gistfile1.js

var parseResponseCookies = function (response) {
  var Cookie = function (cookieString) {
    var fields = cookieString.split(/; ?/).map(function (item) {
      return item.split('=');
    });

    var metadata = fields.reduce(function (prev, curr) {
      prev[curr[0]] = curr[1];
      return prev;
    }, {});

    this.name  = fields[0][0];
    this.value = fields[0][1];

    this.path   = metadata['path'];
    this.domain = metadata['domain'];

    this.isDeleted = (this.value === '');

    return this;
  };

  return response.headers['set-cookie'].reduce(function (prev, curr) {
    var cookie = new Cookie(curr);
    prev[cookie.name] = cookie;

    return prev;
  }, {});
};