code: function configureStore( preloadedState = {}, extraMiddleware = [] ) {
  	const enhancers = configureEnhancers( extraMiddleware );
  
  	return createStore( rootReducer, preloadedState, enhancers );
  }
docs: Creates a Redux store.
  
  @param {Object} [preloadedState]  The initial state.
  @param {Array}  [extraMiddleware] Any extra middleware to apply.
  
  @returns {Object} The Redux store.