Reducers

In previous chapters, we split our Redux-specific code (reducers, actions, and action creators) in the standard way that is documented in Redux's documentation. To make it easy to maintain in the future, we will use a different approach for this app: Redux Ducks (https://github.com/erikras/ducks-modular-redux).

Redux Ducks is a proposal for bundling together reducers, action types, and actions when using Redux. Instead of creating separate folders for reducers and actions, they are put together in files based on which kind of functionality they handle, reducing the number of files to deal with when implementing new features.

Let's start with the products reducer:

/*** src/reducers/products.js ***/

import { get } from '../api';

// Actions
const FETCH = 'products/FETCH';
const FETCH_SUCCESS = 'products/FETCH_SUCCESS';
const FETCH_ERROR = 'products/FETCH_ERROR';
const ADD_TO_CART = 'products/ADD_TO_CART';
const REMOVE_FROM_CART = 'products/REMOVE_FROM_CART';
const RESET_CART = 'products...