Feature: Open bill using bill number

bookie/src/app/sales/bills/update-table-resolver.service.ts

@@ -0,0 +1,14 @@
+import { Injectable } from '@angular/core';
+import { ActivatedRouteSnapshot, Resolve } from '@angular/router';
+import { Observable, of as observableOf } from 'rxjs';
+
+@Injectable({
+  providedIn: 'root',
+})
+export class UpdateTableResolver implements Resolve<boolean> {
+  constructor() {}
+
+  resolve(route: ActivatedRouteSnapshot): Observable<boolean> {
+    return route.queryParamMap.get('bill') !== null ? observableOf(false) : observableOf(true);
+  }
+}