code: function filterByKeys(keys, values) {
    var filtered = {};
  
    forEach(keys, function (name) {
      filtered[name] = values[name];
    });
    return filtered;
  }
docs: Returns the subset of an object, based on a list of keys.
  
  @param {Array} keys
  @param {Object} values
  @return {Boolean} Returns a subset of `values`.