import { Logger } from 'log4js';
import { IRequestWrapper } from '../../dex-helper';
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 Fetcher<T> {
    private requestWrapper;
    private pollIntervalMs;
    private logger;
    private requests;
    lastFetchSucceeded: boolean;
    private failedCount;
    private stop;
    constructor(requestWrapper: IRequestWrapper, requestsInfo: RequestInfoWithHandler<T> | RequestInfoWithHandler<T>[], pollIntervalMs: number, logger: Logger);
    fetch(force?: boolean): Promise<number[] | undefined>;
    private getUrls;
    startPolling(): void;
    stopPolling(): void;
    isPolling(): boolean;
}