import { Notification } from '../interfaces/notifications.interface';
import { Observable } from 'rxjs/Observable';
export declare class NotificationsService {
    private list;
    private list$;
    /**
     * @returns An observable basic-list of notifications.
     */
    readonly items: Observable<Notification[]>;
    /**
     * Adds a new notifications to the notifications-list.
     *
     * @param {string} message The message of the notification.
     * @param {string} type The type of notification.
     */
    create(message: string, type?: 'success' | 'error' | 'info'): void;
    /**
     * Adds a new notification to the array.
     *
     * @param item The notification item.
     */
    private add(item);
    /**
     * Removes an item from the array.
     *
     * @param item The notification item.
     */
    private remove(item);
    /**
     * @returns A random id for the notification.
     */
    private getId();
}