socket.io.js

!function(e){"object"==typeof exports?module.exports=e():"function"==typeof define&&define.amd?define(e):"undefined"!=typeof window?window.io=e():"undefined"!=typeof global?global.io=e():"undefined"!=typeof self&&(self.io=e())}(function(){var define,module,exports;
return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){

module.exports = require('./lib/');

},{"./lib/":2}],2:[function(require,module,exports){
var __dirname="/lib";
/**
 * Module dependencies.
 */

var url = require('./url');
var parser = require('socket.io-parser');
var Manager = require('./manager');

/**
 * Module exports.
 */

module.exports = exports = lookup;

/**
 * Managers cache.
 */

var cache = exports.managers = {};

/**
 * Looks up an existing `Manager` for multiplexing.
 * If the user summons:
 *
 *   `io('http://localhost/a');`
 *   `io('http://localhost/b');`
 *
 * We reuse the existing instance based on same scheme/port/host,
 * and we initialize sockets for each namespace.
 *
 * @api public
 */

function lookup(uri, opts){
  opts = opts || {};

  var parsed = url(uri);
  var href = parsed.href;
  var io;

  if (opts.forceNew || false === opts.multiplex) {
    io = Manager(href, opts);
  } else {
    var id = parsed.id;
    if (!cache[id]) cache[id] = Manager(href, opts);
    io = cache[id];
  }

  return io.socket(parsed.pathname || '/');
}

/**
 * Expose standalone client source.
 *
 * @api public
 */

if ('undefined' == typeof window) {
  var read = require('fs').readFileSync;
  exports.source = read(__dirname + '/../socket.io.js');
}

/**
 * Protocol version.
 *
 * @api public
 */

exports.protocol = parser.protocol;

/**
 * `connect`.
 *
 * @param {String} uri
 * @api public
 */

exports.connect = lookup;

/**
 * Expose constructors for standalone build.
 *
 * @api public
 */

exports.Manager = require('./manager');
exports.Socket = require('./socket');

},{"./manager":3,"./socket":5,"./url":6,"fs":10,"socket.io-parser":45}],3:[function(require,module,exports){

/**
 * Module dependencies.
 */

var url = require('./url');
var eio = require('engine.io-client');
var Socket = require('./socket');
var Emitter = require('emitter');
var parser = require('socket.io-parser');
var on = require('./on');
var bind = require('bind');
var object = require('object-component');
var debug = require('debug')('socket.io-client:manager');

/**
 * Module exports
 */

module.exports = Manager;

/**
 * `Manager` constructor.
 *
 * @param {Socket|String} engine instance or engine uri/opts
 * @param {Object} options
 * @api public
 */

function Manager(socket, opts){
  if (!(this instanceof Manager)) return new Manager(socket, opts);
  opts = opts || {};
  opts.path = opts.path || '/socket.io';
  this.nsps = {};
  this.subs = [];
  this.reconnection(opts.reconnection);
  this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);
  this.reconnectionDelay(opts.reconnectionDelay || 1000);
  this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);
  this.timeout(null == opts.timeout ? 10000 : opts.timeout);
  this.readyState = 'closed';
  if (!socket || !socket.write) socket = eio(socket, opts);
  this.engine = socket;
  this.connected = 0;
  this.attempts = 0;
  this.open();
}

/**
 * Mix in `Emitter`.
 */

Emitter(Manager.prototype);

/**
 * Sets the `reconnection` config.
 *
 * @param {Boolean} true/false if it should automatically reconnect
 * @return {Manager} self or value
 * @api public
 */

Manager.prototype.reconnection = function(v){
  if (!arguments.length) return this._reconnection;
  this._reconnection = !!v;
  return this;
};

/**
 * Sets the reconnection attempts config.
 *
 * @param {Number} max reconnection attempts before giving up
 * @return {Manager} self or value
 * @api public
 */

Manager.prototype.reconnectionAttempts = function(v){
  if (!arguments.length) return this._reconnectionAttempts;
  this._reconnectionAttempts = v;
  return this;
};

/**
 * Sets the delay between reconnections.
 *
 * @param {Number} delay
 * @return {Manager} self or value
 * @api public
 */

Manager.prototype.reconnectionDelay = function(v){
  if (!arguments.length) return this._reconnectionDelay;
  this._reconnectionDelay = v;
  return this;
};

/**
 * Sets the maximum delay between reconnections.
 *
 * @param {Number} delay
 * @return {Manager} self or value
 * @api public
 */

Manager.prototype.reconnectionDelayMax = function(v){
  if (!arguments.length) return this._reconnectionDelayMax;
  this._reconnectionDelayMax = v;
  return this;
};

/**
 * Sets the connection timeout. `false` to disable
 *
 * @return {Manager} self or value
 * @api public
 */

Manager.prototype.timeout = function(v){
  if (!arguments.length) return this._timeout;
  this._timeout = v;
  return this;
};

/**
 * Sets the current transport `socket`.
 *
 * @param {Function} optional, callback
 * @return {Manager} self
 * @api public
 */

Manager.prototype.open =
Manager.prototype.connect = function(fn){
  if (~this.readyState.indexOf('open')) return this;

  var socket = this.engine;
  var self = this;
  var timerSub;

  this.readyState = 'opening';

  // emit `open`
  var openSub = on(socket, 'open', bind(this, 'onopen'));

  // emit `connect_error`
  var errorSub = on(socket, 'error', function(data){
    self.cleanup();
    self.emit('connect_error', data);
    if (fn) {
      var err = new Error('Connection error');
      err.data = data;
      fn(err);
    }
  });

  // emit `connect_timeout`
  if (false !== this._timeout) {
    var timeout = this._timeout;
    debug('connect attempt will timeout after %d', timeout);

    // set timer
    var timer = setTimeout(function(){
      debug('connect attempt timed out after %d', timeout);
      openSub.destroy();
      socket.close();
      socket.emit('error', 'timeout');
      self.emit('connect_timeout', timeout);
    }, timeout);

    // create handle
    timerSub = {
      destroy: function(){
        clearTimeout(timer);
      }
    };

    this.subs.push(timerSub);
  }

  this.subs.push(openSub);
  this.subs.push(errorSub);

  return this;
};

/**
 * Called upon transport open.
 *
 * @api private
 */

Manager.prototype.onopen = function(){
  // clear old subs
  this.cleanup();

  // mark as open
  this.readyState = 'open';
  this.emit('open');

  // add new subs
  var socket = this.engine;
  this.subs.push(on(socket, 'data', bind(this, 'ondata')));
  this.subs.push(on(socket, 'error', bind(this, 'onerror')));
  this.subs.push(on(socket, 'close', bind(this, 'onclose')));
};

/**
 * Called with data.
 *
 * @api private
 */

Manager.prototype.ondata = function(data){
  this.emit('packet', parser.decode(data));
};

/**
 * Called upon socket error.
 *
 * @api private
 */

Manager.prototype.onerror = function(err){
  this.emit('error', err);
};

/**
 * Creates a new socket for the given `nsp`.
 *
 * @return {Socket}
 * @api public
 */

Manager.prototype.socket = function(nsp){
  var socket = this.nsps[nsp];
  if (!socket) {
    socket = new Socket(this, nsp);
    this.nsps[nsp] = socket;
    var self = this;
    socket.on('connect', function(){
      self.connected++;
    });
  }
  return socket;
};

/**
 * Called upon a socket close.
 *
 * @param {Socket} socket
 */

Manager.prototype.destroy = function(socket){
  this.connected--;
  if (!this.connected) {
    this.close();
  }
};

/**
 * Writes a packet.
 *
 * @param {Object} packet
 * @api private
 */

Manager.prototype.packet = function(packet){
  debug('writing packet %j', packet);
  this.engine.write(parser.encode(packet));
};

/**
 * Clean up transport subscriptions.
 *
 * @api private
 */

Manager.prototype.cleanup = function(){
  var sub;
  while (sub = this.subs.shift()) sub.destroy();
};

/**
 * Close the current socket.
 *
 * @api private
 */

Manager.prototype.close =
Manager.prototype.disconnect = function(){
  this.skipReconnect = true;
  this.cleanup();
  this.engine.close();
};

/**
 * Called upon engine close.
 *
 * @api private
 */

Manager.prototype.onclose = function(){
  this.cleanup();
  if (!this.skipReconnect) {
    var self = this;
    this.reconnect();
  }
};

/**
 * Attempt a reconnection.
 *
 * @api private
 */

Manager.prototype.reconnect = function(){
  var self = this;
  this.attempts++;

  if (this.attempts > this._reconnectionAttempts) {
    this.emit('reconnect_failed');
    this.reconnecting = false;
  } else {
    var delay = this.attempts * this.reconnectionDelay();
    delay = Math.min(delay, this.reconnectionDelayMax());
    debug('will wait %dms before reconnect attempt', delay);

    this.reconnecting = true;
    var timer = setTimeout(function(){
      debug('attemptign reconnect');
      self.open(function(err){
        if (err) {
          debug('reconnect attempt error');
          self.reconnect();
          return self.emit('reconnect_error', err.data);
        } else {
          debug('reconnect success');
          self.onreconnect();
        }
      });
    }, delay);

    this.subs.push({
      destroy: function(){
        clearTimeout(timer);
      }
    });
  }
};

/**
 * Called upon successful reconnect.
 *
 * @api private
 */

Manager.prototype.onreconnect = function(){
  var attempt = this.attempts;
  this.attempts = 0;
  this.reconnecting = false;
  this.emit('reconnect', attempt);
};

},{"./on":4,"./socket":5,"./url":6,"bind":7,"debug":19,"emitter":21,"engine.io-client":23,"object-component":44,"socket.io-parser":45}],4:[function(require,module,exports){

/**
 * Module exports.
 */

module.exports = on;

/**
 * Helper for subscriptions.
 *
 * @param {Object|EventEmitter} obj with `Emitter` mixin or `EventEmitter`
 * @param {String} event name
 * @param {Function} callback
 * @api public
 */

function on(obj, ev, fn) {
  obj.on(ev, fn);
  return {
    destroy: function(){
      obj.removeListener(ev, fn);
    }
  };
}

},{}],5:[function(require,module,exports){

/**
 * Module dependencies.
 */

var parser = require('socket.io-parser');
var Emitter = require('emitter');
var toArray = require('to-array');
var on = require('./on');
var bind = require('bind');
var debug = require('debug')('socket.io-client:socket');

/**
 * Module exports.
 */

module.exports = exports = Socket;

/**
 * Internal events (blacklisted).
 * These events can't be emitted by the user.
 */

var events = exports.events = [
  'connect',
  'disconnect',
  'error'
];

/**
 * Shortcut to `Emitter#emit`.
 */

var emit = Emitter.prototype.emit;

/**
 * `Socket` constructor.
 *
 * @api public
 */

function Socket(io, nsp){
  this.io = io;
  this.nsp = nsp;
  this.json = this; // compat
  this.ids = 0;
  this.acks = {};
  this.open();
  this.buffer = [];
  this.connected = false;
  this.disconnected = true;
}

/**
 * Mix in `Emitter`.
 */

Emitter(Socket.prototype);

/**
 * Called upon engine `open`.
 *
 * @api private
 */

Socket.prototype.open =
Socket.prototype.connect = function(){
  var io = this.io;
  io.open(); // ensure open
  if ('open' == this.io.readyState) this.onopen();
  this.subs = [
    on(io, 'open', bind(this, 'onopen')),
    on(io, 'error', bind(this, 'onerror'))
  ];
};

/**
 * Sends a `message` event.
 *
 * @return {Socket} self
 * @api public
 */

Socket.prototype.send = function(){
  var args = toArray(arguments);
  args.unshift('message');
  this.emit.apply(this, args);
  return this;
};

/**
 * Override `emit`.
 * If the event is in `events`, it's emitted normally.
 *
 * @param {String} event name
 * @return {Socket} self
 * @api public
 */

Socket.prototype.emit = function(ev){
  if (~events.indexOf(ev)) {
    emit.apply(this, arguments);
  } else {
    var args = toArray(arguments);
    var packet = { type: parser.EVENT, data: args };

    // event ack callback
    if ('function' == typeof args[args.length - 1]) {
      debug('emitting packet with ack id %d', this.ids);
      this.acks[this.ids] = args.pop();
      packet.id = this.ids++;
    }

    this.packet(packet);
  }

  return this;
};

/**
 * Sends a packet.
 *
 * @param {Object} packet
 * @api private
 */

Socket.prototype.packet = function(packet){
  packet.nsp = this.nsp;
  this.io.packet(packet);
};

/**
 * Called upon `error`.
 *
 * @param {Object} data
 * @api private
 */

Socket.prototype.onerror = function(data){
  this.emit('error', data);
};

/**
 * "Opens" the socket.
 *
 * @api private
 */

Socket.prototype.onopen = function(){
  debug('transport is open - connecting');

  // write connect packet if necessary
  if ('/' != this.nsp) {
    this.packet({ type: parser.CONNECT });
  }

  // subscribe
  var io = this.io;
  this.subs.push(
    on(io, 'packet', bind(this, 'onpacket')),
    on(io, 'close', bind(this, 'onclose'))
  );
};

/**
 * Called upon engine `close`.
 *
 * @param {String} reason
 * @api private
 */

Socket.prototype.onclose = function(reason){
  debug('close (%s)', reason);
  this.connected = false;
  this.disconnected = true;
  this.emit('disconnect', reason);
};

/**
 * Called with socket packet.
 *
 * @param {Object} packet
 * @api private
 */

Socket.prototype.onpacket = function(packet){
  if (packet.nsp != this.nsp) return;

  switch (packet.type) {
    case parser.CONNECT:
      this.onconnect();
      break;

    case parser.EVENT:
      this.onevent(packet);
      break;

    case parser.ACK:
      this.onack(packet);
      break;

    case parser.DISCONNECT:
      this.ondisconnect();
      break;

    case parser.ERROR:
      this.emit('error', packet.data);
      break;
  }
};

/**
 * Called upon a server event.
 *
 * @param {Object} packet
 * @api private
 */

Socket.prototype.onevent = function(packet){
  var args = packet.data || [];
  debug('emitting event %j', args);

  if (packet.id) {
    debug('attaching ack callback to event');
    args.push(this.ack(packet.id));
  }

  if (this.connected) {
    emit.apply(this, args);
  } else {
    this.buffer.push(args);
  }
};

/**
 * Produces an ack callback to emit with an event.
 *
 * @api private
 */

Socket.prototype.ack = function(id){
  var self = this;
  var sent = false;
  return function(){
    // prevent double callbacks
    if (sent) return;
    var args = toArray(arguments);
    debug('sending ack %j', args);
    self.packet({
      type: parser.ACK,
      id: id,
      data: args
    });
  };
};

/**
 * Called upon a server acknowlegement.
 *
 * @param {Object} packet
 * @api private
 */

Socket.prototype.onack = function(packet){
  debug('calling ack %s with %j', packet.id, packet.data);
  var fn = this.acks[packet.id];
  fn.apply(this, packet.data);
  delete this.acks[packet.id];
};

/**
 * Called upon server connect.
 *
 * @api private
 */

Socket.prototype.onconnect = function(){
  this.connected = true;
  this.disconnected = false;
  this.emit('connect');
  this.emitBuffered();
};

/**
 * Emit buffered events.
 *
 * @api private
 */

Socket.prototype.emitBuffered = function(){
  for (var i = 0; i < this.buffer.length; i++) {
    emit.apply(this, this.buffer[i]);
  }
  this.buffer = [];
};

/**
 * Called upon server disconnect.
 *
 * @api private
 */

Socket.prototype.ondisconnect = function(){
  debug('server disconnect (%s)', this.nsp);
  this.destroy();
  this.onclose('io server disconnect');
};

/**
 * Cleans up.
 *
 * @api private
 */

Socket.prototype.destroy = function(){
  debug('destroying socket (%s)', this.nsp);

  // manual close means no reconnect
  for (var i = 0; i < this.subs.length; i++) {
    this.subs[i].destroy();
  }

  // notify manager
  this.io.destroy(this);
};

/**
 * Disconnects the socket manually.
 *
 * @return {Socket} self
 * @api public
 */

Socket.prototype.close =
Socket.prototype.disconnect = function(){
  if (!this.connected) return this;

  debug('performing disconnect (%s)', this.nsp);
  this.packet({ type: parser.PACKET_DISCONNECT });

  // destroy subscriptions
  this.destroy();

  // fire events
  this.onclose('io client disconnect');
  return this;
};

},{"./on":4,"bind":7,"debug":19,"emitter":21,"socket.io-parser":45,"to-array":47}],6:[function(require,module,exports){

/**
 * Module dependencies.
 */

var url = require('url');
var debug = require('debug')('socket.io-client:url');

/**
 * Module exports.
 */

module.exports = parse;

/**
 * URL parser.
 *
 * @param {String} url
 * @api public
 */

function parse(uri){
  var obj = uri;

  // default to window's location
  if (null == uri) uri = location.protocol + '//' + location.host;

  // parse string
  if ('string' == typeof uri) {
    if ('/' == uri.charAt(0)) {
      if ('undefined' != typeof location) {
        uri = location.hostname + uri;
      }
    }

    // allow for `localhost:3000`
    if (!/^(https?|wss?):\/\//.test(uri)) {
      debug('protocol-less url %s', uri);
      if ('undefined' != typeof location) {
        uri = location.protocol + '//' + uri;
      } else {
        uri = 'https://' + uri;
      }
    }

    // parse
    debug('parse %s', uri);
    obj = url.parse(uri);
  }

  // make sure we treat `localhost:80` and `localhost` equally
  if ((/(http|ws):/.test(obj.protocol) && 80 == obj.port) ||
     (/(http|ws)s:/.test(obj.protocol) && 443 == obj.port)) {
    delete obj.port;
  }

  // define unique id
  obj.id = obj.protocol + obj.hostname + (obj.port ? (':' + obj.port) : '');

  return obj;
}

},{"debug":19,"url":13}],7:[function(require,module,exports){

/**
 * Slice reference.
 */

var slice = [].slice;

/**
 * Bind `obj` to `fn`.
 *
 * @param {Object} obj
 * @param {Function|String} fn or string
 * @return {Function}
 * @api public
 */

module.exports = function(obj, fn){
  if ('string' == typeof fn) fn = obj[fn];
  if ('function' != typeof fn) throw new Error('bind() requires a function');
  var args = [].slice.call(arguments, 2);
  return function(){
    return fn.apply(obj, args.concat(slice.call(arguments)));
  }
};

