how to clear messages in discord code example

Example 1: discord delete messag

message.delete({timeout: 5000 , reason: "system"})

Example 2: discord delete message

"create a variable called id"
var id
"then inside your client message statement change id ->  id = message.id"
client.on('message', message => {
  id = message.id
});
"inside your command type  message.fetch(id).then(msg => msg.delete());"
  if (message.content === !test)
      message.fetch(id).then(msg => msg.delete());      
}});

Example 3: discord bot clear messages

switch(args[0]){
case 'clear':
        if(!args[1]) return message.reply('Error please define second argument')
            message.channel.bulkDelete(args[1]);
        break;  
}