import '@angular/compiler'; import { ApplicationRef, enableProdMode } from '@angular/core'; import { enableDebugTools } from '@angular/platform-browser'; 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((moduleRef) => { const applicationRef = moduleRef.injector.get(ApplicationRef); const componentRef = applicationRef.components[0]; // allows to run `ng.profiler.timeChangeDetection();` enableDebugTools(componentRef); }) .catch((err) => console.log(err));