import { TTSProvider, SpeakOptions, VoiceInfo, SpeechError, OpenAIConfig } from './types.js';
export declare class OpenAIProvider implements TTSProvider {
    readonly isSupported: boolean;
    private _config;
    private _abortController;
    private _startCbs;
    private _endCbs;
    private _errorCbs;
    constructor(config: OpenAIConfig);
    onStart(cb: () => void): void;
    onEnd(cb: () => void): void;
    onError(cb: (err: SpeechError) => void): void;
    speak(options: SpeakOptions): Promise<void>;
    stop(): void;
    pause(): void;
    resume(): void;
    getVoices(): Promise<VoiceInfo[]>;
}