title: Convert ES6 to ES2015 using babel and laravel-mix
body: <p>I have ES6 JavaScript code in my Vue components. In order to support IE 11 I need to convert it to ES5 code using babel and laravel-mix. How do I do that?</p>
  
  <p>Here is my webpack.mix.js file.</p>
  
  <pre><code>let mix = require('laravel-mix');
  
  mix.js('resources/assets/js/app.js', 'public/js')
  .js('resources/assets/js/admin-app.js', 'public/js')
  </code></pre>