/**
 * 克隆一个类实例，保留其原型链和属性描述符
 * @param source 要克隆的对象
 * @returns 克隆后的对象
 */
declare function cloneClass<T>(source: T): T;
declare const _default: {
    copy: (source: any, options?: {
        fields?: string[] | undefined;
        camel?: boolean | undefined;
        pure?: boolean | undefined;
        ignoreNull?: boolean | undefined;
        ignoreZero?: boolean | undefined;
        ignoreEmptyArray?: boolean | undefined;
        ignoreEmptyString?: boolean | undefined;
    }) => any;
    clone: (source: any, weakMap?: WeakMap<object, any>) => any;
    cloneClass: typeof cloneClass;
};
export default _default;