[sanitycheck]

I use TS, I like it.

I'm not sure you're 100% right about it overtaking JS for most of the industry.

I wouldn't recommend it to beginners until they've learned JS because it's a lot of stuff to learn on top of JS to achieve basically the same outcomes (with fewer bugs). Chapter 5 in the Eloquent JavaScript book gets to higher order functions, which in TS means Generics. Nobody needs to learn Generics in Chapter 5 of their programming journey.

You also don't really appreciate how useful TS is until you've battled at least one project in plain JS.

(Arguably you can go a long way without HoF too, but perhaps not if you're hoping to understand other people's code.)