/**
 * 递归提取属性
 * @param {object} data - 要提取属性的对象
 * @param {string} [prefix] - 用于嵌套对象属性的前缀
 * @returns {Array} - 提取后的属性数组
 */
export declare const extractProperties: (data: any, prefix?: string) => {
    name: string;
    type: string;
}[];
/**
 * 获取值的类型
 * @param {any} value - 要获取类型的值
 * @returns {string} - 值的类型
 */
export declare const getType: (value: any) => "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function" | "null" | "array" | "date";
/**
 * 检查字符串是否为有效日期
 * @param {string} dateStr - 要检查的字符串
 * @returns {boolean} - 是否为有效日期
 */
export declare const isValidDate: (dateStr: any) => boolean;