webpack.prod.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');

module.exports = {
  mode: 'production',
  entry: './react/index.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: "build/[name].js",
  },
  devtool: 'source-map',
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env', '@babel/preset-react'],
          },
        },
      },
      {
        test: /\.(png|svg|jpg|jpeg|gif)$/i,
        type: 'asset/resource',
      },
      {
        test: /\.css$/i,
        use: [MiniCssExtractPlugin.loader, 'css-loader'],
      },
    ],
  },
  plugins: [
    new CleanWebpackPlugin(),
    new MiniCssExtractPlugin({
      filename: 'styles.[contenthash].css',
    }),
    new HtmlWebpackPlugin(),
  ],
  target: 'electron-renderer',
  optimization: {
    minimize: true,
    splitChunks: {
      chunks: 'all',
    },
  },
  stats: {
    chunks: false,
  },
};