Hello, I’ve published a couple of repos that people here might be interested to try out:
You can clone and run the latter directly according to the instructions there (Windows may not work for now unfortunately).
Would love to get feedback 
Very cool! I’m also trying to build a framework, but purely in BuckleScript to target Node.js. The construction/composition of functions in your framework makes writing user code very elegant!
I do have a question about the routing system. I’m not so familiar with OCaml magic, but I wonder how you would be able to implement listing or introspection of all registered routes in the system for something like a CORS middleware?
Thank you! At the moment I don’t have a good answer for introspecting all the routes, because they are static OCaml patterns, they don’t exist as first-class values. But, I can tell you that there must always be a single entry point for all the routes. So you can definitely add a CORS and other middleware to all routes. For example, if you wrote a filter cors:
// Your 'real server'
let server = fun
| (`GET, ([] | [""])) => hello
| _ => notFound;
// Wrapped with a cors filter
let server = (meth, path) => cors @@ server @@ (meth, path);
// Run the wrapper server
let () = Server.serve(server);
In fact I am going to add a config system to ReWeb and put in place some default-configured security filters on all servers out of the box. The config will be overridable.
Looking great, the documentation is looking really good for such a new project as well, keep it up!