title: Babel 6.0.20 Modules feature not work in IE8
body: <p>I am trying to export a es6 module in <code>header.js</code>:</p>
  
  <pre><code>export default {
      setHeaderHighlight: function (index) {
          // do somethings
      }
  };
  </code></pre>
  
  <p>And import it in <code>index.js</code>:</p>
  
  <pre><code>import header from "./header.js"
  
  $(function () {
      header.setHeaderHighlight(0);
  });
  </code></pre>
  
  <p>Then transformation comes out in <code>index.bundle.js</code>:</p>
  
  <pre><code>var _header = __webpack_require__(129);
  
  var _header2 = _interopRequireDefault(_header);
  
  function _interopRequireDefault(obj) {
      return obj &amp;&amp; obj.__esModule ? obj : { default: obj }; // crash here
  }
  </code></pre>
  
  <p>So here is the problem, ie8 will rise a <code>Expected identifier</code> Exception at <code>{ default: obj }</code>, but everythings is ok >=ie9.</p>
  
  <p>Is there something i can do with this?</p>