import type { DurationPart, DurationPartsOptions, DurationUnitName } from '../_types/global.js';
export type Unit = {
    name: DurationUnitName;
    short: string;
    ms: number;
};
export declare const UNITS: Unit[];
export declare function cleanNumber(value: number): number;
export declare function findUnit(name: string): Unit | undefined;
export declare function durationParts(milliseconds: number, options?: DurationPartsOptions): DurationPart[];