node server for SAB

node-server-sab.ts

import http from "http";
import fs from "fs/promises";
const host = "localhost";
const port = 8000;

const getFile = async (path: string) => {
  try {
    return await fs.readFile(`./public/${path}`);
  } catch (e) {
    return new Uint8Array(1);
  }
};

const server = http.createServer(async function (req, res) {
  if (req.url == "/") {
    const indexFile = await getFile("index.html");
    res.setHeader("Cross-Origin-Embedder-Policy", "require-corp");
    res.setHeader("Cross-Origin-Opener-Policy", "same-origin");
    res.writeHead(200);
    return res.end(indexFile);
  }

  const fileExtension = req.url!.split(".").pop()!;

  const indexFile = await getFile(req.url!);

  let contentType = "";
  switch (fileExtension) {
    case "js":
      contentType = "text/javascript";
      break;
    case "css":
      contentType = "text/css";
      break;
    case "json":
      contentType = "application/json";
      break;
    case "png":
      contentType = "image/png";
      break;
    case "jpg":
      contentType = "image/jpg";
      break;
    case "wav":
      contentType = "audio/wav";
      break;
  }
  res.setHeader("Cross-Origin-Embedder-Policy", "require-corp");
  res.setHeader("Cross-Origin-Opener-Policy", "same-origin");
  res.writeHead(200, {
    "Content-Type": contentType,
  });
  return res.end(indexFile);
});
server.listen(port, host, () => {
  console.log(`Server is running on http://${host}:${port}`);
});