import type { TimeUnit } from "../types/time/timeUnit";
import type { TimeUnitShort } from "../types/time/timeUnitShort";
/**
 * Normalize time unit.
 * @param unit Time unit
 * @param to "long" or "short"
 * @returns Normalized time unit
 */
export declare function normalizeTimeUnit(unit: TimeUnit | TimeUnitShort, to: "long"): TimeUnit;
export declare function normalizeTimeUnit(unit: TimeUnit | TimeUnitShort, to: "short"): TimeUnitShort;