const lpad = (str, width) => { let paddedStr = str; while (paddedStr.length < width) { paddedStr = ' ' + paddedStr; } return paddedStr; }; const rpad = (str, width) => { let paddedStr = str; while (paddedStr.length < width) { paddedStr = paddedStr + ' '; } return paddedStr; } module.exports = { lpad, rpad };