module.exports = function (TAPIC, state, _ws, _getSubBadgeUrl, _pingAPI, _getJSON) {
  /**
  * Joins a new channel. If you were already in a channel, this exits you from that channel first, then joins the new one.
  * @param  {string} channel The channel name, with or without the #.
  * @param  {function} callback Optional callback that's triggered after the Twitch API has been polled for the first time after joining.
  * @function joinChannel
  */
  TAPIC.joinChannel = function (channel, callback) {
    if (typeof channel != 'string') {
      return console.error('Invalid parameters. Usage: TAPIC.joinChannel(channel);');
    }
    if (!_ws) {
      return console.error('Tapic not setup.');
    }

    if (state.channel) _ws.send('PART #' + state.channel);

    _getJSON(
      'https://api.twitch.tv/kraken/users',
      '&login=' + encodeURIComponent(channel),
      setState
    );

    function setState(res) {
      state.channel_id = res.users[0]._id;
      state.channel = channel.replace('#', '');
      state.online = false;
      state.game = '';
      state.status = '';
      state.followerCount = '';
      state.totalViewCount = '';
      state.partner = '';
      state.currentViewCount = '';
      state.fps = '';
      state.videoHeight = '';
      state.delay = '';
      state.subBadgeUrl = '';
      state.chatters = {};
      state.followers = [];
      state.createdAt = '';
      state.logo = '';
      state.videoBanner = '';
      state.profileBanner = '';
      state.userMod = '';
      state.userSub = '';
      state.userTurbo = '';
      state.userType = '';

      _ws.send('JOIN #' + state.channel);

      _getSubBadgeUrl();
      if (typeof callback == 'function') {
        _pingAPI(callback);
      } else {
        _pingAPI();
      }
    }


  };
};

@@ -533,16 +533,46 @@
 'string'
+ && typeof channel != 'number'
 ) %7B%0A    

Update tapic.fn.joinChannel.js