From router5@6.1.0 and onwards, your router instance is compatible with most observable libraries.

Subscribing to state changes

You can subscribe to route changes using router.subscribe(), and will receive an object containing route and previousRoute.

Observing state changes

Router instances are observables. You can use most stream libraries out there and create a stream from your router instance:

• RxJS (Rx.Observable.from(router))

• xstream (xs.fromObservable(router))

• most (most.from(router))

• etc...