pwa

I have a Angular 6 app that works and registers the SW when served with http-server --port 8080 command as you can see here: But when I serve the files from my Node / Express application that they are meant to be served. The service worker won't register, tried running the app from localhost and also from Heroku but it's the same. Application works otherwise. Any idea what can cause this? I think this issue is to do with the path that @angular/cli uses when registering the service worker, I have found registering the service worker in main.ts to be more reliable: platformBrowserDynamic()

I tried to cache a POST request in a service worker on fetch event. I used cache.put(event.request, response) , but the returned promise was rejected with TypeError: Invalid request method POST. . When I tried to hit the same POST API, caches.match(event.request) was giving me undefined. But when I did the same for GET methods, it worked: caches.match(event.request) for a GET request was giving me a response. Can service workers cache POST requests? In case they can't, what approach can we use to make apps truly offline? Marco You can't cache POST requests using the Cache API. See https://w3c