structuredAttrs is enabled

trying https://registry.npmjs.org/prosemirror-changeset/-/prosemirror-changeset-2.4.1.tgz
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100  31000 100  31000   0      0 551.2k      0                              0