import type { Transform } from 'style-dictionary/types';
/**
 * @description converts duration tokens string value to number with `ms` unit
 * @type value transformer — [StyleDictionary.ValueTransform](https://github.com/amzn/style-dictionary/blob/main/types/Transform.d.ts)
 * @matcher matches all tokens of $type `duration`
 * @transformer returns a css duration
 */
export declare const durationToCss: Transform;