node.js read files from a directory

read-files-in-a-folder.js

//requiring path and fs modules
const path = require('path');
const fs = require('fs');

/**
 * Read contents of files inside a folder.
 * @param {*} folderName 
 * @param {*} rootDir 
 * 
 * @example : readFolder("data", __dirname)
 */
function readFolder(folderName, rootDir) {

    const dirPath = path.join(rootDir, folderName);
    //passsing directoryPath and callback function
    fs.readdir(dirPath, function (err, files) {
        //handling error
        if (err) {
            return console.log('Unable to scan directory: ' + err);
        }
        //list files
        files.forEach(function (file) {
            console.log(file);
        });
    });
}


module.exports = {
    readFolder: readFolder
}