Frontendistim Meetup · Aug 27, 2026
Undo Isn't the Opposite of Do
Designing history for async React — four undo architectures, from full snapshots to
transactional replay, distilled into an interactive course and a talk-ready deck with a live lab.
● The four undo designs: snapshots → Immer patches → command/inverse → transactional replay
Pure HTML/CSS/JS · no build step · course content MIT-licensed under its original sources