SOURCE

const tpl = `
<div>
  <div>这里是Nunjucks渲染的：{{ username }}</div>
  {% verbatim %}
  <div>这里是vue渲染的：{{ username }}</div>
  {% endverbatim %}
</div>
`;
const htmlStr = nunjucks.renderString(tpl, { username: 'Hello Nunjucks' });


var app = new Vue({
  el: '#test',
  template: htmlStr,
  data: {
    username: 'Hello Vue!'
  }
})

<div id="test"></div>
<script src="https://cdn.bootcss.com/nunjucks/3.0.1/nunjucks.js"></script>
<script src="https://cdn.bootcss.com/vue/2.5.17/vue.js"></script>