export declare function is(val: unknown, type: string): boolean;
/**
 * 判断不是undefined
 * @param val  -内容
 * @example
 * ```ts
 * let result= isDef('test')
 * ```
 */
export declare function isDef<T = unknown>(val?: T): val is T;
/**
 * 判断是undefined
 * @param val  -内容
 * @example
 * ```ts
 * let result= isUnDef('test')
 * ```
 */
export declare function isUnDef<T = unknown>(val?: T): val is T;
/**
 * 判断是Object,包含数组
 * @param val  -内容
 * @example
 * ```ts
 * let result= isObject({name:1})
 * ```
 */
export declare function isObject(val: any): val is Record<any, any>;
/**
 * 判断是原始Object,不包含数组
 * @param val  -内容
 * @example
 * ```ts
 * let result= isPlainObject({name:1})
 * ```
 */
export declare function isPlainObject(val: unknown): val is Record<string, unknown>;
/**
 * 检测当前类型是否是空对象
 * @param obj - 检测当前类型
 * @returns 如果为空的对象则返回true、否则返回false
 */
export declare const isEmptyObject: (obj: any) => boolean;
/**
 * 检测当前类型是否空(空string|undefined|null)
 * @param val - 检测当前类型
 * @returns 如果为空的对象则返回true、否则返回false
 */
export declare const isEmptyValue: (val: string | number | null | undefined) => boolean;
/**
 * 判断是空,包括空数组,空对象,空Map
 * @param val  -内容
 * @example
 * ```ts
 * let result= isEmpty({name:1})
 * ```
 */
export declare function isEmpty<T = unknown>(val: T): val is T;
/**
 * 判断是日期对象
 * @param val  -内容
 * @example
 * ```ts
 * let result= isDate(new Date())
 * ```
 */
export declare function isDate(val: unknown): val is Date;
/**
 * 判断是否为null
 * @param val - 任意值
 * @returns  boolean
 */
export declare function isNull(val: unknown): val is null;
/**
 * 判断是null和undefined
 * @param val  -内容
 * @example
 * ```ts
 * let result= isNullAndUnDef('')
 * ```
 */
export declare function isNullAndUnDef(val: unknown): val is null | undefined;
/**
 * 判断是null或undefined
 * @param val  -内容
 * @example
 * ```ts
 * let result= isNullOrUnDef('')
 * ```
 */
export declare function isNullOrUnDef(val: unknown): val is null | undefined;
/**
 * 是否是number
 * @param val  -内容
 * @example
 * ```ts
 * let result= isNumber('test')
 * ```
 */
export declare function isNumber(val: unknown): val is number;
/**
 * 是否是Promise
 * @param val  -内容
 * @example
 * ```ts
 * let result= isPromise('test')
 * ```
 */
export declare function isPromise<T = any>(val: any): val is Promise<T>;
export declare function isString(val: unknown): val is string;
/**
 * 是否是函数
 * @param val  -内容
 * @example
 * ```ts
 * let result= isFunction('test')
 * ```
 */
export declare function isFunction(val: unknown): val is Function;
export declare function isBoolean(val: unknown): val is boolean;
/**
 * 是否是正则
 * @param val  -内容
 * @example
 * ```ts
 * let result= isRegExp(window)
 * ```
 */
export declare function isRegExp(val: unknown): val is RegExp;
/**
 * 是否是数组
 * @param val  -内容
 * @example
 * ```ts
 * let result= isArray(window)
 * ```
 */
export declare function isArray(val: any): val is Array<any>;
/**
 * 是否是Window
 * @param val  -内容
 * @example
 * ```ts
 * let result= isWindow(window)
 * ```
 */
export declare function isWindow(val: any): val is Window;
export declare function isElement(val: unknown): val is Element;
/**
 * 是否是Map
 * @param val  -内容
 * @example
 * ```ts
 * let result= isMap(window)
 * ```
 */
export declare function isMap(val: unknown): val is Map<any, any>;
export declare function isSet(val: unknown): val is Set<any>;
export declare const isServer: boolean;
export declare const isClient: boolean;
/**
 * 是否是isUrl
 * @param val  -内容
 * @example
 * ```ts
 * let result= isUrl('http://www.baidu.com')
 * ```
 */
export declare function isUrl(path: string): boolean;
/**
 * 判断是否为整数
 * @param val - 任意值
 * @returns 如果是整数则返回true，否则返回false
 */
export declare function isInteger(val: unknown): boolean;
/**
 * 判断是否为数字（整数或浮点数）
 * @param val - 任意值
 * @returns 如果是数字则返回true，否则返回false
 */
export declare function isNumeric(val: unknown): boolean;