import {Injectable} from '@angular/core'; import {ActivatedRouteSnapshot, Resolve, Router, RouterStateSnapshot} from '@angular/router'; import {Tax} from '../core/tax'; import {Observable} from 'rxjs/internal/Observable'; import {TaxService} from './tax.service'; @Injectable({ providedIn: 'root' }) export class TaxListResolver implements Resolve { constructor(private ser: TaxService, private router: Router) { } resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable { return this.ser.list(); } }