yikes, I never noticed that the Closure Compiler README was updated. https://github.com/google/closure-compiler/tree/master?tab=readme-ov-file#important-caveats some kinda concerning stuff in there.
it makes sense to me, de-scoping and to be honest it was clear to me that stuff wasn't actively being worked on. I think they tried a lot of things, but just lowering to old-school Closure was the simplest in the end.
• Support for the import and export syntax added in ES6 is not actively maintained. I thought that was for sure fully supported and maintained
I mean nothing really new there, but still I guess they dropped all ambitions to support more stuff
I, for one, am happy that this is happening. It gives us scope to modify or update things as appropriate for ClojureScript, without needing to rely on an upstream project that never updated.