actionCreators.ts

import { Action } from 'redux';
import { ThunkAction } from 'redux-thunk';
import { AppState } from '../reducers';

export type AppAction<A = Action, P = any> = A & { payload: P };

export function makeActionCreator<P, T extends string = string>(type: T) {
  function actionCreator(payload?: P): AppAction<Action<typeof type>, P> {
    return {
      type,
      payload: payload ? payload : ({} as any),
    };
  }

  return actionCreator;
}

export function makeAsyncActionCreator<P, T>(callback: ThunkAction<any, AppState, any, AppAction<Action<T>, P>>) {
  return () => callback;
}