import type { CacheField as CacheFieldType } from "@excel/pivot-table";
/**
 * Format a Date for OOXML pivot cache output.
 * Excel expects `"2024-01-15T00:00:00"` — no milliseconds, no trailing "Z".
 */
declare function formatDateForExcel(date: Date): string;
/**
 * Render a single `<cacheField>` element as an XML string.
 *
 * This is a pure data-in → string-out transformation with no state or lifecycle,
 * so it is a plain function rather than a class.
 */
declare function renderCacheField(cf: CacheFieldType): string;
export { renderCacheField, formatDateForExcel };
