While typescript typing is extremely powerful and expressive, I sometimes find that code written with it overuses some of the features in order to make types and interfaces align, rather than rethinking the design altogether. Especially with generics, things can get overly complex precisely because of the ability to extract return types, use partial types, omit fields, etc.

My biggest typescript gripe is the fact that interface and type are _nearly_ interchangable, and many codebases just use interface wholemeal where it isn't really appropriate.