},{}],8:[function(require,module,exports){


//
// The shims in this file are not fully implemented shims for the ES5
// features, but do work for the particular usecases there is in
// the other modules.
//

var toString = Object.prototype.toString;
var hasOwnProperty = Object.prototype.hasOwnProperty;

// Array.isArray is supported in IE9
function isArray(xs) {
  return toString.call(xs) === '[object Array]';
}
exports.isArray = typeof Array.isArray === 'function' ? Array.isArray : isArray;

// Array.prototype.indexOf is supported in IE9
exports.indexOf = function indexOf(xs, x) {
  if (xs.indexOf) return xs.indexOf(x);
  for (var i = 0; i < xs.length; i++) {
    if (x === xs[i]) return i;
  }
  return -1;
};

// Array.prototype.filter is supported in IE9
exports.filter = function filter(xs, fn) {
  if (xs.filter) return xs.filter(fn);
  var res = [];
  for (var i = 0; i < xs.length; i++) {
    if (fn(xs[i], i, xs)) res.push(xs[i]);
  }
  return res;
};

// Array.prototype.forEach is supported in IE9
exports.forEach = function forEach(xs, fn, self) {
  if (xs.forEach) return xs.forEach(fn, self);
  for (var i = 0; i < xs.length; i++) {
    fn.call(self, xs[i], i, xs);
  }
};

// Array.prototype.map is supported in IE9
exports.map = function map(xs, fn) {
  if (xs.map) return xs.map(fn);
  var out = new Array(xs.length);
  for (var i = 0; i < xs.length; i++) {
    out[i] = fn(xs[i], i, xs);
  }
  return out;
};

// Array.prototype.reduce is supported in IE9
exports.reduce = function reduce(array, callback, opt_initialValue) {
  if (array.reduce) return array.reduce(callback, opt_initialValue);
  var value, isValueSet = false;

  if (2 < arguments.length) {
    value = opt_initialValue;
    isValueSet = true;
  }
  for (var i = 0, l = array.length; l > i; ++i) {
    if (array.hasOwnProperty(i)) {
      if (isValueSet) {
        value = callback(value, array[i], i, array);
      }
      else {
        value = array[i];
        isValueSet = true;
      }
    }
  }

  return value;
};

// String.prototype.substr - negative index don't work in IE8
if ('ab'.substr(-1) !== 'b') {
  exports.substr = function (str, start, length) {
    // did we get a negative start, calculate how much it is from the beginning of the string
    if (start < 0) start = str.length + start;

    // call the original function
    return str.substr(start, length);
  };
} else {
  exports.substr = function (str, start, length) {
    return str.substr(start, length);
  };
}

// String.prototype.trim is supported in IE9
exports.trim = function (str) {
  if (str.trim) return str.trim();
  return str.replace(/^\s+|\s+$/g, '');
};

// Function.prototype.bind is supported in IE9
exports.bind = function () {
  var args = Array.prototype.slice.call(arguments);
  var fn = args.shift();
  if (fn.bind) return fn.bind.apply(fn, args);
  var self = args.shift();
  return function () {
    fn.apply(self, args.concat([Array.prototype.slice.call(arguments)]));
  };
};

// Object.create is supported in IE9
function create(prototype, properties) {
  var object;
  if (prototype === null) {
    object = { '__proto__' : null };
  }
  else {
    if (typeof prototype !== 'object') {
      throw new TypeError(
        'typeof prototype[' + (typeof prototype) + '] != \'object\''
      );
    }
    var Type = function () {};
    Type.prototype = prototype;
    object = new Type();
    object.__proto__ = prototype;
  }
  if (typeof properties !== 'undefined' && Object.defineProperties) {
    Object.defineProperties(object, properties);
  }
  return object;
}
exports.create = typeof Object.create === 'function' ? Object.create : create;

// Object.keys and Object.getOwnPropertyNames is supported in IE9 however
// they do show a description and number property on Error objects
function notObject(object) {
  return ((typeof object != "object" && typeof object != "function") || object === null);
}

function keysShim(object) {
  if (notObject(object)) {
    throw new TypeError("Object.keys called on a non-object");
  }

  var result = [];
  for (var name in object) {
    if (hasOwnProperty.call(object, name)) {
      result.push(name);
    }
  }
  return result;
}

// getOwnPropertyNames is almost the same as Object.keys one key feature
//  is that it returns hidden properties, since that can't be implemented,
//  this feature gets reduced so it just shows the length property on arrays
function propertyShim(object) {
  if (notObject(object)) {
    throw new TypeError("Object.getOwnPropertyNames called on a non-object");
  }

  var result = keysShim(object);
  if (exports.isArray(object) && exports.indexOf(object, 'length') === -1) {
    result.push('length');
  }
  return result;
}

var keys = typeof Object.keys === 'function' ? Object.keys : keysShim;
var getOwnPropertyNames = typeof Object.getOwnPropertyNames === 'function' ?
  Object.getOwnPropertyNames : propertyShim;

if (new Error().hasOwnProperty('description')) {
  var ERROR_PROPERTY_FILTER = function (obj, array) {
    if (toString.call(obj) === '[object Error]') {
      array = exports.filter(array, function (name) {
        return name !== 'description' && name !== 'number' && name !== 'message';
      });
    }
    return array;
  };

  exports.keys = function (object) {
    return ERROR_PROPERTY_FILTER(object, keys(object));
  };
  exports.getOwnPropertyNames = function (object) {
    return ERROR_PROPERTY_FILTER(object, getOwnPropertyNames(object));
  };
} else {
  exports.keys = keys;
  exports.getOwnPropertyNames = getOwnPropertyNames;
}

// Object.getOwnPropertyDescriptor - supported in IE8 but only on dom elements
function valueObject(value, key) {
  return { value: value[key] };
}

if (typeof Object.getOwnPropertyDescriptor === 'function') {
  try {
    Object.getOwnPropertyDescriptor({'a': 1}, 'a');
    exports.getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
  } catch (e) {
    // IE8 dom element issue - use a try catch and default to valueObject
    exports.getOwnPropertyDescriptor = function (value, key) {
      try {
        return Object.getOwnPropertyDescriptor(value, key);
      } catch (e) {
        return valueObject(value, key);
      }
    };
  }
} else {
  exports.getOwnPropertyDescriptor = valueObject;
}

},{}],9:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// UTILITY
var util = require('util');
var shims = require('_shims');
var pSlice = Array.prototype.slice;

// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.

var assert = module.exports = ok;

// 2. The AssertionError is defined in assert.
// new assert.AssertionError({ message: message,
//                             actual: actual,
//                             expected: expected })

assert.AssertionError = function AssertionError(options) {
  this.name = 'AssertionError';
  this.actual = options.actual;
  this.expected = options.expected;
  this.operator = options.operator;
  this.message = options.message || getMessage(this);
};

// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);

function replacer(key, value) {
  if (util.isUndefined(value)) {
    return '' + value;
  }
  if (util.isNumber(value) && (isNaN(value) || !isFinite(value))) {
    return value.toString();
  }
  if (util.isFunction(value) || util.isRegExp(value)) {
    return value.toString();
  }
  return value;
}

function truncate(s, n) {
  if (util.isString(s)) {
    return s.length < n ? s : s.slice(0, n);
  } else {
    return s;
  }
}

function getMessage(self) {
  return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
         self.operator + ' ' +
         truncate(JSON.stringify(self.expected, replacer), 128);
}

// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.

// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided.  All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.

function fail(actual, expected, message, operator, stackStartFunction) {
  throw new assert.AssertionError({
    message: message,
    actual: actual,
    expected: expected,
    operator: operator,
    stackStartFunction: stackStartFunction
  });
}

// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;

// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, !!guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.

function ok(value, message) {
  if (!value) fail(value, true, message, '==', assert.ok);
}
assert.ok = ok;

// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);

assert.equal = function equal(actual, expected, message) {
  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
};

// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);

assert.notEqual = function notEqual(actual, expected, message) {
  if (actual == expected) {
    fail(actual, expected, message, '!=', assert.notEqual);
  }
};

// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);

assert.deepEqual = function deepEqual(actual, expected, message) {
  if (!_deepEqual(actual, expected)) {
    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
  }
};

function _deepEqual(actual, expected) {
  // 7.1. All identical values are equivalent, as determined by ===.
  if (actual === expected) {
    return true;

  } else if (util.isBuffer(actual) && util.isBuffer(expected)) {
    if (actual.length != expected.length) return false;

    for (var i = 0; i < actual.length; i++) {
      if (actual[i] !== expected[i]) return false;
    }

    return true;

  // 7.2. If the expected value is a Date object, the actual value is
  // equivalent if it is also a Date object that refers to the same time.
  } else if (util.isDate(actual) && util.isDate(expected)) {
    return actual.getTime() === expected.getTime();

  // 7.3 If the expected value is a RegExp object, the actual value is
  // equivalent if it is also a RegExp object with the same source and
  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
    return actual.source === expected.source &&
           actual.global === expected.global &&
           actual.multiline === expected.multiline &&
           actual.lastIndex === expected.lastIndex &&
           actual.ignoreCase === expected.ignoreCase;

  // 7.4. Other pairs that do not both pass typeof value == 'object',
  // equivalence is determined by ==.
  } else if (!util.isObject(actual) && !util.isObject(expected)) {
    return actual == expected;

  // 7.5 For all other Object pairs, including Array objects, equivalence is
  // determined by having the same number of owned properties (as verified
  // with Object.prototype.hasOwnProperty.call), the same set of keys
  // (although not necessarily the same order), equivalent values for every
  // corresponding key, and an identical 'prototype' property. Note: this
  // accounts for both named and indexed properties on Arrays.
  } else {
    return objEquiv(actual, expected);
  }
}

function isArguments(object) {
  return Object.prototype.toString.call(object) == '[object Arguments]';
}

function objEquiv(a, b) {
  if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b))
    return false;
  // an identical 'prototype' property.
  if (a.prototype !== b.prototype) return false;
  //~~~I've managed to break Object.keys through screwy arguments passing.
  //   Converting to array solves the problem.
  if (isArguments(a)) {
    if (!isArguments(b)) {
      return false;
    }
    a = pSlice.call(a);
    b = pSlice.call(b);
    return _deepEqual(a, b);
  }
  try {
    var ka = shims.keys(a),
        kb = shims.keys(b),
        key, i;
  } catch (e) {//happens when one is a string literal and the other isn't
    return false;
  }
  // having the same number of owned properties (keys incorporates
  // hasOwnProperty)
  if (ka.length != kb.length)
    return false;
  //the same set of keys (although not necessarily the same order),
  ka.sort();
  kb.sort();
  //~~~cheap key test
  for (i = ka.length - 1; i >= 0; i--) {
    if (ka[i] != kb[i])
      return false;
  }
  //equivalent values for every corresponding key, and
  //~~~possibly expensive deep test
  for (i = ka.length - 1; i >= 0; i--) {
    key = ka[i];
    if (!_deepEqual(a[key], b[key])) return false;
  }
  return true;
}

// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);

assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
  if (_deepEqual(actual, expected)) {
    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
  }
};

// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);

assert.strictEqual = function strictEqual(actual, expected, message) {
  if (actual !== expected) {
    fail(actual, expected, message, '===', assert.strictEqual);
  }
};

// 10. The strict non-equality assertion tests for strict inequality, as
// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);

assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
  if (actual === expected) {
    fail(actual, expected, message, '!==', assert.notStrictEqual);
  }
};

function expectedException(actual, expected) {
  if (!actual || !expected) {
    return false;
  }

  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
    return expected.test(actual);
  } else if (actual instanceof expected) {
    return true;
  } else if (expected.call({}, actual) === true) {
    return true;
  }

  return false;
}

function _throws(shouldThrow, block, expected, message) {
  var actual;

  if (util.isString(expected)) {
    message = expected;
    expected = null;
  }

  try {
    block();
  } catch (e) {
    actual = e;
  }

  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
            (message ? ' ' + message : '.');

  if (shouldThrow && !actual) {
    fail(actual, expected, 'Missing expected exception' + message);
  }

  if (!shouldThrow && expectedException(actual, expected)) {
    fail(actual, expected, 'Got unwanted exception' + message);
  }

  if ((shouldThrow && actual && expected &&
      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
    throw actual;
  }
}

// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);

assert.throws = function(block, /*optional*/error, /*optional*/message) {
  _throws.apply(this, [true].concat(pSlice.call(arguments)));
};

// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/message) {
  _throws.apply(this, [false].concat(pSlice.call(arguments)));
};

assert.ifError = function(err) { if (err) {throw err;}};
},{"_shims":8,"util":14}],10:[function(require,module,exports){

// not implemented
// The reason for having an empty file and not throwing is to allow
// untraditional implementation of this module.

},{}],11:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// Query String Utilities

var QueryString = exports;
var util = require('util');
var shims = require('_shims');
var Buffer = require('buffer').Buffer;

// If obj.hasOwnProperty has been overridden, then calling
// obj.hasOwnProperty(prop) will break.
// See: https://github.com/joyent/node/issues/1707
function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}


function charCode(c) {
  return c.charCodeAt(0);
}


// a safe fast alternative to decodeURIComponent
QueryString.unescapeBuffer = function(s, decodeSpaces) {
  var out = new Buffer(s.length);
  var state = 'CHAR'; // states: CHAR, HEX0, HEX1
  var n, m, hexchar;

  for (var inIndex = 0, outIndex = 0; inIndex <= s.length; inIndex++) {
    var c = s.charCodeAt(inIndex);
    switch (state) {
      case 'CHAR':
        switch (c) {
          case charCode('%'):
            n = 0;
            m = 0;
            state = 'HEX0';
            break;
          case charCode('+'):
            if (decodeSpaces) c = charCode(' ');
            // pass thru
          default:
            out[outIndex++] = c;
            break;
        }
        break;

      case 'HEX0':
        state = 'HEX1';
        hexchar = c;
        if (charCode('0') <= c && c <= charCode('9')) {
          n = c - charCode('0');
        } else if (charCode('a') <= c && c <= charCode('f')) {
          n = c - charCode('a') + 10;
        } else if (charCode('A') <= c && c <= charCode('F')) {
          n = c - charCode('A') + 10;
        } else {
          out[outIndex++] = charCode('%');
          out[outIndex++] = c;
          state = 'CHAR';
          break;
        }
        break;

      case 'HEX1':
        state = 'CHAR';
        if (charCode('0') <= c && c <= charCode('9')) {
          m = c - charCode('0');
        } else if (charCode('a') <= c && c <= charCode('f')) {
          m = c - charCode('a') + 10;
        } else if (charCode('A') <= c && c <= charCode('F')) {
          m = c - charCode('A') + 10;
        } else {
          out[outIndex++] = charCode('%');
          out[outIndex++] = hexchar;
          out[outIndex++] = c;
          break;
        }
        out[outIndex++] = 16 * n + m;
        break;
    }
  }

  // TODO support returning arbitrary buffers.

  return out.slice(0, outIndex - 1);
};


QueryString.unescape = function(s, decodeSpaces) {
  return QueryString.unescapeBuffer(s, decodeSpaces).toString();
};


QueryString.escape = function(str) {
  return encodeURIComponent(str);
};

var stringifyPrimitive = function(v) {
  if (util.isString(v))
    return v;
  if (util.isBoolean(v))
    return v ? 'true' : 'false';
  if (util.isNumber(v))
    return isFinite(v) ? v : '';
  return '';
};


QueryString.stringify = QueryString.encode = function(obj, sep, eq, name) {
  sep = sep || '&';
  eq = eq || '=';
  if (util.isNull(obj)) {
    obj = undefined;
  }

  if (util.isObject(obj)) {
    return shims.map(shims.keys(obj), function(k) {
      var ks = QueryString.escape(stringifyPrimitive(k)) + eq;
      if (util.isArray(obj[k])) {
        return shims.map(obj[k], function(v) {
          return ks + QueryString.escape(stringifyPrimitive(v));
        }).join(sep);
      } else {
        return ks + QueryString.escape(stringifyPrimitive(obj[k]));
      }
    }).join(sep);

  }

  if (!name) return '';
  return QueryString.escape(stringifyPrimitive(name)) + eq +
         QueryString.escape(stringifyPrimitive(obj));
};

// Parse a key=val string.
QueryString.parse = QueryString.decode = function(qs, sep, eq, options) {
  sep = sep || '&';
  eq = eq || '=';
  var obj = {};

  if (!util.isString(qs) || qs.length === 0) {
    return obj;
  }

  var regexp = /\+/g;
  qs = qs.split(sep);

  var maxKeys = 1000;
  if (options && util.isNumber(options.maxKeys)) {
    maxKeys = options.maxKeys;
  }

  var len = qs.length;
  // maxKeys <= 0 means that we should not limit keys count
  if (maxKeys > 0 && len > maxKeys) {
    len = maxKeys;
  }

  for (var i = 0; i < len; ++i) {
    var x = qs[i].replace(regexp, '%20'),
        idx = x.indexOf(eq),
        kstr, vstr, k, v;

    if (idx >= 0) {
      kstr = x.substr(0, idx);
      vstr = x.substr(idx + 1);
    } else {
      kstr = x;
      vstr = '';
    }

    try {
      k = decodeURIComponent(kstr);
      v = decodeURIComponent(vstr);
    } catch (e) {
      k = QueryString.unescape(kstr, true);
      v = QueryString.unescape(vstr, true);
    }

    if (!hasOwnProperty(obj, k)) {
      obj[k] = v;
    } else if (util.isArray(obj[k])) {
      obj[k].push(v);
    } else {
      obj[k] = [obj[k], v];
    }
  }

  return obj;
};
},{"_shims":8,"buffer":16,"util":14}],12:[function(require,module,exports){

exports.isatty = function () { return false; };

function ReadStream() {
  throw new Error('tty.ReadStream is not implemented');
}
exports.ReadStream = ReadStream;

function WriteStream() {
  throw new Error('tty.ReadStream is not implemented');
}
exports.WriteStream = WriteStream;

},{}],13:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var punycode = { encode : function (s) { return s } };
var util = require('util');
var shims = require('_shims');

exports.parse = urlParse;
exports.resolve = urlResolve;
exports.resolveObject = urlResolveObject;
exports.format = urlFormat;

exports.Url = Url;

function Url() {
  this.protocol = null;
  this.slashes = null;
  this.auth = null;
  this.host = null;
  this.port = null;
  this.hostname = null;
  this.hash = null;
  this.search = null;
  this.query = null;
  this.pathname = null;
  this.path = null;
  this.href = null;
}

