serve.js

// 静态站点服务器：node serve.js [port]
const http = require('http');
const fs = require('fs');
const path = require('path');

const ROOT = path.resolve(__dirname, "public");
const PORT = Number(process.argv[2]) || 8765;

const MIME = {
  ".html": "text/html; charset=utf-8",
  ".css": "text/css; charset=utf-8",
  ".js": "text/javascript; charset=utf-8",
  ".json": "application/json; charset=utf-8",
  ".png": "image/png",
  ".ico": "image/x-icon",
  ".svg": "image/svg+xml",
  ".jpg": "image/jpeg",
  ".txt": "text/plain; charset=utf-8",
};

http.createServer((req, res) => {
  let p = decodeURIComponent((req.url || "/").split("?")[0]);
  if (p === "/") p = "/index.html";
  const file = path.normalize(path.join(ROOT, p));
  if (!file.startsWith(ROOT)) { res.writeHead(403); res.end('Forbidden'); return; }
  fs.readFile(file, (err, data) => {
    if (err) { res.writeHead(404, { 'Content-Type': 'text/plain; charset=utf-8' }); res.end('404 Not Found'); return; }
    const ext = path.extname(file).toLowerCase();
    res.writeHead(200, { 'Content-Type': MIME[ext] || 'application/octet-stream' });
    res.end(data);
  });
}).listen(PORT, () => {
  console.log("Atlas clone running: http://127.0.0.1:" + PORT + "/");
});