Fargo // An experimental language to improve how we work with asynchronous systems in JavaScript. It runs on Node.js and in browsers. Its core is a modified R5RS Scheme. It has tail-recursion and syntax-rules macros, and uses the core library from Heist. Data types are booleans #t/#f, numbers, symbols, strings, lists (a b c) and vectors #(a b c). Quasiquoting with '/`/,/,@ is supported. Instead of