const fibonacci = function (member) { let indexNo = parseInt(member) - 1; if (indexNo < 0) { return "OOPS"; } let fib = [1, 1]; function makeFib() { let lastGuy = fib[fib.length - 1]; let secondLast = fib[fib.length - 2]; let newGuy = lastGuy + secondLast; fib.push(newGuy); } while (fib.length <= indexNo) { makeFib(); } return fib[indexNo]; }; module.exports = fibonacci;