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