Building Enterprise JavaScript Applications

Creating the store

As mentioned previously, the entire state of the application is stored as a single object inside a construct called the store. The store is central to a Redux application, so let’s create it. Inside src/index.jsx, add the following lines:

import { createStore } from 'redux';  const initialState = {}; const reducer = function (state = initialState, action) {   return state; } const store = createStore(reducer, initialState);

The createStore method accepts three parameters:

• reducer function: A function that takes in the current state and an action, and uses them to generate a new state.
• initialState any: The initial state. The initialState can be of any data type, but we will use an object literal here.

• enhancer function ...