Commande vérification de permissions

const Discord = require(`discord.js`);
const client = new Discord.Client();

const token = `TOKEN`;
const prefix = `+`;
const permissionslist = ['ADMINISTRATOR', 'CREATE_INSTANT_INVITE', 'KICK_MEMBERS', 'BAN_MEMBERS', 'MANAGE_CHANNELS', 'MANAGE_GUILD', 'ADD_REACTIONS', 'VIEW_AUDIT_LOG', 'PRIORITY_SPEAKER', 'STREAM', 'VIEW_CHANNEL', 'SEND_MESSAGES', 'SEND_TTS_MESSAGES', 'MANAGE_MESSAGES', 'EMBED_LINKS', 'ATTACH_FILES', 'READ_MESSAGE_HISTORY', 'MENTION_EVERYONE', 'USE_EXTERNAL_EMOJIS', 'VIEW_GUILD_INSIGHTS', 'CONNECT', 'SPEAK', 'MUTE_MEMBERS', 'DEAFEN_MEMBERS', 'MOVE_MEMBERS', 'USE_VAD', 'CHANGE_NICKNAME', 'MANAGE_NICKNAMES', 'MANAGE_ROLES', 'MANAGE_WEBHOOKS', 'MANAGE_EMOJIS'];

client.on(`ready`, () => {
    console.log(`${client.user.username} est en ligne !`);
});

client.on(`message`, async (message) => {
    if (message.author.bot) return;
    if (message.content.indexOf(prefix) !== 0) return;
    const args = message.content.slice(prefix.length).trim().split(/ +/g);
    const command = args.shift().toLowerCase();
    if (command == "perms") {
        let target = message.mentions.members.first() || message.member;
        if (!args[0] || !permissionslist.some(permission => args[0].toLocaleUpperCase().includes(permission))) {
            const embed = new Discord.MessageEmbed()
                .setColor(`#0099FF`)
                .setAuthor(message.author.username, message.author.displayAvatarURL({
                    dynamic: true
                }))
                .setTitle(`Vous devez spécifier une permission valide !`)
                .setTimestamp()
                .setFooter(client.user.username, client.user.displayAvatarURL({
                    dynamic: true
                }));
            return message.channel.send(embed);
        } else {
            if (!target.hasPermission(args[0].toLocaleUpperCase())) {
                const embed = new Discord.MessageEmbed()
                    .setColor(`#0099FF`)
                    .setAuthor(message.author.username, message.author.displayAvatarURL({
                        dynamic: true
                    }))
                    .setTitle(`${target.displayName} n'as pas les permissions !`)
                    .setTimestamp()
                    .setFooter(client.user.username, client.user.displayAvatarURL({
                        dynamic: true
                    }));
                return message.channel.send(embed);
            } else if (target.hasPermission(args[0].toLocaleUpperCase())) {
                const embed = new Discord.MessageEmbed()
                    .setColor(`#0099FF`)
                    .setAuthor(message.author.username, message.author.displayAvatarURL({
                        dynamic: true
                    }))
                    .setTitle(`${target.displayName} a les permissions !`)
                    .setTimestamp()
                    .setFooter(client.user.username, client.user.displayAvatarURL({
                        dynamic: true
                    }));
                return message.channel.send(embed);
            };
        }
    } else if (command == "perms-help") {
        const embed = new Discord.MessageEmbed()
            .setColor(`#0099FF`)
            .setAuthor(message.author.username, message.author.displayAvatarURL({
                dynamic: true
            }))
            .addField(`❔ • __perms__`, `\`Affiche si un membre a une permission.\`\n__Utilisation:__ *[permission] [mention d'un membre ou rien]*\n**Liste des permissions:**\n\`${permissionslist.join(`, `)}\``)
            .setTimestamp()
            .setFooter(client.user.username, client.user.displayAvatarURL({
                dynamic: true
            }));
        return message.channel.send(embed);
    };
});

client.login(token);