diff --git a/typescript/index.ts b/typescript/index.ts
index dfc63d328..6d968018e 100644
--- a/typescript/index.ts
+++ b/typescript/index.ts
@@ -148,6 +148,7 @@ import { _utils } from './core/utils';
 import { Controller } from "./core/controller/controller";
 import { LayerController } from "./core/controller/controller.layer";
 import { DateCalendarPopup } from "./widget/date/calendar/popup.calendar.date";
+import { Tree, Node } from "./core/utils/tree";
 
 
 export interface BI extends _func, _i18n, _base, _inject, _var, _web, _utils {
@@ -456,4 +457,6 @@ export {
     FloatCenterLayout,
     DynamicYearMonthPopup,
     DateCalendarPopup,
+    Tree,
+    Node,
 };