import { Product } from './Product';
/**
 * Delegate responsible for custom purchase and restore handling.
 * When this delegate is provided, it replaces the default Qonversion SDK purchase flow.
 */
export interface PurchaseDelegate {
    /**
     * Handle purchase for the given product.
     * @param product Product to purchase.
     * @returns Promise that completes successfully when purchase finishes, otherwise throws an error.
     */
    purchase(product: Product): Promise<void>;
    /**
     * Handle restore flow.
     * @returns Promise that completes successfully when restore finishes, otherwise throws an error.
     */
    restore(): Promise<void>;
}