A simple node.js HTTP/1.1 server that echoes back a request as a JSON object

echo-server.js

import { createServer } from "http";

const server = createServer((req, res) => {
  const { method, url: path, headersDistinct: headers } = req;

  let data = [];
  req.on("data", (chunk) => data.push(chunk));
  req.on("end", (chunk) => {
    data.push(chunk);
    data = data.join("");

    let json;
    try {
      json = JSON.parse(data);
    } catch {}

    res.appendHeader("content-type", "application/json");
    res.write(
      JSON.stringify(
        {
          method,
          path,
          headers,
          body: json ?? data,
        },
        null,
        2
      )
    );
    res.end();
  });
});

server.listen(8080);
console.log("Server started!");