High Order Store for Web Workers

Web-Worker-HOS.js

export const createSubscriber = (emmiter, store) => handler => {
  emmiter.addEventListener('message', (message) => handler(message.data));
  if (store) store.subscribe(handler);
};

export const createDispatcher = (emmiter, store) => action => {
  emmiter.postMessage(action);
  if (store) store.dispatch(action);
};

export const broadcastStore = (emmiter) => {
  return (createStore) => (reducer, preloadedState, enhancer) => {
    const store = createStore(reducer, preloadedState, enhancer)
    const dispatch = createDispatcher(emmiter, store);
    const subscribe = createSubscriber(emmiter, store);
    return {
      ...store,
      dispatch,
      subscribe
    };
  }
}