Why? This will make debugging the specfiles in Chrome pleasant, and debugging production output snazzy.
"Have you ever found yourself wishing you could keep your client-side code readable and more importantly debuggable even after you've combined and minified it, without impacting performance? Well now you can through the magic of source maps"
This will probably have to wait until Grunt upgrades to use Uglify v2: gruntjs/grunt-contrib-uglify#1
Looks like gruntjs/grunt-contrib-uglify#1 is now closed!
This happened when we added grunt-contrib-sourcemap in ec87f89