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 import { Injectable } from "@angular/core";
   5
   6 @Injectable()
   7 export class PreloadSelectedModulesList implements PreloadingStrategy {
   8   preload (route: Route, load: Function): Observable<any> {
   9     if (!route.data || !route.data.preload) return ofObservable(null)
  10
  11     if (typeof route.data.preload === 'number') {
  12       return observableTimer(route.data.preload).pipe(switchMap(() => load()))
  13     }
  14
  15     return load()
  16   }
  17 }