import { HttpClient } from '@angular/common/http';
import { SwPush } from '@angular/service-worker';
/**
 * A base service that provides functionality regarding notifications.
 */
export declare abstract class NgxPwaNotificationService {
    private readonly swPush;
    private readonly http;
    /**
     * The url to send a new push subscription to.
     */
    abstract readonly API_ENABLE_NOTIFICATIONS_URL: string;
    /**
     * The url to send a request to when wanting to disable notifications.
     */
    abstract readonly API_DISABLE_NOTIFICATIONS_URL: string;
    /**
     * The public key of your VAPID key pair.
     * Is needed to receive and display push notifications.
     */
    abstract readonly VAPID_PUBLIC_KEY: string;
    /**
     * Whether or not the current user has notifications enabled.
     */
    get hasNotificationsEnabled(): boolean;
    constructor(swPush: SwPush, http: HttpClient);
    /**
     * Asks the user for permission to use push notifications.
     */
    askForNotificationPermission(): Promise<void>;
    /**
     * Enables notifications by sending a push subscription to the server.
     * @param pushSubscription - The push subscription to send to the server.
     */
    protected enableNotifications(pushSubscription: PushSubscription): Promise<void>;
    /**
     * Disables notifications.
     */
    disableNotifications(): Promise<void>;
}