slash-handler v1.1.0

Setup

replace your message event in the main file with

cmdmap = slashHandler.init(bot, "token");

bot.on('interactionCreate', async interaction => {
	if (!interaction.isCommand()) return;
	const args = interaction.options.getString('args') || "";
	interaction.channel = await interaction.member.guild.channels.fetch(interaction.channelId);
	interaction.guild = interaction.member.guild;
	interaction.channel.send = (data) => interaction.reply(data);
	try {
		await cmdmap[interaction.commandName](interaction, args.split(/ +/g));
	} catch (DiscordAPIError) {
		
	}
});

Keep in mind that in sending messages you must use v13 slash command syntax