spock - The Chicken Scheme wiki. If Dylan doesn't fit on JavaScript, how about Scheme? What's interesting here is the connection to Chicken Scheme - Chicken Scheme is one of the more interesting Scheme implementations in recent times that specifically focuses on integration into normal system environments (FFI and easy linking with C libraries), so this also lets us expect a bit from Spock in terms of JavaScript. And the documented functions already look quite good - not just a toy implementation, but apparently already a lot of functionality.