add error handler

src/app/ErrorHandler.ts

@@ -0,0 +1,8 @@
+import {ErrorHandler as NgErrorHandler} from "@angular/core";
+
+
+export class ErrorHandler implements NgErrorHandler {
+  handleError(error: any): void {
+    console.warn(error);
+  }
+}

src/app/app.config.ts

@@ -8,6 +8,8 @@ import localeJap from "@angular/common/locales/en"
 import {provideHttpClient} from "@angular/common/http";
 import {InMemoryWebApiModule} from "angular-in-memory-web-api";
 import {HotelDataService} from "./hotel/service/HotelData.service";
+import {ErrorHandler} from "./ErrorHandler";
+import {ErrorHandler as NgErrorHandler} from "@angular/core";
 
 registerLocaleData(localeDe, 'de-DE')
 registerLocaleData(localeCn, 'cn-CN')
@@ -17,6 +19,10 @@ export const appConfig: ApplicationConfig = {
     provideZoneChangeDetection({ eventCoalescing: true }),
     provideRouter(routes),
     provideHttpClient(),
-    importProvidersFrom(InMemoryWebApiModule.forRoot(HotelDataService))
+    importProvidersFrom(InMemoryWebApiModule.forRoot(HotelDataService)),
+    {
+      provide: NgErrorHandler,
+      useClass: ErrorHandler
+    }
   ]
 };

src/app/hotel/component/edit-hotel.component.ts

@@ -106,7 +106,9 @@ export class EditHotelComponent implements OnInit {
         debounce = 0;
       }
 
-      control?.valueChanges?.pipe(debounceTime(debounce)).subscribe(() => {this.setErrorMessage(controlName, control)});
+      control?.valueChanges?.pipe(debounceTime(debounce)).subscribe(() => {
+        this.setErrorMessage(controlName, control)
+      });
     });
   }