text: /**
   * Polyfills the .closest method for ELement
   * Currently being used for scrollIntoView
   * For reference: https://github.com/zloirock/core-js/issues/317
   */
  window.Element.prototype.closest = function closest(s) {
      if (!window.Element.prototype.matches) {
          window.Element.prototype.matches =
              window.Element.prototype.msMatchesSelector || window.Element.prototype.webkitMatchesSelector;
      }
  
      let el = this;
      do {
          if (el.matches(s)) return el;
          el = el.parentElement || el.parentNode;
      } while (el !== null && el.nodeType === 1);
      return null;
  };
  