export class AppComponent implements OnInit {
	activeUser: User = null;

	...

	loginCompleted = (user: User) => {
		this.activeUser = user;
	}

	routingActivated(element: ElementRef) {
		// Login complete
		if (element instanceof LoginComponent) {
			element.loginComplete.subscribe(this.loginCompleted);
		} else if (element instanceof RegisterComponent) {
			element.loginComplete.subscribe(this.loginCompleted);
		}
	}

	routingDeactivated(element: ElementRef) {
		// Login complete
		if (element instanceof LoginComponent) {
			element.loginComplete.unsubscribe();
		} else if (element instanceof RegisterComponent) {
			element.loginComplete.unsubscribe();
		}
	}
}