webpack.config.prod.js

import path from "path";
import HtmlWebpackPlugin from "html-webpack-plugin";
import WebpackMd5Hash from "webpack-md5-hash";
import MiniCssExtractPlugin from "mini-css-extract-plugin";

export default {
  mode: "production",
  devtool: "source-map",
  entry: {
    vendor: path.resolve(__dirname, "src/vendor"),
    main: path.resolve(__dirname, "src/index")
  },
  target: "web",
  output: {
    path: path.resolve(__dirname, "dist"),
    publicPath: "/",
    filename: "[name].[chunkhash].js"
  },
  optimization: {
    splitChunks: {
      chunks: "all",
      maxInitialRequests: Infinity,
      minSize: 0,
      cacheGroups: {
        vendor: {
          test: /[\\/]node_modules[\\/]/,
          name(module) {
            // get the name. E.g. node_modules/packageName/not/this/part.js
            // or node_modules/packageName
            const packageName = module.context.match(
              /[\\/]node_modules[\\/](.*?)([\\/]|$)/
            )[1];

            // npm package names are URL-safe, but some servers don't like @ symbols
            return `npm.${packageName.replace("@", "")}`;
          }
        }
      }
    }
  },
  plugins: [
    new WebpackMd5Hash(),
    new MiniCssExtractPlugin({
      filename: "[name].[chunkhash].css",
      options: {
        publicPath: "./"
      }
    }),
    new HtmlWebpackPlugin({
      template: "src/index.html",
      minify: {
        removeComments: true,
        collapseWhitespace: true,
        removeRedundantAttributes: true,
        useShortDoctype: true,
        removeEmptyAttributes: true,
        removeStyleLinkTypeAttributes: true,
        keepClosingSlash: true,
        minifyJS: true,
        minifyCSS: true,
        minifyURLs: true
      },
      inject: true,
      // Properties you define here are available in index.html
      // using htmlWebpackPlugin.options.varName
      trackJSToken: "250b45c552ee4cc18eb71c3e82659a89"
    })
  ],
  module: {
    rules: [
      { test: /\.js$/, exclude: /node_modules/, use: ["babel-loader"] },
      {
        test: /\.css$/,
        use: [{ loader: MiniCssExtractPlugin.loader }, { loader: "css-loader" }]
      }
    ]
  }
};