import { ReadonlyObservable } from '@usels/core';

type ContrastPreference = "more" | "less" | "custom" | "no-preference";
type UsePreferredContrastReturn = ReadonlyObservable<ContrastPreference>;
/**
 * Framework-agnostic reactive `prefers-contrast` tracker.
 *
 * Composes three `createMediaQuery` calls (`more`, `less`, `custom`) and
 * exposes a computed `Observable` mapping them to the matching preference
 * name, or `'no-preference'`. Must be called inside a `useScope` factory.
 */
declare function createPreferredContrast(): UsePreferredContrastReturn;

export { type ContrastPreference, type UsePreferredContrastReturn, createPreferredContrast };