title: Access child class' static members from base class
body: <p>I have the following base class:</p>
  
  <pre><code>class BaseClass {
      public static myFlag: boolean = false;
  
      constructor() {
          //reference ChildClass.myFlag??
      }
  }
  </code></pre>
  
  <p>With the child class:</p>
  
  <pre><code>class ChildClass extends BaseClass {
      constructor() { super(); }
  }
  </code></pre>
  
  <p>And the following code:</p>
  
  <pre><code>ChildClass.myFlag = true;
  var child = new ChildClass();
  </code></pre>
  
  <p>How can I reference the value of the child class' <code>myFlag</code> property without passing the child class to the base class' constructor?</p>