/**
 * Sign a HTTP request, add 'Authorization' header to request param
 */
export declare class AWSSigner {
    /**
     * Sign a HTTP request, add 'Authorization' header to request param
     * @method sign
     * @memberof Signer
     * @static
     *
     * @param {object} request - HTTP request object
     * request: {
     *   method: GET | POST | PUT ...,
     *   url: ...,
     *   headers: { header1: ... },
     *   data: data
     * }
     *
     * @param {object} access_info - AWS access credential info
     * access_info: {
     *   access_key: ...,
     *   secret_key: ...,
     *   session_token: ...
     * }
     *
     * @param {object} [service_info] - AWS service type and region, optional,
     * if not provided then parse out from url
     * service_info: {
     *   service: ...,
     *   region: ...
     * }
     *
     * @returns {object} Signed HTTP request
     */
    static sign(request: {
        headers?: any;
        body?: any;
        data?: any;
        url: any;
        method?: any;
        service?: any;
        region?: any;
    }, access_info: {
        session_token: any;
        secret_key: string;
        access_key: string;
    }, service_info?: {
        region: string;
        service: string;
    }): {
        headers: any;
        body?: any;
        data?: any;
        url: any;
        method?: any;
        service?: any;
        region?: any;
    };
    static signUrl(urlToSign: string, accessInfo: any, serviceInfo?: any, expiration?: number): string;
    static signUrl(request: any, accessInfo: any, serviceInfo?: any, expiration?: number): string;
}