Could build only changed files

[plievone]

Commoner does this internally, but if you need more make-like behavior for your other build tasks, there is finally a grunt plugin to build only newer files. You could evaluate it if you want to shave a few (sub)seconds from your testing cycle. (Needs experimenting how to handle file renames, deletions etc).

https://github.com/tschaub/grunt-newer

[zpao]

If you see a place where you think we need it, feel free to do it. I think the costliest parts are covered by commoner right now (though presumably grunt build && grunt build could be shortened with grunt-newer but I don't know how realistic that is) so I'm not sure how much of a win we'd get. I think there are probably other optimizations we could make in the build process first.

[plievone]

@zpao you are right. I'm going to experiment with this later. Closing this for now