From 8e9e383cdefc4c1bc3689cfe0ab5afbe24342833 Mon Sep 17 00:00:00 2001
From: Simon Chan <1330321+yume-chan@users.noreply.github.com>
Date: Mon, 28 Aug 2023 17:43:56 +0800
Subject: [PATCH] fix: add source map to Web Workers

---
 packages/vite/src/node/plugins/worker.ts | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/packages/vite/src/node/plugins/worker.ts b/packages/vite/src/node/plugins/worker.ts
index 5c77012b02427e..06535530a6d897 100644
--- a/packages/vite/src/node/plugins/worker.ts
+++ b/packages/vite/src/node/plugins/worker.ts
@@ -274,9 +274,15 @@ export function webWorkerPlugin(config: ResolvedConfig): Plugin {
             injectEnv = module?.transformResult?.code || ''
           }
         }
-        return {
-          code: injectEnv + raw,
+        if (injectEnv) {
+          const s = new MagicString(raw)
+          s.prepend(injectEnv)
+          return {
+            code: s.toString(),
+            map: s.generateMap({ hires: 'boundary' }),
+          }
         }
+        return
       }
       if (
         query == null ||