var Vue = {
data() {
return {
};
},
methods: {
},
};
var Ctor = Vue.extend(Vue)
new Ctor().$mount('#app')
<script src="//unpkg.com/vue@2.6.14/dist/vue.js"></script> <script src="//unpkg.com/element-ui@2.15.7/lib/index.js"></script> <div id="app"></div>