import type { PaymentCardEmbedConfig } from './types';
/**
 * A convenience wrapper for the payment card embed iframe. You don't have to use
 * this class to embed the payment card iframe, but it provides a more convenient
 * way to interact with the iframe and listen to its events.
 *
 * @example
 * const embed = new PaymentCardEmbed({
 *   url: 'https://embed.foxy.io/v1.html?template_set_id=123'
 * });
 *
 * await embed.mount(document.body);
 * console.log('Token:', await embed.tokenize());
 */
export declare class PaymentCardEmbed {
    /**
     * An event handler that is triggered when Enter is pressed in the card form.
     * This feature is not available for template sets configured with the `stripe_connect`
     * hosted payment gateway due to the limitations of Stripe.js.
     */
    onsubmit: (() => void) | null;
    private __tokenizationRequests;
    private __iframeMessageHandler;
    private __iframeLoadHandler;
    private __mountingTask;
    private __channel;
    private __iframe;
    private __config;
    private __url;
    constructor({ url, ...config }: {
        url: string;
    } & PaymentCardEmbedConfig);
    /**
     * Updates the configuration of the payment card embed.
     * You can change style, translations, language and interactivity settings.
     * To change the URL of the payment card embed, you need to create a new instance.
     * You are not required to provide the full configuration object, only the properties you want to change.
     *
     * @param config - The new configuration.
     */
    configure(config: PaymentCardEmbedConfig): void;
    /**
     * Requests the tokenization of the card data.
     *
     * @returns A promise that resolves with the tokenized card data.
     */
    tokenize(): Promise<string>;
    /**
     * Safely removes the embed iframe from the parent node,
     * closing the message channel and cleaning up event listeners.
     */
    unmount(): void;
    /**
     * Mounts the payment card embed in the given root element. If the embed is already mounted,
     * it will be unmounted first.
     *
     * @param root - The root element to mount the embed in.
     * @returns A promise that resolves when the embed is mounted.
     */
    mount(root: Element): Promise<void>;
    /**
     * Clears the card data from the embed.
     * No-op if the embed is not mounted.
     */
    clear(): void;
    protected _createMessageChannel(): MessageChannel;
    protected _createIframe(root: Element): HTMLIFrameElement;
    protected _createId(): string;
}