/**
 * 判断对象是否为空
 *
 * @param obj
 * isEmpty(null)
 * // => true
 *
 * isEmpty(undefined)
 * // => true
 *
 * isEmpty("")
 * // => true
 *
 * isEmpty(NaN)
 * // => true
 *
 * isEmpty(0)
 * // => false
 *
 * isEmpty([1])
 * // => false
 *
 * isEmpty({name:"123"})
 * // => false
 */
export declare const isEmpty: (obj: any) => boolean;
/**
 * 判断是否有值
 * 这个函数的结果就是对isEmpty取非
 */
export declare const isHaveRealValue: (value: any) => boolean;
export declare const isValidIP: (ip: string) => boolean;
export declare const isIp: (ip: string) => boolean;
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