Merge dev and prod to index in store

src/store/configureStore.js

@@ -1,5 +1,32 @@
-if (process.env.NODE_ENV === 'production') {
-  module.exports = require('./configureStore.prod');
-} else {
-  module.exports = require('./configureStore.dev');
+// This file merely configures the store for hot reloading.
+// This boilerplate file is likely to be the same for each project that uses Redux.
+// With Redux, the actual stores are in /reducers.
+
+import { createStore, compose } from 'redux';
+import rootReducer from '../reducers';
+
+const isProduction = 'production' === process.env.NODE_ENV;
+
+let enhancer;
+
+if (!isProduction) {
+  enhancer = compose(
+    // Add other middleware on this line...
+    window.devToolsExtension ? window.devToolsExtension() : f => f // add support for Redux dev tools
+  );
+}
+
+
+export default function configureStore(initialState) {
+  const store = createStore(rootReducer, initialState, enhancer);
+
+  if (!isProduction && module.hot) {
+    // Enable Webpack hot module replacement for reducers
+    module.hot.accept('../reducers', () => {
+      const nextReducer = require('../reducers').default; // eslint-disable-line global-require
+      store.replaceReducer(nextReducer);
+    });
+  }
+
+  return store;
 }