6

在我的 redux js 应用程序（google appengine 后端）中，当打开包含 Root 组件的页面时，我收到以下警告和错误消息。

警告：失败的 propType：提供给store的类型无效的道具，预期的。检查. bundle.js:6169functionProviderobjectRoot

警告：失败的 propType：提供给store的类型无效的道具，预期的。检查. bundle.js:6169functionDevToolsWrapperobjectRoot

警告：上下文类型失败：提供给store的类型的子上下文无效，应为。检查. bundle.js:6169functionProviderobjectRoot

警告：上下文类型失败：提供给store的类型的上下文无效，预期为。检查.functionConnect(AsyncApp)objectProvider

Uncaught TypeError: store.getState is not a function

这是 react-redux 的 lib/components/createConnect.js 中发生错误的地方。

    function computeStateProps(store, props) {
      var state = store.getState();  <<<<< The error occurs here.
      var stateProps = shouldUpdateStateProps ? finalMapStateToProps(state, props) : finalMapStateToProps(state);

      _invariant2['default'](_utilsIsPlainObject2['default'](stateProps), '`mapStateToProps` must return an object. Instead received %s.', stateProps);
      return stateProps;
    }

在断点处，就在此错误发生之前，console.log(store) 将返回此内容。

function (reducer, initialState) {
      var store = next(reducer, initialState);
      var _dispatch = store.dispatch;
      var chain = [];

      var middlewareAPI = {
        getState: store.…

但是，当我使用 Node 后端运行完全相同的代码时，console.log(store) 会改为返回此对象。

devToolsStore: Object
dispatch: (action)
getReducer: getReducer()
getState: getState()
replaceReducer: replaceReducer(nextReducer)
subscribe: subscribe(listener)

我的根组件和 configureStore.js 如下所示：

import React, { Component } from 'react';
import { Provider } from 'react-redux';
import configureStore from '../store/configureStore';

import { createStore, applyMiddleware, combineReducers, compose } from 'redux';
import { DevTools, DebugPanel, LogMonitor } from 'redux-devtools/lib/react';


import AsyncApp from './AsyncApp';

const store = configureStore();

export default class Root extends Component {
  render() {
return (
 <div>
  <Provider store={store}>
    {() => <AsyncApp />}
  </Provider>
  <DebugPanel top right bottom>
    <DevTools store={store} monitor={LogMonitor} />
  </DebugPanel>
</div>
);
}
}

configureStore.js

import { createStore, applyMiddleware, combineReducers, compose } from "redux";
import thunkMiddleware from "redux-thunk";
import loggerMiddleware from "redux-logger";
import rootReducer from "../reducers";
import thunk from 'redux-thunk';
import { devTools, persistState } from 'redux-devtools';

const finalCreateStore = compose(
    applyMiddleware(thunkMiddleware),
    devTools(),
    persistState(window.location.href.match(/[?&]debug_session=([^&]+)\b/)),
    createStore
);

export default function configureStore(initialState) {
  return finalCreateStore(rootReducer, initialState);
}
4

1 回答 1

9

我的猜测是您正在运行较旧的示例代码。Redux 2.0函数 API发生了重大变化compose()。

代替

const finalCreateStore = compose(
    applyMiddleware(thunkMiddleware),
    devTools(),
    persistState(window.location.href.match(/[?&]debug_session=([^&]+)\b/)),
    createStore
);

你可能想要

const finalCreateStore = compose(
    applyMiddleware(thunkMiddleware),
    devTools(),
    persistState(window.location.href.match(/[?&]debug_session=([^&]+)\b/))
)(createStore);
于 2015-10-01T16:44:45.050 回答