Why is this command not working I am new to coding and would really appreciate some help I am simply trying to get a bot response time ping command to work this is not producing any errors anymore but it doesn't work either and as I am not getting any errors I am having difficulty discovering the problem on my own.

client.on('messageCreate', message => {
    if (message.channel.type != 'text' || message.author.bot)
      return;
  
    let command = message.content.split(' ')[0].slice(1);
    let args = message.content.replace('.' + command, '').trim();
  
    switch (command) {
      case 'ping': {
        message.channel.send('Pong! (~ ' + client.ping + 'ms)');
        break;
      }
  
  
      case 'uptime': {
        // client.uptime is in millseconds
        // this is just maths, I won't explain much of it
        // % is modulo, AKA the remainder of a division
        let days = Math.floor(client.uptime / 86400000);
        let hours = Math.floor(client.uptime / 3600000) % 24;
        let minutes = Math.floor(client.uptime / 60000) % 60;
        let seconds = Math.floor(client.uptime / 1000) % 60;
  
        message.channel.send(`__Uptime:__\n${days}d ${hours}h ${minutes}m ${seconds}s`);
        break;
      }
    }
  });