Make it easy to "segment" namespace handlers.

[Pomax]

There is no real way to specify something like:

class Server {
    constructor(...) { ... }

    admin: {
       async registerClient() { ... }
    }

    user: {
        async setName(data) { ... },
        async getUserList() { ... },
   }
}

so it would be nice to figure out a way to make it easier to specify separated handlers for separate namespaces.

The main reason to do this would be that traditional namespacing thing: making it possible for multiple functions with the same name, under different namespaces. E.g. admin.register vs lobby.register vs game.register

[Pomax]

Fun fact: this is entirely legal:

class X {
  async "admin.test"(data) {
    console.log(data);
  }
}

But may be a little too esoteric... ?

[Pomax]

One option is to use the namespace as a function prefix, so that if the API defines admin: endpoint: ['register'] that endpoint would need to implement a function async adminRegister, but this can lead to really terrible function names, and I'm not sure "shitty code" is a goal I'd want to aim for.

[Pomax]

This should probably be "use the namespaced function if it exists, otherwise omit the namespace and call that function, if it exists, otherwise throw an error"

[Pomax]

This has been added as fall-through option:

• use namespace$name if that exists,
• if not, use namespace:name if that exists,
• if not, use name if that exists,
• if not, throw a "missing function" error