PWA offline service worker settings - django

Question

I am building a simple Progressive Web Application with Python Django and django-pwa package. I have set up everything but offline functionality is not working. At this point, service workers (SW) are installed and dev tools recognize application as PWA. But when I check "offline" in devtools->Application and reload the web page there is a "No internet connection" error.
Here are my SW settings:
var staticCacheName = 'djangopwa-v1';
var filesToCache = [
'/',
'/x_offline/',
'/static/x_django_pwa/images/my_app_icon.jpg',
'/media/images/bfly1.2e16d0ba.fill-320x240.jpg',
];
// Cache on install
self.addEventListener("install", event => {
this.skipWaiting();
event.waitUntil(
caches.open(staticCacheName)
.then(cache => {
return cache.addAll(filesToCache);
})
)
});
// Clear cache on activate
self.addEventListener('activate', event => {
event.waitUntil(
caches.keys().then(cacheNames => {
return Promise.all(
cacheNames
.filter(cacheName => (cacheName.startsWith("djangopwa-v1")))
.filter(cacheName => (cacheName !== staticCacheName))
.map(cacheName => caches.delete(cacheName))
);
})
);
});
// Serve from Cache
self.addEventListener("fetch", event => {
event.respondWith(
caches.match(event.request)
.then(response => {
return response || fetch(event.request);
})
.catch(() => {
return caches.match('x_offline');
})
)
});
Listed settings are almost the same as default one from django-pwa repo
When I load the page for the first time I see that requests are also made for the urls listed in SW and all of them have status 200. In the cache storage I see cache with paths set in SW. So I don't understand what I do wrong.
Not sure if this additional info is useful, but: when I set SW to offline and reload the web page the cache storage is empty.

Answer 1

The issue is in the settings that django-pwa repo provided.
They accidentally added sign , at the end of the scope variable and so if you copy settings you copy with incorrect scope setting (PWA_APP_SCOPE = '/',) and it brakes offline mode. I am going to contact with repo admins so that to fix the issue for the next users.