Fixed Windows-specific bug in ignore matching

Author: thrialectics

src/core/ignore.ts

@@ -171,8 +171,11 @@ export function isIgnored(absolutePath: string): boolean {
     return false;
   }
 
+  // `ignore` expects POSIX-style separators; Windows uses `\`.
+  const normalizedPath = relativePath.replace(/\\/g, '/');
+
   try {
-    return ig.ignores(relativePath);
+    return ig.ignores(normalizedPath);
   } catch {
     return false;
   }

tests/ignore.test.ts

@@ -170,4 +170,10 @@ describe('isIgnored - edge cases', () => {
     // Should not crash on arbitrary absolute paths
     expect(() => isIgnored('/tmp/some/random/file.ts')).not.toThrow();
   });
+
+  it('should handle Windows-style path separators', () => {
+    if (process.platform !== 'win32') return;
+    const cwd = process.cwd().replace(/\//g, '\\');
+    expect(isIgnored(`${cwd}\\node_modules\\foo\\index.js`)).toBe(true);
+  });
 });