/// <reference types="node" />
import { Secret } from 'jsonwebtoken';
import { Notification } from '../notifications/notification';
import { Http2Wrapper } from './http2-wrapper';
export declare enum Host {
    production = "api.push.apple.com",
    development = "api.sandbox.push.apple.com"
}
export interface SigningToken {
    value: string;
    timestamp: number;
}
export interface ApnsOptions {
    team: string;
    signingKey: Secret;
    keyId: string;
    defaultTopic?: string;
    host?: Host | string;
    requestTimeout?: number;
    pingInterval?: number;
    connections?: number;
}
export declare class ApnsClient extends Http2Wrapper {
    readonly team: string;
    readonly keyId: string;
    readonly host: Host | string;
    readonly signingKey: Secret;
    readonly defaultTopic?: string;
    private _token;
    private _emitter;
    constructor(options: ApnsOptions);
    send(notification: Notification): Promise<{
        status: number;
        statusText: any;
        headers: import("http2").IncomingHttpHeaders;
        body: unknown;
    }>;
    sendMany(notifications: Notification[]): Promise<({
        status: number;
        statusText: any;
        headers: import("http2").IncomingHttpHeaders;
        body: unknown;
    } | {
        error: any;
    })[]>;
    /**
     *
     * @param notification
     * @returns
     */
    private _push;
    /**
     *
     * @param notification
     * @returns
     */
    private _buildHeaders;
    /**
     *
     * @param deviceToken
     * @returns
     */
    private _getPath;
    /**
     *
     * @returns
     */
    private _getSigningToken;
    /**
     *
     */
    private _handleEvents;
    /**
     *
     */
    private _resetSigningToken;
}