Setting up mdx runtime on Webpack 5

I was running into some problems when trying to run @mdx-js/runtime on Next.js

I needed to configure next.config.js to ignore fs module

module.exports = {
  reactStrictMode: true,
  webpack: (config, { isServer }) => {
    if (!isServer) {
      config.resolve.fallback = {
        ...config.resolve.fallback,
        fs: false,
      };
    }
    return config;
  },
};