// Reference: RFC 3986, RFC 1808, RFC 2396

// define these here so at least they only have to be
// compiled once on the first module load.
var protocolPattern = /^([a-z0-9.+-]+:)/i,
    portPattern = /:[0-9]*$/,

    // RFC 2396: characters reserved for delimiting URLs.
    // We actually just auto-escape these.
    delims = ['<', '>', '"', '`', ' ', '\r', '\n', '\t'],

    // RFC 2396: characters not allowed for various reasons.
    unwise = ['{', '}', '|', '\\', '^', '`'].concat(delims),

    // Allowed by RFCs, but cause of XSS attacks.  Always escape these.
    autoEscape = ['\''].concat(unwise),
    // Characters that are never ever allowed in a hostname.
    // Note that any invalid chars are also handled, but these
    // are the ones that are *expected* to be seen, so we fast-path
    // them.
    nonHostChars = ['%', '/', '?', ';', '#'].concat(autoEscape),
    hostEndingChars = ['/', '?', '#'],
    hostnameMaxLen = 255,
    hostnamePartPattern = /^[a-z0-9A-Z_-]{0,63}$/,
    hostnamePartStart = /^([a-z0-9A-Z_-]{0,63})(.*)$/,
    // protocols that can allow "unsafe" and "unwise" chars.
    unsafeProtocol = {
      'javascript': true,
      'javascript:': true
    },
    // protocols that never have a hostname.
    hostlessProtocol = {
      'javascript': true,
      'javascript:': true
    },
    // protocols that always contain a // bit.
    slashedProtocol = {
      'http': true,
      'https': true,
      'ftp': true,
      'gopher': true,
      'file': true,
      'http:': true,
      'https:': true,
      'ftp:': true,
      'gopher:': true,
      'file:': true
    },
    querystring = require('querystring');

function urlParse(url, parseQueryString, slashesDenoteHost) {
  if (url && util.isObject(url) && url instanceof Url) return url;

  var u = new Url;
  u.parse(url, parseQueryString, slashesDenoteHost);
  return u;
}

Url.prototype.parse = function(url, parseQueryString, slashesDenoteHost) {
  if (!util.isString(url)) {
    throw new TypeError("Parameter 'url' must be a string, not " + typeof url);
  }

  var rest = url;

  // trim before proceeding.
  // This is to support parse stuff like "  http://foo.com  \n"
  rest = shims.trim(rest);

  var proto = protocolPattern.exec(rest);
  if (proto) {
    proto = proto[0];
    var lowerProto = proto.toLowerCase();
    this.protocol = lowerProto;
    rest = rest.substr(proto.length);
  }

  // figure out if it's got a host
  // user@server is *always* interpreted as a hostname, and url
  // resolution will treat //foo/bar as host=foo,path=bar because that's
  // how the browser resolves relative URLs.
  if (slashesDenoteHost || proto || rest.match(/^\/\/[^@\/]+@[^@\/]+/)) {
    var slashes = rest.substr(0, 2) === '//';
    if (slashes && !(proto && hostlessProtocol[proto])) {
      rest = rest.substr(2);
      this.slashes = true;
    }
  }

  if (!hostlessProtocol[proto] &&
      (slashes || (proto && !slashedProtocol[proto]))) {

    // there's a hostname.
    // the first instance of /, ?, ;, or # ends the host.
    //
    // If there is an @ in the hostname, then non-host chars *are* allowed
    // to the left of the last @ sign, unless some host-ending character
    // comes *before* the @-sign.
    // URLs are obnoxious.
    //
    // ex:
    // http://a@b@c/ => user:a@b host:c
    // http://a@b?@c => user:a host:c path:/?@c

    // v0.12 TODO(isaacs): This is not quite how Chrome does things.
    // Review our test case against browsers more comprehensively.

    // find the first instance of any hostEndingChars
    var hostEnd = -1;
    for (var i = 0; i < hostEndingChars.length; i++) {
      var hec = rest.indexOf(hostEndingChars[i]);
      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
        hostEnd = hec;
    }

    // at this point, either we have an explicit point where the
    // auth portion cannot go past, or the last @ char is the decider.
    var auth, atSign;
    if (hostEnd === -1) {
      // atSign can be anywhere.
      atSign = rest.lastIndexOf('@');
    } else {
      // atSign must be in auth portion.
      // http://a@b/c@d => host:b auth:a path:/c@d
      atSign = rest.lastIndexOf('@', hostEnd);
    }

    // Now we have a portion which is definitely the auth.
    // Pull that off.
    if (atSign !== -1) {
      auth = rest.slice(0, atSign);
      rest = rest.slice(atSign + 1);
      this.auth = decodeURIComponent(auth);
    }

    // the host is the remaining to the left of the first non-host char
    hostEnd = -1;
    for (var i = 0; i < nonHostChars.length; i++) {
      var hec = rest.indexOf(nonHostChars[i]);
      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
        hostEnd = hec;
    }
    // if we still have not hit it, then the entire thing is a host.
    if (hostEnd === -1)
      hostEnd = rest.length;

    this.host = rest.slice(0, hostEnd);
    rest = rest.slice(hostEnd);

    // pull out port.
    this.parseHost();

    // we've indicated that there is a hostname,
    // so even if it's empty, it has to be present.
    this.hostname = this.hostname || '';

    // if hostname begins with [ and ends with ]
    // assume that it's an IPv6 address.
    var ipv6Hostname = this.hostname[0] === '[' &&
        this.hostname[this.hostname.length - 1] === ']';

    // validate a little.
    if (!ipv6Hostname) {
      var hostparts = this.hostname.split(/\./);
      for (var i = 0, l = hostparts.length; i < l; i++) {
        var part = hostparts[i];
        if (!part) continue;
        if (!part.match(hostnamePartPattern)) {
          var newpart = '';
          for (var j = 0, k = part.length; j < k; j++) {
            if (part.charCodeAt(j) > 127) {
              // we replace non-ASCII char with a temporary placeholder
              // we need this to make sure size of hostname is not
              // broken by replacing non-ASCII by nothing
              newpart += 'x';
            } else {
              newpart += part[j];
            }
          }
          // we test again with ASCII char only
          if (!newpart.match(hostnamePartPattern)) {
            var validParts = hostparts.slice(0, i);
            var notHost = hostparts.slice(i + 1);
            var bit = part.match(hostnamePartStart);
            if (bit) {
              validParts.push(bit[1]);
              notHost.unshift(bit[2]);
            }
            if (notHost.length) {
              rest = '/' + notHost.join('.') + rest;
            }
            this.hostname = validParts.join('.');
            break;
          }
        }
      }
    }

    if (this.hostname.length > hostnameMaxLen) {
      this.hostname = '';
    } else {
      // hostnames are always lower case.
      this.hostname = this.hostname.toLowerCase();
    }

    if (!ipv6Hostname) {
      // IDNA Support: Returns a puny coded representation of "domain".
      // It only converts the part of the domain name that
      // has non ASCII characters. I.e. it dosent matter if
      // you call it with a domain that already is in ASCII.
      var domainArray = this.hostname.split('.');
      var newOut = [];
      for (var i = 0; i < domainArray.length; ++i) {
        var s = domainArray[i];
        newOut.push(s.match(/[^A-Za-z0-9_-]/) ?
            'xn--' + punycode.encode(s) : s);
      }
      this.hostname = newOut.join('.');
    }

    var p = this.port ? ':' + this.port : '';
    var h = this.hostname || '';
    this.host = h + p;
    this.href += this.host;

    // strip [ and ] from the hostname
    // the host field still retains them, though
    if (ipv6Hostname) {
      this.hostname = this.hostname.substr(1, this.hostname.length - 2);
      if (rest[0] !== '/') {
        rest = '/' + rest;
      }
    }
  }

  // now rest is set to the post-host stuff.
  // chop off any delim chars.
  if (!unsafeProtocol[lowerProto]) {

    // First, make 100% sure that any "autoEscape" chars get
    // escaped, even if encodeURIComponent doesn't think they
    // need to be.
    for (var i = 0, l = autoEscape.length; i < l; i++) {
      var ae = autoEscape[i];
      var esc = encodeURIComponent(ae);
      if (esc === ae) {
        esc = escape(ae);
      }
      rest = rest.split(ae).join(esc);
    }
  }


  // chop off from the tail first.
  var hash = rest.indexOf('#');
  if (hash !== -1) {
    // got a fragment string.
    this.hash = rest.substr(hash);
    rest = rest.slice(0, hash);
  }
  var qm = rest.indexOf('?');
  if (qm !== -1) {
    this.search = rest.substr(qm);
    this.query = rest.substr(qm + 1);
    if (parseQueryString) {
      this.query = querystring.parse(this.query);
    }
    rest = rest.slice(0, qm);
  } else if (parseQueryString) {
    // no query string, but parseQueryString still requested
    this.search = '';
    this.query = {};
  }
  if (rest) this.pathname = rest;
  if (slashedProtocol[lowerProto] &&
      this.hostname && !this.pathname) {
    this.pathname = '/';
  }

  //to support http.request
  if (this.pathname || this.search) {
    var p = this.pathname || '';
    var s = this.search || '';
    this.path = p + s;
  }

  // finally, reconstruct the href based on what has been validated.
  this.href = this.format();
  return this;
};

// format a parsed object into a url string
function urlFormat(obj) {
  // ensure it's an object, and not a string url.
  // If it's an obj, this is a no-op.
  // this way, you can call url_format() on strings
  // to clean up potentially wonky urls.
  if (util.isString(obj)) obj = urlParse(obj);
  if (!(obj instanceof Url)) return Url.prototype.format.call(obj);
  return obj.format();
}

Url.prototype.format = function() {
  var auth = this.auth || '';
  if (auth) {
    auth = encodeURIComponent(auth);
    auth = auth.replace(/%3A/i, ':');
    auth += '@';
  }

  var protocol = this.protocol || '',
      pathname = this.pathname || '',
      hash = this.hash || '',
      host = false,
      query = '';

  if (this.host) {
    host = auth + this.host;
  } else if (this.hostname) {
    host = auth + (this.hostname.indexOf(':') === -1 ?
        this.hostname :
        '[' + this.hostname + ']');
    if (this.port) {
      host += ':' + this.port;
    }
  }

  if (this.query &&
      util.isObject(this.query) &&
      shims.keys(this.query).length) {
    query = querystring.stringify(this.query);
  }

  var search = this.search || (query && ('?' + query)) || '';

  if (protocol && shims.substr(protocol, -1) !== ':') protocol += ':';

  // only the slashedProtocols get the //.  Not mailto:, xmpp:, etc.
  // unless they had them to begin with.
  if (this.slashes ||
      (!protocol || slashedProtocol[protocol]) && host !== false) {
    host = '//' + (host || '');
    if (pathname && pathname.charAt(0) !== '/') pathname = '/' + pathname;
  } else if (!host) {
    host = '';
  }

  if (hash && hash.charAt(0) !== '#') hash = '#' + hash;
  if (search && search.charAt(0) !== '?') search = '?' + search;

  pathname = pathname.replace(/[?#]/g, function(match) {
    return encodeURIComponent(match);
  });
  search = search.replace('#', '%23');

  return protocol + host + pathname + search + hash;
};

function urlResolve(source, relative) {
  return urlParse(source, false, true).resolve(relative);
}

Url.prototype.resolve = function(relative) {
  return this.resolveObject(urlParse(relative, false, true)).format();
};

function urlResolveObject(source, relative) {
  if (!source) return relative;
  return urlParse(source, false, true).resolveObject(relative);
}

Url.prototype.resolveObject = function(relative) {
  if (util.isString(relative)) {
    var rel = new Url();
    rel.parse(relative, false, true);
    relative = rel;
  }

  var result = new Url();
  shims.forEach(shims.keys(this), function(k) {
    result[k] = this[k];
  }, this);

  // hash is always overridden, no matter what.
  // even href="" will remove it.
  result.hash = relative.hash;

  // if the relative url is empty, then there's nothing left to do here.
  if (relative.href === '') {
    result.href = result.format();
    return result;
  }

  // hrefs like //foo/bar always cut to the protocol.
  if (relative.slashes && !relative.protocol) {
    // take everything except the protocol from relative
    shims.forEach(shims.keys(relative), function(k) {
      if (k !== 'protocol')
        result[k] = relative[k];
    });

    //urlParse appends trailing / to urls like http://www.example.com
    if (slashedProtocol[result.protocol] &&
        result.hostname && !result.pathname) {
      result.path = result.pathname = '/';
    }

    result.href = result.format();
    return result;
  }

  if (relative.protocol && relative.protocol !== result.protocol) {
    // if it's a known url protocol, then changing
    // the protocol does weird things
    // first, if it's not file:, then we MUST have a host,
    // and if there was a path
    // to begin with, then we MUST have a path.
    // if it is file:, then the host is dropped,
    // because that's known to be hostless.
    // anything else is assumed to be absolute.
    if (!slashedProtocol[relative.protocol]) {
      shims.forEach(shims.keys(relative), function(k) {
        result[k] = relative[k];
      });
      result.href = result.format();
      return result;
    }

    result.protocol = relative.protocol;
    if (!relative.host && !hostlessProtocol[relative.protocol]) {
      var relPath = (relative.pathname || '').split('/');
      while (relPath.length && !(relative.host = relPath.shift()));
      if (!relative.host) relative.host = '';
      if (!relative.hostname) relative.hostname = '';
      if (relPath[0] !== '') relPath.unshift('');
      if (relPath.length < 2) relPath.unshift('');
      result.pathname = relPath.join('/');
    } else {
      result.pathname = relative.pathname;
    }
    result.search = relative.search;
    result.query = relative.query;
    result.host = relative.host || '';
    result.auth = relative.auth;
    result.hostname = relative.hostname || relative.host;
    result.port = relative.port;
    // to support http.request
    if (result.pathname || result.search) {
      var p = result.pathname || '';
      var s = result.search || '';
      result.path = p + s;
    }
    result.slashes = result.slashes || relative.slashes;
    result.href = result.format();
    return result;
  }

  var isSourceAbs = (result.pathname && result.pathname.charAt(0) === '/'),
      isRelAbs = (
          relative.host ||
          relative.pathname && relative.pathname.charAt(0) === '/'
      ),
      mustEndAbs = (isRelAbs || isSourceAbs ||
                    (result.host && relative.pathname)),
      removeAllDots = mustEndAbs,
      srcPath = result.pathname && result.pathname.split('/') || [],
      relPath = relative.pathname && relative.pathname.split('/') || [],
      psychotic = result.protocol && !slashedProtocol[result.protocol];

  // if the url is a non-slashed url, then relative
  // links like ../.. should be able
  // to crawl up to the hostname, as well.  This is strange.
  // result.protocol has already been set by now.
  // Later on, put the first path part into the host field.
  if (psychotic) {
    result.hostname = '';
    result.port = null;
    if (result.host) {
      if (srcPath[0] === '') srcPath[0] = result.host;
      else srcPath.unshift(result.host);
    }
    result.host = '';
    if (relative.protocol) {
      relative.hostname = null;
      relative.port = null;
      if (relative.host) {
        if (relPath[0] === '') relPath[0] = relative.host;
        else relPath.unshift(relative.host);
      }
      relative.host = null;
    }
    mustEndAbs = mustEndAbs && (relPath[0] === '' || srcPath[0] === '');
  }

  if (isRelAbs) {
    // it's absolute.
    result.host = (relative.host || relative.host === '') ?
                  relative.host : result.host;
    result.hostname = (relative.hostname || relative.hostname === '') ?
                      relative.hostname : result.hostname;
    result.search = relative.search;
    result.query = relative.query;
    srcPath = relPath;
    // fall through to the dot-handling below.
  } else if (relPath.length) {
    // it's relative
    // throw away the existing file, and take the new path instead.
    if (!srcPath) srcPath = [];
    srcPath.pop();
    srcPath = srcPath.concat(relPath);
    result.search = relative.search;
    result.query = relative.query;
  } else if (!util.isNullOrUndefined(relative.search)) {
    // just pull out the search.
    // like href='?foo'.
    // Put this after the other two cases because it simplifies the booleans
    if (psychotic) {
      result.hostname = result.host = srcPath.shift();
      //occationaly the auth can get stuck only in host
      //this especialy happens in cases like
      //url.resolveObject('mailto:local1@domain1', 'local2@domain2')
      var authInHost = result.host && result.host.indexOf('@') > 0 ?
                       result.host.split('@') : false;
      if (authInHost) {
        result.auth = authInHost.shift();
        result.host = result.hostname = authInHost.shift();
      }
    }
    result.search = relative.search;
    result.query = relative.query;
    //to support http.request
    if (!util.isNull(result.pathname) || !util.isNull(result.search)) {
      result.path = (result.pathname ? result.pathname : '') +
                    (result.search ? result.search : '');
    }
    result.href = result.format();
    return result;
  }

  if (!srcPath.length) {
    // no path at all.  easy.
    // we've already handled the other stuff above.
    result.pathname = null;
    //to support http.request
    if (result.search) {
      result.path = '/' + result.search;
    } else {
      result.path = null;
    }
    result.href = result.format();
    return result;
  }

  // if a url ENDs in . or .., then it must get a trailing slash.
  // however, if it ends in anything else non-slashy,
  // then it must NOT get a trailing slash.
  var last = srcPath.slice(-1)[0];
  var hasTrailingSlash = (
      (result.host || relative.host) && (last === '.' || last === '..') ||
      last === '');

  // strip single dots, resolve double dots to parent dir
  // if the path tries to go above the root, `up` ends up > 0
  var up = 0;
  for (var i = srcPath.length; i >= 0; i--) {
    last = srcPath[i];
    if (last == '.') {
      srcPath.splice(i, 1);
    } else if (last === '..') {
      srcPath.splice(i, 1);
      up++;
    } else if (up) {
      srcPath.splice(i, 1);
      up--;
    }
  }

  // if the path is allowed to go above the root, restore leading ..s
  if (!mustEndAbs && !removeAllDots) {
    for (; up--; up) {
      srcPath.unshift('..');
    }
  }

  if (mustEndAbs && srcPath[0] !== '' &&
      (!srcPath[0] || srcPath[0].charAt(0) !== '/')) {
    srcPath.unshift('');
  }

  if (hasTrailingSlash && (shims.substr(srcPath.join('/'), -1) !== '/')) {
    srcPath.push('');
  }

  var isAbsolute = srcPath[0] === '' ||
      (srcPath[0] && srcPath[0].charAt(0) === '/');

