Throttling

Throttling is like rate-limiting; it allows the command to be used only in a certain period—a cooldown of sorts. This feature is useful for commands that rely on API calls or commands that can be spammy to avoid a user overusing them.

First, grab a command file you want to throttle.

const { Command } = require('discord.js-commando');

module.exports = class MeowCommand extends Command {
	constructor(client) {
		super(client, {
			name: 'meow',
			group: 'first',
			memberName: 'meow',
			description: 'Replies with a meow, kitty cat.',
		});
	}

	run(message) {
		return message.say('Meow!');
	}
};

Add the throttling property to the command. throttling is an object, which contains two things:

• usages is the number of times someone can use the command in the given time.
• duration is the amount of time the cooldown lasts, in seconds.

Make it have two usages allowed in ten seconds.

module.exports = class MeowCommand extends Command {
	constructor(client) {
		super(client, {
			// ...
			throttling: {
				usages: 2,
				duration: 10,
			},
		});
	}
};

The command now has a cooldown. If a user tries to use the meow command more than two times in ten seconds, it will not allow them to use it until the ten seconds have fully passed. While useless in a command like meow, this can be very useful for other, heavier commands you don't want others to abuse.