I totally get the idea of bringing JS into new environments because it is so ubiquitous. On the other hand, I hate the language and wish we could replace it in the browser, the opposite direction. I'd be much happier with ClojureScript or PureScript or something being the standard with the ecosystem to go with it.
Typescript takes away a significant amount of the pain for me; the only hold up after that was getting an environment set up to compile it. Deno supporting typescript without any configuration is incredible.
TypeScript is mostly additive, so all the footguns are still there if you aren't careful to avoid them. It also doesn't do anything about the extremely meager standard library that is inferior to what other mainstream PLs had 20+ years ago.
