fix(chat.d.ts): Fix typo

marker dao ® · marker dao ® · commit 5e45675a138e · 2026-04-02T12:31:52.000+02:00
diff --git a/packages/devextreme/js/ui/chat.d.ts b/packages/devextreme/js/ui/chat.d.ts
@@ -381,7 +381,7 @@ export type SendButtonProperties = {
      * @type_function_param1 e:{ui/chat:SendButtonClickEvent}
      * @public
      */
-    onClick: ((e: SendButtonClickEvent) => void);
+    onClick?: ((e: SendButtonClickEvent) => void);
 };
 
 /**
diff --git a/packages/devextreme/ts/dx.all.d.ts b/packages/devextreme/ts/dx.all.d.ts
@@ -34194,7 +34194,7 @@ declare module DevExpress.ui.dxChat {
     /**
      * [descr:SendButtonProperties.onClick]
      */
-    onClick: (e: SendButtonClickEvent) => void;
+    onClick?: (e: SendButtonClickEvent) => void;
   };
   /**
    * [descr:TextMessage]
