import { SseData } from '../types/entity';
interface SseOptions {
    url: string;
    token: string;
    retryInterval?: number;
    connectTimeout?: number;
    maxRetries?: number;
    onMessage?: (response: SseData) => void;
    onReconnectSuccess?: () => void;
    onConnectionClosed?: (isAuthError: boolean) => void;
}
declare class SseClient {
    private url;
    private token;
    private eventSource;
    private reconnectAttempts;
    private maxReconnectAttempts;
    private reconnectTimeout;
    private connectTimeout;
    private reconnectTimer;
    private handlers;
    private connected;
    private onMessageCallback?;
    private onReconnectSuccessCallback?;
    private onConnectionClosedCallback?;
    constructor(options: SseOptions);
    private removeAllEventListeners;
    private _openHandler;
    private _errorHandler;
    private _messageHandler;
    private _customHandlers;
    private connectTimeoutRef;
    subscribe(type: string, handler: Function): void;
    connect(): Promise<string>;
    private notifyConnectionClosed;
    private handleReconnect;
    private cleanup;
    unsubscribe(): void;
    destroySse(): void;
    close(): void;
    isConnected(): boolean;
}
export default SseClient;