Dynamic Parser for \r\n separated JSON objects

parser.js

var buf = require('buffer');

/**                                                                                                                                                                                                                                                                                  
 * Dynamic Parser Object borrowed to twitter-node                                                                                                                                                                                                                                    
 */
var Parser = function Parser() {
  events.EventEmitter.call(this);
  this.buffer = '';
  return this;
};

// The parser emits events!                                                                                                                                                                                                                                                          
Parser.prototype = Object.create(events.EventEmitter.prototype);
Parser.END        = '\r\n';
Parser.END_LENGTH = 2;

Parser.prototype.receive = function receive(buffer) {
  this.buffer += buffer.toString('utf8');
  var index, json;
  // We have END?                                                                                                                                                                                                                                                                    
  while ((index = this.buffer.indexOf(Parser.END)) > -1) {
    json = this.buffer.slice(0, index);
    this.buffer = this.buffer.slice(index + Parser.END_LENGTH);
    if (json.length > 0) {
      try {
        json = JSON.parse(json);
        this.emit('object', json);
      } catch (error) {
        this.emit('error', error);
      }
    }
  }
};