redux last Action

lastAction.js

const reducer = ((state = 0, action) => {
    switch (action.type) {
        case 'INCREMENT': return state + 1
        case 'DECREMENT': return state - 1
        default: return state
    }
})

const initialState = {
    count: 0
}

const lastAction = (state = null, action) => {
  return action;
}
const rootReducer = combineReducers({
  reducer,
  lastAction
});

const store = createStore(rootReducer)

store.subscribe(() => {
    console.log(store.getState().lastAction)// last action 
})

store.dispatch({ type: 'INCREMENT' })
store.dispatch({ type: 'DECREMENT' })