import { Editor } from '@tiptap/react';
/**
 * Custom hook to manage speech synthetisis.
 * @returns {
 * `isActivated`: truthy boolean when speech synthetisis is activated,
 * `toggle`: an imperative function to toggle the `isActivated` value,
 * }
 */
export declare const useSpeechSynthetisis: (editor: Editor | null) => {
    isActivated: boolean;
    toggle: () => boolean;
};