How to combine several reducers into one using combineReducers?

Question

React Native

I'm trying to combine several reducers into one using combineReducers but it doesn't work.
Here is the code:

store.js

import { combineReducers, createStore } from "redux";

const initialStateOne = {
    myState: 1,
};

const initialStateTwo = {
    myState: 2,
};

const reducerOne = (state = initialStateOne, action) => {
    return state;
};

const reducerTwo = (state = initialStateTwo, action) => {
    return state;
};

const rootReducer = combineReducers({
    one: reducerOne,
    two: reducerTwo,
});

export default store = createStore(rootReducer);

app.js

import React from "react";
import { NavigationContainer } from "@react-navigation/native";
import { createStackNavigator } from "@react-navigation/stack";
import { Provider } from "react-redux";
import store from "./src/store";

import NewComponent from "./src/NewComponent";

const Stack = createStackNavigator();

export default function Navigation() {
    return (
        <Provider store={store}>
            <NavigationContainer>
                <Stack.Navigator>
                    <Stack.Screen
                        name="NewComponent"
                        component={NewComponent}
                    />
                </Stack.Navigator>
            </NavigationContainer>
        </Provider>
    );
}