import type { DinteroCheckoutInstance } from "./index.js";
import type { AddressCallbackResult, CheckoutEvents, InternalCheckoutEvents, SessionEvent, SessionValidationCallback } from "./checkout.js";
/**
 * Unsubscribe handler from event(s).
 */
export type SubscriptionHandler = (sessionEvent: SessionEvent, checkout: DinteroCheckoutInstance) => void;
interface SubscriptionOptions {
    sid: string;
    endpoint: string;
    handler: SubscriptionHandler;
    eventTypes: (CheckoutEvents | InternalCheckoutEvents)[];
    checkout: DinteroCheckoutInstance;
    source: Window | null;
}
export type Subscription = {
    /**
     * Unsubscribe handler from event(s).
     */
    unsubscribe: () => void;
};
/**
 * Post a SessionLock-event to the checkout iframe.
 */
export declare const postSessionLock: (iframe: HTMLIFrameElement, sid: string) => void;
/**
 * Post the validation result to the checkout iframe
 */
export declare const postValidationResult: (iframe: HTMLIFrameElement, sid: string, result: SessionValidationCallback) => void;
/**
 * Post the address call back result to the checkout iframe
 */
export declare const postAddressCallbackResult: (iframe: HTMLIFrameElement, sid: string, result: AddressCallbackResult) => void;
/**
 * Post RefreshSession-event to the checkout iframe.
 */
export declare const postSessionRefresh: (iframe: HTMLIFrameElement, sid: string) => void;
/**
 * Post SetActivePaymentProductType-event to the checkout iframe.
 */
export declare const postActivePaymentProductType: (iframe: HTMLIFrameElement, sid: string, paymentProductType?: string) => void;
/**
 * Post ClosePopOut-event to the checkout iframe.
 */
export declare const postValidatePopOutEvent: (iframe: HTMLIFrameElement, sid: string) => void;
/**
 * Post OpenPopOutFailed-event to the checkout iframe.
 */
export declare const postOpenPopOutFailedEvent: (iframe: HTMLIFrameElement, sid: string) => void;
/**
 * Post OpenedPopOut-event to the checkout iframe.
 */
export declare const postOpenPopOutEvent: (iframe: HTMLIFrameElement, sid: string) => void;
/**
 * Post ClosePopOut-event to the checkout iframe.
 */
export declare const postClosePopOutEvent: (iframe: HTMLIFrameElement, sid: string) => void;
/**
 * Post SetLanguage-event to the checkout iframe.
 */
export declare const postSetLanguage: (iframe: HTMLIFrameElement, sid: string, language: string) => void;
/**
 * Subscribe to events from an iframe given a handler and a set
 * of event types.
 */
export declare const subscribe: (options: SubscriptionOptions) => Subscription;
export {};