import type { MaybeRefOrGetter } from './_shared';
import type { Ref } from '@stacksjs/stx';
/**
 * Reactive document title.
 * Returns a writable ref synced with document.title.
 * If no argument is provided, reads the current document title.
 *
 * @param newTitle - Optional initial title (or ref/getter)
 */
export declare function useTitle(newTitle?: MaybeRefOrGetter<string>): Ref<string>;