"Facebook’s open source browser contributions" by Vladan Djeric https://code.fb.com/web/browser-contributions/
"Like many complex applications on the web, our desktop Facebook.com website is slower to load than our native mobile Android app on the same hardware — even though the web app loads an order of magnitude less code."
I had kind of forgotten that there was ever a push to make web apps that could perform as well as native apps. It almost feels like we've given up on that idea.