k-server/facade/src/main.ts

import { enableProdMode, ViewEncapsulation } from '@angular/core';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';

import { AppModule } from './app/app.module';
import { environment } from './environments/environment';

import { preloaderFinished } from '@delon/theme';
preloaderFinished();

import { hmrBootstrap } from './hmr';

if (environment.production) {
  enableProdMode();
}

const bootstrap = () => {
  return platformBrowserDynamic().bootstrapModule(AppModule, {
    defaultEncapsulation: ViewEncapsulation.Emulated,
  }).then((res) => {
    if ((<any>window).appBootstrap) {
      (<any>window).appBootstrap();
    }
    return res;
  });
};

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();
}