simple coffea irc bot

bot.js

var client = require('coffea')({
  host: 'chat.freenode.net',
  nick: 'coffea-testbot',
  channels: ['#caffeinery']
});
client.on('command', function (event) {
  switch (event.cmd) {
    
    case 'ping':
      event.reply('pong');
      break;

    case 'join':
      if (args.length < 1) {
        event.reply('not enough arguments: please specify a channel');
        break;
      }

      event.reply('joining channel');
      client.join(args[0], event.network, function () {
        event.reply('joined channel');
      });
      break;

  }

  console.log(event.channel.name, event.user.nick, event.message);
});