import { BaseEmbed } from "./base-embed";
import type { CardEmbedType, EmbedCallbacks, EmbedConfiguration, EmbedSyncConfiguration, EmbedTimeoutConfiguration } from "./embed-configuration";
import type { Environment } from "./environment";
import type { Styles } from "./styles";
type RequireAtLeastOne<T, Keys extends keyof T = keyof T> = Keys extends keyof T ? Required<Pick<T, Keys>> & Partial<Omit<T, Keys>> : never;
export type CardEmbedIframeConfigurations = RequireAtLeastOne<{
    pan?: EmbedConfiguration;
    cvv?: EmbedConfiguration;
    expMonth?: EmbedConfiguration;
    expYear?: EmbedConfiguration;
}>;
export type CardEmbedCallbacks = {
    onCopy?: (embedType: CardEmbedType, success: boolean) => void;
};
export type CardEmbedConfiguration = EmbedCallbacks & CardEmbedCallbacks & EmbedSyncConfiguration & EmbedTimeoutConfiguration;
export declare class CardEmbed extends BaseEmbed {
    private isRevealed;
    private readonly onCopy?;
    private revealCardDetailsPromise?;
    private readonly revealedIframes;
    private readonly visibleIframes;
    private copyMessageListenerAttached;
    constructor(sessionToken: string, environment: Environment, apiUrl: string, configuration?: CardEmbedConfiguration);
    /**
     * Toggles all mounted card fields between masked and revealed states.
     *
     * The first reveal requests card details for each mounted field. If no
     * fields are mounted or the operation is aborted, it resolves without
     * changing the masking state.
     *
     * @returns A `Promise<boolean>` that resolves to `true` when this call
     * sends a toggle message to at least one iframe and updates the SDK's
     * local masking state, or `false` when no toggle message is sent. This
     * result does not represent acknowledgement from the iframe.
     * @throws `CardDetailsRequestError` If a card iframe reports an
     * error while requesting card details or does not respond before the SDK
     * timeout.
     */
    toggleMasking(): Promise<boolean>;
    /**
     * @throws `EmbedMountError` If the iframe does not render before the SDK
     * timeout.
     */
    mountPan(target: Element | string, styles?: Styles): Promise<void>;
    /**
     * @throws `EmbedMountError` If the iframe does not render before the SDK
     * timeout.
     */
    mountCvv(target: Element | string, styles?: Styles): Promise<void>;
    /**
     * @throws `EmbedMountError` If the iframe does not render before the SDK
     * timeout.
     */
    mountExpMonth(target: Element | string, styles?: Styles): Promise<void>;
    /**
     * @throws `EmbedMountError` If the iframe does not render before the SDK
     * timeout.
     */
    mountExpYear(target: Element | string, styles?: Styles): Promise<void>;
    /**
     * @throws `EmbedMountError` If any iframe does not render before the SDK
     * timeout.
     */
    mount(configuration: CardEmbedIframeConfigurations): Promise<void>;
    unmount(): Promise<void>;
    private revealCardDetails;
    private createCopyMessageListener;
    private removeCopyMessageListener;
    private handleCopyMessage;
}
export {};