This is just one example of a general tension between compiling to produce an asset vs compiling as a service to provide data for tooling. The environments and

This is just one example of a general tension between compiling to produce an asset vs compiling as a service to provide data for tooling. The environments and things you optimize for are different, so you get differences like this. Compilers like what C# and F# use unify these into the same codebase (no presentation compiler) but the tradeoffs still exist.