Tax done

bookie/src/app/product/product-list-resolver.service.ts

@@ -0,0 +1,18 @@
+import {Injectable} from '@angular/core';
+import {ActivatedRouteSnapshot, Resolve, RouterStateSnapshot} from '@angular/router';
+import {Product} from '../core/product';
+import {Observable} from 'rxjs/internal/Observable';
+import {ProductService} from './product.service';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class ProductListResolver implements Resolve<Product[]> {
+
+  constructor(private ser: ProductService) {
+  }
+
+  resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<Product[]> {
+    return this.ser.list();
+  }
+}