import { State } from '../default';
import Reducer from './reducer';

export default interface Dispatcher<
  G extends {} = State,
  A extends any[] = any[],
> extends CallableFunction {
  (...args: A): Promise<G>;
}

export type ExtractArguments<R> =
  R extends Reducer<infer _G, infer _R, infer A>
    ? A
    : never;

export type PropertyDispatcher<
  G extends {} = State,
  P extends keyof G = keyof G,
  A extends any[] = any[],
> = Dispatcher<G, A> & [ G[P], Dispatcher<G, A> ];