export interface ReCaptcha {
    /**
     * Renders the container as a reCAPTCHA widget and returns the ID of the newly created widget.
     * @param container The HTML element to render the reCAPTCHA widget.
     * Specify either the ID of the container (string) or the DOM element itself.
     * @param parameters An object containing parameters as key=value pairs,
     * for example, {"sitekey": "your_site_key", "theme": "light"}. See @see render parameters.
     * @param inherit Invisible reCAPTCHA only. Use existing data-* attributes
     * on the element if the corresponding parameter is not specified.
     * The values in parameters will take precedence over the attributes.
     * @return the ID of the newly created widget.
     */
    render(container: (string | HTMLElement), parameters?: Parameters, inherit?: boolean): number;
    /**
     * Resets the reCAPTCHA widget.
     * @param optWidgetId Optional widget ID, defaults to the first widget created if unspecified.
     */
    reset(optWidgetId?: number): void;
    /**
     * Gets the response for the reCAPTCHA widget.
     * @param optWidgetId Optional widget ID, defaults to the first widget created if unspecified.
     * @return the response of the reCAPTCHA widget.
     */
    getResponse(optWidgetId?: number): string;
    /**
     * Programatically invoke the reCAPTCHA check. Used if the invisible reCAPTCHA is on a div instead of a button,
     * can also be used for recaptcha v3.
     * @param optWidgetId Optional widget ID, defaults to the first widget created if unspecified.
     * @param optActionName Optional action name, should be passed to get action specific recaptcha V3 recpatcha.
     */
    execute(optWidgetId?: number, optActionName?: {
        action: string;
    }): void;
}
export declare type ReCaptchaTheme = 'light' | 'dark';
export declare type ReCaptchaType = 'image' | 'audio';
export declare type ReCaptchaSize = 'normal' | 'compact' | 'invisible';
export declare type ReCaptchaBadge = 'bottomright' | 'bottomleft' | 'inline';
export interface Parameters {
    /**
     * Your sitekey.
     */
    sitekey: string;
    /**
     * Optional. The color theme of the widget.
     * Accepted values: "light", "dark"
     * @default "light"
     */
    theme?: ReCaptchaTheme;
    /**
     * Optional. The type of CAPTCHA to serve.
     * Accepted values: "audio", "image"
     * @default "image"
     */
    type?: ReCaptchaType;
    /**
     * Optional. The size of the widget.
     * Accepted values: "compact", "normal", "invisible".
     * @default "compact"
     */
    size?: ReCaptchaSize;
    /**
     * Optional. The tabindex of the widget and challenge.
     * If other elements in your page use tabindex, it should be set to make user navigation easier.
     */
    tabindex?: number;
    /**
     * Optional. The badge location for g-recaptcha with size of "invisible".
     *
     * @default "bottomright"
     */
    badge?: ReCaptchaBadge;
    /**
     * Optional. Your callback function that's executed when the recaptcha response expires
     * and the user needs to solve a new CAPTCHA.
     */
    'expired-callback'?: Function;
    /**
     * Optional. Your callback function that's executed when the user submits a successful CAPTCHA response.
     * The user's response, g-recaptcha-response, will be the input for your callback function.
     */
    callback?(response: string): void;
}