I keep running into Senior JS positions where they want CoffeeScript. The reason I don't use CoffeeScript is that my first impression of it was that it puts limitations on JS OOP features that I find ...
The "Verbally Readable !== Quicker Comprehension" argument on http://ryanflorence.com/2011/case-against-coffeescript/ is really potent and interesting. I and I'm sure others would be very interested ...
Of course one big pro is the amount of syntactic sugar leading to shorter code in a lot of cases. On http://jashkenas.github.com/coffee-script/ there are impressive examples. On the other hand I have ...