const fs = require('fs');
const EventEmitter = require('events').EventEmitter;

let fileServer = (fn) => {
  let e = new EventEmitter();
  let enc = 'utf-8'
  fs.readFile(fn,enc, (err, d) => {
    if (err) {
      e.emit('err', err.message);
    }
    e.emit('data', d);
    e.emit('end');
  });
  return e;
}

let client = fileServer('index.html');

client.on('data', (d) => {
  console.log(">>>>>>>");
  console.log(d);
});

client.on('end', () => {
  console.log('end');
});

client.on('err', (err) => {
  console.log(err);
});