  // put the host back
  if (psychotic) {
    result.hostname = result.host = isAbsolute ? '' :
                                    srcPath.length ? srcPath.shift() : '';
    //occationaly the auth can get stuck only in host
    //this especialy happens in cases like
    //url.resolveObject('mailto:local1@domain1', 'local2@domain2')
    var authInHost = result.host && result.host.indexOf('@') > 0 ?
                     result.host.split('@') : false;
    if (authInHost) {
      result.auth = authInHost.shift();
      result.host = result.hostname = authInHost.shift();
    }
  }

  mustEndAbs = mustEndAbs || (result.host && srcPath.length);

  if (mustEndAbs && !isAbsolute) {
    srcPath.unshift('');
  }

  if (!srcPath.length) {
    result.pathname = null;
    result.path = null;
  } else {
    result.pathname = srcPath.join('/');
  }

  //to support request.http
  if (!util.isNull(result.pathname) || !util.isNull(result.search)) {
    result.path = (result.pathname ? result.pathname : '') +
                  (result.search ? result.search : '');
  }
  result.auth = relative.auth || result.auth;
  result.slashes = result.slashes || relative.slashes;
  result.href = result.format();
  return result;
};

Url.prototype.parseHost = function() {
  var host = this.host;
  var port = portPattern.exec(host);
  if (port) {
    port = port[0];
    if (port !== ':') {
      this.port = port.substr(1);
    }
    host = host.substr(0, host.length - port.length);
  }
  if (host) this.hostname = host;
};
},{"_shims":8,"querystring":11,"util":14}],14:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var shims = require('_shims');

var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
  if (!isString(f)) {
    var objects = [];
    for (var i = 0; i < arguments.length; i++) {
      objects.push(inspect(arguments[i]));
    }
    return objects.join(' ');
  }

  var i = 1;
  var args = arguments;
  var len = args.length;
  var str = String(f).replace(formatRegExp, function(x) {
    if (x === '%%') return '%';
    if (i >= len) return x;
    switch (x) {
      case '%s': return String(args[i++]);
      case '%d': return Number(args[i++]);
      case '%j':
        try {
          return JSON.stringify(args[i++]);
        } catch (_) {
          return '[Circular]';
        }
      default:
        return x;
    }
  });
  for (var x = args[i]; i < len; x = args[++i]) {
    if (isNull(x) || !isObject(x)) {
      str += ' ' + x;
    } else {
      str += ' ' + inspect(x);
    }
  }
  return str;
};

/**
 * Echos the value of a value. Trys to print the value out
 * in the best way possible given the different types.
 *
 * @param {Object} obj The object to print out.
 * @param {Object} opts Optional options object that alters the output.
 */
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
  // default options
  var ctx = {
    seen: [],
    stylize: stylizeNoColor
  };
  // legacy...
  if (arguments.length >= 3) ctx.depth = arguments[2];
  if (arguments.length >= 4) ctx.colors = arguments[3];
  if (isBoolean(opts)) {
    // legacy...
    ctx.showHidden = opts;
  } else if (opts) {
    // got an "options" object
    exports._extend(ctx, opts);
  }
  // set default options
  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
  if (isUndefined(ctx.depth)) ctx.depth = 2;
  if (isUndefined(ctx.colors)) ctx.colors = false;
  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
  if (ctx.colors) ctx.stylize = stylizeWithColor;
  return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;


// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
  'bold' : [1, 22],
  'italic' : [3, 23],
  'underline' : [4, 24],
  'inverse' : [7, 27],
  'white' : [37, 39],
  'grey' : [90, 39],
  'black' : [30, 39],
  'blue' : [34, 39],
  'cyan' : [36, 39],
  'green' : [32, 39],
  'magenta' : [35, 39],
  'red' : [31, 39],
  'yellow' : [33, 39]
};

// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
  'special': 'cyan',
  'number': 'yellow',
  'boolean': 'yellow',
  'undefined': 'grey',
  'null': 'bold',
  'string': 'green',
  'date': 'magenta',
  // "name": intentionally not styling
  'regexp': 'red'
};


function stylizeWithColor(str, styleType) {
  var style = inspect.styles[styleType];

  if (style) {
    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
           '\u001b[' + inspect.colors[style][1] + 'm';
  } else {
    return str;
  }
}


function stylizeNoColor(str, styleType) {
  return str;
}


function arrayToHash(array) {
  var hash = {};

  shims.forEach(array, function(val, idx) {
    hash[val] = true;
  });

  return hash;
}


function formatValue(ctx, value, recurseTimes) {
  // Provide a hook for user-specified inspect functions.
  // Check that value is an object with an inspect function on it
  if (ctx.customInspect &&
      value &&
      isFunction(value.inspect) &&
      // Filter out the util module, it's inspect function is special
      value.inspect !== exports.inspect &&
      // Also filter out any prototype objects using the circular check.
      !(value.constructor && value.constructor.prototype === value)) {
    var ret = value.inspect(recurseTimes);
    if (!isString(ret)) {
      ret = formatValue(ctx, ret, recurseTimes);
    }
    return ret;
  }

  // Primitive types cannot have properties
  var primitive = formatPrimitive(ctx, value);
  if (primitive) {
    return primitive;
  }

  // Look up the keys of the object.
  var keys = shims.keys(value);
  var visibleKeys = arrayToHash(keys);

  if (ctx.showHidden) {
    keys = shims.getOwnPropertyNames(value);
  }

  // Some type of object without properties can be shortcutted.
  if (keys.length === 0) {
    if (isFunction(value)) {
      var name = value.name ? ': ' + value.name : '';
      return ctx.stylize('[Function' + name + ']', 'special');
    }
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    }
    if (isDate(value)) {
      return ctx.stylize(Date.prototype.toString.call(value), 'date');
    }
    if (isError(value)) {
      return formatError(value);
    }
  }

  var base = '', array = false, braces = ['{', '}'];

  // Make Array say that they are Array
  if (isArray(value)) {
    array = true;
    braces = ['[', ']'];
  }

  // Make functions say that they are functions
  if (isFunction(value)) {
    var n = value.name ? ': ' + value.name : '';
    base = ' [Function' + n + ']';
  }

  // Make RegExps say that they are RegExps
  if (isRegExp(value)) {
    base = ' ' + RegExp.prototype.toString.call(value);
  }

  // Make dates with properties first say the date
  if (isDate(value)) {
    base = ' ' + Date.prototype.toUTCString.call(value);
  }

  // Make error with message first say the error
  if (isError(value)) {
    base = ' ' + formatError(value);
  }

  if (keys.length === 0 && (!array || value.length == 0)) {
    return braces[0] + base + braces[1];
  }

  if (recurseTimes < 0) {
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    } else {
      return ctx.stylize('[Object]', 'special');
    }
  }

  ctx.seen.push(value);

  var output;
  if (array) {
    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
  } else {
    output = keys.map(function(key) {
      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
    });
  }

  ctx.seen.pop();

  return reduceToSingleString(output, base, braces);
}


function formatPrimitive(ctx, value) {
  if (isUndefined(value))
    return ctx.stylize('undefined', 'undefined');
  if (isString(value)) {
    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
                                             .replace(/'/g, "\\'")
                                             .replace(/\\"/g, '"') + '\'';
    return ctx.stylize(simple, 'string');
  }
  if (isNumber(value))
    return ctx.stylize('' + value, 'number');
  if (isBoolean(value))
    return ctx.stylize('' + value, 'boolean');
  // For some reason typeof null is "object", so special case here.
  if (isNull(value))
    return ctx.stylize('null', 'null');
}


function formatError(value) {
  return '[' + Error.prototype.toString.call(value) + ']';
}


function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
  var output = [];
  for (var i = 0, l = value.length; i < l; ++i) {
    if (hasOwnProperty(value, String(i))) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          String(i), true));
    } else {
      output.push('');
    }
  }

  shims.forEach(keys, function(key) {
    if (!key.match(/^\d+$/)) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          key, true));
    }
  });
  return output;
}


function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
  var name, str, desc;
  desc = shims.getOwnPropertyDescriptor(value, key) || { value: value[key] };
  if (desc.get) {
    if (desc.set) {
      str = ctx.stylize('[Getter/Setter]', 'special');
    } else {
      str = ctx.stylize('[Getter]', 'special');
    }
  } else {
    if (desc.set) {
      str = ctx.stylize('[Setter]', 'special');
    }
  }

  if (!hasOwnProperty(visibleKeys, key)) {
    name = '[' + key + ']';
  }
  if (!str) {
    if (shims.indexOf(ctx.seen, desc.value) < 0) {
      if (isNull(recurseTimes)) {
        str = formatValue(ctx, desc.value, null);
      } else {
        str = formatValue(ctx, desc.value, recurseTimes - 1);
      }
      if (str.indexOf('\n') > -1) {
        if (array) {
          str = str.split('\n').map(function(line) {
            return '  ' + line;
          }).join('\n').substr(2);
        } else {
          str = '\n' + str.split('\n').map(function(line) {
            return '   ' + line;
          }).join('\n');
        }
      }
    } else {
      str = ctx.stylize('[Circular]', 'special');
    }
  }
  if (isUndefined(name)) {
    if (array && key.match(/^\d+$/)) {
      return str;
    }
    name = JSON.stringify('' + key);
    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
      name = name.substr(1, name.length - 2);
      name = ctx.stylize(name, 'name');
    } else {
      name = name.replace(/'/g, "\\'")
                 .replace(/\\"/g, '"')
                 .replace(/(^"|"$)/g, "'");
      name = ctx.stylize(name, 'string');
    }
  }

  return name + ': ' + str;
}


function reduceToSingleString(output, base, braces) {
  var numLinesEst = 0;
  var length = shims.reduce(output, function(prev, cur) {
    numLinesEst++;
    if (cur.indexOf('\n') >= 0) numLinesEst++;
    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
  }, 0);

  if (length > 60) {
    return braces[0] +
           (base === '' ? '' : base + '\n ') +
           ' ' +
           output.join(',\n  ') +
           ' ' +
           braces[1];
  }

  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}


// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return shims.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) && objectToString(e) === '[object Error]';
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

function isBuffer(arg) {
  return arg && typeof arg === 'object'
    && typeof arg.copy === 'function'
    && typeof arg.fill === 'function'
    && typeof arg.binarySlice === 'function'
  ;
}
exports.isBuffer = isBuffer;

function objectToString(o) {
  return Object.prototype.toString.call(o);
}


function pad(n) {
  return n < 10 ? '0' + n.toString(10) : n.toString(10);
}


var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
              'Oct', 'Nov', 'Dec'];

// 26 Feb 16:19:34
function timestamp() {
  var d = new Date();
  var time = [pad(d.getHours()),
              pad(d.getMinutes()),
              pad(d.getSeconds())].join(':');
  return [d.getDate(), months[d.getMonth()], time].join(' ');
}


// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};


/**
 * Inherit the prototype methods from one constructor into another.
 *
 * The Function.prototype.inherits from lang.js rewritten as a standalone
 * function (not on Function.prototype). NOTE: If this file is to be loaded
 * during bootstrapping this function needs to be rewritten using some native
 * functions as prototype setup using normal JavaScript does not work as
 * expected during bootstrapping (see mirror.js in r114903).
 *
 * @param {function} ctor Constructor function which needs to inherit the
 *     prototype.
 * @param {function} superCtor Constructor function to inherit prototype from.
 */
exports.inherits = function(ctor, superCtor) {
  ctor.super_ = superCtor;
  ctor.prototype = shims.create(superCtor.prototype, {
    constructor: {
      value: ctor,
      enumerable: false,
      writable: true,
      configurable: true
    }
  });
};

exports._extend = function(origin, add) {
  // Don't do anything if add isn't an object
  if (!add || !isObject(add)) return origin;

  var keys = shims.keys(add);
  var i = keys.length;
  while (i--) {
    origin[keys[i]] = add[keys[i]];
  }
  return origin;
};

function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

},{"_shims":8}],15:[function(require,module,exports){
exports.readIEEE754 = function(buffer, offset, isBE, mLen, nBytes) {
  var e, m,
      eLen = nBytes * 8 - mLen - 1,
      eMax = (1 << eLen) - 1,
      eBias = eMax >> 1,
      nBits = -7,
      i = isBE ? 0 : (nBytes - 1),
      d = isBE ? 1 : -1,
      s = buffer[offset + i];

  i += d;

  e = s & ((1 << (-nBits)) - 1);
  s >>= (-nBits);
  nBits += eLen;
  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8);

  m = e & ((1 << (-nBits)) - 1);
  e >>= (-nBits);
  nBits += mLen;
  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8);

  if (e === 0) {
    e = 1 - eBias;
  } else if (e === eMax) {
    return m ? NaN : ((s ? -1 : 1) * Infinity);
  } else {
    m = m + Math.pow(2, mLen);
    e = e - eBias;
  }
  return (s ? -1 : 1) * m * Math.pow(2, e - mLen);
};

exports.writeIEEE754 = function(buffer, value, offset, isBE, mLen, nBytes) {
  var e, m, c,
      eLen = nBytes * 8 - mLen - 1,
      eMax = (1 << eLen) - 1,
      eBias = eMax >> 1,
      rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0),
      i = isBE ? (nBytes - 1) : 0,
      d = isBE ? -1 : 1,
      s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0;

  value = Math.abs(value);

  if (isNaN(value) || value === Infinity) {
    m = isNaN(value) ? 1 : 0;
    e = eMax;
  } else {
    e = Math.floor(Math.log(value) / Math.LN2);
    if (value * (c = Math.pow(2, -e)) < 1) {
      e--;
      c *= 2;
    }
    if (e + eBias >= 1) {
      value += rt / c;
    } else {
      value += rt * Math.pow(2, 1 - eBias);
    }
    if (value * c >= 2) {
      e++;
      c /= 2;
    }

    if (e + eBias >= eMax) {
      m = 0;
      e = eMax;
    } else if (e + eBias >= 1) {
      m = (value * c - 1) * Math.pow(2, mLen);
      e = e + eBias;
    } else {
      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen);
      e = 0;
    }
  }

  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8);

  e = (e << mLen) | m;
  eLen += mLen;
  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8);

  buffer[offset + i - d] |= s * 128;
};

},{}],16:[function(require,module,exports){
var assert;
exports.Buffer = Buffer;
exports.SlowBuffer = Buffer;
Buffer.poolSize = 8192;
exports.INSPECT_MAX_BYTES = 50;

function stringtrim(str) {
  if (str.trim) return str.trim();
  return str.replace(/^\s+|\s+$/g, '');
}

function Buffer(subject, encoding, offset) {
  if(!assert) assert= require('assert');
  if (!(this instanceof Buffer)) {
    return new Buffer(subject, encoding, offset);
  }
  this.parent = this;
  this.offset = 0;

  // Work-around: node's base64 implementation
  // allows for non-padded strings while base64-js
  // does not..
  if (encoding == "base64" && typeof subject == "string") {
    subject = stringtrim(subject);
    while (subject.length % 4 != 0) {
      subject = subject + "="; 
    }
  }

  var type;

  // Are we slicing?
  if (typeof offset === 'number') {
    this.length = coerce(encoding);
    // slicing works, with limitations (no parent tracking/update)
    // check https://github.com/toots/buffer-browserify/issues/19
    for (var i = 0; i < this.length; i++) {
        this[i] = subject.get(i+offset);
    }
  } else {
    // Find the length
    switch (type = typeof subject) {
      case 'number':
        this.length = coerce(subject);
        break;

      case 'string':
        this.length = Buffer.byteLength(subject, encoding);
        break;

      case 'object': // Assume object is an array
        this.length = coerce(subject.length);
        break;

      default:
        throw new Error('First argument needs to be a number, ' +
                        'array or string.');
    }

    // Treat array-ish objects as a byte array.
    if (isArrayIsh(subject)) {
      for (var i = 0; i < this.length; i++) {
        if (subject instanceof Buffer) {
          this[i] = subject.readUInt8(i);
        }
        else {
          this[i] = subject[i];
        }
      }
    } else if (type == 'string') {
      // We are a string
      this.length = this.write(subject, 0, encoding);
    } else if (type === 'number') {
      for (var i = 0; i < this.length; i++) {
        this[i] = 0;
      }
    }
  }
}

Buffer.prototype.get = function get(i) {
  if (i < 0 || i >= this.length) throw new Error('oob');
  return this[i];
};

Buffer.prototype.set = function set(i, v) {
  if (i < 0 || i >= this.length) throw new Error('oob');
  return this[i] = v;
};

Buffer.byteLength = function (str, encoding) {
  switch (encoding || "utf8") {
    case 'hex':
      return str.length / 2;

    case 'utf8':
    case 'utf-8':
      return utf8ToBytes(str).length;

    case 'ascii':
    case 'binary':
      return str.length;

    case 'base64':
      return base64ToBytes(str).length;

    default:
      throw new Error('Unknown encoding');
  }
};

Buffer.prototype.utf8Write = function (string, offset, length) {
  var bytes, pos;
  return Buffer._charsWritten =  blitBuffer(utf8ToBytes(string), this, offset, length);
};

Buffer.prototype.asciiWrite = function (string, offset, length) {
  var bytes, pos;
  return Buffer._charsWritten =  blitBuffer(asciiToBytes(string), this, offset, length);
};

Buffer.prototype.binaryWrite = Buffer.prototype.asciiWrite;

Buffer.prototype.base64Write = function (string, offset, length) {
  var bytes, pos;
  return Buffer._charsWritten = blitBuffer(base64ToBytes(string), this, offset, length);
};

Buffer.prototype.base64Slice = function (start, end) {
  var bytes = Array.prototype.slice.apply(this, arguments)
  return require("base64-js").fromByteArray(bytes);
};

Buffer.prototype.utf8Slice = function () {
  var bytes = Array.prototype.slice.apply(this, arguments);
  var res = "";
  var tmp = "";
  var i = 0;
  while (i < bytes.length) {
    if (bytes[i] <= 0x7F) {
      res += decodeUtf8Char(tmp) + String.fromCharCode(bytes[i]);
      tmp = "";
    } else
      tmp += "%" + bytes[i].toString(16);

    i++;
  }

  return res + decodeUtf8Char(tmp);
}

Buffer.prototype.asciiSlice = function () {
  var bytes = Array.prototype.slice.apply(this, arguments);
  var ret = "";
  for (var i = 0; i < bytes.length; i++)
    ret += String.fromCharCode(bytes[i]);
  return ret;
}

