diff --git a/typescript/base/tree/ztree/asynctree.ts b/typescript/base/tree/ztree/asynctree.ts
index b0671368ee..6f33cfff64 100644
--- a/typescript/base/tree/ztree/asynctree.ts
+++ b/typescript/base/tree/ztree/asynctree.ts
@@ -3,6 +3,8 @@ import { TreeView, TreeValue } from "./treeview";
 export declare class AsyncTree extends TreeView {
     static xtype: string;
 
+    nodes: any[];
+
     _beforeExpandNode<T>(treeId: string, treeNode: T): void;
 
     _join(valueA: TreeValue, valueB: TreeValue): TreeValue;