agent.stub types break when callable returns this.state

[mattzcarey]

Describe the bug

In a Agent define this method

  @callable()
  async getInternal() {
    return this.state;
  }

then in a client using useAgent try and call this:

const state = await agent.stub.getInternal();

getInternal() throws a typescript error.

if you change getInternal() to

  @callable()
  async getInternal() {
    return "hello world";
  }

it works fine.

Version:
latest

[threepointone]

this is so weird lol