TypeScript isn't a client-side framework.
I realize you are trying to say I am comparing apples to oranges, but the site explicitly mentions Human Javascript approach as inspiration, and Human Javascript is all about choosing your tools. I am pointing out that there is an incredibly powerful tool that works extremely well for large-scale software development.
There are probably good use cases for Ampersand.js. The argument in this article is a really mediocre at best use case.