I’m very excited by focusgroup: a declarative way to handle a bunch of keyboard-navigation patterns that currently require a lot of brittle JavaScript.

This is exactly the sort of thing I want to see the platform absorb. We’ve spent years rebuilding common interaction patterns with roving tabindex, focus management, and piles of event handling code. If the browser can take more of that on, we get lighter pages, more consistent experiences, and fewer opportunities for developers to get keyboard support wrong.