text: 'use strict';
  
  const LinkedList = require('./linked-list.js');
  
  let list = new LinkedList();
  //list.append(1, 2, 3).append(4);
  //list.append(4, 5, 6).prepend(1, 2, 3);
  //list.append(1, 4, 5).insert(1, 2, 3);
  
  list.append(1, 2, 3, 4, 5, 6);
  console.log(list.at(2).data); // 3
  
  list.at(2, 'gosho');
  console.log(list.at(2).data); // gosho
  
  
  const removed = list.append(1, 2, 3, 4, 5).removeAt(1);
  console.log(removed.data);
  
  
  console.log(list.toString());