/**
 * Given a CSS stylesheet, parses it and returns an object with all top level CSS variables and their values.
 *
 * @function getCssVariables
 * @param {string} css - CSS to parse
 * @return {Record<string, string>} Key/value pairs of found variables name and their values
 */
export declare const getCssVariables: (css: string) => Record<string, string>;