Joel Burget\n Joel Burget (@dino_joel)\n The Recurse Center\n The algebra (and calculus!) of algebraic data types\n Pigment\n hopper-lang/hopper: a sound modern language for computation and transactional resource logic\n PureScript\n Elm\n Flow\n gaearon/react-hot-loader: Tweak React components in real time.\n bhauman/lein-figwheel: Leiningen plugin that pushes ClojureScript code changes to the client\n Nuclide\n buckie/juno: Smart Contracts Running on a BFT Hardened Raft\n Sentry: Track exceptions with modern error logging for JavaScript, Python, Ruby, Java, and Node.js\n TypeScript - JavaScript that scales.