SOURCE

var Main = {
  data() {
    return {
      lib: 'vue'
    }
  },
  created() {
		this.lib = 'react'
    this.lib = 'angular'
	},
  render(h) {
    console.log('render exec, lib is ' + this.lib)
    return h('div', this.lib)
  },
  mounted() {
    
  }
}
var Ctor = Vue.extend(Main)
new Ctor().$mount('#app')

<script src="//unpkg.com/vue/dist/vue.js"></script>
<div id="app">
<template>

</template>
</div>