[dahwolf]

Except that most code actually isn't passing around random unnamed objects of unknown type or contents. Their meaning and type are implied clearly enough in many if not most cases by their name and usage.

Hence, the downside is doing a lot of work to describe things we already know whilst making code less readable (or at least longer).

I'm still largely in favor of Typescript, I'm just suggesting to not misrepresent the situation of not having Typescript.