Discord Mention Prefix

Some users may wish for their bot to reply in Discord whenever their bot is "mentioned" using the @username syntax. To achieve this, add the router.set() call inside the Discord library "ready" event, and use the client ID to set "<@client-id>" as the prefix.

client.on('ready', () => {
  // Set the router prefix to the ID of the bot.
  router.set('prefix', [`<@${client.id}>`])
});

router
  .command('ping', ({ message }) => {
    message.channel.send('pong!')
  })