bitlogin/packages/demo/serve.mjs

// Minimal zero-dependency static file server for local preview of dist/.
import { createServer } from "node:http";
import { readFile } from "node:fs/promises";
import { existsSync, statSync } from "node:fs";
import { fileURLToPath } from "node:url";
import { dirname, extname, join } from "node:path";

const __dirname = dirname(fileURLToPath(import.meta.url));
const root = join(__dirname, "dist");
const port = process.env.PORT ? Number(process.env.PORT) : 4173;

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

createServer(async (req, res) => {
  try {
    let path = decodeURIComponent(new URL(req.url, "http://localhost").pathname);
    let filePath = join(root, path);
    if (!filePath.startsWith(root)) {
      res.writeHead(403);
      res.end("Forbidden");
      return;
    }
    if (existsSync(filePath) && statSync(filePath).isDirectory()) {
      filePath = join(filePath, "index.html");
    }
    if (!existsSync(filePath)) {
      filePath = join(root, "index.html");
    }
    const body = await readFile(filePath);
    res.writeHead(200, { "Content-Type": MIME[extname(filePath)] ?? "application/octet-stream" });
    res.end(body);
  } catch (err) {
    res.writeHead(500);
    res.end(String(err));
  }
}).listen(port, () => {
  console.log(`BitLogin demo running at http://localhost:${port}`);
});