client/src/app/core/routing/preload-selected-modules-list.ts

   1 import { Route, PreloadingStrategy } from '@angular/router'
   2 import { Observable } from 'rxjs/Observable'
   3 import 'rxjs/add/observable/timer'
   4 import 'rxjs/add/operator/switchMap'
   5
   6 export class PreloadSelectedModulesList implements PreloadingStrategy {
   7   preload (route: Route, load: Function): Observable<any> {
   8     if (!route.data || !route.data.preload) return Observable.of(null)
   9
  10     if (typeof route.data.preload === 'number') {
  11       return Observable.timer(route.data.preload).switchMap(() => load())
  12     }
  13
  14     return load()
  15   }
  16 }