/**
 * 中划线转小驼峰
 * @param str - 字符串
 * @returns 驼峰字符串
 * @example
 * ```ts
 * let result=camelize('user-info')
 * ```
 */
export declare const camelize: (str: string) => string;
/**
 * 驼峰转中划线
 * @param str - 字符串
 * @returns 中划线字符串
 * @example
 * ```ts
 * let result=kebabCase('userInfo')
 * ```
 */
export declare const kebabCase: (str: string) => string;
/**
 * 驼峰转下划线
 * @param str - 字符串
 * @returns 下划线字符串
 * @example
 * ```ts
 * let result=snakeCase('userInfo')
 * ```
 */
export declare const snakeCase: (str: string) => string;
/**
 * 首字母小写
 * @param str - 字符串
 * @returns 首字母小写的字符串
 * @example
 * ```ts
 * let result=lowerFirst('ABC')
 * ```
 */
export declare const lowerFirst: (str: string) => string;