transform uppercase in request

transform-uppercase-request.js

import http from "node:http";
import fs from "node:fs";
import { Transform } from "node:stream";

function upperCaseTransform() {
  return new Transform({
    transform(chunk, encoding, next) {
      this.push(chunk.toString().toUpperCase());
      next();
    },
  });
}

var server = http.createServer(async (req, res) => {
  var stream = fs.createReadStream("./file.text");
  stream.pipe(upperCaseTransform()).pipe(res);
  stream.on("end", () => res.end());
});

server.listen(8000, () => {
  console.log("server is listening ... 8000");
});