PouchDB IndexedDB - sgml/signature GitHub Wiki
https://github.com/w3c/web-platform-tests/tree/master/IndexedDB
https://developer.mozilla.org/en-US/docs/Web/API/IndexedDB_API
https://stackoverflow.com/questions/2860879/detecting-if-a-browser-is-using-private-browsing-mode
https://levelup.gitconnected.com/using-the-indexeddb-api-with-react-and-hooks-4e63d83a5d1b
https://developer.amazon.com/blogs/home/tag/HTML5
https://developers.google.com/web/ilt/pwa/working-with-indexeddb
https://www.pwastats.com/tags/indexeddb
https://bitsofco.de/bitsofcode-pwa-part-2-instant-loading-with-indexeddb/
https://medium.com/@riccardocanella/improve-your-cache-using-the-hated-indexeddb-adbd0f65cb7c
https://www.raymondcamden.com/2015/04/24/indexeddb-and-limits-ie
http://w3c-test.org/IndexedDB/
https://www.tutorialspoint.com/pouchdb/pouchdb_quick_guide.htm
https://mikecavaliere.com/building-an-all-offline-web-app/
https://www.levvel.io/our-ideas/offline-data-in-the-browser
https://dev.opera.com/articles/introduction-to-indexeddb/
https://code.msdn.microsoft.com/windowsapps/IndexedDB-sample-eb1e95af
https://girliemac.com/stickies/
https://medium.com/offline-camp/rethinking-offline-first-sync-for-service-workers-da4727b6dee
https://viblo.asia/p/simple-web-workers-workflow-with-webpack-3P0lPkobZox
Workers
https://bugs.jquery.com/ticket/9889
https://www.codeproject.com/Articles/168604/Combining-jQuery-Deferred-with-the-HTML5-Web-Worke
https://googlechrome.github.io/samples/service-worker/fallback-response/
https://asquera.de/blog/2018-10-01/webassembly-and-wasm-bindgen/
https://www.clicktorelease.com/blog/optimise-svg-load-service-worker/
https://www.html5rocks.com/en/tutorials/file/filesystem-sync/
https://strongloop.com/strongblog/serving-a-progressive-web-app-from-loopback/
https://developer.ibm.com/clouddataservices/2016/02/26/running-pouchdb-in-a-web-worker/