app-routing.module.ts

import { NgModule } from '@angular/core';
//import { CommonModule } from '@angular/common';
import { RouterModule } from '@angular/router';
import { HeroesComponent } from './heroes/heroes.component';
import { HeroDetailComponent } from './hero-detail/hero-detail.component';
import { DashboardComponent } from './dashboard/dashboard.component';

const routes = [
  { path: '', redirectTo: '/dashboard', pathMatch: 'full' },
  { path: 'heroes', component: HeroesComponent },
  { path: 'detail/:id', component: HeroDetailComponent },
  { path: 'dashboard', component: DashboardComponent },
];

@NgModule({
  declarations: [],
  imports: [
    RouterModule.forRoot(routes), //CommonModule
  ],
  exports: [ RouterModule ]
})
export class AppRoutingModule { }