class  final 
Represents the state of the router at a moment in time.
class RouterStateSnapshot extends Tree<ActivatedRouteSnapshot> {
  url: string
  toString(): string
}   This is a tree of activated route snapshots. Every node in this tree knows about the "consumed" URL segments, the extracted parameters, and the resolved data.
The following example shows how a component is initialized with information from the snapshot of the root node's state at the time of creation.
@Component({templateUrl:'template.html'})
class MyComponent {
  constructor(router: Router) {
    const state: RouterState = router.routerState;
    const snapshot: RouterStateSnapshot = state.snapshot;
    const root: ActivatedRouteSnapshot = snapshot.root;
    const child = root.firstChild;
    const id: Observable<string> = child.params.map(p => p.id);
    //...
  }
}   | Property | Description | 
|---|---|
  url: string  |    The url from which this snapshot was created  |  
|    toString()     | 
|---|
   |  
    © 2010–2023 Google, Inc.
Licensed under the Creative Commons Attribution License 4.0.
    https://angular.io/api/router/RouterStateSnapshot