Buffer.prototype.binarySlice = Buffer.prototype.asciiSlice;

Buffer.prototype.inspect = function() {
  var out = [],
      len = this.length;
  for (var i = 0; i < len; i++) {
    out[i] = toHex(this[i]);
    if (i == exports.INSPECT_MAX_BYTES) {
      out[i + 1] = '...';
      break;
    }
  }
  return '<Buffer ' + out.join(' ') + '>';
};


Buffer.prototype.hexSlice = function(start, end) {
  var len = this.length;

  if (!start || start < 0) start = 0;
  if (!end || end < 0 || end > len) end = len;

  var out = '';
  for (var i = start; i < end; i++) {
    out += toHex(this[i]);
  }
  return out;
};


Buffer.prototype.toString = function(encoding, start, end) {
  encoding = String(encoding || 'utf8').toLowerCase();
  start = +start || 0;
  if (typeof end == 'undefined') end = this.length;

  // Fastpath empty strings
  if (+end == start) {
    return '';
  }

  switch (encoding) {
    case 'hex':
      return this.hexSlice(start, end);

    case 'utf8':
    case 'utf-8':
      return this.utf8Slice(start, end);

    case 'ascii':
      return this.asciiSlice(start, end);

    case 'binary':
      return this.binarySlice(start, end);

    case 'base64':
      return this.base64Slice(start, end);

    case 'ucs2':
    case 'ucs-2':
      return this.ucs2Slice(start, end);

    default:
      throw new Error('Unknown encoding');
  }
};


Buffer.prototype.hexWrite = function(string, offset, length) {
  offset = +offset || 0;
  var remaining = this.length - offset;
  if (!length) {
    length = remaining;
  } else {
    length = +length;
    if (length > remaining) {
      length = remaining;
    }
  }

  // must be an even number of digits
  var strLen = string.length;
  if (strLen % 2) {
    throw new Error('Invalid hex string');
  }
  if (length > strLen / 2) {
    length = strLen / 2;
  }
  for (var i = 0; i < length; i++) {
    var byte = parseInt(string.substr(i * 2, 2), 16);
    if (isNaN(byte)) throw new Error('Invalid hex string');
    this[offset + i] = byte;
  }
  Buffer._charsWritten = i * 2;
  return i;
};


Buffer.prototype.write = function(string, offset, length, encoding) {
  // Support both (string, offset, length, encoding)
  // and the legacy (string, encoding, offset, length)
  if (isFinite(offset)) {
    if (!isFinite(length)) {
      encoding = length;
      length = undefined;
    }
  } else {  // legacy
    var swap = encoding;
    encoding = offset;
    offset = length;
    length = swap;
  }

  offset = +offset || 0;
  var remaining = this.length - offset;
  if (!length) {
    length = remaining;
  } else {
    length = +length;
    if (length > remaining) {
      length = remaining;
    }
  }
  encoding = String(encoding || 'utf8').toLowerCase();

  switch (encoding) {
    case 'hex':
      return this.hexWrite(string, offset, length);

    case 'utf8':
    case 'utf-8':
      return this.utf8Write(string, offset, length);

    case 'ascii':
      return this.asciiWrite(string, offset, length);

    case 'binary':
      return this.binaryWrite(string, offset, length);

    case 'base64':
      return this.base64Write(string, offset, length);

    case 'ucs2':
    case 'ucs-2':
      return this.ucs2Write(string, offset, length);

    default:
      throw new Error('Unknown encoding');
  }
};

// slice(start, end)
function clamp(index, len, defaultValue) {
  if (typeof index !== 'number') return defaultValue;
  index = ~~index;  // Coerce to integer.
  if (index >= len) return len;
  if (index >= 0) return index;
  index += len;
  if (index >= 0) return index;
  return 0;
}

Buffer.prototype.slice = function(start, end) {
  var len = this.length;
  start = clamp(start, len, 0);
  end = clamp(end, len, len);
  return new Buffer(this, end - start, +start);
};

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function(target, target_start, start, end) {
  var source = this;
  start || (start = 0);
  if (end === undefined || isNaN(end)) {
    end = this.length;
  }
  target_start || (target_start = 0);

  if (end < start) throw new Error('sourceEnd < sourceStart');

  // Copy 0 bytes; we're done
  if (end === start) return 0;
  if (target.length == 0 || source.length == 0) return 0;

  if (target_start < 0 || target_start >= target.length) {
    throw new Error('targetStart out of bounds');
  }

  if (start < 0 || start >= source.length) {
    throw new Error('sourceStart out of bounds');
  }

  if (end < 0 || end > source.length) {
    throw new Error('sourceEnd out of bounds');
  }

  // Are we oob?
  if (end > this.length) {
    end = this.length;
  }

  if (target.length - target_start < end - start) {
    end = target.length - target_start + start;
  }

  var temp = [];
  for (var i=start; i<end; i++) {
    assert.ok(typeof this[i] !== 'undefined', "copying undefined buffer bytes!");
    temp.push(this[i]);
  }

  for (var i=target_start; i<target_start+temp.length; i++) {
    target[i] = temp[i-target_start];
  }
};

// fill(value, start=0, end=buffer.length)
Buffer.prototype.fill = function fill(value, start, end) {
  value || (value = 0);
  start || (start = 0);
  end || (end = this.length);

  if (typeof value === 'string') {
    value = value.charCodeAt(0);
  }
  if (!(typeof value === 'number') || isNaN(value)) {
    throw new Error('value is not a number');
  }

  if (end < start) throw new Error('end < start');

  // Fill 0 bytes; we're done
  if (end === start) return 0;
  if (this.length == 0) return 0;

  if (start < 0 || start >= this.length) {
    throw new Error('start out of bounds');
  }

  if (end < 0 || end > this.length) {
    throw new Error('end out of bounds');
  }

  for (var i = start; i < end; i++) {
    this[i] = value;
  }
}

// Static methods
Buffer.isBuffer = function isBuffer(b) {
  return b instanceof Buffer || b instanceof Buffer;
};

Buffer.concat = function (list, totalLength) {
  if (!isArray(list)) {
    throw new Error("Usage: Buffer.concat(list, [totalLength])\n \
      list should be an Array.");
  }

  if (list.length === 0) {
    return new Buffer(0);
  } else if (list.length === 1) {
    return list[0];
  }

  if (typeof totalLength !== 'number') {
    totalLength = 0;
    for (var i = 0; i < list.length; i++) {
      var buf = list[i];
      totalLength += buf.length;
    }
  }

  var buffer = new Buffer(totalLength);
  var pos = 0;
  for (var i = 0; i < list.length; i++) {
    var buf = list[i];
    buf.copy(buffer, pos);
    pos += buf.length;
  }
  return buffer;
};

Buffer.isEncoding = function(encoding) {
  switch ((encoding + '').toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'binary':
    case 'base64':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
    case 'raw':
      return true;

    default:
      return false;
  }
};

// helpers

function coerce(length) {
  // Coerce length to a number (possibly NaN), round up
  // in case it's fractional (e.g. 123.456) then do a
  // double negate to coerce a NaN to 0. Easy, right?
  length = ~~Math.ceil(+length);
  return length < 0 ? 0 : length;
}

function isArray(subject) {
  return (Array.isArray ||
    function(subject){
      return {}.toString.apply(subject) == '[object Array]'
    })
    (subject)
}

function isArrayIsh(subject) {
  return isArray(subject) || Buffer.isBuffer(subject) ||
         subject && typeof subject === 'object' &&
         typeof subject.length === 'number';
}

function toHex(n) {
  if (n < 16) return '0' + n.toString(16);
  return n.toString(16);
}

function utf8ToBytes(str) {
  var byteArray = [];
  for (var i = 0; i < str.length; i++)
    if (str.charCodeAt(i) <= 0x7F)
      byteArray.push(str.charCodeAt(i));
    else {
      var h = encodeURIComponent(str.charAt(i)).substr(1).split('%');
      for (var j = 0; j < h.length; j++)
        byteArray.push(parseInt(h[j], 16));
    }

  return byteArray;
}

function asciiToBytes(str) {
  var byteArray = []
  for (var i = 0; i < str.length; i++ )
    // Node's code seems to be doing this and not & 0x7F..
    byteArray.push( str.charCodeAt(i) & 0xFF );

  return byteArray;
}

function base64ToBytes(str) {
  return require("base64-js").toByteArray(str);
}

function blitBuffer(src, dst, offset, length) {
  var pos, i = 0;
  while (i < length) {
    if ((i+offset >= dst.length) || (i >= src.length))
      break;

    dst[i + offset] = src[i];
    i++;
  }
  return i;
}

function decodeUtf8Char(str) {
  try {
    return decodeURIComponent(str);
  } catch (err) {
    return String.fromCharCode(0xFFFD); // UTF 8 invalid char
  }
}

// read/write bit-twiddling

Buffer.prototype.readUInt8 = function(offset, noAssert) {
  var buffer = this;

  if (!noAssert) {
    assert.ok(offset !== undefined && offset !== null,
        'missing offset');

    assert.ok(offset < buffer.length,
        'Trying to read beyond buffer length');
  }

  if (offset >= buffer.length) return;

  return buffer[offset];
};

function readUInt16(buffer, offset, isBigEndian, noAssert) {
  var val = 0;


  if (!noAssert) {
    assert.ok(typeof (isBigEndian) === 'boolean',
        'missing or invalid endian');

    assert.ok(offset !== undefined && offset !== null,
        'missing offset');

    assert.ok(offset + 1 < buffer.length,
        'Trying to read beyond buffer length');
  }

  if (offset >= buffer.length) return 0;

  if (isBigEndian) {
    val = buffer[offset] << 8;
    if (offset + 1 < buffer.length) {
      val |= buffer[offset + 1];
    }
  } else {
    val = buffer[offset];
    if (offset + 1 < buffer.length) {
      val |= buffer[offset + 1] << 8;
    }
  }

  return val;
}

Buffer.prototype.readUInt16LE = function(offset, noAssert) {
  return readUInt16(this, offset, false, noAssert);
};

Buffer.prototype.readUInt16BE = function(offset, noAssert) {
  return readUInt16(this, offset, true, noAssert);
};

function readUInt32(buffer, offset, isBigEndian, noAssert) {
  var val = 0;

  if (!noAssert) {
    assert.ok(typeof (isBigEndian) === 'boolean',
        'missing or invalid endian');

    assert.ok(offset !== undefined && offset !== null,
        'missing offset');

    assert.ok(offset + 3 < buffer.length,
        'Trying to read beyond buffer length');
  }

  if (offset >= buffer.length) return 0;

  if (isBigEndian) {
    if (offset + 1 < buffer.length)
      val = buffer[offset + 1] << 16;
    if (offset + 2 < buffer.length)
      val |= buffer[offset + 2] << 8;
    if (offset + 3 < buffer.length)
      val |= buffer[offset + 3];
    val = val + (buffer[offset] << 24 >>> 0);
  } else {
    if (offset + 2 < buffer.length)
      val = buffer[offset + 2] << 16;
    if (offset + 1 < buffer.length)
      val |= buffer[offset + 1] << 8;
    val |= buffer[offset];
    if (offset + 3 < buffer.length)
      val = val + (buffer[offset + 3] << 24 >>> 0);
  }

  return val;
}

Buffer.prototype.readUInt32LE = function(offset, noAssert) {
  return readUInt32(this, offset, false, noAssert);
};

Buffer.prototype.readUInt32BE = function(offset, noAssert) {
  return readUInt32(this, offset, true, noAssert);
};


/*
 * Signed integer types, yay team! A reminder on how two's complement actually
 * works. The first bit is the signed bit, i.e. tells us whether or not the
 * number should be positive or negative. If the two's complement value is
 * positive, then we're done, as it's equivalent to the unsigned representation.
 *
 * Now if the number is positive, you're pretty much done, you can just leverage
 * the unsigned translations and return those. Unfortunately, negative numbers
 * aren't quite that straightforward.
 *
 * At first glance, one might be inclined to use the traditional formula to
 * translate binary numbers between the positive and negative values in two's
 * complement. (Though it doesn't quite work for the most negative value)
 * Mainly:
 *  - invert all the bits
 *  - add one to the result
 *
 * Of course, this doesn't quite work in Javascript. Take for example the value
 * of -128. This could be represented in 16 bits (big-endian) as 0xff80. But of
 * course, Javascript will do the following:
 *
 * > ~0xff80
 * -65409
 *
 * Whoh there, Javascript, that's not quite right. But wait, according to
 * Javascript that's perfectly correct. When Javascript ends up seeing the
 * constant 0xff80, it has no notion that it is actually a signed number. It
 * assumes that we've input the unsigned value 0xff80. Thus, when it does the
 * binary negation, it casts it into a signed value, (positive 0xff80). Then
 * when you perform binary negation on that, it turns it into a negative number.
 *
 * Instead, we're going to have to use the following general formula, that works
 * in a rather Javascript friendly way. I'm glad we don't support this kind of
 * weird numbering scheme in the kernel.
 *
 * (BIT-MAX - (unsigned)val + 1) * -1
 *
 * The astute observer, may think that this doesn't make sense for 8-bit numbers
 * (really it isn't necessary for them). However, when you get 16-bit numbers,
 * you do. Let's go back to our prior example and see how this will look:
 *
 * (0xffff - 0xff80 + 1) * -1
 * (0x007f + 1) * -1
 * (0x0080) * -1
 */
Buffer.prototype.readInt8 = function(offset, noAssert) {
  var buffer = this;
  var neg;

  if (!noAssert) {
    assert.ok(offset !== undefined && offset !== null,
        'missing offset');

    assert.ok(offset < buffer.length,
        'Trying to read beyond buffer length');
  }

  if (offset >= buffer.length) return;

  neg = buffer[offset] & 0x80;
  if (!neg) {
    return (buffer[offset]);
  }

  return ((0xff - buffer[offset] + 1) * -1);
};

function readInt16(buffer, offset, isBigEndian, noAssert) {
  var neg, val;

  if (!noAssert) {
    assert.ok(typeof (isBigEndian) === 'boolean',
        'missing or invalid endian');

    assert.ok(offset !== undefined && offset !== null,
        'missing offset');

    assert.ok(offset + 1 < buffer.length,
        'Trying to read beyond buffer length');
  }

  val = readUInt16(buffer, offset, isBigEndian, noAssert);
  neg = val & 0x8000;
  if (!neg) {
    return val;
  }

  return (0xffff - val + 1) * -1;
}

Buffer.prototype.readInt16LE = function(offset, noAssert) {
  return readInt16(this, offset, false, noAssert);
};

Buffer.prototype.readInt16BE = function(offset, noAssert) {
  return readInt16(this, offset, true, noAssert);
};

function readInt32(buffer, offset, isBigEndian, noAssert) {
  var neg, val;

  if (!noAssert) {
    assert.ok(typeof (isBigEndian) === 'boolean',
        'missing or invalid endian');

    assert.ok(offset !== undefined && offset !== null,
        'missing offset');

    assert.ok(offset + 3 < buffer.length,
        'Trying to read beyond buffer length');
  }

  val = readUInt32(buffer, offset, isBigEndian, noAssert);
  neg = val & 0x80000000;
  if (!neg) {
    return (val);
  }

  return (0xffffffff - val + 1) * -1;
}

Buffer.prototype.readInt32LE = function(offset, noAssert) {
  return readInt32(this, offset, false, noAssert);
};

Buffer.prototype.readInt32BE = function(offset, noAssert) {
  return readInt32(this, offset, true, noAssert);
};

function readFloat(buffer, offset, isBigEndian, noAssert) {
  if (!noAssert) {
    assert.ok(typeof (isBigEndian) === 'boolean',
        'missing or invalid endian');

    assert.ok(offset + 3 < buffer.length,
        'Trying to read beyond buffer length');
  }

  return require('./buffer_ieee754').readIEEE754(buffer, offset, isBigEndian,
      23, 4);
}

Buffer.prototype.readFloatLE = function(offset, noAssert) {
  return readFloat(this, offset, false, noAssert);
};

Buffer.prototype.readFloatBE = function(offset, noAssert) {
  return readFloat(this, offset, true, noAssert);
};

function readDouble(buffer, offset, isBigEndian, noAssert) {
  if (!noAssert) {
    assert.ok(typeof (isBigEndian) === 'boolean',
        'missing or invalid endian');

    assert.ok(offset + 7 < buffer.length,
        'Trying to read beyond buffer length');
  }

  return require('./buffer_ieee754').readIEEE754(buffer, offset, isBigEndian,
      52, 8);
}

Buffer.prototype.readDoubleLE = function(offset, noAssert) {
  return readDouble(this, offset, false, noAssert);
};

Buffer.prototype.readDoubleBE = function(offset, noAssert) {
  return readDouble(this, offset, true, noAssert);
};


/*
 * We have to make sure that the value is a valid integer. This means that it is
 * non-negative. It has no fractional component and that it does not exceed the
 * maximum allowed value.
 *
 *      value           The number to check for validity
 *
 *      max             The maximum value
 */
function verifuint(value, max) {
  assert.ok(typeof (value) == 'number',
      'cannot write a non-number as a number');

  assert.ok(value >= 0,
      'specified a negative value for writing an unsigned value');

  assert.ok(value <= max, 'value is larger than maximum value for type');

  assert.ok(Math.floor(value) === value, 'value has a fractional component');
}

Buffer.prototype.writeUInt8 = function(value, offset, noAssert) {
  var buffer = this;

  if (!noAssert) {
    assert.ok(value !== undefined && value !== null,
        'missing value');

    assert.ok(offset !== undefined && offset !== null,
        'missing offset');

    assert.ok(offset < buffer.length,
        'trying to write beyond buffer length');

    verifuint(value, 0xff);
  }

  if (offset < buffer.length) {
    buffer[offset] = value;
  }
};

function writeUInt16(buffer, value, offset, isBigEndian, noAssert) {
  if (!noAssert) {
    assert.ok(value !== undefined && value !== null,
        'missing value');

    assert.ok(typeof (isBigEndian) === 'boolean',
        'missing or invalid endian');

    assert.ok(offset !== undefined && offset !== null,
        'missing offset');

    assert.ok(offset + 1 < buffer.length,
        'trying to write beyond buffer length');

    verifuint(value, 0xffff);
  }

  for (var i = 0; i < Math.min(buffer.length - offset, 2); i++) {
    buffer[offset + i] =
        (value & (0xff << (8 * (isBigEndian ? 1 - i : i)))) >>>
            (isBigEndian ? 1 - i : i) * 8;
  }

