Конвертация Cookie в GET переменные

<script>(function() {
  // function to get GET variables from the address bar
  function getParameterByName($from, $name) {
    let match = RegExp(`[?&]` + $name + `=(?!=&)([^&]*)`).exec($from);
    return match && decodeURIComponent(match[1].replace(/\+/g, ` `));
  }

  // start recording an array with site sorting data and GET variables upon detecting sort_by
  let $from = window.location.href;
  if (getParameterByName($from, "sort_by") !== null) {

    let $hotengine_cookie_conv_to_get = [
      {"sort_by": getParameterByName($from, "sort_by")},
      {"order_by": getParameterByName($from, "order_by")},
      {"order_by_param": getParameterByName($from, "order_by_param")},
      {"shop_new_goods": getParameterByName($from, "shop_new_goods")},
      {"shop_sale": getParameterByName($from, "shop_sale")},
      {"shop_bestsellers": getParameterByName($from, "shop_bestsellers")},
      {"shop_discount": getParameterByName($from, "shop_discount")},
      {"shop_reduced_price": getParameterByName($from, "shop_reduced_price")},
      {"sort_instock_priority": getParameterByName($from, "sort_instock_priority")},
      {"price_from": getParameterByName($from, "price_from")},
      {"price_to": getParameterByName($from, "price_to")},
      {"NUM_ONPAGE": getParameterByName($from, "NUM_ONPAGE")},
      {"smart_search": getParameterByName($from, "smart_search")},
      {"search": getParameterByName($from, "search")},
    ];

    // record Cookie with data in JSON format
    document.cookie = `hotengine_cookie_conv_to_get=${JSON.stringify($hotengine_cookie_conv_to_get)}; path=/; max-age=31536000;`;

  }

  // to delete Cookie use document.cookie=`hotengine_cookie_conv_to_get=; path=/; max-age=0;`;

})();
</script>