Authentication in Angular 2 - part 7

app-injector.ts

// app-injector.ts
import { Injector } from '@angular/core';

let appInjectorRef: Injector;
export const appInjector = (injector?: Injector):Injector => {
  if (injector) {
    appInjectorRef = injector;
  }

  return appInjectorRef;
};