× TypeError:中间件不是函数 [英] × TypeError: middleware is not a function

问题描述

错误图像好的，所以我正在开始一个新项目，这是我第一次遇到这种情况/我不断收到错误说明 ×类型错误:中间件不是我检查过依赖项的函数，我的代码看起来一切正常，没有任何问题，请帮忙

image of the ERROR OK so I'm starting a new project and this is the first time that this has happened to me/ I keep getting an error stating × TypeError: middleware is not a function i checked dependencies and everything seems fine gone over my code nothing seems wrong please help

我尝试删除模块并重新安装它们，我还检查了我一直在做的一个通过的应用程序，因为我刚刚开始，代码看起来相同，但似乎有效.

I tried deleting the modules and installing them again, I also checked on a passed application I've been doing and since I'm just starting out the code looks identical but that seems to work.

import { createStore, applyMiddleware } from "redux";

import promiseMiddleware from "redux-promise-middleware";
import userReducer from "./ducks/userReducer";

const middleware = applyMiddleware(promiseMiddleware());
const store = createStore(userReducer, middleware);

    export default store;

<小时>

import React, { Component } from "react";
import routes from "./routes";
import { Provider } from "react-redux";
import store from "./redux/store";
class App extends Component {
render() {
    return (
        <Provider store={store}>
            <div className="App">{routes}</div>
        </Provider>
    );
}
}

export default App;

<小时>

推荐答案

当你使用applyMiddleware函数时，中间件不应作为函数调用.

When you use the function applyMiddleware, the middlewares shouldn't be called as functions.

所以代替:

const middleware = applyMiddleware(promiseMiddleware());

做:

const middleware = applyMiddleware(promiseMiddleware);

参见 https://redux.js.org/api/applymiddleware#example-custom-logger-middleware 了解更多详情.

See https://redux.js.org/api/applymiddleware#example-custom-logger-middleware for more details.

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