structuredAttrs is enabled

trying https://registry.npmjs.org/@astrojs/mdx/-/mdx-8.0.0.tgz
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100   9280 100   9280   0      0 101.8k      0                              0