coffee-script handles ternaries poorly?

ternary.coffee

# I want to write

method = condition ? 'show' : 'hide'

# but that compiles to:
#   var method;
#   method = (typeof condition !== "undefined" && condition !== null) ? condition : {
#     'show': 'hide'
#  };

# so I have to use

method = if condition then 'show' else 'hide'

# to get
#   var method;
#   method = condition ? 'show' : 'hide';


# or I can do

method = if condition
           'show'
         else
           'hide'

# to get the same thing...  am I missing something?