import { Decimal } from 'decimal.js';
import { ExchangeRateJSON, CurrencyCode } from '../interfaces';
/**
 * Record containing Zumo exchange rates for information purposes only.
 * Can be used to display amounts in local currency to the user.
 */
export declare class ExchangeRate {
    /** @internal */
    json: ExchangeRateJSON;
    /** Identifier. */
    id: string;
    /** Currency from which exchange is being made. */
    fromCurrency: CurrencyCode;
    /** Currency to which exchange is being made. */
    toCurrency: CurrencyCode;
    /** Value of 1 unit of source currency in target currency. */
    value: Decimal;
    /** Epoch timestamp when the exchange rate was issued. */
    timestamp: number;
    /** @internal */
    constructor(json: ExchangeRateJSON);
}