From 2bb236822030c44cfb38ca7f390fef65d3ab9629 Mon Sep 17 00:00:00 2001
From: sapphi-red <49056869+sapphi-red@users.noreply.github.com>
Date: Wed, 23 Apr 2025 20:43:40 +0900
Subject: [PATCH] fix(css): resolve relative imports in sass properly on
 Windows

---
 packages/vite/src/node/plugins/css.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/packages/vite/src/node/plugins/css.ts b/packages/vite/src/node/plugins/css.ts
index 378a2a193eb2f8..f3c4d1ec512775 100644
--- a/packages/vite/src/node/plugins/css.ts
+++ b/packages/vite/src/node/plugins/css.ts
@@ -1207,6 +1207,8 @@ export function getEmptyChunkReplacer(
     )
 }
 
+const fileURLWithWindowsDriveRE = /^file:\/\/\/[a-zA-Z]:\//
+
 interface CSSAtImportResolvers {
   css: ResolveIdFn
   sass: ResolveIdFn
@@ -1245,7 +1247,9 @@ function createCSSResolvers(config: ResolvedConfig): CSSAtImportResolvers {
             args[1] = fileURLToPath(args[1], {
               windows:
                 // file:///foo cannot be converted to path with windows mode
-                isWindows && args[1].startsWith('file:///') ? false : undefined,
+                isWindows && !fileURLWithWindowsDriveRE.test(args[1])
+                  ? false
+                  : undefined,
             })
           }
           return resolver(...args)