app/reducer.js
import * as topicReducers from './module/topic/reducer'
import * as authReducers from './module/auth/reducer'
import * as commonReducers from './module/common/reducer'
import * as messageReducers from './module/message/reducer'
import * as collectReducers from './module/collect/reducer'
import * as mineReducers from './module/mine/reducer'
export default {
...topicReducers,
...messageReducers,
...authReducers,
...commonReducers,
...collectReducers,
...mineReducers
}