angular-cn/public/docs/_examples/ngmodule/ts/app/hero/hero.routing.ts

import { ModuleWithProviders } from '@angular/core';
import { Routes,
         RouterModule } from '@angular/router';

import { HeroComponent }       from './hero.component';
import { HeroListComponent }   from './hero-list.component';
import { HeroDetailComponent } from './hero-detail.component';

const routes: Routes = [
  { path: '',
    component: HeroComponent,
    children: [
      { path: '',    component: HeroListComponent },
      { path: ':id', component: HeroDetailComponent }
    ]
  }
];

export const routing: ModuleWithProviders = RouterModule.forChild(routes);