webpack.config.prod.js

const path = require('path');
const UglifyJsPlugin = require("uglifyjs-webpack-plugin");
const OptimizeCSSAssetsPlugin = require("optimize-css-assets-webpack-plugin");
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
module.exports = {
  entry: './src/index.js',
  output: {
    path: __dirname + '/dist',
    publicPath: './',
    filename: 'bundle.js'
  },
  optimization: {
    splitChunks: {
      chunks: 'all'
    },
    minimizer: [
      new UglifyJsPlugin({
        cache: true,
        parallel: true,
        sourceMap: false // set to true if you want JS source maps
      }),
      new OptimizeCSSAssetsPlugin({})
    ]
  },
  // devServer configure
  devServer: {
    contentBase: path.join(__dirname, 'dist'),
    compress: true,
    port: 4200
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        use: 'babel-loader',
        exclude: /node_modules/
      },
      {
        test:/\.(s*)css$/,
        use:[{
          loader: MiniCssExtractPlugin.loader,
					options: {
						name:'style.css'
					}
        },
        'css-loader', 'sass-loader'],
        exclude: /node_modules/
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        use: [{
            loader: 'file-loader',
            options: {
              name: '[name].[ext]',
              outputPath:'assets/images'
            }
          }]
      }
    ]
  },
  plugins: [
    // new HtmlWebpackPlugin({
    //   template: './src/template-index.html'
    // }),
    new MiniCssExtractPlugin({
      // Options similar to the same options in webpackOptions.output
      // both options are optional
      path:  'dist/',
      filename: 'css/style.css'
    })
 
  
  ],
  devtool: 'false'
};