import { ComputedRef } from 'vue';
/**
 * Returns a reactive boolean indicating if the current theme is dark mode.
 *
 * This hook reacts automatically to theme changes, allowing components
 * to adjust their UI when dark mode is active.
 *
 * @returns {ComputedRef<boolean>} True if the current theme is 'dark'.
 */
export declare function useIsDarkModeActive(): ComputedRef<boolean>;