import type { IsoDuration } from '../../domain.objects/IsoDuration';
import type { IsoDurationShape } from '../../domain.objects/IsoDurationShape';
/**
 * .what = normalizes iso duration to object shape
 * .why = enables operations to work with both string and object formats
 * .note = if input is already object shape, returns as-is
 */
export declare const asIsoDurationShape: (duration: IsoDuration) => IsoDurationShape;