import { IsoDuration } from './iso-types';
/**
 * This method gives the absolute value of duration. It returns a new IsoDuration with all the fields
 * having the same magnitude as those of duration, but positive.
 * @param {IsoDuration} duration
 * @returns a new IsoDuration that is always positive.
 */
declare function abs(duration: IsoDuration): IsoDuration;
export default abs;