Sort object by key

sort-object.js

/**
 * Sort object by key
 * 
 * @param unordered object
 * @returns {Object} ordered object by key
 */
function sortObject(unordered) {
  var ordered = {};
  Object.keys(unordered).sort().forEach(function (key) {
    ordered[key] = unordered[key];
  });

  return ordered;
}