如何在Node.js的POST/GET请求头中添加x-auth-token？

const http = require('http');

const options = {
  hostname: 'example.com',
  port: 80,
  path: '/api/data',
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'x-auth-token': 'your-auth-token-here'
  }
};

const req = http.request(options, (res) => {
  console.log(`STATUS: ${res.statusCode}`);
  console.log(`HEADERS: ${JSON.stringify(res.headers)}`);
  res.setEncoding('utf8');
  res.on('data', (chunk) => {
    console.log(`BODY: ${chunk}`);
  });
});

req.on('error', (e) => {
  console.error(`problem with request: ${e.message}`);
});

req.write(JSON.stringify({ key: 'value' }));
req.end();

const express = require('express');
const axios = require('axios');

const app = express();

app.post('/send-data', async (req, res) => {
  try {
    const response = await axios.post('http://example.com/api/data', req.body, {
      headers: {
        ...req.getHeaders(),
        'x-auth-token': 'your-auth-token-here'
      }
    });
    res.send(response.data);
  } catch (error) {
    res.status(500).send(error);
  }
});

app.listen(3000, () => {
  console.log('Server is running on port 3000');
});