import { EventHandler, RequireMessageType, ResponseMessageType } from "../utils/type";
export interface PendingRequestResolvers {
    resolve: (data: ResponseMessageType) => void;
    reject: (err: Error) => void;
}
export declare abstract class Connection {
    private readonly events;
    protected pendingRequests: Map<string, PendingRequestResolvers>;
    abstract close(): void;
    abstract send(data: any): void;
    abstract sendExpectResponse(data: RequireMessageType): Promise<ResponseMessageType>;
    handleClientEvent(event: string, params: any, session_id: any): void;
    handleSessionList(sessionList: any): void;
    on(event: string, callback: EventHandler): void;
    off(event: string, callback: EventHandler): void;
    once(event: string, callback: EventHandler): void;
    matchPendingRequest(id: string): PendingRequestResolvers;
}