XUL layout is gone (in Firefox) ↦
Emilio Cobos Álvarez:
So this week I landed a few patches that completely removed XUL layout from the Firefox codebase.
This means that (modulo a few exceptions documented below) all the Firefox UI is using regular web technology to render (mostly CSS flexbox).
This was a rather big effort (first filed 9 years ago in bug 1033225), and I wanted to document some of the things that I learned during the process, some of the things and decisions that made it possible, and some of the things that I would’ve maybe done differently.
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