index.ts

import {Client, Collection, Message, TextChannel} from "discord.js";
import dotenv from "dotenv";
import {readdir} from "fs";
import config from "./config";

export interface runEvent {
    message: Message,
    client: Client,
    args: string[],
    dev: boolean
}

dotenv.config();

const dev = process.env.NODE_ENV === "dev",
    client = new Client(),
    commands: Collection<string[], (event: runEvent) => any> = new Collection();

readdir('./commands/', (err, allFiles) => {
    if (err) console.log(err);
    let files = allFiles.filter(f => f.split('.').pop() === (dev ? 'ts' : 'js'));
    if (files.length <= 0) console.log('No commands found!');
    else for(let file of files) {
        const props = require(`./commands/${file}`) as {names: string[], run: (event: runEvent) => any};
        commands.set(props.names, props.run);
    }
});

client.once("ready", () => {
   console.log(`Logged in as ${client.user.tag}`);
});

client.on("message", async message => {
    if(message.channel.type === "dm" || message.author.bot || !message.content.startsWith(config.prefix)) return;
    message.member = await message.guild.fetchMember(message.author);

    const args = message.content.split(/ +/);
    if(args.length < 1) return;
    const command = args.shift()!.toLowerCase().slice(config.prefix.length);
    const commandFile = commands.find((r, n) => n.includes(command));
    if(!commandFile) return;
    else commandFile({
        message,
        args,
        client,
        dev
    });
});

if(dev) {
    client.on('debug', (e) => {
        console.log(e);
    });
}

client.on('raw', (packet: { t: string; d: { channel_id: string; message_id: string; emoji: { id: string; name: string; }; user_id: string; }; }) => {
    if (!['MESSAGE_REACTION_ADD', 'MESSAGE_REACTION_REMOVE'].includes(packet.t)) return;
    const channel = client.channels.get(packet.d.channel_id) as TextChannel;
    if (channel.messages.has(packet.d.message_id)) return;
    channel.fetchMessage(packet.d.message_id).then(message => {
        const emoji = packet.d.emoji.id ? `${packet.d.emoji.name}:${packet.d.emoji.id}` : packet.d.emoji.name;
        const reaction = message.reactions.get(emoji);
        if (reaction) reaction.users.set(packet.d.user_id, client.users.get(packet.d.user_id)!);
        if (packet.t === 'MESSAGE_REACTION_ADD') {
            client.emit('messageReactionAdd', reaction, client.users.get(packet.d.user_id));
        }
        if (packet.t === 'MESSAGE_REACTION_REMOVE') {
            client.emit('messageReactionRemove', reaction, client.users.get(packet.d.user_id));
        }
    });
});

if(process.env.TOKEN) client.login(process.env.TOKEN);
else {
    console.log("Create a file called .env and put your bot's token in there.");
    process.exit(1);
}