diff --git a/typescript/base/single/text.ts b/typescript/base/single/text.ts
index 518eb13f7..0597021ee 100644
--- a/typescript/base/single/text.ts
+++ b/typescript/base/single/text.ts
@@ -3,6 +3,10 @@ import { Single } from "./single";
 export declare class Text extends Single {
     static xtype: string;
 
+    static addTextFormatter: (fn: (str: string) => string) => void;
+
+    static formatText: (str: string) => string;
+
     props: {
         text?: string;
         textAlign?: "left" | "center" | "right",