判断是否为Null

一、源码参考

import getTypeOf from './getTypeOf'

export const isNull = (target) => {
  return target === null && getTypeOf(target) === 'null'
}

二、示例

import { isNull } from 'vivace-tool'
console.log(isNull(null)) // true
console.log(isNull({})) // false