In DirectorySize() filepath.Walk was replaced by ioutil.ReadDir to shorten the code.

pkg/utils/filesize.go

@@ -29,19 +29,15 @@ func ConvertFileSize(size int64) (float64, string, string) {
 }
 
 func DirectorySize(path string) (dirSz int64, err error) {
-	err = filepath.Walk(path, func(_ string, info fs.FileInfo, err error) error {
-		if err != nil {
-			return errors.Wrapf(err, "failed to compute %s directory size", path)
-		}
-
-		dirSz += info.Size()
-
-		return nil
-	})
-
+	dir, err := ioutil.ReadDir(path)
 	if err != nil {
-		return 0, err
+		return 0, errors.Wrapf(err, "failed to compute %s directory size", path)
 	}
 
+	for _, entry := range dir {
+		dirSz += entry.Size()
+	}
+
+	// Here we subtract a size of a directory's inode to get size of files only.
 	return dirSz - 4096, nil
 }