That's the title. That's the whole premise of the post.
> his primary gripe specifically as a library developer - is that the knowledge base for library developers is very sparse.
No, it isn't.
I agree with GP, you don't seem to have read his article and knee jerked a reply.
And all you have to do to prove your point is to link some great documentation explaining how to make complex types for libraries and how to test them.
Which you haven't.
I feel that my point is proven with a successful multiple year open source Typescript library.
Great documentation? That's subjective. I'd start with a deep reading of the official docs as they are quite good: https://www.typescriptlang.org/docs/
That only proves that it's possible to do, not that the language facilitates it or that certain modifications to the language/ecosystem wouldn't greatly improve the process. The point of the article is the latter, not the former.
No. What you said was:
> In other words, I call bullshit on this entire blog post. Ignore it.