diff --git a/typescript/base/combination/combo.ts b/typescript/base/combination/combo.ts
index bec2a7b75..249e7e6f2 100644
--- a/typescript/base/combination/combo.ts
+++ b/typescript/base/combination/combo.ts
@@ -34,6 +34,7 @@ export declare class Combo extends Widget {
         adjustYOffset?: number;
         hideChecker?: Function;
         offsetStyle?: 'left' | 'right' | 'center';
+        value?:any;
         el?: any;
         popup?: any;
         comboClass?: string;
diff --git a/typescript/core/utils/tree.ts b/typescript/core/utils/tree.ts
index c300ad100..643d99cd0 100644
--- a/typescript/core/utils/tree.ts
+++ b/typescript/core/utils/tree.ts
@@ -43,8 +43,8 @@ export declare class Tree {
   postOrderTraverse(callback: Function): void;
   nrPostOrderTraverse(callback: Function): void;
   static transformToArrayFormat<T>(nodes: T | T[], pId: any, childKey?: string): T[];
-  static arrayFormat(nodes: Node | Node[], pId: any): Node[];
-  static transformToTreeFormat<T>(sNodes: T[]): Node[];
-  static treeFormat(sNodes: Node | Node[]): Node[];
-  static traversal(array: Node[], callback: Function, pNode: Node): void;
+  static arrayFormat<T>(nodes: T | T[], pId: any): T[];
+  static transformToTreeFormat<T>(sNodes: T[]): T[];
+  static treeFormat<T>(sNodes: T | T[]): T[];
+  static traversal<T>(array: T[], callback: (index:number,node:T,pNode?:T)=> boolean | void, pNode?: T): void;
 }