For me, it depends on the project. I try to stick to JS for smaller, simpler projects, but anything large (or with potential to become large) I use TS. I've worked on some very large JS projects over the years and in my opinion it's really difficult to for a JS codebase to scale well.

I definitely agree with being more productive with a lighter stack, but I do find the even though TS is slower to develop due to compiling, the quality of the code is usually better (especially with multiple people on a project).