import {Injectable} from '@angular/core'; import {ActivatedRouteSnapshot, Resolve, RouterStateSnapshot} from '@angular/router'; import {Observable} from 'rxjs/internal/Observable'; import {Account} from '../account/account'; import {AccountService} from '../account/account.service'; @Injectable({ providedIn: 'root' }) export class ReceiptAccountsResolver implements Resolve { constructor(private ser: AccountService) { } resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable { return this.ser.receiptAutocomplete(''); } }