Add redux devtools to store with middleware

redux.js

import { createStore, applyMiddleware, compose } from 'redux';
import createSagaMiddleware from 'redux-saga'

import rootReducer from './store'


const sagaMiddleware = createSagaMiddleware()

const store = createStore(rootReducer, compose(
    applyMiddleware(sagaMiddleware),
    window.__REDUX_DEVTOOLS_EXTENSION__ ? window.__REDUX_DEVTOOLS_EXTENSION__() : f => f
))