const DoublyLinkedList = require('./DoublyLinkedList');

class Stack {
  constructor() {
    this._list = new DoublyLinkedList();
  }
}

module.exports = Stack;

@@ -126,16 +126,139 @@
 t();%0A  %7D
+%0A%0A  /**%0A   * Get length of Stack%0A   * @return %7BNumber%7D Size of Stack%0A   */%0A  get size() %7B%0A    return this._list.length;%0A  %7D
 %0A%7D%0A%0Amodu

Add size method to Stack