Simple Body Parser in Node.js

body-parser.js

const { createServer } = require('http');

const server = createServer((request, response) => {
  // by default assign maximum of 2KB for Body size if there's no Content-Length
  let size = Number(request.headers['content-length']) || 2048;

  let bodyData = Buffer.alloc(size);
  request.on('data', data => {
    for (let x = 0; x < size; x++) {
      bodyData[x] = data[x];
    }
  })

  request.on('end', () => {
    const raw = bodyData.toString();
    const realBody = JSON.parse(raw);
    console.log(realBody);
    // Empty the Buffer
    bodyData = null;
  })

  response.statusCode = 200;
  response.end("OK");
});


server.listen(3000, () => console.log("UP"))