Warning: `property not found on root doc $$typeof`

[Siddhartha]

When exporting the Synced Store object in next.js received the following warning,

property not found on root doc $$typeof

Seems like we need to add $$typeof in there

https://github.com/YousefED/SyncedStore/blob/main/packages/core/src/doc.ts#L47

Please confirm if that is correct I can submit a pull request.

[Yousef]

This might be right. If you add a PR with a unit test I'd be happy to merge!