I would love all of this to work cleanly when debugging. A lot of these things currently work very well, until you need to de bug them. Even with tools that don

I would love all of this to work cleanly when debugging. A lot of these things currently work very well, until you need to de bug them. Even with tools that don't do THAT much rewriting (i.e. Traceur or something, to convert arrow-functions into regular ones) source maps work pretty unreliably, where I usually have to refresh a few times before they work (and remember my breakpoints). Is there any traction on this front, something like a system where the source map actually embeds the AST or the like?