Actions and Action creators in Redux

Action is an object. So whenever you dispatch actions, you’d have to give dispatch() an action object (with the type that we are expecting), like so:

1dispatch({ type: 'DECREMENT' })

If you don’t save it like so

1const DECREMENT = 'DECREMENT'

you are

• prone to typos and spelling errors
• you wouldn’t know which types exist because they haven’t been saved before hand (and so it wouldn’t autocomplete either)
• the next time you want to change an action type, you’d have to change it in place everywhere it’s used. If you save it as a contant, then you only update the constant in one place