import {createStore} from 'redux';
import app from 'app/redux/reducers';

export const store = createStore(app, {});

export const observeStore = (store, select, onChange) => {
    let currentState;

    const handleChange = () => {
        let nextState = select(store.getState());
        if (nextState !== currentState) {
            currentState = nextState;
            onChange(currentState);
        }
    };

    const unsubscribe = store.subscribe(handleChange);
    handleChange();
    return unsubscribe;
};