test: update test for inline sourcemap

playground/js-sourcemap/__tests__/js-sourcemap.spec.ts

@@ -1,6 +1,7 @@
 import { URL } from 'node:url'
 import { describe, expect, test } from 'vitest'
 import { mapFileCommentRegex } from 'convert-source-map'
+import { commentSourceMap } from '../foo-with-sourcemap-plugin'
 import {
   extractSourcemap,
   findAssetFile,
@@ -36,6 +37,7 @@ if (!isBuild) {
     )
     const js = await res.text()
 
+    expect(js).toContain(commentSourceMap)
     const sourcemapComments = js.match(mapFileCommentRegex).length
     expect(sourcemapComments).toBe(1)
 
@@ -46,9 +48,6 @@ if (!isBuild) {
         "sources": [
           "",
         ],
-        "sourcesContent": [
-          null,
-        ],
         "version": 3,
       }
     `)

playground/js-sourcemap/foo-with-sourcemap-plugin.ts

@@ -0,0 +1,15 @@
+import type { Plugin } from 'vite'
+
+export const commentSourceMap =
+  '//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbIiJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiQUFBQSxNQUFNLENBQUMsS0FBSyxDQUFDLEdBQUcsQ0FBQyxDQUFDLENBQUMsQ0FBQyxHQUFHIn0='
+
+export default function transformFooWithInlineSourceMap(): Plugin {
+  return {
+    name: 'transform-foo-with-inline-sourcemap',
+    transform(code, id) {
+      if (id.includes('foo-with-sourcemap.js')) {
+        return `${code}\n${commentSourceMap}`
+      }
+    },
+  }
+}

playground/js-sourcemap/foo-with-sourcemap.js

@@ -1,5 +1,3 @@
 export const foo = 'foo'
 
 // default boundary sourcemap with magic-string
-
-//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbIiJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiQUFBQSxNQUFNLENBQUMsS0FBSyxDQUFDLEdBQUcsQ0FBQyxDQUFDLENBQUMsQ0FBQyxHQUFHIn0=

playground/js-sourcemap/vite.config.js

@@ -1,6 +1,8 @@
 import { defineConfig } from 'vite'
+import transformFooWithInlineSourceMap from './foo-with-sourcemap-plugin'
 
 export default defineConfig({
+  plugins: [transformFooWithInlineSourceMap()],
   build: {
     sourcemap: true,
     rollupOptions: {