如何将HTTPS post响应保存到Node中的全局变量

global.postResponse = '';

const https = require('https');

const postData = '这里是POST请求的数据';

const options = {
  hostname: '目标服务器的主机名',
  port: 443,
  path: '目标服务器的路径',
  method: 'POST',
  headers: {
    'Content-Type': 'application/x-www-form-urlencoded',
    'Content-Length': Buffer.byteLength(postData)
  }
};

const req = https.request(options, (res) => {
  let responseData = '';

  res.on('data', (chunk) => {
    responseData += chunk;
  });

  res.on('end', () => {
    global.postResponse = responseData;
    console.log('HTTPS post响应已保存到全局变量中');
  });
});

req.on('error', (error) => {
  console.error(`HTTPS post请求失败：${error}`);
});

req.write(postData);
req.end();