# todo

- property binding optimization
  - would no longer allow `cleanup()` usage in binding scopes
- solution to nested reactivity, see: SolidJS stores
- optimize wide graph updating
- implement from solid:
  - Portal
  - batch
- optimize `indexes()` double-diffing
- define behavior of deriving a source within a derived source
- define behavior of node destruction under a root that has a child in another root
- improve crash course, some sections feel like information dumps