enable prod mode for angular

src/app/main.ts

@@ -1,6 +1,8 @@
 import { enableProdMode } from '@angular/core';
 import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
 
+import { isDev } from '../scripts/utils';
+
 // tslint:disable-next-line
 require('../scss/styles.scss');
 // tslint:disable-next-line
@@ -8,4 +10,8 @@ require('../scripts/duo.js');
 
 import { AppModule } from './app.module';
 
+if (!isDev()) {
+    enableProdMode();
+}
+
 platformBrowserDynamic().bootstrapModule(AppModule);