import { VKAuthCaptchaSetupData, VKAuthCaptchaSuccessData } from './types';
export declare class Captcha {
    private readonly events;
    private readonly showReadyPromiseTask;
    private readonly uuid;
    private readonly captchaData;
    private readonly scheme?;
    private iframe;
    private bridge;
    constructor(uuid: string, captchaData: VKAuthCaptchaSetupData, scheme?: string);
    private readonly init;
    private readonly createFrame;
    private readonly handleError;
    private readonly onMessage;
    private readonly handleCaptcha;
    readonly destroy: () => void;
    readonly show: () => Promise<VKAuthCaptchaSuccessData>;
}