无法处理错误:在redux承诺中间件中，“中间件不是一个函数”？

Question

我试图在我的应用程序中使用redux承诺中间件，但是当我试图运行我的应用程序时，错误会带来一条错误信息：“中间件不是函数，中间件是空的”。

--我尝试使用没有函数的中间件，就像Redux异步文档中所建议的那样，但是仍然会出现错误。

configureStore.js

import { createStore, applyMiddleware } from 'redux'
import app from './reducers/index';
import PromiseMiddleware from 'redux-promise-middleware';

const configureStore = () => {
    let middleware = applyMiddleware(PromiseMiddleware());
    let store = createStore(app, middleware);
    return store
};

export default configureStore;

index.js

import React from 'react'
import { AppRegistry } from 'react-native';
import App from './App';
import { Provider } from 'react-redux'
import configureStore from './configureStore'

const store = configureStore();

const ReduxMiddleware = () => {
    <Provider store={store}>
        <App />
    </Provider>
}

AppRegistry.registerComponent('ReduxMiddleware', () => ReduxMiddleware);

请任何人，告诉我为什么我要面对这个错误。我是新来的..

Answer 1

import promiseMiddleware from 'redux-promise-middleware';

composeStoreWithMiddleware = applyMiddleware(
   promiseMiddleware,
)(createStore);

而不是: PromiseMiddleware()

(非大写和w/o () )