What is more important... There are better ways of introducing typing in JS without introducing Typescript (which is the main reason why people add go TS route).

I've just started building technology stack for a massive project, that soon will have 20 people onboard. JS on front, JS on the back. Not typescript at all, it's a waste of effort for questionable benefits.

Sometimes I feel TS was created by frustrated java developers because they felt lost in amazing and flexible world.of vannilla JS (I personally love JS ambiguity, it reminds me how human brain works. Imperfect, bit perfect).