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Add serverSnapshot fallback to useSyncExternalStore #688

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Add serverSnapshot fallback to useSyncExternalStore #688

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81afdc2
Add serverSnapshot fallback to useSyncExternalStore
daveycodez Oct 16, 2025
671c1e6
Make into one liner
daveycodez Oct 16, 2025
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5 changes: 4 additions & 1 deletion packages/react-db/src/useLiveQuery.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,8 @@ const DEFAULT_GC_TIME_MS = 1 // Live queries created by useLiveQuery are cleaned

export type UseLiveQueryStatus = CollectionStatus | `disabled`

const serverSnapshot = { collection: null, version: 0 }

/**
* Create a live query using a query function
* @param queryFn - Query function that defines what data to fetch
Expand Down Expand Up @@ -467,7 +469,8 @@ export function useLiveQuery(
// Use useSyncExternalStore to subscribe to collection changes
const snapshot = useSyncExternalStore(
subscribeRef.current,
getSnapshotRef.current
getSnapshotRef.current,
() => serverSnapshot
)

// Track last snapshot (from useSyncExternalStore) and the returned value separately
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