import type { TimeUnit } from '../../unit';
/**
 * Resolve a loose alias string (e.g. `'day'`, `'sec'`, `'minutes'`) to
 * its canonical `TimeUnit` value. Intended for user-facing functions
 * that accept alias input; returns `null` when the value is not a
 * recognized alias or canonical unit.
 *
 * @param value		Candidate alias or canonical unit string.
 * @returns			Canonical `TimeUnit` when recognized, otherwise `null`.
 *
 * @category Time Units
 */
export declare function timeUnitFromAlias(value?: unknown): TimeUnit | null;