Commands should always return a promise.

The way subcommands are implemented right now prevent you from having a return value for ?command, instead, we define a default subcommand that will be executed when ?command is run.

Your execute function for the main command must look like this:

public execute() {
	return Promise.resolve();
}

Subcommands can be added like so: First define the subcommands in the parent command constructor

this.commands = [
  { name: 'list',   desc: 'List the songs in the music queue.',  usage: 'list',   cooldown: 5000, default: true },
  { name: 'remove', desc: 'Remove a song from the music queue.', usage: 'remove', cooldown: 2000 },
];

Note that the list subcommand is marked as the default. So when the parent command is ran without any subcommands, that subcommand will be executed.

Afterwards, the default command handler will look into that array and match a function name with the subcommand name.

So for example, for the list subcommand, we would add a function on the parent command class with the same name as the subcommand:

async list({ message, args }) {
  //insert awesome command code here
}

async remove({ message, args }) {
  //insert awesome command code here
}

The arguments follow the same format as a non-subcommand.