structuredAttrs is enabled

trying https://registry.npmjs.org/micromark-extension-math/-/micromark-extension-math-3.1.0.tgz
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100  11857 100  11857   0      0 217.6k      0                              0