DI simple routed application

di_simple_router_application.ts

@Component({
  selector: 'my-app',
  template: `<router-outlet></router-outlet>`,
})
export class AppComponent {}
...
@NgModule({
  imports: [
    BrowserModule,
    RouterModule.forRoot([
      { path: 'child', component: ChildComponent },
      { path: '', redirectTo: '/child', pathMatch: 'full' }
    ])
  ],
  declarations: [
    AppComponent,
    ChildComponent,
    GrandChildComponent
  ],
  bootstrap: [ AppComponent ]
})
export class AppModule { }