import { SaleData } from "../../typings/tapi/saleData";
import { SaleToAcquirerData } from "./saleToAcquirerData";
/**
 * A helper class to work with `SaleData` from the TAPI (Cloud device API) model.
 *
 * The `SaleToAcquirerData` field supports two formats:
 * - Base64-encoded JSON: a JSON object encoded as a Base64 string.
 * - Key-value pairs: form-encoded pairs using `&` as separator
 *   (e.g. `shopperEmail=foo@bar.com&tenderOption=AskGratuity`).
 *
 * This helper auto-detects the format and parses it into a {@link SaleToAcquirerData} object.
 */
export declare class SaleDataHelper {
    private saleData;
    /**
     * Constructs a helper instance wrapping the provided {@link SaleData}.
     *
     * @param saleData The {@link SaleData} instance to wrap.
     */
    constructor(saleData: SaleData);
    /**
     * Parses the `SaleToAcquirerData` field into a {@link SaleToAcquirerData} object.
     * Supports both Base64-encoded JSON and form-encoded key-value pair formats.
     *
     * @returns The parsed {@link SaleToAcquirerData}, or `null` if the field is absent
     * or cannot be parsed.
     */
    getSaleToAcquirerData(): SaleToAcquirerData | null;
}