import OpenAI from "openai"; import * as fs from "fs"; async function build() { const client = new OpenAI({ apiKey: ""}) const mp3 = await client.audio.speech.create({ model: 'tts-1-hd', voice: 'alloy', input: 'test 1 2 3' }); const buffer = Buffer.from(await mp3.arrayBuffer()); await fs.promises.writeFile('./output.mp3', buffer); }