import { DateTime } from "@arkecosystem/platform-sdk-intl";
import { NumberLike } from "@arkecosystem/platform-sdk-support";
import { IExchangeRateService, IProfile } from "./contracts";
export declare class ExchangeRateService implements IExchangeRateService {
    #private;
    /** {@inheritDoc IExchangeRateService.syncAll} */
    syncAll(profile: IProfile, currency: string): Promise<void>;
    /** {@inheritDoc IExchangeRateService.exchange} */
    exchange(currency: string, exchangeCurrency: string, date: DateTime, value: NumberLike): number;
    /** {@inheritDoc IExchangeRateService.snapshot} */
    snapshot(): Promise<void>;
    /** {@inheritDoc IExchangeRateService.restore} */
    restore(): Promise<void>;
}