Are there debuggers that can single step over the transpiled bits so that it feels like the methods are implemented natively? Otherwise, it becomes a mess.

I’m not sure if it exists, but it definitely seems doable (a regular debugger has to map instructions to lines of code).

If the browser starts treating JS as assembly, then there would probably be a greater onus for features like this.

That would be nice. Was stepping through some modern react code, and the amount of cruft you see is terrible in the transpiled result.

> sourcemaps etc do currently exist for JS.

Are those being supplied with every website you use?