text: const registerServiceWorker = () => {
  
      if ('serviceWorker' in navigator) {
          window.addEventListener('load', function () {
              navigator.serviceWorker.register('/sw.js').then(function (registration) {
                  // Registration was successful
                  console.log('ServiceWorker registration successful with scope: ', registration.scope);
              }).catch(function (err) {
                  // registration failed :(
                  console.log('ServiceWorker registration failed: ', err);
              });
          });
      }
  }
  
  export default { registerServiceWorker} ;
  