text: /*!
   * jQuery Mousewheel 3.1.13
   *
   * Copyright jQuery Foundation and other contributors
   * Released under the MIT license
   * http://jquery.org/license
   */
  function fontSize(element) {
      const value = getComputedStyle(element).fontSize;
      if (value != null)
          return parseInt(value, 10);
      return null;
  }
  function lineHeight(element) {
      const parent = element.offsetParent ?? document.body;
      return fontSize(parent) ?? fontSize(element) ?? 16;
  }
  function pageHeight(element) {
      return element.clientHeight; // XXX: should be content height?
  }
  export function getDeltaY(event) {
      let deltaY = -event.deltaY;
      if (event.target instanceof HTMLElement) {
          switch (event.deltaMode) {
              case event.DOM_DELTA_LINE:
                  deltaY *= lineHeight(event.target);
                  break;
              case event.DOM_DELTA_PAGE:
                  deltaY *= pageHeight(event.target);
                  break;
          }
      }
      return deltaY;
  }
  //# sourceMappingURL=wheel.js.map