Configuring router service

We can configure the router service by passing the following options to RouterModule.forRoot :

• The enableTracing option makes the router log all its internal events to the console
• The useHash option enables the location strategy that uses the URL fragment instead of the history API
• The initialNavigation option disables the initial navigation
• The errorHandler option provides a custom error handler

Let's look at each of them in detail.

Enable tracing

Setting enableTracing to true is a great way to learn how the router works as shown in the following code:

@NgModule({
   imports: [RouterModule.forRoot(ROUTES, {enableTracing: true})]
 })
 class MailModule {}

With this option set, the router will log every internal event to the your console. You'll see something like the following code:

Router Event: NavigationStart
 NavigationStart(id: 1, url: '/inbox')
 
 Router Event: RoutesRecognized
 RoutesRecognized(id: 1, url: '/inbox...