Objectify Entity to Plain JS Object in Rhino

ofyToObject.js

const OBJECT_CLASS = (new java.lang.Object()).getClass();

var ofyToObject = exports.ofyToObject = function(ofyObject) {
   let obj = {};
   let beanInfo = java.beans.Introspector.getBeanInfo(ofyObject.getClass(), OBJECT_CLASS);
   let properties = beanInfo.getPropertyDescriptors();

   for (let i = 0; i < properties.length; i++) {
      let pd = properties[i];
      let getter = pd.getReadMethod();
      obj[pd.getName()] = getter.invoke(ofyObject);
   }

   return obj;
};