TypeScript does
not take out dynamic typing or prototypical object orientation. If you can more cleanly communicate something dynamically,
do it. `any` is right there. (And I do this sometimes! Of course, code where I do this is invariably where most of my unit testing has to be, but I have the choice, and I'm making it.)
And, not to be pointy, but I always get a real weird vibe about people who come rolling in professing that TypeScript isn't a backhoe when it professes to be a shovel. TypeScript is not about a "world class type system" and that's never been the claim. It's about reducing the ways in which normal developers can shoot themselves in the foot. If ReasonML or whatever equally bloggable thing scratches your itch, sure, but you're never getting the 95th percentile of developers, to say nothing of the 50th, to write it--and that 50th, and that 95th, percentile can benefit from better tools, too.
