我的 react 和 redux 项目出错了。我没有找到如何解决它。

这是错误信息：

The previous state received by the reducer has unexpected type of "Function". Expected argument to be an object with the following keys: "posts", "sidebar"

错误信息

代码：

商店.js：

import { createStore, applyMiddleware } from 'redux'
import logger from 'redux-logger'
import thunk from 'redux-thunk'

import reducers from '../reducers/index'

const middleware = process.env.NODE_ENV === 'production' ? [ thunk ] : [ thunk, logger() ]

const store = createStore(reducers, applyMiddleware(...middleware),  window.devToolsExtension ? window.devToolsExtension() : f => f)

export default store

减速器/ index.js：

import { combineReducers } from 'redux'
import posts from './posts'
import sidebar from './sidebar'

const rootReducer = combineReducers({
    posts,
    sidebar
})

export default rootReducer

减速器/posts.js：

import {
    RECEIVE_POSTS,
    RECEIVEING_POSTS
} from '../containers/index'

const initialState = {
    posts: [],
    post: {},
    message: 'done'
}

const post = (state = initialState, action) => {
    switch (action.type) {
        case RECEIVE_POSTS:
            return Object.assign({}, state, {
                posts: action.posts
            })
            break
        case RECEIVEING_POSTS:
            return Object.assign({}, state, {
                message: 'loading'
            })
        default:
            return state
    }
}

export default post

减速器/sidebar.js

import {
    TOGGLE_SIDEBAR
} from '../containers/index'

const initialState = {
    show: true
}

const sidebar = (state = initialState, action) => {
    switch (action.type) {
        case TOGGLE_SIDEBAR:
            return Object.assign({}, state, {
                show: ! state.show
            })
            break
        default:
            return state
    }
}

export default sidebar

我阅读了 redux 示例，但我不知道我的代码有什么问题。它只是抛出错误。

那些代码很像 redux 的例子！！！

谢谢你的耐心。