import { enableProdMode } from '@angular/core'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { AppModule } from './app/app.module'; import { environment } from './environments/environment'; if (environment.production) { enableProdMode(); } platformBrowserDynamic().bootstrapModule(AppModule) .then(() => { if ('serviceWorker' in navigator && environment.production) { navigator.serviceWorker.register('./ngsw-worker.js'); } }) .catch(err => console.log(err));