here_be_dragons/demo/www/webpack.config.js

const CopyWebpackPlugin = require("copy-webpack-plugin");
const path = require('path');

module.exports = {
  entry: "./bootstrap.js",
  output: {
    path: path.resolve(__dirname, "../../docs"),
    filename: "bootstrap.js",
  },
  mode: "development",
  plugins: [
    new CopyWebpackPlugin(['index.html', { from: 'assets', to: 'assets' }])
  ],
};