text: function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
      try {
          var info = gen[key](arg);
          var value = info.value;
      } catch (error) {
          reject(error);
          return;
      }
      if (info.done) {
          resolve(value);
      } else {
          Promise.resolve(value).then(_next, _throw);
      }
  }
  function _asyncToGenerator(fn) {
      return function() {
          var self = this, args = arguments;
          return new Promise(function(resolve, reject) {
              var gen = fn.apply(self, args);
              function _next(value) {
                  asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
              }
              function _throw(err) {
                  asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
              }
              _next(undefined);
          });
      };
  }
  function _await() {
      return _await1.apply(this, arguments);
  }
  function _await1() {
      _await1 = // @target: ES5
      // @lib: es5,es2015.promise
      // @noEmitHelpers: true
      _asyncToGenerator(function*() {
      });
      return _await1.apply(this, arguments);
  }
  