Of course, such old code will need to be upgraded to recent version of Java anyways.
I did recently a migration from JS to TS, and it is still quite painful. You have to hunt a lot of TS config options to make them just right so that JS + TS can work together and not get into any 'import' errors.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.