<script type=“text/javascript”> (() => {

const registerServiceWorker = () => {
  if (!navigator.serviceWorker) {
    return;
  }

  navigator.serviceWorker
    .register("{{ "/sw.js" | relative_url }}")
    .then(registration => {
      console.log("Service Worker: registered");
    })
    .catch(err => {
      console.log("Service Worker: registration failed ", err);
    });
};

registerServiceWorker();

})(); </script>