shuffle.js

function Node(value) {
  this._ = value;
  this.next = null;
}

export default function(array) {
  var i,
      n = (array = array.slice()).length,
      head = null,
      node = head;

  while (n) {
    var next = new Node(array[n - 1]);
    if (node) node = node.next = next;
    else node = head = next;
    array[i] = array[--n];
  }

  return {
    head: head,
    tail: node
  };
}