import { Network } from '../../constants';
import { IDexHelper } from '../../dex-helper';
import { Logger } from '../../types';
import { HashflowRateFetcherConfig } from './types';
export declare class RateFetcher {
    private dexHelper;
    private dexKey;
    private network;
    private logger;
    private rateFetcher;
    private pricesCacheKey;
    private pricesCacheTTL;
    private marketMakersFetcher;
    private marketMakersCacheKey;
    private marketMakersCacheTTL;
    constructor(dexHelper: IDexHelper, dexKey: string, network: Network, logger: Logger, config: HashflowRateFetcherConfig);
    start(): void;
    stop(): void;
    private handleMarketMakersResponse;
    private handleRatesResponse;
}