import { Logger } from 'log4js';
import { RequestConfig, Response } from '../../dex-helper/irequest-wrapper';
export declare class SkippingRequest {
    message: string;
    constructor(message?: string);
}
export type RequestInfo<T> = {
    requestFunc?: (options: RequestConfig) => Promise<Response<T> | SkippingRequest>;
    requestOptions: RequestConfig;
    caster: (data: unknown) => T;
    authenticate?: (options: RequestConfig) => RequestConfig;
    excludedFieldsCaching?: string[];
};
export type RequestInfoWithHandler<T> = {
    info: RequestInfo<T>;
    handler: (data: T) => void;
};
export declare class WebSocketFetcher<T> {
    private logger;
    private requests;
    private timeoutInterval;
    private reconnectDelay;
    private pingTimeout;
    lastFetchSucceeded: boolean;
    private stop;
    private connection;
    constructor(requestsInfo: RequestInfoWithHandler<T>, logger: Logger, timeoutInterval?: number, reconnectDelay?: number);
    private connected;
    private heartbeat;
    private onClose;
    private onError;
    private onMessage;
    private connect;
    reconnectWithDelay(): void;
    reconnect(): void;
    startPolling(): void;
    stopPolling(): void;
    isPolling(): boolean;
}