1 files changed, 3 insertions, 3 deletions
diff --git a/js/file_info.ts b/js/file_info.ts
index cf9ede85c..deaafe5ea 100644
--- a/js/file_info.ts
+++ b/js/file_info.ts
@@ -83,15 +83,15 @@ export class FileInfoImpl implements FileInfo {
     this.path = path ? path : null;
   }
 
-  isFile() {
+  isFile(): boolean {
     return this._isFile;
   }
 
-  isDirectory() {
+  isDirectory(): boolean {
     return !this._isFile && !this._isSymlink;
   }
 
-  isSymlink() {
+  isSymlink(): boolean {
     return this._isSymlink;
   }
 }