In the types, require using $.response to build a response.

[pmcelhaney]

At the type level, require operation handlers to use $.response.

This no longer type checks:

export const GET: HTTP_GET = () => {
  return "hello world";
};

And neither does this:

export const GET: HTTP_GET = () => {
  return {
    status: 200, 
    body: "hello world"
  };
};

Use the response builder instead.

export const GET: HTTP_GET = ($) => {
  return $.response[200].json("hello world");
};

The first two examples will still work at runtime, so I'm leaning toward not calling this a breaking change.

In the future this will allow us to change the shape of a response at runtime without breaking changes.

It also pushes agents generating code to use $.response instead of returning an object that just happens to be the right shape.