Extract current path on every route change in Angular

Assume we start navigation in once component but want to know where we go in another (e.g. in a menu).

this.router.events.subscribe(r => {

      if (r instanceof NavigationEnd) {

        const tree: UrlTree = this.router.parseUrl(r.url);

        const g: UrlSegmentGroup = tree.root.children[PRIMARY_OUTLET];

        const s: UrlSegment[] = g.segments;

        if (s.length > 0)

          this.activePath = s[0].path;

      }

 });

ActivatedRoute fires only once, while listening to the router events is effective in figuring out current navigation path.