Offline fallback page with service worker

Years ago, I did some research into how native applications responded to a lack of network connectivity. Whilst I've lost the link to the analysis (I could swear it was on Google+), the overarching narrative was that many native applications are inextricably tied to the internet that they just straight up refuse to function. Sounds like a lot of web apps, the thing that set them apart from the web

[t2wave]

self.registration.navigationPreload.enable()でキャッシュとは別にpreloadのフォールバックレスポンスを返せる