import { Network } from '../../constants';
import { IDexHelper } from '../../dex-helper';
import { Logger } from '../../types';
import { BebopLevel, BebopPricingResponse, BebopRateFetcherConfig } from './types';
export declare function levels_from_flat_array(values: number[]): BebopLevel[];
export declare class RateFetcher {
    private dexHelper;
    private dexKey;
    private network;
    private logger;
    private pricesFetcher;
    private pricesCacheKey;
    private pricesCacheTTL;
    private tokensFetcher;
    private tokensAddrCacheKey;
    private tokensCacheKey;
    private tokensCacheTTL;
    constructor(dexHelper: IDexHelper, dexKey: string, network: Network, logger: Logger, config: BebopRateFetcherConfig);
    parsePricingUpdate(updateObject: any): BebopPricingResponse;
    start(): void;
    stop(): void;
    private handleTokensResponse;
    private handlePricesResponse;
}