import * as Pusher from 'pusher';
export declare class PusherService {
    private readonly options;
    private readonly chunkingOptions;
    private readonly pusher;
    private readonly logger;
    constructor(options: Pusher.Options, chunkingOptions: {
        limit: number;
        enabled: boolean;
    });
    /**
     * Returns the underlying pusher instance
     */
    getPusherInstance(): Pusher;
    /**
     * Authenticates the target `socketId` into a private channel
     *
     * @param socketId
     * @param channelName
     * @param data
     */
    authorizeChannel(socketId: string, channelName: string, data?: Pusher.PresenceChannelData): Pusher.ChannelAuthResponse;
    /**
     * Sends an event to the given channel and optionally exclude a socket id if provided
     * If the data is undefined or null an error message will be thrown
     *
     * @param channel
     * @param event
     * @param data
     * @param socketId
     */
    trigger<T = any>(channel: string | string[], event: string, data?: T, socketId?: string): Promise<Pusher.Response | Pusher.Response[]>;
}