/**
 * ApplePaySession lifecycle manager.
 * Creates the native Apple Pay payment sheet and wires merchant validation,
 * payment authorization, and cancellation handlers.
 */
export type ApplePaySessionConfig = {
    countryCode: string;
    currencyCode: string;
    supportedNetworks: string[];
    totalAmount: string;
    totalLabel: string;
    skuId: string;
    /** `checkout-redirect` to persist, or `null` to leave the host's value untouched. */
    returnUrl: string | null;
    userLoggedIn: boolean;
    onPaymentAuthorized: (event: ApplePayJS.ApplePayPaymentAuthorizedEvent, session: ApplePaySession) => Promise<void>;
    onCancel?: () => void;
};
export declare function redirectToFallbackCheckout(config: Pick<ApplePaySessionConfig, 'returnUrl' | 'skuId' | 'countryCode'>): void;
export declare function startApplePaySession(config: ApplePaySessionConfig): void;