How to create a stack with a sort method in JavaScript

function Stack() {
  this.top = null;
  this.size = 0;
}
function Node(data) {
  this.data = data;
  this.next = null;
}
Stack.prototype.push = function(data) {
    const node = new Node(data);
    node.next = this.top;
    this.top = node;
    this.size++;
};
Stack.prototype.pop = function() {
    if (this.top === null) return;
    const data = this.top.data;
    this.top = this.top.next;
    this.size = Math.max(0, this.size - 1);
    return data;
};
Stack.prototype.peek = function() {
  if (!this.top) return;
  return this.top.data;
};
Stack.prototype.isEmpty = function() {
  return this.size === 0 && !this.top;
};
// Time complexity: O(n^2)
// Space complexity: O(n)
Stack.prototype.sort = function() {
  const temp = new Stack();
  while (!this.isEmpty()) {
    const item = this.pop();
    while (!temp.isEmpty() && temp.peek() > item) {
      this.push(temp.pop());
    }
    temp.push(item);
  }
  
  while (!temp.isEmpty()) {
    this.push(temp.pop());
  }
};