Function afterNextNavigation

packages/router/src/utils/navigations.ts:36–66

(router: {events: Observable<Event>}, action: () => void)

 * - `NavigationError`, `NavigationEnd`, or `NavigationSkipped` event emits
 */
export function afterNextNavigation(router: {events: Observable<Event>}, action: () => void): void {
  router.events
    .pipe(
      filter(
        (e): e is NavigationEnd | NavigationCancel | NavigationError | NavigationSkipped =>
          e instanceof NavigationEnd ||
          e instanceof NavigationCancel ||
          e instanceof NavigationError ||
          e instanceof NavigationSkipped,
      ),
      map((e) => {
        if (e instanceof NavigationEnd || e instanceof NavigationSkipped) {
          return NavigationResult.COMPLETE;
        }
        const redirecting =
          e instanceof NavigationCancel
            ? e.code === NavigationCancellationCode.Redirect ||
              e.code === NavigationCancellationCode.SupersededByNewNavigation
            : false;
        return redirecting ? NavigationResult.REDIRECTING : NavigationResult.FAILED;
      }),
      filter(
        (result): result is NavigationResult.COMPLETE | NavigationResult.FAILED =>
          result !== NavigationResult.REDIRECTING,
      ),
      take(1),
    )
    .subscribe(() => {
      action();
    });
}