if (msg.content.startsWith(".del")) {
  let args = msg.content.split(" ").slice(1);
  let messagecount = parseInt(args[0]) || 1;
  var deletedMessages = -1;
  msg.channel.fetchMessages({
      limit: Math.min(messagecount + 1, 100, 200)
    })
    .then(messages => {
      messages.forEach(m => {
        m.delete().catch(console.error);
        deletedMessages++;
      });
    }).then(() => {
      if (deletedMessages === -1) deletedMessages = 0;
      msg.channel.send(`${deletedMessages} messages **deleted.**`)
        .then(m => m.delete(5000));
    }).catch(console.error);
}