import { isArray, isObject, isString } from '@vue/shared'
import { isNil } from '../libs/lodash'

export {
  isArray,
  isFunction,
  isObject,
  isString,
  isDate,
  isPromise,
  isSymbol,
} from '@vue/shared'
export { isBoolean, isNumber } from '../libs/lodash'

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

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

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

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

export const isStringNumber = (val: string): boolean => {
  if (!isString(val)) return false
  return !Number.isNaN(Number(val))
}