Aside; the FF dev release notes always impress upon me the scale of modern browsers. There's just so much new stuff, and lots of it isn't trivial at all, and that's despite the rather rapid release calendar, and the need to be pretty much rock solid on a huge variety of systems, and the list of tricky non-functional aspects like perf, size, security, maintainability, etc. that all this code needs to at least consider. It's daunting.
https://developer.mozilla.org/en-US/Firefox/Releases/51#Chan... (e.g. JS/CSS api changes).
Aside; the FF dev release notes always impress upon me the scale of modern browsers. There's just so much new stuff, and lots of it isn't trivial at all, and that's despite the rather rapid release calendar, and the need to be pretty much rock solid on a huge variety of systems, and the list of tricky non-functional aspects like perf, size, security, maintainability, etc. that all this code needs to at least consider. It's daunting.