mall-web-ssr/plugins/element-ui.js

import Vue from 'vue'
import { Breadcrumb, BreadcrumbItem, Tree, Pagination, Upload, Dialog } from 'element-ui'

Vue.use(Breadcrumb)
Vue.use(BreadcrumbItem)
Vue.use(Tree)
Vue.use(Pagination)
Vue.use(Upload)
Vue.use(Dialog)