Yea, the structural typing nature of TS drives me nuts. One thing I like in TS is the ability to reference individual "parts of a type", for example Account["email"] instead of "string" in function signatures. Is there something like that in C#?

TS errors are my only real complaint about TS.

Otherwise it's a joy to work in, imo.

Trying to go from TS back to JS is a frustrating experience to say the least.

TS can generate such good and natural looking JS that, faced with someone insisting on receiving a JS codebase, I’d consider keeping a shadow-repo in TypeScript and handing them its output.

Doesn’t work so well with an existing codebase, but still.