From 3e665f6cba8473acc9e13ed6a91614bd92856275 Mon Sep 17 00:00:00 2001
From: Anthony Fu <anthonyfu117@hotmail.com>
Date: Thu, 16 Mar 2023 20:20:09 +0100
Subject: [PATCH] fix(css): inject source content conditionally (#12449)

---
 packages/vite/src/node/plugins/css.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/vite/src/node/plugins/css.ts b/packages/vite/src/node/plugins/css.ts
index a2dd0738add156..9511646956ea29 100644
--- a/packages/vite/src/node/plugins/css.ts
+++ b/packages/vite/src/node/plugins/css.ts
@@ -377,7 +377,9 @@ export function cssPostPlugin(config: ResolvedConfig): Plugin {
         const getContentWithSourcemap = async (content: string) => {
           if (config.css?.devSourcemap) {
             const sourcemap = this.getCombinedSourcemap()
-            await injectSourcesContent(sourcemap, cleanUrl(id), config.logger)
+            if (sourcemap.mappings && !sourcemap.sourcesContent) {
+              await injectSourcesContent(sourcemap, cleanUrl(id), config.logger)
+            }
             return getCodeWithSourcemap('css', content, sourcemap)
           }
           return content