ali.regenerator/lib/util.js

Source transformer enabling ECMAScript 6 generator functions (yield) in JavaScript-of-today (ES5)

/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * https://raw.github.com/facebook/regenerator/master/LICENSE file. An
 * additional grant of patent rights can be found in the PATENTS file in
 * the same directory.
 */

var hasOwn = Object.prototype.hasOwnProperty;

exports.defaults = function(obj) {
  var len = arguments.length;
  var extension;

  for (var i = 1; i < len; ++i) {
    if ((extension = arguments[i])) {
      for (var key in extension) {
        if (hasOwn.call(extension, key) && !hasOwn.call(obj, key)) {
          obj[key] = extension[key];
        }
      }
    }
  }

  return obj;
};