index.js

function reverseLinkedList(linkedList) {
  let current = linkedList.getFirst();
  let prev = null;
  let keeper = null;
  do {
    keeper = current.next;
    current.next = prev;
    prev = current;
    current = keeper;
  } while (current.next != null);

  return current;
}
module.exports = {
  reverseLinkedList,
};