Element 通知组件 Notification 支持同类型的提示信息只弹出一次！！！

import { Notification } from 'element-ui'
const $notify = options => {
  return Notification({
    ...options,
    duration: 0
  })
}
['success', 'warning', 'info', 'error'].forEach(type => {
  $notify[type] = options => {
    if (typeof options === 'string') {
      options = {
        message: options,
        type: type,
        title: '提示',
        duration: 0
      }
    } else {
      options = Object.assign({
        title: '提示',
        type: type,
        duration: 0
      }, options)
    }
    return Notification(options)
  }
})
Notification.install = function (Vue) {
  Vue.prototype.$notify = $notify
  Vue.prototype.$notify.close = Notification.close
}
export default Notification

import Notify from '@/plugins/notify'
// ...
Vue.use(Notify)

export function setNotifyFlag(eventKey) {
  return Vue.ls.set(eventKey, true, 60 * 60 * 1000)
}
export function removeNotifyFlag(eventKey) {
  return Vue.ls.set(eventKey, false)
}
export function checkNotifyFlag(eventKey) {
  return Vue.ls.get(eventKey)
}

if (options.eventKey) {
  options.onClose = () => {
    removeNotifyFlag(options.eventKey)
  }
  if (!checkNotifyFlag(options.eventKey)) {
    setNotifyFlag(options.eventKey)
    return Notification(options)
  }
  return false
} else {
  return Notification(options)
}