通过 webpack 编译时出现此错误 Unexpected token, expected ","答案

【问题标题】：Getting this error on compiling through webpack Unexpected token, expected ","通过 webpack 编译时出现此错误 Unexpected token, expected ","
【发布时间】：2020-03-16 05:39:32
【问题描述】：

在编译此代码时，我收到此错误 SyntaxError: Unexpected token, expected ","。我希望你能帮我解决这个问题。在线出错(13:39)

import { createStore, applyMiddleware } from 'redux';
import { composeWithDevTools } from 'redux-devtools-extension';
import thunk from 'redux-thunk';
import rootReducers from './reducers';

const initialState = {};

const middleware = [thunk];

const store = createStore({
    rootReducers,
    initialState,
    composeWithDevTools(applyMiddleware(...middleware))
});

export default store;

谢谢

【问题讨论】：

在composeWithDevTools(applyMiddleware(...middleware))这一行之后添加comma ,
这不是语法错误

标签： reactjs redux react-redux redux-thunk redux-devtools-extension

【解决方案1】：

您对createStore 的呼叫是错误的。它应该是参数列表，而不是对象：

const store = createStore(rootReducers, initialState, composeWithDevTools(applyMiddleware(...middleware)));

正确的函数签名是：

 createStore(reducer, [preloadedState], [enhancer])

请参阅文档here

【讨论】：