/**
 * Lexicographically sortable id that is strictly increasing within a
 * process, even for ids generated in the same millisecond (a per-ms
 * sequence follows the time component). Used for append-only logs where
 * insertion order must survive an `ORDER BY id` tiebreak — `created_at`
 * only has millisecond precision.
 */
export declare function monotonicId(): string;