undefined value throws RangeError: Field name does not exist exception

[danielwii]

let autoFields   = autoMerge.init();
autoFields       = autoMerge.change(autoFields, 'v0-init', (doc) => {
  doc.fields = { name: undefined };
});

throws RangeError: Field name does not exist: name
runkit

[ept]

Thanks for your report, @danielwii. Automerge doesn't support the use of undefined in data, since it doesn't exist in JSON. Please use null instead.

I have made a change f7e739a so that Automerge throws a more helpful error message when an unsupported datatype is used.