get difference of 2 objects

difference.js

function difference(object, base) {
  function changes(object, base) {
    return _.transform(object, function (result, value, key) {
      if (!_.isEqual(value, base[key])) {
        result[key] =
          _.isObject(value) && _.isObject(base[key])
            ? changes(value, base[key])
            : value;
      }
    });
  }
  return changes(object, base);
}