}

Buffer.prototype.writeUInt16LE = function(value, offset, noAssert) {
  writeUInt16(this, value, offset, false, noAssert);
};

Buffer.prototype.writeUInt16BE = function(value, offset, noAssert) {
  writeUInt16(this, value, offset, true, noAssert);
};

function writeUInt32(buffer, value, offset, isBigEndian, noAssert) {
  if (!noAssert) {
    assert.ok(value !== undefined && value !== null,
        'missing value');

    assert.ok(typeof (isBigEndian) === 'boolean',
        'missing or invalid endian');

    assert.ok(offset !== undefined && offset !== null,
        'missing offset');

    assert.ok(offset + 3 < buffer.length,
        'trying to write beyond buffer length');

    verifuint(value, 0xffffffff);
  }

  for (var i = 0; i < Math.min(buffer.length - offset, 4); i++) {
    buffer[offset + i] =
        (value >>> (isBigEndian ? 3 - i : i) * 8) & 0xff;
  }
}

Buffer.prototype.writeUInt32LE = function(value, offset, noAssert) {
  writeUInt32(this, value, offset, false, noAssert);
};

Buffer.prototype.writeUInt32BE = function(value, offset, noAssert) {
  writeUInt32(this, value, offset, true, noAssert);
};


/*
 * We now move onto our friends in the signed number category. Unlike unsigned
 * numbers, we're going to have to worry a bit more about how we put values into
 * arrays. Since we are only worrying about signed 32-bit values, we're in
 * slightly better shape. Unfortunately, we really can't do our favorite binary
 * & in this system. It really seems to do the wrong thing. For example:
 *
 * > -32 & 0xff
 * 224
 *
 * What's happening above is really: 0xe0 & 0xff = 0xe0. However, the results of
 * this aren't treated as a signed number. Ultimately a bad thing.
 *
 * What we're going to want to do is basically create the unsigned equivalent of
 * our representation and pass that off to the wuint* functions. To do that
 * we're going to do the following:
 *
 *  - if the value is positive
 *      we can pass it directly off to the equivalent wuint
 *  - if the value is negative
 *      we do the following computation:
 *         mb + val + 1, where
 *         mb   is the maximum unsigned value in that byte size
 *         val  is the Javascript negative integer
 *
 *
 * As a concrete value, take -128. In signed 16 bits this would be 0xff80. If
 * you do out the computations:
 *
 * 0xffff - 128 + 1
 * 0xffff - 127
 * 0xff80
 *
 * You can then encode this value as the signed version. This is really rather
 * hacky, but it should work and get the job done which is our goal here.
 */

/*
 * A series of checks to make sure we actually have a signed 32-bit number
 */
function verifsint(value, max, min) {
  assert.ok(typeof (value) == 'number',
      'cannot write a non-number as a number');

  assert.ok(value <= max, 'value larger than maximum allowed value');

  assert.ok(value >= min, 'value smaller than minimum allowed value');

  assert.ok(Math.floor(value) === value, 'value has a fractional component');
}

function verifIEEE754(value, max, min) {
  assert.ok(typeof (value) == 'number',
      'cannot write a non-number as a number');

  assert.ok(value <= max, 'value larger than maximum allowed value');

  assert.ok(value >= min, 'value smaller than minimum allowed value');
}

Buffer.prototype.writeInt8 = function(value, offset, noAssert) {
  var buffer = this;

  if (!noAssert) {
    assert.ok(value !== undefined && value !== null,
        'missing value');

    assert.ok(offset !== undefined && offset !== null,
        'missing offset');

    assert.ok(offset < buffer.length,
        'Trying to write beyond buffer length');

    verifsint(value, 0x7f, -0x80);
  }

  if (value >= 0) {
    buffer.writeUInt8(value, offset, noAssert);
  } else {
    buffer.writeUInt8(0xff + value + 1, offset, noAssert);
  }
};

function writeInt16(buffer, value, offset, isBigEndian, noAssert) {
  if (!noAssert) {
    assert.ok(value !== undefined && value !== null,
        'missing value');

    assert.ok(typeof (isBigEndian) === 'boolean',
        'missing or invalid endian');

    assert.ok(offset !== undefined && offset !== null,
        'missing offset');

    assert.ok(offset + 1 < buffer.length,
        'Trying to write beyond buffer length');

    verifsint(value, 0x7fff, -0x8000);
  }

  if (value >= 0) {
    writeUInt16(buffer, value, offset, isBigEndian, noAssert);
  } else {
    writeUInt16(buffer, 0xffff + value + 1, offset, isBigEndian, noAssert);
  }
}

Buffer.prototype.writeInt16LE = function(value, offset, noAssert) {
  writeInt16(this, value, offset, false, noAssert);
};

Buffer.prototype.writeInt16BE = function(value, offset, noAssert) {
  writeInt16(this, value, offset, true, noAssert);
};

function writeInt32(buffer, value, offset, isBigEndian, noAssert) {
  if (!noAssert) {
    assert.ok(value !== undefined && value !== null,
        'missing value');

    assert.ok(typeof (isBigEndian) === 'boolean',
        'missing or invalid endian');

    assert.ok(offset !== undefined && offset !== null,
        'missing offset');

    assert.ok(offset + 3 < buffer.length,
        'Trying to write beyond buffer length');

    verifsint(value, 0x7fffffff, -0x80000000);
  }

  if (value >= 0) {
    writeUInt32(buffer, value, offset, isBigEndian, noAssert);
  } else {
    writeUInt32(buffer, 0xffffffff + value + 1, offset, isBigEndian, noAssert);
  }
}

Buffer.prototype.writeInt32LE = function(value, offset, noAssert) {
  writeInt32(this, value, offset, false, noAssert);
};

Buffer.prototype.writeInt32BE = function(value, offset, noAssert) {
  writeInt32(this, value, offset, true, noAssert);
};

function writeFloat(buffer, value, offset, isBigEndian, noAssert) {
  if (!noAssert) {
    assert.ok(value !== undefined && value !== null,
        'missing value');

    assert.ok(typeof (isBigEndian) === 'boolean',
        'missing or invalid endian');

    assert.ok(offset !== undefined && offset !== null,
        'missing offset');

    assert.ok(offset + 3 < buffer.length,
        'Trying to write beyond buffer length');

    verifIEEE754(value, 3.4028234663852886e+38, -3.4028234663852886e+38);
  }

  require('./buffer_ieee754').writeIEEE754(buffer, value, offset, isBigEndian,
      23, 4);
}

Buffer.prototype.writeFloatLE = function(value, offset, noAssert) {
  writeFloat(this, value, offset, false, noAssert);
};

Buffer.prototype.writeFloatBE = function(value, offset, noAssert) {
  writeFloat(this, value, offset, true, noAssert);
};

function writeDouble(buffer, value, offset, isBigEndian, noAssert) {
  if (!noAssert) {
    assert.ok(value !== undefined && value !== null,
        'missing value');

    assert.ok(typeof (isBigEndian) === 'boolean',
        'missing or invalid endian');

    assert.ok(offset !== undefined && offset !== null,
        'missing offset');

    assert.ok(offset + 7 < buffer.length,
        'Trying to write beyond buffer length');

    verifIEEE754(value, 1.7976931348623157E+308, -1.7976931348623157E+308);
  }

  require('./buffer_ieee754').writeIEEE754(buffer, value, offset, isBigEndian,
      52, 8);
}

Buffer.prototype.writeDoubleLE = function(value, offset, noAssert) {
  writeDouble(this, value, offset, false, noAssert);
};

Buffer.prototype.writeDoubleBE = function(value, offset, noAssert) {
  writeDouble(this, value, offset, true, noAssert);
};

},{"./buffer_ieee754":15,"assert":9,"base64-js":17}],17:[function(require,module,exports){
(function (exports) {
	'use strict';

	var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';

	function b64ToByteArray(b64) {
		var i, j, l, tmp, placeHolders, arr;
	
		if (b64.length % 4 > 0) {
			throw 'Invalid string. Length must be a multiple of 4';
		}

		// the number of equal signs (place holders)
		// if there are two placeholders, than the two characters before it
		// represent one byte
		// if there is only one, then the three characters before it represent 2 bytes
		// this is just a cheap hack to not do indexOf twice
		placeHolders = b64.indexOf('=');
		placeHolders = placeHolders > 0 ? b64.length - placeHolders : 0;

		// base64 is 4/3 + up to two characters of the original data
		arr = [];//new Uint8Array(b64.length * 3 / 4 - placeHolders);

		// if there are placeholders, only get up to the last complete 4 chars
		l = placeHolders > 0 ? b64.length - 4 : b64.length;

		for (i = 0, j = 0; i < l; i += 4, j += 3) {
			tmp = (lookup.indexOf(b64[i]) << 18) | (lookup.indexOf(b64[i + 1]) << 12) | (lookup.indexOf(b64[i + 2]) << 6) | lookup.indexOf(b64[i + 3]);
			arr.push((tmp & 0xFF0000) >> 16);
			arr.push((tmp & 0xFF00) >> 8);
			arr.push(tmp & 0xFF);
		}

		if (placeHolders === 2) {
			tmp = (lookup.indexOf(b64[i]) << 2) | (lookup.indexOf(b64[i + 1]) >> 4);
			arr.push(tmp & 0xFF);
		} else if (placeHolders === 1) {
			tmp = (lookup.indexOf(b64[i]) << 10) | (lookup.indexOf(b64[i + 1]) << 4) | (lookup.indexOf(b64[i + 2]) >> 2);
			arr.push((tmp >> 8) & 0xFF);
			arr.push(tmp & 0xFF);
		}

		return arr;
	}

	function uint8ToBase64(uint8) {
		var i,
			extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes
			output = "",
			temp, length;

		function tripletToBase64 (num) {
			return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F];
		};

		// go through the array every three bytes, we'll deal with trailing stuff later
		for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) {
			temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2]);
			output += tripletToBase64(temp);
		}

		// pad the end with zeros, but make sure to not forget the extra bytes
		switch (extraBytes) {
			case 1:
				temp = uint8[uint8.length - 1];
				output += lookup[temp >> 2];
				output += lookup[(temp << 4) & 0x3F];
				output += '==';
				break;
			case 2:
				temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1]);
				output += lookup[temp >> 10];
				output += lookup[(temp >> 4) & 0x3F];
				output += lookup[(temp << 2) & 0x3F];
				output += '=';
				break;
		}

		return output;
	}

	module.exports.toByteArray = b64ToByteArray;
	module.exports.fromByteArray = uint8ToBase64;
}());

},{}],18:[function(require,module,exports){
// shim for using process in browser

var process = module.exports = {};

process.nextTick = (function () {
    var canSetImmediate = typeof window !== 'undefined'
    && window.setImmediate;
    var canPost = typeof window !== 'undefined'
    && window.postMessage && window.addEventListener
    ;

    if (canSetImmediate) {
        return function (f) { return window.setImmediate(f) };
    }

    if (canPost) {
        var queue = [];
        window.addEventListener('message', function (ev) {
            if (ev.source === window && ev.data === 'process-tick') {
                ev.stopPropagation();
                if (queue.length > 0) {
                    var fn = queue.shift();
                    fn();
                }
            }
        }, true);

        return function nextTick(fn) {
            queue.push(fn);
            window.postMessage('process-tick', '*');
        };
    }

    return function nextTick(fn) {
        setTimeout(fn, 0);
    };
})();

process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];

process.binding = function (name) {
    throw new Error('process.binding is not supported');
}

// TODO(shtylman)
process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};

},{}],19:[function(require,module,exports){

module.exports = require('./lib/debug');
},{"./lib/debug":20}],20:[function(require,module,exports){
var process=require("__browserify_process");
/*!
 * debug
 * Copyright(c) 2012 TJ Holowaychuk <tj@vision-media.ca>
 * MIT Licensed
 */

/**
 * Module dependencies.
 */

var tty = require('tty');

/**
 * Expose `debug()` as the module.
 */

module.exports = debug;

/**
 * Library version.
 */

exports.version = '0.6.0';

/**
 * Enabled debuggers.
 */

var names = []
  , skips = [];

(process.env.DEBUG || '')
  .split(/[\s,]+/)
  .forEach(function(name){
    name = name.replace('*', '.*?');
    if (name[0] === '-') {
      skips.push(new RegExp('^' + name.substr(1) + '$'));
    } else {
      names.push(new RegExp('^' + name + '$'));
    }
  });

/**
 * Colors.
 */

var colors = [6, 2, 3, 4, 5, 1];

/**
 * Previous debug() call.
 */

var prev = {};

/**
 * Previously assigned color.
 */

var prevColor = 0;

/**
 * Is stdout a TTY? Colored output is disabled when `true`.
 */

var isatty = tty.isatty(2);

/**
 * Select a color.
 *
 * @return {Number}
 * @api private
 */

function color() {
  return colors[prevColor++ % colors.length];
}

/**
 * Humanize the given `ms`.
 *
 * @param {Number} m
 * @return {String}
 * @api private
 */

function humanize(ms) {
  var sec = 1000
    , min = 60 * 1000
    , hour = 60 * min;

  if (ms >= hour) return (ms / hour).toFixed(1) + 'h';
  if (ms >= min) return (ms / min).toFixed(1) + 'm';
  if (ms >= sec) return (ms / sec | 0) + 's';
  return ms + 'ms';
}

/**
 * Create a debugger with the given `name`.
 *
 * @param {String} name
 * @return {Type}
 * @api public
 */

function debug(name) {
  function disabled(){}
  disabled.enabled = false;

  var match = skips.some(function(re){
    return re.test(name);
  });

  if (match) return disabled;

  match = names.some(function(re){
    return re.test(name);
  });

  if (!match) return disabled;
  var c = color();

  function colored(fmt) {
    var curr = new Date;
    var ms = curr - (prev[name] || curr);
    prev[name] = curr;

    fmt = '  \033[9' + c + 'm' + name + ' '
      + '\033[3' + c + 'm\033[90m'
      + fmt + '\033[3' + c + 'm'
      + ' +' + humanize(ms) + '\033[0m';

    console.error.apply(this, arguments);
  }

  function plain(fmt) {
    fmt = new Date().toUTCString()
      + ' ' + name + ' ' + fmt;
    console.error.apply(this, arguments);
  }

  colored.enabled = plain.enabled = true;

  return isatty
    ? colored
    : plain;
}

},{"__browserify_process":18,"tty":12}],21:[function(require,module,exports){

/**
 * Module dependencies.
 */

var index = require('indexof');

/**
 * Expose `Emitter`.
 */

module.exports = Emitter;

/**
 * Initialize a new `Emitter`.
 *
 * @api public
 */

function Emitter(obj) {
  if (obj) return mixin(obj);
};

/**
 * Mixin the emitter properties.
 *
 * @param {Object} obj
 * @return {Object}
 * @api private
 */

function mixin(obj) {
  for (var key in Emitter.prototype) {
    obj[key] = Emitter.prototype[key];
  }
  return obj;
}

/**
 * Listen on the given `event` with `fn`.
 *
 * @param {String} event
 * @param {Function} fn
 * @return {Emitter}
 * @api public
 */

Emitter.prototype.on = function(event, fn){
  this._callbacks = this._callbacks || {};
  (this._callbacks[event] = this._callbacks[event] || [])
    .push(fn);
  return this;
};

/**
 * Adds an `event` listener that will be invoked a single
 * time then automatically removed.
 *
 * @param {String} event
 * @param {Function} fn
 * @return {Emitter}
 * @api public
 */

Emitter.prototype.once = function(event, fn){
  var self = this;
  this._callbacks = this._callbacks || {};

  function on() {
    self.off(event, on);
    fn.apply(this, arguments);
  }

  fn._off = on;
  this.on(event, on);
  return this;
};

/**
 * Remove the given callback for `event` or all
 * registered callbacks.
 *
 * @param {String} event
 * @param {Function} fn
 * @return {Emitter}
 * @api public
 */

Emitter.prototype.off =
Emitter.prototype.removeListener =
Emitter.prototype.removeAllListeners = function(event, fn){
  this._callbacks = this._callbacks || {};

  // all
  if (0 == arguments.length) {
    this._callbacks = {};
    return this;
  }

  // specific event
  var callbacks = this._callbacks[event];
  if (!callbacks) return this;

  // remove all handlers
  if (1 == arguments.length) {
    delete this._callbacks[event];
    return this;
  }

  // remove specific handler
  var i = index(callbacks, fn._off || fn);
  if (~i) callbacks.splice(i, 1);
  return this;
};

/**
 * Emit `event` with the given args.
 *
 * @param {String} event
 * @param {Mixed} ...
 * @return {Emitter}
 */

Emitter.prototype.emit = function(event){
  this._callbacks = this._callbacks || {};
  var args = [].slice.call(arguments, 1)
    , callbacks = this._callbacks[event];

  if (callbacks) {
    callbacks = callbacks.slice(0);
    for (var i = 0, len = callbacks.length; i < len; ++i) {
      callbacks[i].apply(this, args);
    }
  }

  return this;
};

/**
 * Return array of callbacks for `event`.
 *
 * @param {String} event
 * @return {Array}
 * @api public
 */

Emitter.prototype.listeners = function(event){
  this._callbacks = this._callbacks || {};
  return this._callbacks[event] || [];
};

/**
 * Check if this emitter has `event` handlers.
 *
 * @param {String} event
 * @return {Boolean}
 * @api public
 */

Emitter.prototype.hasListeners = function(event){
  return !! this.listeners(event).length;
};

},{"indexof":22}],22:[function(require,module,exports){

var indexOf = [].indexOf;

module.exports = function(arr, obj){
  if (indexOf) return arr.indexOf(obj);
  for (var i = 0; i < arr.length; ++i) {
    if (arr[i] === obj) return i;
  }
  return -1;
};
},{}],23:[function(require,module,exports){

module.exports =  require('./lib/');

},{"./lib/":25}],24:[function(require,module,exports){

/**
 * Module dependencies.
 */

var Emitter = require('emitter');

/**
 * Module exports.
 */

module.exports = Emitter;

/**
 * Compatibility with `WebSocket#addEventListener`.
 *
 * @api public
 */

Emitter.prototype.addEventListener = Emitter.prototype.on;

/**
 * Compatibility with `WebSocket#removeEventListener`.
 *
 * @api public
 */

Emitter.prototype.removeEventListener = Emitter.prototype.off;

