import type { PITCH, RATE, VOLUME } from './constants';
import { OUTPUT_FORMAT } from './constants';
type EventType = "data" | "close" | "end";
declare class EventEmitter {
    private eventListeners;
    constructor();
    on(event: EventType, callback: (...args: any[]) => void): void;
    emit(event: EventType, data: any): void;
}
export type Voice = {
    Name: string;
    ShortName: string;
    Gender: string;
    Locale: string;
    SuggestedCodec: string;
    FriendlyName: string;
    Status: string;
};
export declare class ProsodyOptions {
    pitch: PITCH | string;
    rate: RATE | string | number;
    volume: VOLUME | string | number;
}
export declare class EdgeTTSClient {
    static OUTPUT_FORMAT: typeof OUTPUT_FORMAT;
    private static CLIENT_TOKEN;
    private static VOICES_URL;
    private static SYNTH_URL;
    private static BINARY_DELIM;
    private static VOICE_LANG_REGEX;
    private enableLogging;
    private isBrowser;
    private ws;
    private voice;
    private voiceLocale;
    private outputFormat;
    private requestQueue;
    private connectionStartTime;
    constructor(enableLogging?: boolean);
    private log;
    private sendMessage;
    private initWebSocket;
    private handleMessage;
    private handleClose;
    private cacheAudioData;
    private findDelimiterIndex;
    private getConfigMessage;
    getVoices(): Promise<Voice[]>;
    setMetadata(voiceName: string, outputFormat: OUTPUT_FORMAT, voiceLocale?: string): Promise<void>;
    private inferLocaleFromVoiceName;
    close(): void;
    toStream(text: string, options?: ProsodyOptions): EventEmitter;
    private buildSSML;
    private sendSSMLRequest;
}
export {};