Even alone I find it indespensible. I find it’s mainly useful for writing code correctly the first time around.
Some people think better with typing information explicitly written out. Some people don’t. In my opinion it is a creativity thing. Some people like to make art that is photo realistic, some people like to make abstract art.
I understand both viewpoints. In my free time I vastly prefer late bound, dynamically types languages with robust reflection engineers built into their interpreters. For work, I heavily prefer late bound, strictly typed with reflection optional or minimal.
Different people think differently.
I think that’s fine if that’s how you like to work on your own, but I’d challenge anyone to do that and write better documentation while also getting a team or whole business to do the same. A huge strength of TS is that it gives people no choice but to document their work.
I didn’t say JavaScript… and I certainly wouldn’t choose TS for a personal project because I personally feel that its organization is terrible but I would choose TS over vanilla js for work projects because it does produce better group work and is easier to maintain long term because of the structure imposed on it.