I think what you've described would be mostly accomplished by source maps: http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/ http://www.html5roc

I think what you've described would be mostly accomplished by source maps: http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/ http://www.html5rocks.com/en/tutorials/developertools/source...