Reminds me of WSGI in Python – which is to say, the simplicity of functions that take requests and return responses, and then all your composition techniques ar

Reminds me of WSGI in Python – which is to say, the simplicity of functions that take requests and return responses, and then all your composition techniques are regular programming techniques. (With Promises added into the mix of course, but then you have .then() chaining with similar effect.) It doesn't seem like a huge deal, but it's so much more convenient, makes it easier to think about the code, modify and rewrite values, all the normal programmy stuff people like to do in programs with values, instead of objects and actions. And yeah, if you use websockets or HTTP/2 or some other low-level stuff then it's going to break down, but there's only a couple of those and they should each just get their own separate layer.