export declare function omitStringByLength(value: string, limitLength: number): string;
/**
 * 判断是否含有中文字符
 * @param value
 */
export declare function isHaveChineseChars(value: string): boolean;
/**
 * 判断是否含有特殊字符
 * @param value
 */
export declare function isHaveSpecialChars(value: string): boolean;
/**
 * determine a string if have blank char.
 * ref : https://www.w3school.com.cn/jsref/jsref_regexp_whitespace_non.asp
 * https://stackoverflow.com/questions/17616624/detect-if-string-contains-any-spaces
 * @param value
 */
export declare function hasBlankChar(value: string): boolean;
/**
 * 判断一个东西是不是一个json
 * @param something
 */
export declare function isJSON(something: any): boolean;
/**
 * place the replaceString in parent center and let other char in parentString blank
 * @param parentString
 * @param replaceString
 */
export declare function replaceStringInCenter(parentString: string, replaceString: string): string;
/**
 * 检测传入的东西是否是合格的字符串，长度大于0且不为null
 * @param someString 需要检测的string
 */
export declare function checkString(someString: string | undefined | null): boolean | "";
/**
 * 带长度限制的字符串合格性检查
 * @param someString
 * @param minLength
 * @param maxLength
 */
export declare function checkStringWithLimit(someString: string, minLength: number, maxLength: number): boolean;
/**
 * 如果被检查的字符属于其中一种，那么是有效的
 * 一般用于判断搜索字符串是否合法（是否包含特殊字符）
 * @param value
 */
export declare function checkChCharLetterDigit(value: string): boolean;
export declare function hasEnglishChars(value: string): boolean;
/**
 * 10进制数组转换成16进制字符串
 * @param {*} arr
 */
export declare function bytes2HexString(arr: any[]): string;
/**
 * 将字符串转换成Uint8Array
 * @param {*} str
 */
export declare function str2Uint8Array(str: string): "" | Uint8Array;