与ReactReduxFirebaseProvider工作时火力未定义

Question

我试着从反应 - 终极版V2至V3迁移并开始使用ReactReduxFirebaseProvider。但我不知道为什么我得到：

Line 22:  'firebase' is not defined  no-undef

这是我的代码：

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import registerServiceWorker from './registerServiceWorker';
import { createStore, applyMiddleware, compose } from 'redux'
import rootReducer from './store/reducers/rootReducer'
import { Provider } from 'react-redux'
import thunk from 'redux-thunk'
import { createFirestoreInstance, getFirestore } from 'redux-firestore'
import { ReactReduxFirebaseProvider, getFirebase } from 'react-redux-firebase'
import fbConfig from './config/fbConfig'


const store = createStore(rootReducer,
  compose(
    applyMiddleware(thunk.withExtraArgument({ getFirebase, getFirestore }))
  )
);

const rrfProps = {
  firebase,
  config: fbConfig,
  dispatch: store.dispatch,
  createFirestoreInstance
}

ReactDOM.render(
  <Provider store={store}>
    <ReactReduxFirebaseProvider {...rrfProps}>
      <App />
    </ReactReduxFirebaseProvider>
  </Provider>, document.getElementById('root'));
registerServiceWorker();

有人能指出我什么我做错了正确的方向？