> I love the idea of an IDL for describing APIs and a great compiler/codegen (protoc) Me too. My context is that I end up using RPC-ish patterns when doing sli

> I love the idea of an IDL for describing APIs and a great compiler/codegen (protoc) Me too. My context is that I end up using RPC-ish patterns when doing slightly out-of-the-ordinary web stuff, like websockets, iframe communications, and web workers. In each of those situations you start with a bidirectional communication channel, but you have to build your own request-response layer if you need that. JSON-RPC is a good place to start, because the spec is basically just "agree to use `id` to match up requests and responses" and very little else of note. I've been looking around for a "minimum viable IDL" to add to that, and I think my conclusion so far is "just write out a TypeScript file". This works when all my software is web/TypeScript anyway.