The merged entity (canonical + patch overlay) or null when not yet loaded.
Raw EntityState slice for advanced use (isFetching, stale, lastFetched).
Per-entity fetch error string from the graph, or null.
true while the initial or background fetch is in-flight.
true only during background SWR refetch (data already present).
Imperatively trigger a refetch, bypassing staleness checks.
Typed EntityError instance (TerminalError | TransientError) so
consumers can instanceof-check the failure mode without string parsing.
Return value of
createEntity. All fields are SolidJS signals (fine-grained, no re-render of unrelated parts).