/**
 * Convert a CSS (string) color into a normalized object that can be used for comparison
 * @param {string} authored
 * @returns {NormalizedColorWithAuthored}
 * @example convert('red')
 */
export function convert(authored: string): NormalizedColorWithAuthored;
/**
 * @param {NormalizedColorWithAuthored} a
 * @param {NormalizedColorWithAuthored} b
 * @returns {number}
 */
export function compare(a: NormalizedColorWithAuthored, b: NormalizedColorWithAuthored): number;
/**
 * Function that sorts colors
 * @param {string} a
 * @param {string} b
 * @returns {number}
 * @example ['red', 'yellow'].sort(sortFn)
 */
export function sortFn(a: string, b: string): number;
/**
 * Sort the `colors` array using `Array.sort()`, so beware that it changes the source input
 * @param {string[]} colors
 * @returns {string[]} sorted
 * @example sort(['red', 'yellow'])
 */
export function sort(colors: string[]): string[];
export type NormalizedColor = {
    hue: number;
    saturation: number;
    lightness: number;
    alpha: number;
};
export type NormalizedColorWithAuthored = NormalizedColor & {
    authored: string;
};