webpack.config.js

const path = require('path');

module.exports = {
  mode: 'development',  // Specify the mode here
  entry: './src/index.js',
  output: {
    filename: 'bundle.js',
    path: path.resolve(__dirname, 'dist'),
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env'],
          },
        },
      },
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader'],
      },
    ],
  },
  resolve: {
    alias: {
      '@': path.resolve(__dirname, 'src'),
    },
  },
  devServer: {
    static: [
      {
        directory: path.join(__dirname, 'dist'),
        publicPath: '/',
      },
      {
        directory: path.join(__dirname, 'src/themes'),
        publicPath: '/themes',
      }
    ],
    compress: true,
    port: 9000,
  },
};