{\n    config = {\n      ...Default,\n      ...config\n    }\n    Util.typeCheckConfig(NAME, config, DefaultType)\n    return config\n  }\n\n  _triggerBackdropTransition() {\n    const hideEventPrevented = $.Event(EVENT_HIDE_PREVENTED)\n\n    $(this._element).trigger(hideEventPrevented)\n    if (hideEventPrevented.isDefaultPrevented()) {\n      return\n    }\n\n    const isModalOverflowing = this._element.scrollHeight > document.documentElement.clientHeight\n\n    if (!isModalOverflowing) {\n   ...