setup-3.js

// a functional component. Also named container
import {createStructuredSelector} from 'reselect';
import { bindActionCreators } from 'redux'
import { connect }from 'react-redux'
import {App} from '../components/App'
import {getAppUIState} from '../selectors';
import * as actions from '../actions';

const mapDispatchToProps = dispatch => ({
    actions: bindActionCreators(actions, dispatch)
})

const mapStateToProps = createStructuredSelector({
  app: getAppUIState
})

const AppContainer = connect(
  mapStateToProps,
  mapDispatchToProps
)(App)

export default AppContainer