Remove duplciates from a sorted linked list

RemoveDuplicateValuesLinkedList.js

// This is an input class. Do not edit.
class LinkedList {
  constructor(value) {
    this.value = value;
    this.next = null;
  }
}

// O(n) time | O(1) space
function removeDuplicatesFromLinkedList(linkedList) {
  let currentNode = linkedList
	while (currentNode !== null) {
		let nextNode = currentNode.next
		while (nextNode !== null && currentNode.value == nextNode.value) {
			nextNode = nextNode.next
		}
		currentNode.next = nextNode
		currentNode = nextNode
	}
  return linkedList;
}

// Do not edit the lines below.
exports.LinkedList = LinkedList;
exports.removeDuplicatesFromLinkedList = removeDuplicatesFromLinkedList;