Chapter 4. URL Matching

At the core of the Angular router lies a powerful URL matching engine, which transforms URLs and converts them into router states. Understanding how this engine works is important for implementing advanced use cases.

Once again, let's use this configuration:

[
  { path: '', pathMatch: 'full', redirectTo: '/inbox' },
  {
    path: ':folder',
    children: [
      {
        path: '',
        component: ConversationsCmp
      },
      {
        path: ':id',
        component: ConversationCmp,
        children: [
          { path: 'messages', component: MessagesCmp },
          { path: 'messages/:id', component: MessageCmp }
        ]
      }
    ]
  },
  {
    path: 'compose',
    component: ComposeCmp,
    outlet: 'popup'
  },
  {
    path: 'message/:id',
    component: PopupMessageCmp,
    outlet: 'popup'
  }
]

First, note that every...