Display help menu via tagging the bot

const botId = '723819104045105172'

  client.on('message', (message) => {
    // If your bot is tagged at all:
    for (const user of message.mentions.users) {
      if (user.id === botId) {
        // TODO: Send help command via message.channel.send
        break
      }
    }

    // OR if you want to see if the message is ONLY "@YourBot" and nothing else:
    if (message.content === `<@!${botId}>`) {
      // TODO: Send your help command via message.channel.send
    }
  })