import type { ResolvedPayWayConfig } from '../config.js';
import type { HttpClient } from '../utils/http.js';
import type { PurchaseParams, PurchaseResponse } from '../types/checkout.js';
/**
 * Checkout API - handles payment transactions
 */
export declare class CheckoutAPI {
    private config;
    private http;
    constructor(config: ResolvedPayWayConfig, http: HttpClient);
    /**
     * Create a purchase transaction
     *
     * @param params - Purchase parameters
     * @returns Purchase response with payment URL
     *
     * @example
     * ```typescript
     * const result = await client.checkout.purchase({
     *   amount: 10.00,
     *   tran_id: 'ORDER-123',
     *   email: 'customer@example.com',
     *   return_url: 'https://yoursite.com/payment/callback'
     * });
     * console.log('Payment URL:', result.payment_url);
     * ```
     */
    purchase(params: PurchaseParams): Promise<PurchaseResponse>;
    /**
     * Build hash string for purchase endpoint
     * Field order based on ABA PayWay documentation
     */
    private buildPurchaseHashString;
}
//# sourceMappingURL=checkout.d.ts.map