无法将forkJoin与redux一起使用-可观察

npm install redux-observable

import { combineEpics } from 'redux-observable';
import { forkJoin } from 'rxjs';
import { ofType } from 'redux-observable';
import { mergeMap } from 'rxjs/operators';

const fetchDataEpic = (action$, state$) =>
  action$.pipe(
    ofType('FETCH_DATA'),
    mergeMap(action =>
      forkJoin(
        // 在这里使用forkJoin来合并多个可观察对象
        // 并在它们都完成时发出最后一个值
        // 这里可以是你的异步操作
      )
    )
  );

export const rootEpic = combineEpics(fetchDataEpic);

import { createStore, applyMiddleware } from 'redux';
import { createEpicMiddleware } from 'redux-observable';
import { rootEpic } from './epics';
import rootReducer from './reducers';

const epicMiddleware = createEpicMiddleware();

const store = createStore(
  rootReducer,
  applyMiddleware(epicMiddleware)
);

epicMiddleware.run(rootEpic);

export default store;

import { fetchData } from './actions';

store.dispatch(fetchData());