tgasson

For @defer, the transport is a stream[2] where subsequent payloads are tracked ("pending") and as those payloads arrive they are "patched" into the existing data at the appropriate path.

Both of these are effectively implementations of this Progressive JSON concept.

I can picture a future where both the JSX and object payloads are delivered progressively over the wire in the same stream, and hydrate React and Relay stores alike. That could potentially simplify and eliminate the need for Relay to synchronise it's own updates with React. It would also potentially be a suitable compile target for decoupling, React taking ownership of a normalised reactive object store (with state garbage collection which is a hard problem for external stores to solve) with external tools like Relay and TanStack Query providing the type-generation & fetching implementation details.

Using `new Promise()` in the client-side store would also mean you could potentially shrink the component API to this. `useFragment(fragment IssueAssignee on Issue { assignee { name }}, issue)` could instead be `const assignee = use(issue.assignee)` and would suspend (or not) appropriately.