Sengi-Windows-MacOS-Linux/src/main.ts

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));