import Crypto from 'crypto';
import Stream from 'stream';
import Fs from 'fs';
export declare const createHash: (str: Crypto.BinaryLike, type?: string, target?: Crypto.BinaryToTextEncoding) => any;
export declare const createHmac: (str: Crypto.BinaryLike, key: Crypto.BinaryLike, type?: string, target?: Crypto.BinaryToTextEncoding) => any;
/**
 * 计算文件的哈希值
 * @param path 文件路径或文件可读流
 */
export declare const createFileHash: (path: string | Stream.Readable, type?: string, target?: Crypto.BinaryToTextEncoding) => Promise<string>;
export declare const getTimestamp: (datetime?: string) => number;
export declare const buildQueryString: (data: Record<string, any>, options?: Record<string, any>) => string;
export declare const parseQueryString: (data: string, options?: Record<string, any>) => Record<string, any>;
export declare const randomString: (len?: number) => string;
export declare const makeSignature: (params: Record<string, any>, key?: string, type?: string) => string;
export declare const isString: (data: any) => boolean;
export declare const isArray: (data: any) => boolean;
export declare const isNumber: (data: any) => boolean;
export declare const isObject: (data: any) => boolean;
export declare const isFunction: (data: any) => boolean;
export declare const isIpv4: (ip: string) => boolean;
export declare const isIpv6: (ip: string) => boolean;
export declare const isIp: (ip: string) => boolean;
export declare const inArray: (data: any, arr: any, strict?: boolean) => boolean;
/**
 * 类应用混入方法
 * @param derivedCtor 目标类
 * @param constructors 混入类列表
 */
export declare const applyMixins: (derivedCtor: any, constructors: any[]) => void;
/**
 * 去除字符串左右的符号
 * @param str 原字符串
 * @param chars 要去除的符号，正则字符串，默认空白符
 */
export declare const trim: (str: string, chars?: string) => string;
/**
 * 去除字符串左边的符号
 * @param str 原字符串
 * @param chars 要去除的符号，正则字符串，默认空白符
 */
export declare const ltrim: (str: string, chars?: string) => string;
/**
 * 去除字符串右边的符号
 * @param str 原字符串
 * @param chars 要去除的符号，正则字符串，默认空白符
 */
export declare const rtrim: (str: string, chars?: string) => string;
/**
 * 将单词首字母转成大写，'hello word' => 'Hello World'
 * @param str
 * @returns
 */
export declare const strUcwords: (str: string) => string;
/**
 * 将单词首字母转成小写，'Hello World' => 'hello word'
 * @param str
 * @returns
 */
export declare const strLcwords: (str: string) => string;
/**
 * 驼峰（首字母大写），'hello word' => 'HelloWorld'
 * @param value
 * @returns
 */
export declare const strStudly: (value: string) => string;
/**
 * 驼峰（首字母小写），'hello word' => 'helloWorld'
 * @param value
 * @returns
 */
export declare const strCamel: (value: string) => string;
/**
 * 蛇形（下划线分隔，全小写），'helloWorld' => 'hello_world'
 * @param value
 * @returns
 */
export declare const strSnake: (value: string) => string;
/**
 * 如果只有一个同名、同级节点，则不当作数组
 * @param obj
 * @returns
 */
export declare const singleItem: (obj: any) => any;
/**
 * 解析xml
 * @param xml
 * @returns
 */
export declare const parseXml: (xml: string) => Promise<Record<string, any>>;
/**
 * 构建xml
 * @param data 对象
 * @param rootName 根节点名，默认：'xml'
 * @returns
 */
export declare const buildXml: (data: Record<string, any>, rootName?: string) => string;
/**
 * 创建UserAgent
 * @param appends 可选，附加的字符串列表
 * @returns
 */
export declare const createUserAgent: (appends?: string[]) => string;
/**
 * 流转Buffer
 * @param stream 可读流
 */
export declare const streamToBuffer: (stream: Fs.ReadStream) => Promise<Buffer>;
/**
 * Buffer转流
 * @param buffer Buffer对象
 */
export declare const bufferToStream: (buffer: Buffer) => Stream.Duplex;