import * as request from 'request';
import { Storage } from './storage';
export declare class CurrencyRateService {
    request: request.RequestAPI<any, any, any>;
    apiKey: string;
    providers: any[];
    storage: Storage;
    apiUrl: '';
    init(opts: any, cb: any): void;
    startCron(opts: any, cb: any): any;
    _fetch(cb?: any): void;
    _retrieve(cb: any): void;
    convertRates(raw: any): any;
}
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