function getCookie(name) {
  let matches = document.cookie.match(
    new RegExp(
      "(?:^|; )" +
        name.replace(/([\.$?*|{}\(\)\[\]\\\/\+^])/g, "\\$1") +
        "=([^;]*)",
    ),
  );
  return matches ? decodeURIComponent(matches[1]) : undefined;
}