function overrideObject(objOld, objNew) {

  var objCurrent = Object.assign({}, objOld);

  for (var i in objOld) {
    if (typeof objNew[i] === 'undefined')
      continue;
    else if (typeof objCurrent[i] === 'object' && typeof objNew[i] === 'object')
      objCurrent[i] = overrideObject(objCurrent[i], objNew[i]);
    else
      objCurrent[i] = objNew[i];
  }
  return objCurrent;
}