Coincidentally, Alephjs (https://github.com/alephjs/aleph.js https://github.com/alephjs/aleph.js) added a commit hours ago that also seems to solve this particu

Coincidentally, Alephjs (https://github.com/alephjs/aleph.js https://github.com/alephjs/aleph.js) added a commit hours ago that also seems to solve this particular problem for React. So now there's a React hook (useDeno) that takes a callback that is only executed on the server-side, and the returned value is sent back to the client side transparently.