Learning Redux

Removing undo/redo logic from the counter reducer

Now that we have implemented a generic higher-order reducer that can make our counter reducer undoable, we can remove the undo/redo logic completely from the reducer.

Replace the contents of the src/reducers/counter.js file with the following code:

import { INCREMENT, DECREMENT, RESET } from '../actionTypes'export default function counterReducer (state = 0, action) {  switch (action.type) {    case INCREMENT:      return state + 1    case DECREMENT:      return state - 1    case RESET:      return 0    default:      return state  }}