import { Duration } from '../types';
/**
 * Parse an ISO 8601 duration string into an object.
 *
 * The units of duration are not normalized. For example, the string `"P365D"`
 * doesn't get converted to `{ years: 1 }` since not all years are the same
 * length.
 *
 * @example parseISODuration('P365D') // { days: 365 }
 */
export declare const parseISODuration: (duration: string) => Duration;