Angular 2 check next route OnDestroy

Question

I am trying to trigger action on any NavigationEnd router event, except when navigating between a) child routes; b) on one another specific route.

Here is a piece of my app.routing.ts:

// some other routes setup...

{ path: 'scrapers/:version', component: SingleScraperComponent, children: [
    { path: '', redirectTo: 'statistics', pathMatch: 'full' },
    { path: 'statistics', component: ScraperStatisticComponent },
    { path: 'targets', component: ScraperTargetsComponent },
]},

// some other routes setup...

Here is my Router events subscription in SingleScraperComponent:

// some component code

ngOnInit(): void {
    this._router.events.filter(event => event instanceof NavigationEnd).takeWhile(() => this.isAlive).subscribe(
        (event: NavigationEnd) => {
            console.log(event);
            if (event.url.indexOf('site-preview') === -1) {
               this._site.resetQuery();
            }
        }
    );
}

// some component code

I could also use OnDestroy, but I need to know next route after SingleScraperComponent destruction.

Answer 1

Ok, I have used routerState snapshot to verify next route:

ngOnDestroy(): void {
    if (this._router.routerState.snapshot.url.indexOf('site-preview') > -1) {
        console.log('Hello, from needed route!');
    }
}

But if there is a more clear way I would appreciate to know.