import { SagePayOptions } from './configOptions';
import { ThreeDSecureOutput } from './three-d-secure-output';
import { PaymentTransactionOutput, PaymentTransactionInput, CompletePaymentTransactionInput as CompleteTransactionInput } from './payment-transaction';
import { RefundTransactionInput } from './refund-transaction';
export declare class SagePayClient {
    private options;
    private readonly createMerchantSessionKey;
    private readonly createCardIdentifier;
    private readonly createLinkCardIdentifier;
    createPaymentTransaction: (paymentTransactionInput: PaymentTransactionInput) => Promise<PaymentTransactionOutput | ThreeDSecureOutput>;
    completePaymentTransaction: (completeTransactionInput: CompleteTransactionInput) => Promise<PaymentTransactionOutput>;
    createRefundTransaction: (refundTransactionInput: RefundTransactionInput) => Promise<PaymentTransactionOutput>;
    constructor(options: SagePayOptions);
}
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