Just saving this for myself... creating a linked list from a list of nodes.

LinkedListNode.js

function LinkedListNode(v) {
  this.val = v;
  this.next = null
}

LinkedListNode.prototype.print = function() {
  let node = this;
  while (node) {
    process.stdout.write(`${node.val} -> `)
    node = node.next
  }
  console.log('')
}

const nodes = Array.from(Array(10).keys()).map(i => new LinkedListNode(i))
for (let i = 1; i < nodes.length; i++) {
  nodes[i - 1].next = nodes[i]
}
nodes[0].print()