/// <reference types="node" />
/**
 * QR显示在终端
 */
export declare function QRTerminal(text: string): Promise<string>;
/**
 * base64格式的预览二维码图片
 */
export declare function QRToDataURL(text: string): Promise<string>;
/**
 * 生成本地图片
 */
export declare function QRImage(filepath: string, text: string): Promise<void>;
export declare function getMACAdress(): string;
export declare function geClientInfo(): {
    mac: string;
    terminalVersion: any;
    terminalType: string;
    os: string;
    osVersion: string;
    osArch: string;
};
export declare function pause(time: number): Promise<unknown>;
/**
 * 获取缓存存放目录
 * ${home}/.alipaydev
 * /Users/nuge.lw/.alipaydev
 */
export declare function cachedir(): string;
/**
 * 获取临时文件夹
 */
export declare function tmpdir(): Promise<string>;
export declare const sleep: typeof setTimeout.__promisify__;
/**
 * 版本号比较
 * @param {string} v1 版本号
 * @param {string} operator  操作符，'>', '>=', '<=', '==', '!='
 * @param {string} v2 版本号
 * @return {boolean}
 * @example
 * util.compareVersion('1.3.2', '>', '1.2');
 * util.compareVersion('1.3.2', '>=', '1.2');
 * util.compareVersion('1.3.2', '==', '1.2');
 * util.compareVersion('1.3.2', '!=', '1.2');
 */
export declare function compareVersion(version1: string, operator: string, version2: string): boolean;
export declare function getUploadKeyLink(): string;
export declare function getMBSize(bytes: number): string;