overly simplistic and dumb cold reload poc

app.js

import coldReload from './cold-reload';

// ...

const cold = coldReload();
const store = configureStore(cold.state);
cold.run(store);

// ...

cold-reload.js

import debounce from 'lodash.debounce';

export default function coldReload({destroy = 1000, key = 'cold', storage = window.sessionStorage}={}) {
  const last = `${key}-last`;
  const now = Date.now();

  if (parseInt(storage.getItem(last), 10) + destroy > now) {
    console.warn('cold storage destroyed');
    storage.removeItem(key);
  } else {
    console.warn(`cold storage found. refresh in less than ${destroy}ms to get rid of it`);
  }
  storage.setItem(last, now);

  return {
    run: store => store.subscribe(debounce(() => storage.setItem(key, JSON.stringify(store.getState())), destroy)),
    state: JSON.parse(storage.getItem(key))
  }
}