structuredAttrs is enabled

trying https://registry.npmjs.org/prosemirror-history/-/prosemirror-history-1.5.0.tgz
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100  17697 100  17697   0      0 301.6k      0                              0