diff --git a/typescript/base/single/button/node/textnode.ts b/typescript/base/single/button/node/textnode.ts
index fcf65378db..21d22aed3e 100644
--- a/typescript/base/single/button/node/textnode.ts
+++ b/typescript/base/single/button/node/textnode.ts
@@ -1,6 +1,9 @@
 import { NodeButton } from "../button.node";
 
 export declare class TextNode extends NodeButton {
+
+    static xtype: string;
+
     setText(b: string): void;
 
     getText(): string;
diff --git a/typescript/core/utils/tree.ts b/typescript/core/utils/tree.ts
index 3ae195351e..cfc773b277 100644
--- a/typescript/core/utils/tree.ts
+++ b/typescript/core/utils/tree.ts
@@ -26,7 +26,7 @@ export declare class Node {
 
 export declare class Tree {
   root: Node;
-  addNode(node: Node, newNode: Node, index: number):void;
+  addNode(node: Node, newNode: Node, index?: number):void;
   isRoot(node: Node): boolean;
   getRoot(): Node;
   clear():void;