[antonvs]

There are certainly limits, but null safety doesn't need to be one of them. Typescript does a great job of handling null safety on top of JavaScript.

I don't see any technical reason why Kotlin couldn't have done the same.

[lemming]

I don't see any technical reason why Kotlin couldn't have done the same.

Kotlin does do the same. I totally disagree with GP's assertion that Kotlin has no null safety. I use both Kotlin and Clojure and I find Kotlin much better than either Clojure or Java with respect to NPEs.