# todo - better error reporting and stack traces in strict mode - auto-enable of strict mode depending on compiler optimizaton level - investigate if weak table iteration can be invalidated - have reactive recomputations track sources dynamically? - addresses case where sources are used in if-branching guarded by another source - performance implications - implement from solid - [x] onCleanup > `cleanup()` - [x] Index > `indexes()` - [x] For > `values()` - [x] untrack - [ ] batch - [ ] async/resource/loading/suspense - [ ] stores