borisd

const reducer = (state, action) => action.type == 'INC' 
  ? Object.assign({}, state, { counter: state.counter + 1 })
  : state;

const store = createStore(reducer, { counter: 1 });

const unsubscribe = store.subscribe(() => console.log('Counter: ' + store.getState().counter));

store.dispatch({ type: 'INC' })
store.dispatch({ type: 'INC' })

borisd

import store from 'store/store';

const connect = (mapStateToProps) => (Component) => {
  class Connect extends React.Component {
    constructor() {
      super();
      this.state = {};
    }

    componentDidMount() {