diff --git a/typescript/core/widget.ts b/typescript/core/widget.ts
index c833f0658b..92618fe844 100644
--- a/typescript/core/widget.ts
+++ b/typescript/core/widget.ts
@@ -57,9 +57,7 @@ export interface _Widget extends _OB {
      */
     _renderEngine: RenderEngine;
 
-    _store(): any;
-
-    model: any;
+    _store(): void;
 
     // 生命周期函数
     /**