如何将此POST方法转换为有效的Node.js代码？

const http = require('http');
const querystring = require('querystring');

const postData = querystring.stringify({
  key1: 'value1',
  key2: 'value2'
});

const options = {
  hostname: 'example.com',
  port: 80,
  path: '/path/to/api',
  method: 'POST',
  headers: {
    'Content-Type': 'application/x-www-form-urlencoded',
    'Content-Length': Buffer.byteLength(postData)
  }
};

const req = http.request(options, (res) => {
  let data = '';

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

  res.on('end', () => {
    console.log(data);
  });
});

req.on('error', (error) => {
  console.error(error);
});

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