[showell30]

Just to clarify one thing, it's very unlikely that you'll take a 50% performance hit when moving from JS to CoffeeScript. That may be true for Dart as well--I don't know.

Also, since CoffeeScript transcompiles to JS, it will generally reap the benefits of future improvements to JS runtimes, packaging tools, etc.

[rbrcurtis]

I have high hopes for dart, but so far it produces absolutely crap javascript. http://www.reddit.com/r/programming/comments/ml62k/hello_wor...