> Now I use esbuild instead of tsc, and I have the best of both worlds.

I'm interested in this. I know esbuild can compile TypeScript to JS, but that it doesn't serve as an actual typechecker. Without tsc as a dev dependency, do you just rely on your IDE's intellisense to tell you when there's a type error?

I still install tsc, but I don’t actually do the type checking except at release time (and whatever typechecking the IDE provides through the language server).