Install missing type file

src/components/confirmationservice/ConfirmationService.d.ts

@@ -0,0 +1,14 @@
+import Vue, { PluginFunction } from 'vue';
+
+export const install: PluginFunction<{}>;
+
+interface ConfirmationServiceMethods {
+    require(options: any): any;
+    close(): void;
+}
+
+declare module 'vue/types/vue' {
+    interface Vue {
+        $confirm: ConfirmationServiceMethods;
+    }
+}