redux-devtools/packages/redux-devtools-remote/examples/toggle-monitoring/store/configureStore.js

import { createStore, applyMiddleware, compose } from 'redux';
import thunk from 'redux-thunk';
import invariant from 'redux-immutable-state-invariant';
import devTools from 'remote-redux-devtools';
import reducer from '../reducers';
import {
  START_MONITORING,
  STOP_MONITORING,
  SEND_TO_MONITOR,
} from '../actions/monitoring';

export default function configureStore(initialState) {
  const enhancer = compose(
    applyMiddleware(invariant(), thunk),
    devTools({
      realtime: false,
      startOn: START_MONITORING,
      stopOn: STOP_MONITORING,
      sendOn: SEND_TO_MONITOR,
      sendOnError: 1,
      maxAge: 30,
    }),
  );

  const store = createStore(reducer, initialState, enhancer);

  if (module.hot) {
    // Enable Webpack hot module replacement for reducers
    module.hot.accept('../reducers', () => {
      const nextReducer = require('../reducers').default;
      store.replaceReducer(nextReducer);
    });
  }

  return store;
}