解决vue-cli脚手架打包后vendor文件过大的问题

 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script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)
 },
 ]});