/*!
 * @package @coolgk/utils
 * @version 3.1.4
 * @link https://github.com/coolgk/node-utils
 * @license MIT
 * @author Daniel Gong <daniel.k.gong@gmail.com>
 *
 * Copyright (c) 2017 Daniel Gong <daniel.k.gong@gmail.com>. All rights reserved.
 * Licensed under the MIT License.
 */

/// <reference types="request" />
/*!
 *  Copyright (c) 2017 Daniel Gong <daniel.k.gong@gmail.com>. All rights reserved.
 *  Licensed under the MIT License.
 */
import * as request from 'request';
export interface ICaptchaConfig {
    readonly request?: typeof request;
    readonly secret: string;
}
export interface IResult {
    success: boolean;
    [index: string]: any;
}
export declare class Captcha {
    static readonly _RECAPTCHA_URL: string;
    protected _secret: string;
    protected _request: typeof request;
    constructor(options: ICaptchaConfig);
    verify(response: string, remoteip?: string): Promise<IResult>;
}
export declare function verify(secret: string, response: string, remoteip?: string): Promise<IResult>;
export default Captcha;