* Update ts-eslint
* Remove comments
* Remove unused ts-ignore
* Add undefined generic type instead of unknown
* Remove unused undefined type
* Fix type issues
* Use undefined instead of void for subscribed return type
* Convert tests to TypeScript
* Add types for tests
* Rename files to TS
* Fix up test imports
* Fix TSC errors
* Liiiint
* Add types to util method signatures
* Some more types