handlers.js

const { readdir } = require("fs");

await readdir("./events", (err, files) => {
    if(err) {
        return this.client.logger.error(err);
    }

    else if(files.length <= 0) {
        return this.client.logger.warn("Veuillez mettre des events dans le dossier !");
    };

    const events = files.filter((ext) => ext.split(".").pop() === "js");

    this.client.logger.info(`J'ai chargé ${events.length} événements !`);

    events.forEach((evt) => {
        const event = new(require(`../events/${evt}`))(this.client),
            event_name = evt.split(".")[0];

        this.client.on(event_name, (...args) => event.run(...args));

        delete require.cache[require.resolve(`../events/${evt}`)];
    });
});

await readdir("./commands", (err, files) => {
    if(err) {
        return this.client.logger.error(err);
    }

    else if(files.length <= 0) {
        return this.client.logger.warn("Veuillez mettre des sous dossiers dans le dossier des commandes !");
    };

    const categories = [];

    files.forEach((subfolder) => {
        if(!subfolder.includes(".")) categories.push(subfolder);
    });

    categories.forEach(async(folder) => {
        await readdir(`./commands/${folder}`, (err0, files0) => {
            if(err0) {
                return this.client.logger.error(err);
            }

            else if(files0.length <= 0) {
                return this.client.logger.warn(`Veuillez mettre des commandes dans le dossier "./commands/${folder}" !`);
            };

            const commands = files0.filter((ext) => ext.split(".").pop() === "js");

            commands.forEach((command) => {
                const cmd = new(require(`../commands/${folder}/${command}`))(this.client);

                this.client.commands.set(cmd.name, cmd);

                cmd.aliases.forEach((alias) => {
                    this.client.aliases.set(alias, cmd.name);
                });

                delete require.cache[require.resolve(`../commands/${folder}/${command}`)];
             });
        });
    });
});