Learning Redux

Defining the action types

First, we define the undo and redo action types:

1. Edit src/undoable.js and add the following definitions to the top of the file (outside of the function):

export const actionTypes = {  UNDO: 'UNDO',  REDO: 'REDO'}

2. Get rid of the old non-generic action types by removing them from the src/actionTypes.js file (delete the highlighted lines):

export const INCREMENT = 'INCREMENT'export const DECREMENT = 'DECREMENT'export const RESET = 'RESET'export const UNDO = 'UNDO'export const REDO = 'REDO'