import { enableProdMode } from '@angular/core' ; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic' ; import { NbtutorService } from '@app/services/nbtutor.service' ; import { AppModule } from './app/app.module' ; import { environment } from './environments/environment' ; if ( environment . production ) { enableProdMode ( ) ; } platformBrowserDynamic ( ) . bootstrapModule ( AppModule ) . then ( ngRef => { window [ 'Nbtutor' ] = { module : ngRef , service : ngRef . injector . get ( NbtutorService ) } ; } ) . catch ( err => console . error ( err ) ) ;