/**
 * Attach deterministic, duplicate-safe React keys to a rendered list.
 *
 * Content identifies an item across insertions and reorders; the occurrence
 * suffix keeps intentionally duplicated rows unique without falling back to an
 * array index.
 */
export declare function withOccurrenceKeys<T>(items: readonly T[], contentKey: (item: T) => string): Array<{
    key: string;
    item: T;
}>;