simple hostname info in nodejs

host-info.js

import { createServer } from 'node:http';
import { execSync } from 'node:child_process';


const server = createServer(async function (req, res) {
  
      Object.entries({
        'Content-Type': 'application/json',
        'Access-Control-Allow-Origin': '*',
        'Access-Control-Allow-Methods': '*',
    }).forEach(([key, value]) => {
        res.setHeader(key, value);
    });
  

    let result = {};
    try {
      result = {
        hostname: execSync('hostname', { encoding: 'utf8' }).trim(),
        ip: execSync("ip -4 addr show eth0 | grep -oP '(?<=inet\\s)\\d+(\\.\\d+){3}'", { encoding: 'utf8' }).trim(),
      };
    }
    catch(err) {}
 

    res.writeHead(200);
    res.end(JSON.stringify(result));
});

let PORT = process.env.NODE_PORT || process.env.PORT || 3000;
server.listen(PORT, () => console.log(`Running at ${PORT}`));