I don’t know, I don’t really use or like Typescript. But, the reason I think IntelliJ may do better with Typescript is just that TS has a Java-like type system,

I don’t know, I don’t really use or like Typescript. But, the reason I think IntelliJ may do better with Typescript is just that TS has a Java-like type system, so IntelliJ’s Design as a Java IDE may end up being an advantage.