https://www.larmagnacestdanslepre.com/pwa-service-worker.js

1// https://developers.google.com/web/ilt/pwa/introduction-to-service-worker
2// https://developer.mozilla.org/fr/docs/Web/Progressive_web_apps
3self.addEventListener('fetch', function (event) {
4    event.respondWith(caches.match(event.request).then(function (response) {
5        return response || fetch(event.request);
6    }).catch(function (e) {
7        console.log(e);
8
9        // Si on ne renvoie rien ça bloque certaines requetes comme mondial relay
10        return new Response('', {
11            status: 503,
12            statusText: 'Service Unavailable'
13        });
14    }));
15});