Simple Request echo-ing Node Application

echo.js

const http = require('http');
const server = http.createServer();

// create an echo function that logs the request & body,
// and responds with a 2xx status code and OK.
const echo = (request, response, body) => {

    body = Buffer.concat(body).toString();

    console.log('\nReceived Request:\n')
    console.log(`${request.method}: ${request.url}`);
    console.log('\nHeaders:');
    console.log(request.headers);

    console.log('\nBody:');
    if (request.headers['content-type'] === 'application/json') {
        // pretty print the body if it's JSON.
        console.log(JSON.stringify(JSON.parse(body), null, 2));
    } else {
        // otherwise, just show us what we got.
        console.log(body);
    }

    response.statusCode = request.method.match(/^(POST|PUT|DELETE)$/) ? 202 : 200;
    response.write('OK\n');
    response.end();
};

// start the node server on a specific port, and echo all requests sent to the server.
server.on('request', (request, response) => {
    let body = [];
    request.on('data', (chunk) => body.push(chunk))
        .on('end', () => echo(request, response, body));
}).listen(process.env.SERVER_PORT || 8080);