src/admin/webpack.config.js

'use strict';

// Fix: webpack5 does not include Node.js core polyfills by default
// markdown-it requires 'punycode' which is a deprecated Node.js built-in
module.exports = (config) => {
  config.resolve.fallback = {
    ...(config.resolve.fallback || {}),
    punycode: require.resolve('punycode/'),
  };
  return config;
};