import {Injectable} from '@angular/core'; import {ActivatedRouteSnapshot, Resolve, RouterStateSnapshot} from '@angular/router'; import {Observable} from 'rxjs/internal/Observable'; import {ClosingStock} from './closing-stock'; import {ClosingStockService} from './closing-stock.service'; @Injectable({ providedIn: 'root' }) export class ClosingStockResolver implements Resolve { constructor(private ser: ClosingStockService) { } resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable { const date = route.paramMap.get('date'); return this.ser.list(date); } }