/**
 * 判断是否是函数
 * @param obj
 */
export declare const isFunction: (obj: any) => obj is Function;
/**
 * 判断是否是数组
 * @param obj
 */
export declare const isArr: (obj: any) => obj is any[];
/**
 * 判断是否是字符串
 * @param obj
 */
export declare const isString: (obj: any) => obj is string;
/**
 * 判断是否是数字
 * @param obj
 */
export declare const isNumber: (obj: any) => obj is number;
/**
 * 判断是否是undefined
 * @param obj
 */
export declare const isUndefined: (obj: any) => obj is undefined;
/**
 * 判断是否是boolean
 * @param obj
 */
export declare const isBoolean: (obj: any) => obj is boolean;
/**
 * 判断是否是json字符串
 * @param v
 */
export declare const isJson: (v: any) => boolean;
/**
 * @Title: 判断是否为对象
 * @Describe:
 * @Author: Wzw
 * @param {any} obj
 */
export declare const isPlainObject: (obj: any) => boolean;