import { type LangCode } from './utils/language.js';
/**
 * Retrieves an audio buffer of the given text in the given language
 * @param lang - The code of the language to be used as the TTS voice
 * @param text - The text to be converted into speech
 * @param [isSlow=false] - Whether the audio should be slowed down or not
 * @returns An array of numbers that represents a {@link Uint8Array} of the audio buffer
 */
export declare const getAudio: (lang: LangCode<"target">, text: string, isSlow?: boolean) => Promise<number[] | null>;