/**
 * Node-compatible `EventEmitter#removeListener`
 *
 * @api public
 */

Emitter.prototype.removeListener = Emitter.prototype.off;

},{"emitter":21}],25:[function(require,module,exports){

module.exports = require('./socket');

/**
 * Exports parser
 *
 * @api public
 *
 */
module.exports.parser = require('engine.io-parser');

},{"./socket":26,"engine.io-parser":37}],26:[function(require,module,exports){
/**
 * Module dependencies.
 */

var util = require('./util')
  , transports = require('./transports')
  , Emitter = require('./emitter')
  , debug = require('debug')('engine.io-client:socket')
  , index = require('indexof')
  , parser = require('engine.io-parser');

/**
 * Module exports.
 */

module.exports = Socket;

/**
 * Global reference.
 */

var global = require('global');

/**
 * Noop function.
 *
 * @api private
 */

function noop () {};

/**
 * Socket constructor.
 *
 * @param {String|Object} uri or options
 * @param {Object} options
 * @api public
 */

function Socket(uri, opts){
  if (!(this instanceof Socket)) return new Socket(uri, opts);

  opts = opts || {};

  if ('object' == typeof uri) {
    opts = uri;
    uri = null;
  }

  if (uri) {
    uri = util.parseUri(uri);
    opts.host = uri.host;
    opts.secure = uri.protocol == 'https' || uri.protocol == 'wss';
    opts.port = uri.port;
    if (uri.query) opts.query = uri.query;
  }

  this.secure = null != opts.secure ? opts.secure :
    (global.location && 'https:' == location.protocol);

  if (opts.host) {
    var pieces = opts.host.split(':');
    opts.hostname = pieces.shift();
    if (pieces.length) opts.port = pieces.pop();
  }

  this.agent = opts.agent || false;
  this.hostname = opts.hostname ||
    (global.location ? location.hostname : 'localhost');
  this.port = opts.port || (global.location && location.port ?
       location.port :
       (this.secure ? 443 : 80));
  this.query = opts.query || {};
  if ('string' == typeof this.query) this.query = util.qsParse(this.query);
  this.upgrade = false !== opts.upgrade;
  this.path = (opts.path || '/engine.io').replace(/\/$/, '') + '/';
  this.forceJSONP = !!opts.forceJSONP;
  this.timestampParam = opts.timestampParam || 't';
  this.timestampRequests = !!opts.timestampRequests;
  this.flashPath = opts.flashPath || '';
  this.transports = opts.transports || ['polling', 'websocket', 'flashsocket'];
  this.readyState = '';
  this.writeBuffer = [];
  this.callbackBuffer = [];
  this.policyPort = opts.policyPort || 843;
  this.open();

  Socket.sockets.push(this);
  Socket.sockets.evs.emit('add', this);
};

/**
 * Mix in `Emitter`.
 */

Emitter(Socket.prototype);

/**
 * Protocol version.
 *
 * @api public
 */

Socket.protocol = parser.protocol; // this is an int

/**
 * Static EventEmitter.
 */

Socket.sockets = [];
Socket.sockets.evs = new Emitter;

/**
 * Expose deps for legacy compatibility
 * and standalone browser access.
 */

Socket.Socket = Socket;
Socket.Transport = require('./transport');
Socket.Emitter = require('./emitter');
Socket.transports = require('./transports');
Socket.util = require('./util');
Socket.parser = require('engine.io-parser');

/**
 * Creates transport of the given type.
 *
 * @param {String} transport name
 * @return {Transport}
 * @api private
 */

Socket.prototype.createTransport = function (name) {
  debug('creating transport "%s"', name);
  var query = clone(this.query);

  // append engine.io protocol identifier
  query.EIO = parser.protocol;

  // transport name
  query.transport = name;

  // session id if we already have one
  if (this.id) query.sid = this.id;

  var transport = new transports[name]({
    agent: this.agent,
    hostname: this.hostname,
    port: this.port,
    secure: this.secure,
    path: this.path,
    query: query,
    forceJSONP: this.forceJSONP,
    timestampRequests: this.timestampRequests,
    timestampParam: this.timestampParam,
    flashPath: this.flashPath,
    policyPort: this.policyPort
  });

  return transport;
};

function clone (obj) {
  var o = {};
  for (var i in obj) {
    if (obj.hasOwnProperty(i)) {
      o[i] = obj[i];
    }
  }
  return o;
}

/**
 * Initializes transport to use and starts probe.
 *
 * @api private
 */

Socket.prototype.open = function () {
  this.readyState = 'opening';
  var transport = this.createTransport(this.transports[0]);
  transport.open();
  this.setTransport(transport);
};

/**
 * Sets the current transport. Disables the existing one (if any).
 *
 * @api private
 */

Socket.prototype.setTransport = function (transport) {
  var self = this;

  if (this.transport) {
    debug('clearing existing transport');
    this.transport.removeAllListeners();
  }

  // set up transport
  this.transport = transport;

  // set up transport listeners
  transport
    .on('drain', function () {
      self.onDrain();
    })
    .on('packet', function (packet) {
      self.onPacket(packet);
    })
    .on('error', function (e) {
      self.onError(e);
    })
    .on('close', function () {
      self.onClose('transport close');
    });
};

/**
 * Probes a transport.
 *
 * @param {String} transport name
 * @api private
 */

Socket.prototype.probe = function (name) {
  debug('probing transport "%s"', name);
  var transport = this.createTransport(name, { probe: 1 })
    , failed = false
    , self = this;

  transport.once('open', function () {
    if (failed) return;

    debug('probe transport "%s" opened', name);
    transport.send([{ type: 'ping', data: 'probe' }]);
    transport.once('packet', function (msg) {
      if (failed) return;
      if ('pong' == msg.type && 'probe' == msg.data) {
        debug('probe transport "%s" pong', name);
        self.upgrading = true;
        self.emit('upgrading', transport);

        debug('pausing current transport "%s"', self.transport.name);
        self.transport.pause(function () {
          if (failed) return;
          if ('closed' == self.readyState || 'closing' == self.readyState) {
            return;
          }
          debug('changing transport and sending upgrade packet');
          transport.removeListener('error', onerror);
          self.emit('upgrade', transport);
          self.setTransport(transport);
          transport.send([{ type: 'upgrade' }]);
          transport = null;
          self.upgrading = false;
          self.flush();
        });
      } else {
        debug('probe transport "%s" failed', name);
        var err = new Error('probe error');
        err.transport = transport.name;
        self.emit('error', err);
      }
    });
  });

  transport.once('error', onerror);
  function onerror(err) {
    if (failed) return;

    // Any callback called by transport should be ignored since now
    failed = true;

    var error = new Error('probe error: ' + err);
    error.transport = transport.name;

    transport.close();
    transport = null;

    debug('probe transport "%s" failed because of error: %s', name, err);

    self.emit('error', error);
  };

  transport.open();

  this.once('close', function () {
    if (transport) {
      debug('socket closed prematurely - aborting probe');
      failed = true;
      transport.close();
      transport = null;
    }
  });

  this.once('upgrading', function (to) {
    if (transport && to.name != transport.name) {
      debug('"%s" works - aborting "%s"', to.name, transport.name);
      transport.close();
      transport = null;
    }
  });
};

/**
 * Called when connection is deemed open.
 *
 * @api public
 */

Socket.prototype.onOpen = function () {
  debug('socket open');
  this.readyState = 'open';
  this.emit('open');
  this.onopen && this.onopen.call(this);
  this.flush();

  // we check for `readyState` in case an `open`
  // listener alreay closed the socket
  if ('open' == this.readyState && this.upgrade && this.transport.pause) {
    debug('starting upgrade probes');
    for (var i = 0, l = this.upgrades.length; i < l; i++) {
      this.probe(this.upgrades[i]);
    }
  }
};

/**
 * Handles a packet.
 *
 * @api private
 */

Socket.prototype.onPacket = function (packet) {
  if ('opening' == this.readyState || 'open' == this.readyState) {
    debug('socket receive: type "%s", data "%s"', packet.type, packet.data);

    this.emit('packet', packet);

    // Socket is live - any packet counts
    this.emit('heartbeat');

    switch (packet.type) {
      case 'open':
        this.onHandshake(util.parseJSON(packet.data));
        break;

      case 'pong':
        this.setPing();
        break;

      case 'error':
        var err = new Error('server error');
        err.code = packet.data;
        this.emit('error', err);
        break;

      case 'message':
        this.emit('data', packet.data);
        this.emit('message', packet.data);
        var event = { data: packet.data };
        event.toString = function () {
          return packet.data;
        };
        this.onmessage && this.onmessage.call(this, event);
        break;
    }
  } else {
    debug('packet received with socket readyState "%s"', this.readyState);
  }
};

/**
 * Called upon handshake completion.
 *
 * @param {Object} handshake obj
 * @api private
 */

Socket.prototype.onHandshake = function (data) {
  this.emit('handshake', data);
  this.id = data.sid;
  this.transport.query.sid = data.sid;
  this.upgrades = this.filterUpgrades(data.upgrades);
  this.pingInterval = data.pingInterval;
  this.pingTimeout = data.pingTimeout;
  this.onOpen();
  this.setPing();

  // Prolong liveness of socket on heartbeat
  this.removeListener('heartbeat', this.onHeartbeat);
  this.on('heartbeat', this.onHeartbeat);
};

/**
 * Resets ping timeout.
 *
 * @api private
 */

Socket.prototype.onHeartbeat = function (timeout) {
  clearTimeout(this.pingTimeoutTimer);
  var self = this;
  self.pingTimeoutTimer = setTimeout(function () {
    if ('closed' == self.readyState) return;
    self.onClose('ping timeout');
  }, timeout || (self.pingInterval + self.pingTimeout));
};

/**
 * Pings server every `this.pingInterval` and expects response
 * within `this.pingTimeout` or closes connection.
 *
 * @api private
 */

Socket.prototype.setPing = function () {
  var self = this;
  clearTimeout(self.pingIntervalTimer);
  self.pingIntervalTimer = setTimeout(function () {
    debug('writing ping packet - expecting pong within %sms', self.pingTimeout);
    self.ping();
    self.onHeartbeat(self.pingTimeout);
  }, self.pingInterval);
};

/**
* Sends a ping packet.
*
* @api public
*/

Socket.prototype.ping = function () {
  this.sendPacket('ping');
};

/**
 * Called on `drain` event
 *
 * @api private
 */

 Socket.prototype.onDrain = function() {
  for (var i = 0; i < this.prevBufferLen; i++) {
    if (this.callbackBuffer[i]) {
      this.callbackBuffer[i]();
    }
  }

  this.writeBuffer.splice(0, this.prevBufferLen);
  this.callbackBuffer.splice(0, this.prevBufferLen);

  // setting prevBufferLen = 0 is very important
  // for example, when upgrading, upgrade packet is sent over,
  // and a nonzero prevBufferLen could cause problems on `drain`
  this.prevBufferLen = 0;

  if (this.writeBuffer.length == 0) {
    this.emit('drain');
  } else {
    this.flush();
  }
};

/**
 * Flush write buffers.
 *
 * @api private
 */

Socket.prototype.flush = function () {
  if ('closed' != this.readyState && this.transport.writable &&
    !this.upgrading && this.writeBuffer.length) {
    debug('flushing %d packets in socket', this.writeBuffer.length);
    this.transport.send(this.writeBuffer);
    // keep track of current length of writeBuffer
    // splice writeBuffer and callbackBuffer on `drain`
    this.prevBufferLen = this.writeBuffer.length;
    this.emit('flush');
  }
};

/**
 * Sends a message.
 *
 * @param {String} message.
 * @param {Function} callback function.
 * @return {Socket} for chaining.
 * @api public
 */

Socket.prototype.write =
Socket.prototype.send = function (msg, fn) {
  this.sendPacket('message', msg, fn);
  return this;
};

/**
 * Sends a packet.
 *
 * @param {String} packet type.
 * @param {String} data.
 * @param {Function} callback function.
 * @api private
 */

Socket.prototype.sendPacket = function (type, data, fn) {
  var packet = { type: type, data: data };
  this.emit('packetCreate', packet);
  this.writeBuffer.push(packet);
  this.callbackBuffer.push(fn);
  this.flush();
};

/**
 * Closes the connection.
 *
 * @api private
 */

Socket.prototype.close = function () {
  if ('opening' == this.readyState || 'open' == this.readyState) {
    this.onClose('forced close');
    debug('socket closing - telling transport to close');
    this.transport.close();
  }

  return this;
};

/**
 * Called upon transport error
 *
 * @api private
 */

Socket.prototype.onError = function (err) {
  debug('socket error %j', err);
  this.emit('error', err);
  this.onerror && this.onerror.call(this, err);
  this.onClose('transport error', err);
};

/**
 * Called upon transport close.
 *
 * @api private
 */

Socket.prototype.onClose = function (reason, desc) {
  if ('opening' == this.readyState || 'open' == this.readyState) {
    debug('socket close with reason: "%s"', reason);
    var self = this;

    // clear timers
    clearTimeout(this.pingIntervalTimer);
    clearTimeout(this.pingTimeoutTimer);

    // clean buffers in next tick, so developers can still
    // grab the buffers on `close` event
    setTimeout(function() {
      self.writeBuffer = [];
      self.callbackBuffer = [];
      self.prevBufferLen = 0;
    }, 0);

    // ignore further transport communication
    this.transport.removeAllListeners();

    // set ready state
    var prev = this.readyState;
    this.readyState = 'closed';

    // clear session id
    this.id = null;

    // emit events
    if (prev == 'open') {
      this.emit('close', reason, desc);
      this.onclose && this.onclose.call(this);
    }
  }
};

/**
 * Filters upgrades, returning only those matching client transports.
 *
 * @param {Array} server upgrades
 * @api private
 *
 */

Socket.prototype.filterUpgrades = function (upgrades) {
  var filteredUpgrades = [];
  for (var i = 0, j = upgrades.length; i<j; i++) {
    if (~index(this.transports, upgrades[i])) filteredUpgrades.push(upgrades[i]);
  }
  return filteredUpgrades;
};

},{"./emitter":24,"./transport":27,"./transports":29,"./util":34,"debug":36,"engine.io-parser":37,"global":40,"indexof":42}],27:[function(require,module,exports){

/**
 * Module dependencies.
 */

var util = require('./util')
  , parser = require('engine.io-parser')
  , Emitter = require('./emitter');

/**
 * Module exports.
 */

module.exports = Transport;

/**
 * Transport abstract constructor.
 *
 * @param {Object} options.
 * @api private
 */

function Transport (opts) {
  this.path = opts.path;
  this.hostname = opts.hostname;
  this.port = opts.port;
  this.secure = opts.secure;
  this.query = opts.query;
  this.timestampParam = opts.timestampParam;
  this.timestampRequests = opts.timestampRequests;
  this.readyState = '';
  this.agent = opts.agent || false;
};

/**
 * Mix in `Emitter`.
 */

Emitter(Transport.prototype);

/**
 * Emits an error.
 *
 * @param {String} str
 * @return {Transport} for chaining
 * @api public
 */

Transport.prototype.onError = function (msg, desc) {
  var err = new Error(msg);
  err.type = 'TransportError';
  err.description = desc;
  this.emit('error', err);
  return this;
};

/**
 * Opens the transport.
 *
 * @api public
 */

Transport.prototype.open = function () {
  if ('closed' == this.readyState || '' == this.readyState) {
    this.readyState = 'opening';
    this.doOpen();
  }

  return this;
};

/**
 * Closes the transport.
 *
 * @api private
 */

Transport.prototype.close = function () {
  if ('opening' == this.readyState || 'open' == this.readyState) {
    this.doClose();
    this.onClose();
  }

  return this;
};

/**
 * Sends multiple packets.
 *
 * @param {Array} packets
 * @api private
 */

Transport.prototype.send = function(packets){
  if ('open' == this.readyState) {
    this.write(packets);
  } else {
    throw new Error('Transport not open');
  }
};

/**
 * Called upon open
 *
 * @api private
 */

Transport.prototype.onOpen = function () {
  this.readyState = 'open';
  this.writable = true;
  this.emit('open');
};

/**
 * Called with data.
 *
 * @param {String} data
 * @api private
 */

Transport.prototype.onData = function (data) {
  this.onPacket(parser.decodePacket(data));
};

/**
 * Called with a decoded packet.
 */

Transport.prototype.onPacket = function (packet) {
  this.emit('packet', packet);
};

/**
 * Called upon close.
 *
 * @api private
 */

Transport.prototype.onClose = function () {
  this.readyState = 'closed';
  this.emit('close');
};

},{"./emitter":24,"./util":34,"engine.io-parser":37}],28:[function(require,module,exports){
/**
 * Module dependencies.
 */

var WS = require('./websocket')
  , util = require('../util')
  , debug = require('debug')('engine.io-client:flashsocket');

/**
 * Module exports.
 */

module.exports = FlashWS;

/**
 * Global reference.
 */

var global = require('global');

/**
 * Obfuscated key for Blue Coat.
 */

var xobject = global[['Active'].concat('Object').join('X')];

/**
 * FlashWS constructor.
 *
 * @api public
 */

function FlashWS (options) {
  WS.call(this, options);
  this.flashPath = options.flashPath;
  this.policyPort = options.policyPort;
};

/**
 * Inherits from WebSocket.
 */

util.inherits(FlashWS, WS);

/**
 * Transport name.
 *
 * @api public
 */

FlashWS.prototype.name = 'flashsocket';

/**
 * Opens the transport.
 *
 * @api public
 */

FlashWS.prototype.doOpen = function () {
  if (!this.check()) {
    // let the probe timeout
    return;
  }

  // instrument websocketjs logging
  function log (type) {
    return function(){
      var str = Array.prototype.join.call(arguments, ' ');
      debug('[websocketjs %s] %s', type, str);
    };
  };

  WEB_SOCKET_LOGGER = { log: log('debug'), error: log('error') };
  WEB_SOCKET_SUPPRESS_CROSS_DOMAIN_SWF_ERROR = true;
  WEB_SOCKET_DISABLE_AUTO_INITIALIZATION = true;

  if ('undefined' == typeof WEB_SOCKET_SWF_LOCATION) {
    WEB_SOCKET_SWF_LOCATION = this.flashPath + 'WebSocketMainInsecure.swf';
  }

