/** Claim the next event sequence number for a workflow. */
export declare function claimNextSequence(sequenceCounters: Map<string, number>, workflowId: string): number;
/** Evict the oldest workflow affinity entry when the cache grows beyond its cap. */
export declare function evictOldestAffinityEntries(workerAffinity: Map<string, string>, maxEntries: number): void;
/** Restore an extended deadline back into the tracker when a stale heap entry expires. */
export declare function restoreExtendedDeadline(deadlineTracker: {
    add(entry: {
        operationId: string;
        deadline: number;
    }): void;
}, operationId: string, deadline: number): void;
/** Restore a stale heap entry when the recorded deadline is still in the future. */
export declare function restoreExtendedDeadlineIfStillActive(deadlineTracker: {
    add(entry: {
        operationId: string;
        deadline: number;
    }): void;
}, operationId: string, deadline: number, now: number): boolean;