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

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