From 6bc002d73bf30989654154d9d06e0c32295c4b53 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 26 Mar 2026 09:30:58 +0000
Subject: [PATCH 1/3] Initial plan


From 1befa94ccc8842cc7ad65f89a9bb977920b96e94 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 26 Mar 2026 09:44:07 +0000
Subject: [PATCH 2/3] fix: normalize absolute Windows paths in SCSS
 @use/@import/@forward for Sass compatibility

On Windows, drive letters like C:/ in @use paths are misinterpreted as
URL schemes by Dart Sass, causing 'Can't find stylesheet to import' errors.
Extract the directory into loadPaths and rewrite to just the module name.

Co-authored-by: Simon-He95 <57086651+Simon-He95@users.noreply.github.com>
Agent-Logs-Url: https://github.com/Simon-He95/transformToTailwindcss/sessions/3d36196a-6917-47a4-88cd-ac5d5e21ffa3
---
 src/sassCompiler.ts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/sassCompiler.ts b/src/sassCompiler.ts
index ef5578b..a16bf44 100644
--- a/src/sassCompiler.ts
+++ b/src/sassCompiler.ts
@@ -184,6 +184,21 @@ export async function sassCompiler(
         }
       }
 
+      // Normalize absolute Windows paths in @use/@import/@forward directives.
+      // On Windows, drive letters like C:/ are misinterpreted as URL schemes by
+      // Sass, so we extract the directory into loadPaths and rewrite the import
+      // to just the module name.
+      const winAbsPathRegex = /@(use|import|forward)\s+(['"])([A-Za-z]:[/\\][^'"]+)\2/g
+      result = result.replace(winAbsPathRegex, (match, kw, quote, absPath) => {
+        const nativePath = absPath.replace(/\//g, path.sep)
+        const dir = path.dirname(nativePath)
+        const basename = path.basename(nativePath)
+        if (!compileOptions.loadPaths.includes(dir)) {
+          compileOptions.loadPaths.push(dir)
+        }
+        return `@${kw} ${quote}${basename}${quote}`
+      })
+
       // 优先使用新的 compile API（如果可用），否则回退到 compileString
       let compiledResult: any
 

From 79cce7d84fe2398db43b33528102d9a080120943 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 26 Mar 2026 09:51:28 +0000
Subject: [PATCH 3/3] fix: return original CSS instead of undefined on Sass
 compilation errors

Align error handling with transformToUnoCSS PR #70: when Sass compilation
fails, return the original CSS input instead of undefined so that
transformVue can still process the style block.

Co-authored-by: Simon-He95 <57086651+Simon-He95@users.noreply.github.com>
Agent-Logs-Url: https://github.com/Simon-He95/transformToTailwindcss/sessions/8c2955bd-691e-4e84-b24b-e78cc31b49ad
---
 src/sassCompiler.ts       | 2 +-
 test/sassCompiler.test.ts | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/sassCompiler.ts b/src/sassCompiler.ts
index a16bf44..baee1b4 100644
--- a/src/sassCompiler.ts
+++ b/src/sassCompiler.ts
@@ -264,6 +264,6 @@ export async function sassCompiler(
     console.error(
       `Error:\n transform-to-unocss(sassCompiler) ${error.toString()}`,
     )
-    return undefined
+    return css
   }
 }
diff --git a/test/sassCompiler.test.ts b/test/sassCompiler.test.ts
index 19926f7..113fc7f 100644
--- a/test/sassCompiler.test.ts
+++ b/test/sassCompiler.test.ts
@@ -261,8 +261,8 @@ describe('sassCompiler', () => {
       undefined,
       true,
     )
-    // Should not throw, but return undefined and log error
-    expect(result).toBeUndefined()
+    // Should not throw, but return the original CSS and log error
+    expect(result).toBe(css)
   })
 })