import { Order, PaymentMethod, SupportedCurrency } from '../@types';
export declare const validateCurrency: (currency: string, currencies: string[]) => boolean;
export declare const getPaymentMethod: (paymentMethods: Array<PaymentMethod>, currentPaymentName: string) => PaymentMethod | undefined;
export declare const getSupportedSchemes: (merchantSupportedSchemes: string[], supportedSchemesOptions?: string[]) => string[];
export declare const areAllTheObjectStringValuesValid: (obj: { [key in string]?: string; }) => boolean;
export declare const getSelectedCurrency: (supportedCurrencies: SupportedCurrency[], order: Order, paymentOption?: PaymentMethod) => {
    amount: number | undefined;
    currency: "USD" | "CAD" | "EUR" | "AED" | "AFN" | "ALL" | "AMD" | "ARS" | "AUD" | "AZN" | "BAM" | "BDT" | "BGN" | "BHD" | "BIF" | "BND" | "BOB" | "BRL" | "BWP" | "BYN" | "BZD" | "CDF" | "CHF" | "CLP" | "CNY" | "COP" | "CRC" | "CVE" | "CZK" | "DJF" | "DKK" | "DOP" | "DZD" | "EEK" | "EGP" | "ERN" | "ETB" | "GBP" | "GEL" | "GHS" | "GNF" | "GTQ" | "HKD" | "HNL" | "HRK" | "HUF" | "IDR" | "ILS" | "INR" | "IQD" | "IRR" | "ISK" | "JMD" | "JOD" | "JPY" | "KES" | "KHR" | "KMF" | "KRW" | "KWD" | "KZT" | "LBP" | "LKR" | "LTL" | "LVL" | "LYD" | "MAD" | "MDL" | "MGA" | "MKD" | "MMK" | "MOP" | "MUR" | "MXN" | "MYR" | "MZN" | "NAD" | "NGN" | "NIO" | "NOK" | "NPR" | "NZD" | "OMR" | "PAB" | "PEN" | "PHP" | "PKR" | "PLN" | "PYG" | "QAR" | "RON" | "RSD" | "RUB" | "RWF" | "SAR" | "SDG" | "SEK" | "SGD" | "SOS" | "SYP" | "THB" | "TND" | "TOP" | "TRY" | "TTD" | "TWD" | "TZS" | "UAH" | "UGX" | "UYU" | "UZS" | "VEF" | "VND" | "XAF" | "XOF" | "YER" | "ZAR" | "ZMK" | "ZWL" | undefined;
};