import type { Directive } from '../types';
/**
 * Directive to manage focus trapping by setting the `inert` attribute on sibling elements.
 * This is useful for modal dialogs or overlays where interaction should be limited to a specific subtree.
 *
 * - Recursively traverses up the DOM tree.
 * - Sets `inert` on all siblings except the target element and `<script>` tags.
 * - Use `data-agnos-ignore-inert` to avoid inert attribute for a specified element.
 *
 * Takes boolean or undefined as value:
 * - `true` or `undefined`: Apply inert to siblings.
 * - `false`: Do not apply inert to siblings.
 *
 * Automatically reverts when the target element changes or is removed.
 */
export declare const siblingsInert: Directive<boolean | undefined>;