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