Redux RTK 查询：getDefaultMiddleware 不是函数

Question

从哪里来getDefaultMiddleware？我正在阅读文档，它似乎神奇地出现在配置存储中。虽然这很棒，但它没有进入我的商店，而且......由于这个功能没有导入路径，而且我不知道如何解决这个问题，我可以使用一些指导。

RTK版本："@reduxjs/toolkit": "^1.6.1",

太棒了；

getDefaultMiddleware()我的商店中不存在+我还没有在文档中找到任何与它相关的有用内容。

这是我得到的错误：

这是我的store.ts

import { Action, configureStore, ThunkAction } from '@reduxjs/toolkit';
import { setupListeners } from '@reduxjs/toolkit/query';
import { myApi } from './services/api';

import authorReducer from './slices/authorSlice';
import transcriptReducer from './slices/transcriptSlice';

export const store = configureStore({
  reducer: {
    [myApi.reducerPath]: myApi.reducer,
    middleware: (getDefaultMiddleware) =>
      // "This expression is not callable."
      getDefaultMiddleware().concat(myApi.middleware),
    author: authorReducer,
    transcript: transcriptReducer,
  },
});

setupListeners(store.dispatch);

// Infer the `RootState` and `AppDispatch` types from the store itself
export type RootState = ReturnType<typeof store.getState>;
export type AppDispatch = typeof store.dispatch;
export type AppThunk<ReturnType = void> = ThunkAction<
  ReturnType,
  RootState,
  unknown,
  Action<string>
>;

这是我的api.ts

import { createApi, fetchBaseQuery } from '@reduxjs/toolkit/query/react';

const apiEndpoint ='http://localhost:5000';

export const myApi = createApi({
  reducerPath: 'myApi',
  baseQuery: fetchBaseQuery({ baseUrl: apiEndpoint }),
  endpoints: builder => ({
    getFileById: builder.query<any, { id: string; fileId: string }>({
      query: arg => {
        const { id, fileId } = arg;
        return `/some/endpoint/with/two/${id}/pathvariables/${fileId}`;
      },
    }),
  }),
});

// RTK Query will automatically generate hooks for each endpoint query
export const { useGetFileByIdQuery } = myApi;

Answer 1

回答：

我在reducer: { ... }.​ 我需要将它移到该减速器对象之外。问题解决了。

export const store = configureStore({
  reducer: {
    [myApi.reducerPath]: myApi.reducer,
    author: authorReducer,
    transcript: transcriptReducer,
  },
  middleware: getDefaultMiddleware =>
    getDefaultMiddleware().concat(myApi.middleware),
});