The view does not refresh after each hot update of the webpack is completed

  node.js, question

This is my webpack configuration file. the problem now is that it has been recompiled every time the source file code has been modified, but the compiled view has not been updated. do you know what the problem is with my configuration? thank you!

var webpack = require('webpack');
var plugins = [
    new webpack.HotModuleReplacementPlugin(),
    new webpack.optimize.CommonsChunkPlugin('common.js')
];
var publicPath = 'http://localhost:8000';

module.exports = {
    entry: [   
        'webpack/hot/dev-server',     
        'webpack-dev-server/client?http://localhost:8000',
        
        './src/index.js'
    ],
    output: {
        path: './lib', //打包输出的路径 
        filename: 'app.js', //打包后的名字
        publicPath: publicPath
    },
    devtool: 'source-map',
    module: {
        loaders: [{
            test: /.jsx?$/,
            loaders: ['react-hot', 'babel?presets[]=es2015&presets[]=react'],
            exclude: /node_modules/
        }, {
            test: /.css$/,
            loaders: ["style", "css"],
            exclude: "/(node_modules|bower_components)/"
        }, {
            test: /.less$/,
            loaders: ["style", "css", "less"],
            exclude: "/(node_modules|bower_components)/"
        }]
    },
    resolve: {
        extensions: ['', '.js', '.jsx', '.css']
    },
    plugins: plugins
};

The same problem often needs to be disconnected and restarted. I don’t know if it is a window file system problem. I want to know if there is such a problem under mac. If it is placed under SSD, it will be greatly improved compared with ordinary hard disks.