1:  import { enableProdMode } from '@angular/core';

   2:  import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';

   3:   

   4:  import { AppModule } from './app/app.module';

   5:  import { environment } from './environments/environment';

   6:   

   7:  if (environment.production) {

   8:    enableProdMode();

   9:  }

  10:   

  11:  platformBrowserDynamic().bootstrapModule(AppModule)

  12:    .catch(err => console.error(err));