title: Ember access variable inside Mixin
body: <pre><code>import Ember from 'ember';
  import myConst from '../utils/constants';
  
  export default Ember.Mixin.create(myConst, {
    getFieldId: function(productCode) {
          console.log(myConst.MY_METHODS.FIELD_ID); //Not able to access this
    }
  });
  </code></pre>
  
  <p>My constants.js looks like</p>
  
  <pre><code>var myConst = {};
  
  myConst.MY_METHODS = {
          FIELD_ID: "fieldId"
  };
  
  export default myConst;
  </code></pre>
  
  <p>I am unable to access myConst inside the mixin. What am I doing wrong ?</p>