SOURCE

var Main = {
    data() {
      return {
       tableData: []
      }
    },
    methods: {
      
    }
  };
var Ctor = Vue.extend(Main)
new Ctor().$mount('#app')

<script src="//unpkg.com/vue/dist/vue.js"></script>
<script src="//unpkg.com/element-ui@2.4.6/lib/index.js"></script>
<div id="app">
<el-table :data="tableData">
  <el-table-column prop="id"></el-table-column>
</el-table>
</div>

@import url("//unpkg.com/element-ui@2.4.6/lib/theme-chalk/index.css");