export interface SpeechSynthesisState {
    speak: (text: string, opts?: Partial<SpeechSynthesisUtterance>) => void;
    cancel: () => void;
    pause: () => void;
    resume: () => void;
    speaking: boolean;
    pending: boolean;
    paused: boolean;
    voice?: SpeechSynthesisVoice;
}
/**
 * A hook that provides access to system voices.
 * @returns Array of available speech synthesis voices
 */
export declare function useSystemVoices(): SpeechSynthesisVoice[];
/**
 * A hook that provides speech synthesis functionality.
 * @returns Object containing speech synthesis controls and state
 *
 * @example
 * const { speak, pause, resume } = useSpeechSynthesis();
 * speak('Hello world', { rate: 1.5 });
 */
export declare function useSpeechSynthesis(): SpeechSynthesisState;