },
+})