I'm trying to replace a string, but when i try to do it on a file, it does not work. Or only the last file will work.

Main Code (inside a class method):

const funcs = fs.readdirSync(path.join(__dirname, "../funcs")).filter(file => file.endsWith('.js'));
        
this.functions = this.code.split("$");

const functions = this.functions

for (const func of funcs) {
    for (let x = functions.length - 1; x > 0; x--) {
         let i = 0;
         const res = await require(`../funcs/${func}`)(client, this.code.toString(), this._author);

         console.log(x);
         console.log(res);
         console.log(functions);

         return res;
         i++;
    }
}

ping.js:

const ping = (client, code, author) => {
    const result = code.split("$[ping]").join(client.ws.ping)

   return result;
}

module.exports = ping;

messageAuthorTag.js:

const Util = require('../utils/util');

const messageAuthorTag = (client, code, author) => {
    if (code === null) return;
    
    const res = code.split("$[message.author.tag]").join(`${author.tag}`);

    return res;
}

module.exports = messageAuthorTag;

Using it : "ping: $[ping] author tag: $[message.author.tag]"

Output: ping: $[ping] author tag: Example#0001