/**
 * This encompasses a widget for a given site key.
 */
export interface RecaptchaWidgetInterface {
    /** execute the recaptcha request and returns a token */
    execute(): Promise<string>;
}
/**
 * The combines parameters from the Recaptcha config and adds the zIndex, which
 * allows us to control the z-index of the recaptcha widget.
 */
export type RecaptchaWidgetConfig = Pick<ReCaptchaV2.Parameters, 'tabindex' | 'theme' | 'type' | 'size' | 'badge'> & {
    zIndex?: number;
};
/**
 * This encompasses a widget for a given site key.
 */
export declare class RecaptchaWidget implements RecaptchaWidgetInterface {
    private executionSuccessBlock?;
    private executionExpiredBlock?;
    private executionErrorBlock?;
    private grecaptchaLibrary;
    private siteKey;
    private widgetId;
    private isExecuting;
    constructor(config: {
        siteKey: string;
        grecaptchaLibrary: ReCaptchaV2.ReCaptcha;
    }, widgetConfig?: RecaptchaWidgetConfig);
    /** @inheritdoc */
    execute(): Promise<string>;
    private finishExecution;
    private setup;
    private createContainer;
    private responseHandler;
    private expiredHandler;
    private errorHandler;
}