chore: fix

apps/demo/src/main.ts

@@ -1,6 +1,12 @@
+import {enableProdMode} from '@angular/core';
 import {bootstrapApplication} from '@angular/platform-browser';
 
 import {AppComponent} from './app/app.component';
 import {appConfig} from './app/app.config';
+import {environment} from './environments/environment';
+
+if (environment.production) {
+    enableProdMode();
+}
 
 bootstrapApplication(AppComponent, appConfig).catch(err => console.error(err));