helpers.js

const fs = require('fs');

function readFile(filePath) {
    return new Promise((resolve, reject) => {
        fs.readFile(filePath, (err, data) => {
            if (err) {
                reject(err);
            } else {
                resolve(data);
            }
        });
    });
}

function writeFile(filePath, data) {
    return new Promise((resolve, reject) => {
        fs.writeFile(filePath, data, (err) => {
            if (err) {
                reject(err);
            } else {
                resolve();
            }
        });
    });
}

function checkFileExists(filePath) {
    return new Promise((resolve, reject) => {
        fs.access(filePath, (err) => {
            if (err) {
                resolve(false);
            } else {
                resolve(true);
            }
        });
    });
}
module.exports = { readFile, writeFile, checkFileExists };