/**
 * @description 首字母小写
 *
 * @param {string} str 传入一个字符串
 * @return {*}  {string} 返回一个新的首字母小写的字符串
 * @example toFirstUpper("abc") => abc toFirstUpper("ABC") => aBC
 */
declare const toFirstLower: (str: string) => string;
export default toFirstLower;