/**
 * useLiveRegion composable
 *
 * Manages an ARIA live region for screen reader announcements.
 * Creates/reuses a single visually-hidden <div role="status" aria-live="polite"> element
 * in the DOM, and announces content when messages arrive.
 *
 * This matches the React reference implementation's approach to accessibility
 * announcements for message components.
 */
interface UseLiveRegionOptions {
    /** Text to announce to screen readers */
    announcement: string;
    /** Whether the announcement should be made (defaults to true) */
    enabled?: boolean;
}
/**
 * Composable that announces content to screen readers via an ARIA live region.
 *
 * @example
 * ```typescript
 * // In a message component:
 * useLiveRegion({
 *   announcement: `New message: ${messageText}`,
 *   enabled: !props.ignoreLiveRegion,
 * })
 * ```
 */
export declare function useLiveRegion(options: UseLiveRegionOptions): void;
export {};