/// <reference types="node" />
import { Logger, OnApplicationShutdown, OnModuleInit } from "@nestjs/common";
import { DiscoveredMethodWithMeta, DiscoveryService } from "@golevelup/nestjs-discovery";
import Aedes from "aedes";
import { Client } from "aedes";
import { Subscription } from "aedes";
import { IPacket } from "mqtt-packet";
import { PigeonModuleOptions, PigeonSubscriber, MqttSubscriberParameter } from "pigeon.interface";
type DiscoveredMethodWithMetaAndParameters<T> = DiscoveredMethodWithMeta<T> & {
    params: MqttSubscriberParameter[];
};
type HandlerMethodParameters = {
    client?: Client;
    packet?: IPacket;
    subscription?: Subscription;
    subscriptions?: Subscription[];
    unsubscription?: string[];
    callback?: (...args: unknown[]) => unknown;
    username?: string;
    password?: Readonly<Buffer>;
    error?: any;
};
export declare class PigeonExplorer implements OnModuleInit, OnApplicationShutdown {
    private readonly discoveryService;
    private readonly options;
    private readonly logger;
    private readonly broker;
    private readonly reflector;
    subscribers: PigeonSubscriber[];
    constructor(discoveryService: DiscoveryService, options: PigeonModuleOptions, logger: Logger, broker: Aedes);
    onModuleInit(): void;
    onApplicationShutdown(signal?: string): Promise<void>;
    init(): Promise<void>;
    processHandlerListener(subscribers: DiscoveredMethodWithMetaAndParameters<string>[], params?: HandlerMethodParameters): void;
    private getMethodParameters;
    private getSubscribers;
    private getHandlerMethodParameters;
    getHost(): {
        id: string;
        connectedClients: number;
        closed: Readonly<boolean>;
    };
}
export {};