references.txt

lighthouse google extension

manifest generator:
https://tomitm.github.io/appmanifest/

favicon generator:
https://realfavicongenerator.net

validator:
https://manifest-validator.appspot.com/

https://jakearchibald.com/2014/offline-cookbook/
https://addyosmani.com/blog/getting-started-with-progressive-web-apps/
https://developers.google.com/web/fundamentals/getting-started/codelabs/offline/
https://developers.google.com/web/fundamentals/getting-started/codelabs/your-first-pwapp/
https://www.w3.org/TR/service-workers/
https://github.com/GoogleChrome/samples/tree/gh-pages/service-worker

chrome://inspect/#service-workers

https://developers.google.com/web/fundamentals/getting-started/primers/service-workers
https://www.youtube.com/watch?v=4-WnlHhqcjU&feature=youtu.be&list=PLFZ5NyC0xHDaaTy6tY9p0C0jd_rRRl5Zm

https://www.ampproject.org/it/docs/guides/author-develop/pwa-amp

https://ponyfoo.com/articles/backgroundsync

https://developers.google.com/web/updates/2015/12/background-sync

https://serviceworke.rs/push-payload_index_doc.html

https://ponyfoo.com/articles/backgroundsync
https://medium.com/offline-camp/hack-time-service-workers-background-sync-and-pouchdb-3c8b71535823

https://github.com/mozilla/serviceworker-cookbook

https://localforage.github.io/localForage/#multiple-instances-createinstance

https://davidwalsh.name/fetch