import { enableProdMode } from '@angular/core' import { platformBrowserDynamic } from '@angular/platform-browser-dynamic' import { AppModule } from './app/app.module' import { environment } from './environments/environment' import { hmrBootstrap } from './hmr' if (environment.production) { enableProdMode() } const bootstrap = () => platformBrowserDynamic() .bootstrapModule(AppModule) if (environment.hmr) { if (module[ 'hot' ]) { hmrBootstrap(module, bootstrap) } else { console.error('HMR is not enabled for webpack-dev-server!') console.log('Are you using the --hmr flag for ng serve?') } } else { bootstrap() }