Hi all, I'm pleased to give you adt.js - algebraic data types for JavaScript. * https://github.com/rehno-lindeque/adt.js (The source code & README) * https://groups.google.com/forum/#!forum/adtjs (A place to chat) adt.js is an unusual take on algebraic data types for JavaScript, that may be useful to Haskell web developers. Specifically, the adt.js serializer/deserializer attempts to imitate Haskell's default (deriving) Show and Read implementations for common data types. This allows you to pass data values between server-side Haskell and browser-side JavaScript with ease (simply apply show/read in Haskell and adt.serialize/adt.deserialize in JavaScript). It differs from other attempts in that it embraces JavaScript's built-in types in its interfaces and makes a few less obvious design choices (illustrated by examples in the README). This is more of a "I coded this and I'm finding it useful" announcement than an official release (or 0.0, if you will). Before making an official release, the idea is to dice up the library into multiple versions - each of which will be progressively more heavy-weight and implement more advanced features from the library. I haven't had time to implement such an advanced build system, however I'm already using the library for some relatively serious projects to be put into production at a later date. There's also a few related libraries I'm working on (however, fair warning, documentation is really not great right now): https://github.com/rehno-lindeque/adt-html.js (HTML should have been an ADT) https://github.com/rehno-lindeque/adt-typecheck.js (Type check JS objects) I'm a little time constrained in terms of answering questions etc (which I deeply regret), however I welcome contributors and will gladly accept/moderate pull requests. Suggestions and feedback are more than welcome, I realize that there's still many possible improvements to be made. Thank you for your attention! Kind regards, Rehno