src/pages/api/chat.ts

import { NextApiRequest, NextApiResponse } from 'next'
import ChatGPT from 'gpt-web';

const chatbot = new ChatGPT(process.env.OPENAI_EMAIL!, process.env.OPENAI_PASSWORD!);
export default async function handler(req: NextApiRequest, res: NextApiResponse) {
  const text = String(req.query.text);
  res.setHeader('Content-Type', 'text/stream; charset=UTF-8');

  if (!text.trim()) {
    return res.end('text不能为空');
  }

  let lastLen = 0;
  const response = await chatbot.chat(text, {
    onMessage: (msg: string) => {
      res.write(msg.slice(lastLen));
      res.flushHeaders();
      lastLen = msg.length;
    }
  });
  res.end(response.slice(lastLen));
  console.log('done');
}