index.js - first encounter with a buffer

index.js

const http = require('http');
//  Require the File System Module
const fs = require('fs');

const PORT = process.env.PORT || 3000;


const server = http.createServer((req, res) => {

    const URL = req.url;
    if (req.url === '/') {
        // We try to read the method in a Synchronous way
        const page = fs.readFileSync('./views/index.html');

        // Let output what is in there
        console.log(page);
        //  Make the response
        res.writeHead(200);
        res.write(page, () => {
            console.log('console.log from the callback function!')
        });
        res.end();
    }
}).listen(PORT);

server.on('listening', () => { console.log('We are listening on', PORT) });