/**
 * A screen reader announcer, compatible with the announce function from
 * @material/dom/announce.js.
 *
 * @param message The text to announce with the screen reader.
 * @param options The options, including "priority" and "ownerDocument".
 */
export declare function announce(message: string, options?: {
    priority?: 'polite' | 'assertive';
    ownerDocument?: Document;
}): void;