folderTraversalWithoutRecursion.js

"use strict"

var fs = require("fs");
var path = require("path");

var traversal = root => {
    var files = [];
    var folders = [root];

    while (folders.length != 0) {

        var folder = folders.shift();
        var fileNames = fs.readdirSync(folder);

        for (var fileName of fileNames) {
            var filePath = path.resolve(folder, fileName);
            if (fs.statSync(filePath).isDirectory()) {
                folders.push(filePath);
            } else {
                files.push(filePath);
            };
        };
    };
    return files;
};

var main = module.exports.main = () => traversal(process.cwd());

if (require.main === module) main();