SOURCE

Vue.component('mt-button', {
  props: ['text'],
  template: '#mtButton'
});
var vm = new Vue({
  el: '#app',
  methods: {
    handleClick: function() {
      alert('handleClick')
    }
  }
});

<template id="mtButton">
  <span>{{text}}</span>
</template>
<div id="app">
  <mt-button @click.native="handleClick"></mt-button>
</div>
<!-- <script src="https://unpkg.com/mint-ui/lib/index.js"></script> -->