fix: fix module runner sourcemap

Author: hi-ogawa

packages/vite/src/node/server/environments/rolldown.ts

@@ -267,7 +267,10 @@ class RolldownEnvironment extends DevEnvironment {
       if (this.name === 'client') {
         ctx.server.ws.send('rolldown:hmr', result)
       } else {
-        this.getRunner().evaluate(result[1].toString())
+        this.getRunner().evaluate(
+          result[1].toString(),
+          path.join(this.outDir, result[0]),
+        )
       }
       console.timeEnd(`[rolldown:${this.name}:hmr]`)
     } else {
@@ -286,7 +289,7 @@ class RolldownEnvironment extends DevEnvironment {
       const filepath = path.join(this.outDir, output.fileName)
       this.runner = new RolldownModuleRunner()
       const code = fs.readFileSync(filepath, 'utf-8')
-      this.runner.evaluate(code)
+      this.runner.evaluate(code, filepath)
     }
     return this.runner
   }
@@ -323,13 +326,12 @@ class RolldownModuleRunner {
     return mod.exports
   }
 
-  evaluate(code: string) {
+  evaluate(code: string, sourceURL: string) {
     const context = {
       self: this.context,
       ...this.context,
     }
-    // TODO: sourcemap not working?
-    // extract sourcemap
+    // extract sourcemap and move to the bottom
     const sourcemap = code.match(/^\/\/# sourceMappingURL=.*/m)?.[0] ?? ''
     if (sourcemap) {
       code = code.replace(sourcemap, '')
@@ -341,6 +343,7 @@ self.__toCommonJS = __toCommonJS;
 self.__export = __export;
 self.__toESM = __toESM;
 }}
+//# sourceURL=${sourceURL}
 //# sourceMappingSource=rolldown-module-runner
 ${sourcemap}
 `

playground/rolldown-dev-ssr/src/entry-server.tsx

@@ -7,7 +7,6 @@ const handler: Connect.SimpleHandleFunction = (req, res) => {
   const url = new URL(req.url ?? '/', 'https://vite.dev')
   console.log(`[SSR] ${req.method} ${url.pathname}`)
   if (url.pathname === '/crash-ssr') {
-    // TODO: source map and stacktrace
     throwError()
   }
   const ssrHtml = ReactDOMServer.renderToString(<App />)