The main feedback I have is that I wanted to read this near the end of my lunch break, because I've been interested for years in the idea that a reasonably-restricted subset of TypeScript (who needs all that dynamism) can almost definitely be compiled to machine code and be made super fast, faster than V8 -- so I was looking for a TLDR in this article and spent a couple minutes looking for it and then just reading whole paragraphs and still don't really know what you've got here.