Allows Consumer Pass Argument for Return Type of `createMutatorStore`

[martinmckenna]

Description

Allows consuming code to pass a type argument for the return value of createMutatorStore. Really, it just re-uses the Response argument and passes it through to MutatorCb

Usage

const doThing = async (): Promise<{id: string}> => {
  const r = await fetch("/hello/world");
  return r.json();
};

const $createThing = createMutatorStore<
  { hello: "world" },
  { id: string; description: string }
>(() => doThing()); // will correctly error b/c doThing() is missing `description`

[dkzlv]

@martinmckenna Thanks! Published in 0.2.10.