From 2d0ff108924feec6cf21a6143d2f4acd45093faa Mon Sep 17 00:00:00 2001
From: "Xin Du (Clark)" <clark.duxin@gmail.com>
Date: Sun, 24 Jan 2021 19:16:39 +0000
Subject: [PATCH] fix(rollup): dirnames not generate a sourcemap for the
 transformation (#83)

---
 packages/nitro/src/rollup/plugins/static.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/nitro/src/rollup/plugins/static.ts b/packages/nitro/src/rollup/plugins/static.ts
index c2b138bedb..1e5079dfa7 100644
--- a/packages/nitro/src/rollup/plugins/static.ts
+++ b/packages/nitro/src/rollup/plugins/static.ts
@@ -49,7 +49,10 @@ export function dirnames (): Plugin {
   return {
     name: 'dirnames',
     renderChunk (code, chunk) {
-      return code + (chunk.isEntry ? 'global.mainDir="undefined"!=typeof __dirname?__dirname:require.main.filename;' : '')
+      return {
+        code: code + (chunk.isEntry ? 'global.mainDir="undefined"!=typeof __dirname?__dirname:require.main.filename;' : ''),
+        map: null
+      }
     }
   }
 }