CODEWITHSUNDEEP
javascriptreactjsreduxreact-router-redux
Noah
Noah

Reputation: 59

React+Redux - Expected the reducer to be a function

I'm trying to implement redux in my universal app, but I've some problems with redux. I've this configureStore function:

import { createStore, applyMiddleware, compose } from 'redux';
import thunkMiddleware from 'redux-thunk';
import createLogger from 'redux-logger'
import rootReducer from '../reducers/index';
import { routerMiddleware } from 'react-router-redux';

export default function configureStore(history, initialState) {
  const reduxRouterMiddleware = routerMiddleware(history);
  let finalCreateStore;

  if (__DEVELOPMENT__ && __CLIENT__ && __DEVTOOLS__) {
    const { persistState } = require('redux-devtools');
    const DevTools = require('../containers/DevTools/DevTools');

    finalCreateStore = compose(
      applyMiddleware(thunkMiddleware)(createStore),
      window.devToolsExtension ? window.devToolsExtension() : DevTools.instrument(),
      persistState(window.location.href.match(/[?&]debug_session=([^&]+)\b/))
    )(createStore);
  }
  else {
    finalCreateStore = applyMiddleware(thunkMiddleware)(createStore);
  }

  const store = finalCreateStore(rootReducer, initialState);

  if (__DEVELOPMENT__ && module.hot) {
    module.hot.accept(rootReducer, () => {
      store.replaceReducer(rootReducer);
    });
  }

  return store;
}

And then I've my rootReducer file that looks like this:

import { combineReducers } from 'redux';
import environment from './environment';
import general from './general';
import alert from './alert';
import user from './user';
import { routerReducer } from 'react-router-redux'


const rootReducer = combineReducers({
  environment,
  general,
  alert,
  user,
  routing: routerReducer
});

export default rootReducer;

The problem is that I get this error: Expected the reducer to be a function. I've googled and searched on StackOverflow(where there are some similar problems), but the answers doesn't works in my case.

So, what I'm doing wrong ? and why ?

Thanks.

Upvotes: 0

Views: 2099

Answers (2)

Malcolm Yu
Malcolm Yu

Reputation: 196

try this:

finalCreateStore = compose(
    // you write more than one createStore here
    applyMiddleware(thunkMiddleware),
    window.devToolsExtension ? window.devToolsExtension() : DevTools.instrument(),
    persistState(window.location.href.match(/[?&]debug_session=([^&]+)\b/))
)(createStore);

Upvotes: 2

rajatppn
rajatppn

Reputation: 460

Have you tried 

import { combineReducers } from 'redux';
import environment from './environment';
import general from './general';
import alert from './alert';
import user from './user'; 
import { routerReducer } from 'react-router-redux'


export const rootReducer = combineReducers({
  environment: environment,
  general: general,
  alert: alert,
  user: user,
 routing: routerReducer
});

export default rootReducer;

Upvotes: 0

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