Xcode Shell Script Build Phase for compiling CoffeeScript code during build

gistfile1.sh

export NODE_PATH=/usr/local/lib/node:/usr/local/lib/node_modules
export PATH=/usr/local/bin:$PATH

echo "Compiling .coffee assets..."

RESULT=`/usr/local/bin/coffee -c ${PROJECT_DIR}`

if [ $? -ne 0 ]
then
  echo "The coffee command exited with non-zero exit status."
  echo "$RESULT"
  echo "Coffeescript compilation FAILED."
  exit 5
else
  echo "The coffee command exited with success code."
fi

if [ "$RESULT" == "" ]
then
  echo "The coffee command did not emit any warnings or errors."
  echo "Coffeescript compilation completed."
else
  echo "The coffee command emitted unexpected message(s):"
  echo "$RESULT"
  exit 4
fi