Fixed #1836 - For UseToast

src/components/usetoast/UseToast.d.ts

@@ -1,5 +1,3 @@
-export declare function useToast(): {
-    add(args:{ severity?: string, summary?: string, detail?: string, life?: number, closable?: boolean, group?: string }): void;
-    removeGroup(group: string): void;
-    removeAllGroups(): void;
-}
+import { ToastServiceMethods } from '../toastservice';
+
+export declare function useToast(): ToastServiceMethods;