Dont add "/" to path when walking windows os

Author: sheetalkamat

internal/vfs/internal/internal.go

@@ -132,7 +132,11 @@ func (vfs *Common) WalkDir(root string, walkFn fs.WalkDirFunc) error {
 		if path == "." {
 			path = ""
 		}
-		return walkFn(rootName+path, d, err)
+		walkPath := rootName + path
+		if rest, ok := strings.CutPrefix(walkPath, "/"); ok && tspath.PathIsAbsolute(rest) {
+			walkPath = rest
+		}
+		return walkFn(walkPath, d, err)
 	})
 }
 

internal/vfs/vfstest/vfstest_test.go

@@ -332,6 +332,20 @@ func TestFromMap(t *testing.T) {
 		content, ok = fs.ReadFile("/mapfile")
 		assert.Assert(t, ok)
 		assert.Equal(t, content, "hello, world")
+
+		var files []string
+		err := fs.WalkDir("/", func(path string, d vfs.DirEntry, err error) error {
+			if err != nil {
+				return err
+			}
+			if !d.IsDir() {
+				files = append(files, path)
+			}
+			return nil
+		})
+		assert.NilError(t, err)
+		slices.Sort(files)
+		assert.DeepEqual(t, files, []string{"/bytes", "/mapfile", "/string"})
 	})
 
 	t.Run("Windows", func(t *testing.T) {
@@ -356,6 +370,20 @@ func TestFromMap(t *testing.T) {
 		content, ok = fs.ReadFile("e:/mapfile")
 		assert.Assert(t, ok)
 		assert.Equal(t, content, "hello, world")
+
+		var files []string
+		err := fs.WalkDir("/", func(path string, d vfs.DirEntry, err error) error {
+			if err != nil {
+				return err
+			}
+			if !d.IsDir() {
+				files = append(files, path)
+			}
+			return nil
+		})
+		assert.NilError(t, err)
+		slices.Sort(files)
+		assert.DeepEqual(t, files, []string{"c:/string", "d:/bytes", "e:/mapfile"})
 	})
 
 	t.Run("Mixed", func(t *testing.T) {