src/client.ts

import { Client, GatewayIntentBits, Collection, Partials } from 'discord.js';

export interface CustomClient extends Client {
	commands: Collection<string, any>;
	slashCommands: Collection<string, any>;
}

const client: CustomClient = new Client({
	intents: [
		GatewayIntentBits.Guilds,
		GatewayIntentBits.GuildMembers,
		GatewayIntentBits.GuildMessages,
		GatewayIntentBits.MessageContent,
		GatewayIntentBits.GuildMessageReactions,
		GatewayIntentBits.GuildMessageTyping,
		GatewayIntentBits.DirectMessages,
		GatewayIntentBits.DirectMessageReactions,
		GatewayIntentBits.DirectMessageTyping,
	],
	partials: [
		Partials.Message,
		Partials.Channel,
		Partials.Reaction,
		Partials.GuildMember,
		Partials.User,
	],
}) as CustomClient;

client.commands = new Collection<string, any>();
client.slashCommands = new Collection<string, any>();

export { client };