Ash models an application's verbs or operations as actions. This allows the production of events via an "Aspect Oriented" way of hooking into the action lifecycle.

Although it doesn't support a command first Event sourcing approach, AshEvents (https://github.com/ash-project/ash_events) does help produce events that could be replayed.

Torkild wrote an article about his latest updates to AshEvents here:

https://alembic.com.au/blog/ash-events-event-sourcing-made-s...