app.routing.ts

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

import { HomeComponent } from './home/home.component';
import { PageNotFoundComponent } from './app.component';

const appRoutes: Routes = [
  { path: '', component: HomeComponent },
  { path: '**', component: PageNotFoundComponent },
];

export const AppRouting: ModuleWithProviders = RouterModule.forRoot(appRoutes);