- Dissociate the chat observer (which persists messages in a store)
from chat rendering.
- Do not keep the chat mounted in the DOM anymore.
- Recompute the minimal amount of data when a participant renames.
- Memoize most of the layout.
- Drop the manual textarea row-size computation: recent React Aria
already handles it.
Known regressions still to solve: focus behavior on the input,
scroll behavior on message updates, and edge cases around list
sizing.
Not sure yet whether there is a better way to memoize the
virtualized list; open to feedback.
lebaudantoine