code: function runRejectableQueue(queue) {
    for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
      args[_key - 1] = arguments[_key];
    }
  
    return new _Promise(function (resolve, reject) {
      var step = function step(index) {
        if (index >= queue.length) {
          resolve();
          return;
        }
        var result = isFunction(queue[index]) ? queue[index].apply(queue, _toConsumableArray(args)) : queue[index];
        if (result === false) return reject('stop');
        return _Promise.resolve(result).then(function () {
          return step(index + 1);
        }).catch(function (err) {
          return reject(err || 'stop');
        });
      };
      step(0);
    });
  }
docs: run a queue one by one.If include function reject or return false it will stop
  @param  {Array} queue the queue which we want to run one by one
  @return {Promise}    tell us whether a queue run finished