Graphorin API reference v0.15.1

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Graphorin API reference / @graphorin/core / / CheckpointPutOptions

Interface: CheckpointPutOptions

Defined in: packages/core/src/contracts/checkpoint-store.ts:118

Stable

Optional atomicity contract for CheckpointStore.put. When expectedLatestId is supplied, the store MUST perform the latest-checkpoint comparison and the insert atomically (single transaction / synchronous critical section) and throw CheckpointConflictError on mismatch - closing the TOCTOU window an engine-level read-then-write cannot. null means "expect no checkpoint for this thread yet"; undefined (or a store that ignores the argument) preserves the unguarded legacy behaviour, which the engine backstops with its own pre-check.

Properties

Property	Modifier	Type	Defined in
expectedLatestId?	readonly	string | null	packages/core/src/contracts/checkpoint-store.ts:119