structuredAttrs is enabled

trying https://registry.npmjs.org/prosemirror-transform/-/prosemirror-transform-1.12.0.tgz
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100  75331 100  75331   0      0  1.30M      0                              0