Very basic routing setup

basic_routing.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { RouterModule } from '@angular/router';
import { Component, Input } from '@angular/core';
import { AppComponent } from './app.component';

@Component({
  template: `<h1>This is Component A</h1>`
})
export class ComponentA {
}

@Component({
  template: `<h1>This is Component B</h1>`
})
export class ComponentB {
}

const ROUTES = [
  { path: 'a', component: ComponentA },
  { path: 'b', component: ComponentB },
];

@NgModule({
  imports:      [ BrowserModule, RouterModule.forRoot(ROUTES) ],
  declarations: [ AppComponent, ComponentA, ComponentB ],
  bootstrap:    [ AppComponent ]
})
export class AppModule { }