Promise.all = Promise.all || function () {
  var args = Array.prototype.slice.call(arguments.length === 1 && Array.isArray(arguments[0]) ? arguments[0] : arguments);

  return new Promise(function (resolve, reject) {
    if (args.length === 0) return resolve([]);
    var remaining = args.length;
    function res(i, val) {
      try {
        if (val && (typeof val === 'object' || typeof val === 'function')) {
          var then = val.then;
          if (typeof then === 'function') {
            then.call(val, function (val) { res(i, val) }, reject);
            return;
          }
        }
        args[i] = val;
        if (--remaining === 0) {
          resolve(args);
        }
      } catch (ex) {
        reject(ex);
      }
    }
    for (var i = 0; i < args.length; i++) {
      res(i, args[i]);
    }
  });
};

Promise.race = Promise.race || function (values) {
  return new Promise(function (resolve, reject) {
    for(var i = 0, len = values.length; i < len; i++) {
      values[i].then(resolve, reject);
    }
  });
};