Creating the store

The final task in Store.ts is to create a function that creates the Redux store so that it can be provided to the React components. We need to feed all the store reducers into this function as well. Let's do this by performing the following steps:

1. First, let's import the Store type and the createStore and combineReducers functions from Redux:

   import { Store, createStore, combineReducers } from 'redux';

   Store is the top-level type representing the Redux store.

   We will use the createStore function to create the store later.

   combineReducers is a function we can use to put multiple reducers together into a format required by the createStore function.

2. Let's use the combineReducers function to create what is called a root reducer:

   const rootReducer = combineReducers<AppState>({
     questions: questionsReducer
   });

   An object literal is passed into combineReducers, which contains the properties in our app state, along with the...