discord seflbot that does magic

detidebot.js

const Eris = require('eris');
const bot = new Eris("TOKEN");

const detideReplace = {
    '(': ')',
    ')': '(',
    '{': '}',
    '}': '{',
    '[': ']',
    ']': '[',
    '<': '>',
    '>': '<'
}

bot.on('ready', () => {
    console.log('Ready!');
});

bot.on('messageCreate', msg => {
    if (!msg.author || msg.author.id !== bot.user.id) return; // author is occasionally undefined. valve pls fix
    
    if (msg.content.includes('detide')) {
        let detide = msg.content.split('detide');
        let og = detide[0];
        detide.splice(0, 1);
        let reverse = detide.join('detide').split('').reverse();
        reverse.forEach((sa, me) => {
            reverse[me] = detideReplace[sa] ? detideReplace[sa] : sa;
        });
        reverse = reverse.join('');
        bot.editMessage(msg.channel.id, msg.id, `${og}\u202e${reverse}\u200b`);
    }
});

bot.connect();