process.nextTick example

index.js

var http = require('http')
var MyConstructor = require('./myconstructor')

  http.createServer(function(request, response) {
    
    var c = new MyConstructor();
    c.on('data', function(data) {
      console.log(data);
    });
    c.on('end', function(){ console.log('end'); } );

    
    response.writeHead(200, {"Content-Type": "text/plain"});
    response.write("Hello World");
    response.end();
  }).listen(8888);

myconstructor.js

var EventEmitter = require( "events" ).EventEmitter;

var MyConstructor = function() {
  var self = this;
  process.nextTick(function() {
    self._continue();
  });
};

MyConstructor.prototype.__proto__ = EventEmitter.prototype;

MyConstructor.prototype._continue = function() {
  // without the process.nextTick
  // these events would be emitted immediately
  // with no listeners. they would be lost.
  this.emit('data', 'hello');
  this.emit('data', 'world');
  this.emit('end');
};

module.exports = MyConstructor;