/**
 * Hold an accepted upstream completion batch while one of its source sessions
 * has newer completion input durably next in line. The receipts are already
 * accepted and visible; delaying only their engine dispatch lets the source's
 * final drain-boundary result join the same lossless parent turn. A different
 * queued work kind is a causal fence and never delays the relay.
 */
export declare function shouldHoldParentCompletionQueueDispatch(queueItemId: string): boolean;
export declare function listReleasableParentCompletionQueuesForSource(sourceSessionId: string): Array<{
    queueItemId: string;
    sessionKey: string;
}>;
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