Using hooker to inject logs about events and/or http server responses

hooks.js

// npm install hooker
var hooker = require('hooker');

function hookEmitter () {
  var EventEmitter = require('events').EventEmitter;

  // to only hook emit: hooker.hook(EventEmitter.prototype, 'emit', function () {
  hooker.hook(EventEmitter.prototype, function () {
    console.log('args', arguments);
  });

  var emitter = new EventEmitter();
  emitter.emit('data', 'hello');
}
// hookEmitter();

function hookHttp () {
  var http = require('http');

  hooker.hook(http.ServerResponse.prototype, function () { 
    console.log('args', arguments);
  });

  var server = http.createServer(function (req, res) {
    var body = 'hello world';
    res.writeHead(200, { 'Content-Length': body.length, 'Content-Type': 'text/plain' });
    res.end(body);
  });

  server.listen(3000);
  console.log('now: curl localhost:3000');
}

hookHttp();