title: Unexpected value 'undefined' imported by the module
body: <p>I thought I understood how <code>ngModule</code> worked but apparently not. I have 3 modules: <code>AppModule</code>, <code>AmpedFormsModule</code>, and <code>AmpedCommonModule</code> (which are below) The issue is that when I try and import the <code>AmpedFormsModule</code> into <code>AmpedCommonModule</code> it gives me this error and the console log give me undefined:</p>
  
  <blockquote>
    <p>Unexpected value 'undefined' imported by the module 'AmpedCommonModule'</p>
  </blockquote>
  
  <p>I've tried quite a few things with playing with the imports but haven't had any success. I also tried to create another module and had the same issue with that module which trying to import either the Common or Form modules. Any point in the right direction is much appreciated!</p>
  
  <p><strong>app.module.ts</strong></p>
  
  <pre><code>import { NgModule }       from '@angular/core';
  import { HttpModule }     from '@angular/http';
  import { BrowserModule }  from '@angular/platform-browser';
  import { RouterModule }   from '@angular/router';
  
  import { ModalModule } from 'angular2-modal';
  import { BootstrapModalModule } from 'angular2-modal/plugins/bootstrap';
  
  import { AppComponent }  from './app.component';
  import { HomepageComponent }  from './app.homepage';
  
  import { AmpedFormsModule }       from './amped/forms/amped.forms.module';
  import { AmpedCommonModule }      from './amped/common/amped.common.module';
  
  
  import { routes,
    appRoutingProviders }  from './app.routes';
  
  import
    { LocationStrategy, HashLocationStrategy} from '@angular/common';
  
  
  @NgModule({
    imports:      [
      BrowserModule,
      AmpedFormsModule,
      AmpedCommonModule,
      HttpModule,
      ModalModule.forRoot(),
      BootstrapModalModule,
      routes
    ],
    declarations: [ AppComponent, HomepageComponent ],
    providers : [appRoutingProviders, {provide: LocationStrategy, useClass: HashLocationStrategy}],
    bootstrap:    [ AppComponent ]
  })
  export class AppModule { }
  </code></pre>
  
  <p><strong>./amped/forms/amped.forms.module</strong></p>
  
  <pre><code>import { NgModule }           from '@angular/core';
  import { CommonModule }       from '@angular/common';
  import { HttpModule }         from '@angular/http';
  import {
    FormsModule,
    ReactiveFormsModule }       from '@angular/forms';
  
  // ... imports
  
  import { AmpedCommonModule }  from '../common/amped.common.module';
  
  
  @NgModule({
    imports         : [ CommonModule, FormsModule, ReactiveFormsModule, HttpModule, AmpedCommonModule ],
    declarations    : [ ... declarations ],
    exports         : [ ... exports ],
    providers       : [ ... services ],
    entryComponents : [  ]
  })
  export class AmpedFormsModule {}
  </code></pre>
  
  <p><strong>./amped/common/amped.common.module</strong></p>
  
  <pre><code>import { NgModule }       from '@angular/core';
  import { BrowserModule }  from '@angular/platform-browser';
  import { FormsModule }    from '@angular/forms';
  
  // ... imports
  
  import { AmpedFormsModule } from '../forms/amped.forms.module';
  
  console.log('CRUUD', AmpedFormsModule);
  
  @NgModule({
    imports       : [BrowserModule, FormsModule, AmpedFormsModule],
    declarations    : [ ... declarations ],
    exports         : [ ... exports ],
    providers       : [  ],
  })
  export class AmpedCommonModule { }</code></pre>
  
  <p><strong>app.routes.ts</strong></p>
  
  <pre><code>import { ModuleWithProviders } from '@angular/core';
  import { Routes, RouterModule } from '@angular/router';
  
  import { HomepageComponent }  from './app.homepage';
  
  import { crudRoutes } from './amped/forms/amped.forms.routes';
  
  export const appRoutes: Routes = [
    ...crudRoutes,
    { path: '', component: HomepageComponent, pathMatch: 'full' },
  ];
  
  export const appRoutingProviders: any[] = [];
  
  export const routes: ModuleWithProviders = RouterModule.forRoot(appRoutes);</code></pre>
  
  <p><strong>./amped/forms/amped.forms.routes</strong></p>
  
  <pre><code>export const crudRoutes: Routes = [
    { path: 'edit/:model', component: AmpedCrudTableComponent },
    { path: 'edit/:model/:id', component: AmpedCrudFormComponent }
  ];</code></pre>