title: Exporting enums in Angular modules
body: <p>Does anyone know if it’s possible to export enums in Angular modules?
  If not, are there any best practises to ship enums within Angular modules?</p>
  
  <pre><code>// not working example
  // i dont know how to export GreatEnum
  
  import { NgModule } from '@angular/core';
  import { CommonModule } from '@angular/common';
  import { GreatComponent } from './great.component';
  import { GreatEnum } from './great.enum';
  
  @NgModule({
      imports: [
          CommonModule       
      ],
      declarations: [GreatComponent ],
      exports: [GreatComponent ]
  })
  export class GreatModule {
  }
  </code></pre>