Webpack operation error, what is the cause of the problem?

let path=require ("path");
let webpack=require ("webpack");
let HtmlWebpackPlugin=require ("html-webpack-plugin");
let CleanWebpackPlugin = require ("clean-webpack-plugin");
let ExtractTextWebpackPlugin=require ("extract-text-webpack-plugin");
let index = new ExtractTextWebpackPlugin (". / css/index.css");
let reset = new ExtractTextWebpackPlugin (". / css/reset.css");

module.exports= {

entry:{
    index:"./src/index.js",
    utils:"./src/utils.js"
},
output:{
    filename:"./js/[name].js",
    path:path.resolve("dist")
},
module:{
    rules:[
        {
            test: /\.css$/,
            use: reset.extract({
                use: "css-loader"
            })
        },
        {
            test: /\.less$/,
            use: index.extract({
                use: "css-loader",
                publicPath:"../"
            })
        },
        {
            test: /\.(jpe?g|png|gif)$/,
            use: [
                {
                    loader: "url-loader",
                    options: {
                        limit: 8192,
                        outputPath: "images/"
                    }
                }
            ]
        },
        {
            test: /\.(htm|html)$/,
            use: "html-withimg-loader"
        },
        {
            test: /\.(eot|ttf|woff|svg)$/,
            use: "file-loader"
        },
        {
            test:/\.js$/,
            //use: "babel-loader",
            include: /src/,
            exclude: /node_modules/
        }
    ]
},
plugins:[
    new CleanWebpackPlugin("dist"),
    new webpack.HotModuleReplacementPlugin(),
    new HtmlWebpackPlugin({
        template:"./src/index.html",
        hash:true
    }),
    reset,
    index
],
devServer: {
    contentBase: "./dist",
    host: "localhost",
    port: 3000,
    open: true,
    hot: true
}

< H2 >}; < / H2 >

above is the code of the webpack.config.js file

{
"name": "demo",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {

"build": "webpack",
"dev": "webpack-dev-server"

},
"keywords": [],
"author": "",
"license": "ISC",
"devDependencies": {

"babel-core": "^6.26.3",
"babel-loader": "^8.0.0",
"babel-preset-env": "^1.7.0",
"babel-preset-es2015": "^6.24.1",
"babel-preset-stage-0": "^6.24.1",
"babel-runtime": "^6.26.0",
"clean-webpack-plugin": "^0.1.19",
"css-loader": "^1.0.0",
"extract-text-webpack-plugin": "^4.0.0-beta.0",
"file-loader": "^2.0.0",
"html-webpack-plugin": "^3.2.0",
"html-withimg-loader": "^0.1.16",
"less": "^3.8.1",
"less-loader": "^4.1.0",
"style-loader": "^0.23.0",
"url-loader": "^1.1.1",
"webpack": "^4.17.1",
"webpack-cli": "^3.1.0",
"webpack-dev-server": "^3.1.6"

}

< H2 >} < / H2 >

above is the code of the package.json file

Why just add {

to the configuration of modules

            test:/\.js$/,
            //use: "babel-loader",
            include: /src/,
            exclude: /node_modules/
        }
         use: "babel-loader"