Method make

src/core/data-structures/dom-based-weakref.js:28–37

* Returns a WeakRef. Uses this implementation if the real WeakRef class * is not available. * @param {Window} win * @param {Element} element * @return {WeakRef |DomBasedWeakRef}

(win, element)

   * @return {WeakRef<Element>|DomBasedWeakRef}
   */
  static make(win, element) {
    if (win.WeakRef) {
      return new win.WeakRef(element);
    }
    if (!element.id) {
      const index = (win.__AMP_WEAKREF_ID = (win.__AMP_WEAKREF_ID || 0) + 1);
      element.id = 'weakref-id-' + index;
    }
    return new DomBasedWeakRef(win, element.id);
  }

  /** @return {Element|undefined} */
  deref() {