Named function in CoffeeScript

square.coffee

# Classes are the only place CoffeeScript generates named functions.
# This might seem messy, but the extra wrapping is necessary in order
# to have consistent behavior in IE. See the FAQ for more details:
# https://github.com/jashkenas/coffee-script/wiki/FAQ

class square
  constructor: (x) -> return x * x # constructors require an explicit return

console.log square 5    # 25
console.log square.name # square