On this page
RouterPreloader
class
| npm Package | @angular/router | 
|---|---|
| Module | import { RouterPreloader } from '@angular/router'; | 
     
| Source | router/src/router_preloader.ts | 
Overview
class RouterPreloader implements OnDestroy {
  constructor(router: Router, moduleLoader: NgModuleFactoryLoader, compiler: Compiler, injector: Injector, preloadingStrategy: PreloadingStrategy)
  setUpPreloading(): void
  preload(): Observable<any>
  ngOnDestroy(): void
}
  Description
The preloader optimistically loads all router configurations to make navigations into lazily-loaded sections of the application faster.
The preloader runs in the background. When the router bootstraps, the preloader starts listening to all navigation events. After every such event, the preloader will check if any configurations can be loaded lazily.
If a route is protected by canLoad guards, the preloaded will not load it.
Constructor
constructor(router: Router, moduleLoader: NgModuleFactoryLoader, compiler: Compiler, injector: Injector, preloadingStrategy: PreloadingStrategy)
  Members
setUpPreloading(): void
  preload(): Observable<any>
  ngOnDestroy(): void
  Annotations
@Injectable()
  © 2010–2018 Google, Inc.
Licensed under the Creative Commons Attribution License 4.0.
 https://v5.angular.io/api/router/RouterPreloader