meinefinsternis

import {
  combineReducers,
  configureStore,
  createListenerMiddleware,
  isAnyOf,
} from "@reduxjs/toolkit";
import Auth, { setIsAuth } from "path/to/slice";

const localStorageListenerMiddleware = createListenerMiddleware();

localStorageListenerMiddleware.startListening({
  matcher: isAnyOf(setIsAuth),
  effect: (_, listenerApi) =>
    localStorage.setItem(
      "auth",
      JSON.stringify((listenerApi.getState() as RootState).Auth),
    ),
});

const re_hydrate_auth = (): boolean => {
  try {
    const userAuthState = localStorage.getItem("auth");
    if (userAuthState) {
      const { isAuth } = JSON.parse(userAuthState) as { isAuth: boolean } - (AuthSliceState);
      return isAuth;
    }
  } catch {
    return false;
  }
  return false;
};

const reducer = combineReducers({
  Auth,
});

export const store = configureStore({
  reducer,
  middleware: (getDefaultMiddleware) =>
    getDefaultMiddleware().concat(localStorageListenerMiddleware.middleware),
  preloadedState: {
    Auth: {
      isAuth: re_hydrate_auth(),
    },
  },
});

interface State1 {
  st: number;
}
interface State2 {
  tmp1: number;
  tmp2: string;
}

const state1: State1 = { st: 1 };
const state2: State2 = { tmp1: 2, tmp2: "3" };

const state = { state1, state2 };

function getCurrentState<T extends keyof typeof state>(key: T) {
  return state[key];
}

// const currentState1: State1
const currentState1 = getCurrentState("state1");

// const currentState2: State2
const currentState2 = getCurrentState("state2");