解决vue-cli脚手架打包后vendor文件过大的问题

 <  src="https://unpkg.com/vue@2.5.2/dist/vue.js"></ >
 <  src="https://unpkg.com/vue-router@3.0.1/dist/vue-router.js"></ >
 <  src="https://unpkg.com/mint-ui@2.2.13/lib/index.js"></ >
 <  src="https://unpkg.com/element-ui@2.3.9/lib/index.js"></ >
 <  src="https://unpkg.com/axios@0.18.0/dist/axios.min.js"></ >

 externals:{
 'vue':'Vue',
 'element-ui':'ELEMENT',
 'mint-ui':'MINT',
 'axios':'axios',
 'vue-router':'VueRouter',
 }, 

export default new VueRouter({//这个为什么用VueRouter 是通过 标签引入的
 mode: 'history',
 routes: [
 {
  path: '/',
  redirect: '/master/closestore/today'
 },

 {
  path: '/master/closestore/today',
  name: 'CloseingCount',
   component: resolve => require(['@/components/ClosingCount'], resolve)
 },
 ]});