import {isArray, isObject} from '@vue/shared'
import {isNil} from 'lodash-unified'

export {
    isArray,
    isFunction,
    isObject,
    isString,
    isDate,
    isPromise,
    isSymbol,
} from '@vue/shared'
export {isBoolean, isNumber} from '@vueuse/core'
export {isVNode} from 'vue'

// 是否Undefined
export const isUndefined = (val: any): val is undefined => val === undefined

// 是否为null或undefined
export const isPropAbsent = (prop: unknown): prop is null | undefined => {
    return isNil(prop)
}

// 是否为空
export const isEmpty = (val: unknown) =>
    (!val && val !== 0) ||
    (isArray(val) && val.length === 0) ||
    (isObject(val) && !Object.keys(val).length)

// 是否为元素
export const isElement = (e: unknown): e is Element => {
    if (typeof Element === 'undefined') return false
    return e instanceof Element
}