structuredAttrs is enabled

trying https://registry.npmjs.org/prosemirror-changeset/-/prosemirror-changeset-2.4.0.tgz
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100  30946 100  30946   0      0 611.6k      0                              0