import { EventEmitter } from 'events';
export declare class ChatSession extends EventEmitter {
    private socket;
    private sessionId;
    private userId;
    private botType;
    private middlewareUrl;
    private connected;
    private streamBuffers;
    constructor(botType: string, middlewareUrl: string, sessionId?: string);
    connect(): Promise<string>;
    private handleStreamMessage;
    send(message: string): void;
    disconnect(): void;
    getSessionId(): string | null;
}
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