  // dependencies
  var deps = [this.flashPath + 'web_socket.js'];

  if ('undefined' == typeof swfobject) {
    deps.unshift(this.flashPath + 'swfobject.js');
  }

  var self = this;

  load(deps, function () {
    self.ready(function () {
      WebSocket.__addTask(function () {
        self.socket = new WebSocket(self.uri());
        self.addEventListeners();
      });
    });
  });
};

/**
 * Override to prevent closing uninitialized flashsocket.
 *
 * @api private
 */

FlashWS.prototype.doClose = function () {
  if (!this.socket) return;
  var self = this;
  WebSocket.__addTask(function() {
    WS.prototype.doClose.call(self);
  });
};

/**
 * Writes to the Flash socket.
 *
 * @api private
 */

FlashWS.prototype.write = function() {
  var self = this, args = arguments;
  WebSocket.__addTask(function () {
    WS.prototype.write.apply(self, args);
  });
};

/**
 * Called upon dependencies are loaded.
 *
 * @api private
 */

FlashWS.prototype.ready = function (fn) {
  if (typeof WebSocket == 'undefined' ||
    !('__initialize' in WebSocket) || !swfobject) {
    return;
  }

  if (swfobject.getFlashPlayerVersion().major < 10) {
    return;
  }

  function init () {
    // Only start downloading the swf file when the checked that this browser
    // actually supports it
    if (!FlashWS.loaded) {
      if (843 != self.policyPort) {
        WebSocket.loadFlashPolicyFile('xmlsocket://' + self.hostname + ':' + self.policyPort);
      }

      WebSocket.__initialize();
      FlashWS.loaded = true;
    }

    fn.call(self);
  }

  var self = this;
  if (document.body) {
    return init();
  }

  util.load(init);
};

/**
 * Feature detection for flashsocket.
 *
 * @return {Boolean} whether this transport is available.
 * @api public
 */

FlashWS.prototype.check = function () {
  if ('undefined' == typeof window) {
    return false;
  }

  if (typeof WebSocket != 'undefined' && !('__initialize' in WebSocket)) {
    return false;
  }

  if (xobject) {
    var control = null;
    try {
      control = new xobject('ShockwaveFlash.ShockwaveFlash');
    } catch (e) { }
    if (control) {
      return true;
    }
  } else {
    for (var i = 0, l = navigator.plugins.length; i < l; i++) {
      for (var j = 0, m = navigator.plugins[i].length; j < m; j++) {
        if (navigator.plugins[i][j].description == 'Shockwave Flash') {
          return true;
        }
      }
    }
  }

  return false;
};

/**
 * Lazy loading of scripts.
 * Based on $script by Dustin Diaz - MIT
 */

var scripts = {};

/**
 * Injects a script. Keeps tracked of injected ones.
 *
 * @param {String} path
 * @param {Function} callback
 * @api private
 */

function create (path, fn) {
  if (scripts[path]) return fn();

  var el = document.createElement('script');
  var loaded = false;

  debug('loading "%s"', path);
  el.onload = el.onreadystatechange = function () {
    if (loaded || scripts[path]) return;
    var rs = el.readyState;
    if (!rs || 'loaded' == rs || 'complete' == rs) {
      debug('loaded "%s"', path);
      el.onload = el.onreadystatechange = null;
      loaded = true;
      scripts[path] = true;
      fn();
    }
  };

  el.async = 1;
  el.src = path;

  var head = document.getElementsByTagName('head')[0];
  head.insertBefore(el, head.firstChild);
};

/**
 * Loads scripts and fires a callback.
 *
 * @param {Array} paths
 * @param {Function} callback
 */

function load (arr, fn) {
  function process (i) {
    if (!arr[i]) return fn();
    create(arr[i], function () {
      process(++i);
    });
  };

  process(0);
};

},{"../util":34,"./websocket":33,"debug":36,"global":40}],29:[function(require,module,exports){

/**
 * Module dependencies
 */

var XHR = require('./polling-xhr')
  , JSONP = require('./polling-jsonp')
  , websocket = require('./websocket')
  , flashsocket = require('./flashsocket')
  , util = require('../util');

/**
 * Export transports.
 */

exports.polling = polling;
exports.websocket = websocket;
exports.flashsocket = flashsocket;

/**
 * Global reference.
 */

var global = require('global');

/**
 * Polling transport polymorphic constructor.
 * Decides on xhr vs jsonp based on feature detection.
 *
 * @api private
 */

function polling (opts) {
  var xhr
    , xd = false;

  if (global.location) {
    var isSSL = 'https:' == location.protocol;
    var port = location.port;

    // some user agents have empty `location.port`
    if (!port) {
      port = isSSL ? 443 : 80;
    }

    xd = opts.hostname != location.hostname || port != opts.port;
  }

  xhr = util.request(xd, opts);

  if (xhr && !opts.forceJSONP) {
    return new XHR(opts);
  } else {
    return new JSONP(opts);
  }
};

},{"../util":34,"./flashsocket":28,"./polling-jsonp":30,"./polling-xhr":31,"./websocket":33,"global":40}],30:[function(require,module,exports){

/**
 * Module requirements.
 */

var Polling = require('./polling')
  , util = require('../util');

/**
 * Module exports.
 */

module.exports = JSONPPolling;

/**
 * Global reference.
 */

var global = require('global');

/**
 * Cached regular expressions.
 */

var rNewline = /\n/g;

/**
 * Global JSONP callbacks.
 */

var callbacks;

/**
 * Callbacks count.
 */

var index = 0;

/**
 * Noop.
 */

function empty () { }

/**
 * JSONP Polling constructor.
 *
 * @param {Object} opts.
 * @api public
 */

function JSONPPolling (opts) {
  Polling.call(this, opts);

  // define global callbacks array if not present
  // we do this here (lazily) to avoid unneeded global pollution
  if (!callbacks) {
    // we need to consider multiple engines in the same page
    if (!global.___eio) global.___eio = [];
    callbacks = global.___eio;
  }

  // callback identifier
  this.index = callbacks.length;

  // add callback to jsonp global
  var self = this;
  callbacks.push(function (msg) {
    self.onData(msg);
  });

  // append to query string
  this.query.j = this.index;
};

/**
 * Inherits from Polling.
 */

util.inherits(JSONPPolling, Polling);

/**
 * Opens the socket.
 *
 * @api private
 */

JSONPPolling.prototype.doOpen = function () {
  var self = this;
  util.defer(function () {
    Polling.prototype.doOpen.call(self);
  });
};

/**
 * Closes the socket
 *
 * @api private
 */

JSONPPolling.prototype.doClose = function () {
  if (this.script) {
    this.script.parentNode.removeChild(this.script);
    this.script = null;
  }

  if (this.form) {
    this.form.parentNode.removeChild(this.form);
    this.form = null;
  }

  Polling.prototype.doClose.call(this);
};

/**
 * Starts a poll cycle.
 *
 * @api private
 */

JSONPPolling.prototype.doPoll = function () {
	var self = this;
  var script = document.createElement('script');

  if (this.script) {
    this.script.parentNode.removeChild(this.script);
    this.script = null;
  }

  script.async = true;
  script.src = this.uri();
	script.onerror = function(e){
		self.onError('jsonp poll error',e);
	}

  var insertAt = document.getElementsByTagName('script')[0];
  insertAt.parentNode.insertBefore(script, insertAt);
  this.script = script;


  if (util.ua.gecko) {
    setTimeout(function () {
      var iframe = document.createElement('iframe');
      document.body.appendChild(iframe);
      document.body.removeChild(iframe);
    }, 100);
  }
};

/**
 * Writes with a hidden iframe.
 *
 * @param {String} data to send
 * @param {Function} called upon flush.
 * @api private
 */

JSONPPolling.prototype.doWrite = function (data, fn) {
  var self = this;

  if (!this.form) {
    var form = document.createElement('form');
    var area = document.createElement('textarea');
    var id = this.iframeId = 'eio_iframe_' + this.index;
    var iframe;

    form.className = 'socketio';
    form.style.position = 'absolute';
    form.style.top = '-1000px';
    form.style.left = '-1000px';
    form.target = id;
    form.method = 'POST';
    form.setAttribute('accept-charset', 'utf-8');
    area.name = 'd';
    form.appendChild(area);
    document.body.appendChild(form);

    this.form = form;
    this.area = area;
  }

  this.form.action = this.uri();

  function complete () {
    initIframe();
    fn();
  };

  function initIframe () {
    if (self.iframe) {
      try {
        self.form.removeChild(self.iframe);
      } catch (e) {
        self.onError('jsonp polling iframe removal error', e);
      }
    }

    try {
      // ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
      var html = '<iframe src="javascript:0" name="'+ self.iframeId +'">';
      iframe = document.createElement(html);
    } catch (e) {
      iframe = document.createElement('iframe');
      iframe.name = self.iframeId;
      iframe.src = 'javascript:0';
    }

    iframe.id = self.iframeId;

    self.form.appendChild(iframe);
    self.iframe = iframe;
  };

  initIframe();

  // escape \n to prevent it from being converted into \r\n by some UAs
  this.area.value = data.replace(rNewline, '\\n');

  try {
    this.form.submit();
  } catch(e) {}

  if (this.iframe.attachEvent) {
    this.iframe.onreadystatechange = function(){
      if (self.iframe.readyState == 'complete') {
        complete();
      }
    };
  } else {
    this.iframe.onload = complete;
  }
};

},{"../util":34,"./polling":32,"global":40}],31:[function(require,module,exports){
/**
 * Module requirements.
 */

var Polling = require('./polling')
  , util = require('../util')
  , Emitter = require('../emitter')
  , debug = require('debug')('engine.io-client:polling-xhr');

/**
 * Module exports.
 */

module.exports = XHR;
module.exports.Request = Request;

/**
 * Global reference.
 */

var global = require('global');

/**
 * Obfuscated key for Blue Coat.
 */

var xobject = global[['Active'].concat('Object').join('X')];

/**
 * Empty function
 */

function empty(){}

/**
 * XHR Polling constructor.
 *
 * @param {Object} opts
 * @api public
 */

function XHR(opts){
  Polling.call(this, opts);

  if (global.location) {
    var isSSL = 'https:' == location.protocol;
    var port = location.port;

    // some user agents have empty `location.port`
    if (!port) {
      port = isSSL ? 443 : 80;
    }

    this.xd = opts.hostname != global.location.hostname ||
      port != opts.port;
  }
};

/**
 * Inherits from Polling.
 */

util.inherits(XHR, Polling);

/**
 * Opens the socket
 *
 * @api private
 */

XHR.prototype.doOpen = function(){
  var self = this;
  util.defer(function(){
    Polling.prototype.doOpen.call(self);
  });
};

/**
 * Creates a request.
 *
 * @param {String} method
 * @api private
 */

XHR.prototype.request = function(opts){
  opts = opts || {};
  opts.uri = this.uri();
  opts.xd = this.xd;
  opts.agent = this.agent || false;
  return new Request(opts);
};

/**
 * Sends data.
 *
 * @param {String} data to send.
 * @param {Function} called upon flush.
 * @api private
 */

XHR.prototype.doWrite = function(data, fn){
  var req = this.request({ method: 'POST', data: data });
  var self = this;
  req.on('success', fn);
  req.on('error', function(err){
    self.onError('xhr post error', err);
  });
  this.sendXhr = req;
};

/**
 * Starts a poll cycle.
 *
 * @api private
 */

XHR.prototype.doPoll = function(){
  debug('xhr poll');
  var req = this.request();
  var self = this;
  req.on('data', function(data){
    self.onData(data);
  });
  req.on('error', function(err){
    self.onError('xhr poll error', err);
  });
  this.pollXhr = req;
};

/**
 * Request constructor
 *
 * @param {Object} options
 * @api public
 */

function Request(opts){
  this.method = opts.method || 'GET';
  this.uri = opts.uri;
  this.xd = !!opts.xd;
  this.async = false !== opts.async;
  this.data = undefined != opts.data ? opts.data : null;
  this.agent = opts.agent;
  this.create();
}

/**
 * Mix in `Emitter`.
 */

Emitter(Request.prototype);

/**
 * Creates the XHR object and sends the request.
 *
 * @api private
 */

Request.prototype.create = function(){
  var xhr = this.xhr = util.request(this.xd, { agent: this.agent });
  var self = this;

  xhr.open(this.method, this.uri, this.async);

  if ('POST' == this.method) {
    try {
      xhr.setRequestHeader('Content-type', 'text/plain;charset=UTF-8');
    } catch (e) {}
  }

  // ie6 check
  if ('withCredentials' in xhr) {
    xhr.withCredentials = true;
  }

  xhr.onreadystatechange = function(){
    var data;

    try {
      if (4 != xhr.readyState) return;
      if (200 == xhr.status || 1223 == xhr.status) {
        data = xhr.responseText;
      } else {
        self.onError(xhr.status);
      }
    } catch (e) {
      self.onError(e);
    }

    if (null != data) {
      self.onData(data);
    }
  };

  debug('sending xhr with url %s | data %s', this.uri, this.data);
  try {
    xhr.send(this.data);
  } catch (e) {
    // Need to defer since .create() is called directly from the constructor
    // and thus the 'error' event can only be only bound *after* this exception
    // occurs.  Therefore, also, we cannot throw here at all.
    setTimeout(function() {
      self.onError(e);
    }, 0);
    return;
  }

  if (xobject) {
    this.index = Request.requestsCount++;
    Request.requests[this.index] = this;
  }
};

/**
 * Called upon successful response.
 *
 * @api private
 */

Request.prototype.onSuccess = function(){
  this.emit('success');
  this.cleanup();
};

/**
 * Called if we have data.
 *
 * @api private
 */

Request.prototype.onData = function(data){
  this.emit('data', data);
  this.onSuccess();
};

/**
 * Called upon error.
 *
 * @api private
 */

Request.prototype.onError = function(err){
  this.emit('error', err);
  this.cleanup();
};

/**
 * Cleans up house.
 *
 * @api private
 */

Request.prototype.cleanup = function(){
  if ('undefined' == typeof this.xhr ) {
    return;
  }
  // xmlhttprequest
  this.xhr.onreadystatechange = empty;

  try {
    this.xhr.abort();
  } catch(e) {}

  if (xobject) {
    delete Request.requests[this.index];
  }

  this.xhr = null;
};

/**
 * Aborts the request.
 *
 * @api public
 */

Request.prototype.abort = function(){
  this.cleanup();
};

if (xobject) {
  Request.requestsCount = 0;
  Request.requests = {};

  global.attachEvent('onunload', function(){
    for (var i in Request.requests) {
      if (Request.requests.hasOwnProperty(i)) {
        Request.requests[i].abort();
      }
    }
  });
}

},{"../emitter":24,"../util":34,"./polling":32,"debug":36,"global":40}],32:[function(require,module,exports){
/**
 * Module dependencies.
 */

var Transport = require('../transport')
  , util = require('../util')
  , parser = require('engine.io-parser')
  , debug = require('debug')('engine.io-client:polling');

/**
 * Module exports.
 */

module.exports = Polling;

/**
 * Global reference.
 */

var global = require('global');

/**
 * Polling interface.
 *
 * @param {Object} opts
 * @api private
 */

function Polling(opts){
  Transport.call(this, opts);
}

/**
 * Inherits from Transport.
 */

util.inherits(Polling, Transport);

/**
 * Transport name.
 */

Polling.prototype.name = 'polling';

/**
 * Opens the socket (triggers polling). We write a PING message to determine
 * when the transport is open.
 *
 * @api private
 */

Polling.prototype.doOpen = function(){
  this.poll();
};

/**
 * Pauses polling.
 *
 * @param {Function} callback upon buffers are flushed and transport is paused
 * @api private
 */

Polling.prototype.pause = function(onPause){
  var pending = 0;
  var self = this;

  this.readyState = 'pausing';

  function pause(){
    debug('paused');
    self.readyState = 'paused';
    onPause();
  }

  if (this.polling || !this.writable) {
    var total = 0;

    if (this.polling) {
      debug('we are currently polling - waiting to pause');
      total++;
      this.once('pollComplete', function(){
        debug('pre-pause polling complete');
        --total || pause();
      });
    }

    if (!this.writable) {
      debug('we are currently writing - waiting to pause');
      total++;
      this.once('drain', function(){
        debug('pre-pause writing complete');
        --total || pause();
      });
    }
  } else {
    pause();
  }
};

/**
 * Starts polling cycle.
 *
 * @api public
 */

Polling.prototype.poll = function(){
  debug('polling');
  this.polling = true;
  this.doPoll();
  this.emit('poll');
};

/**
 * Overloads onData to detect payloads.
 *
 * @api private
 */

Polling.prototype.onData = function(data){
  var self = this;
  debug('polling got data %s', data);

  // decode payload
  parser.decodePayload(data, function(packet, index, total) {
    // if its the first message we consider the transport open
    if ('opening' == self.readyState) {
      self.onOpen();
    }

    // if its a close packet, we close the ongoing requests
    if ('close' == packet.type) {
      self.onClose();
      return false;
    }

    // otherwise bypass onData and handle the message
    self.onPacket(packet);
  });

  // if an event did not trigger closing
  if ('closed' != this.readyState) {
    // if we got data we're not polling
    this.polling = false;
    this.emit('pollComplete');

    if ('open' == this.readyState) {
      this.poll();
    } else {
      debug('ignoring poll - transport state "%s"', this.readyState);
    }
  }
};

/**
 * For polling, send a close packet.
 *
 * @api private
 */

Polling.prototype.doClose = function(){
  var self = this;

  function close(){
    debug('writing close packet');
    self.write([{ type: 'close' }]);
  }

  if ('open' == this.readyState) {
    debug('transport open - closing');
    close();
  } else {
    // in case we're trying to close while
    // handshaking is in progress (GH-164)
    debug('transport not open - deferring close');
    this.once('open', close);
  }
};

/**
 * Writes a packets payload.
 *
 * @param {Array} data packets
 * @param {Function} drain callback
 * @api private
 */

Polling.prototype.write = function(packets){
  var self = this;
  this.writable = false;
  this.doWrite(parser.encodePayload(packets), function(){
    self.writable = true;
    self.emit('drain');
  });
};

/**
 * Generates uri for connection.
 *
 * @api private
 */

Polling.prototype.uri = function(){
  var query = this.query || {};
  var schema = this.secure ? 'https' : 'http';
  var port = '';

  // cache busting is forced for IE / android / iOS6 ಠ_ಠ
  if (global.ActiveXObject || util.ua.chromeframe || util.ua.android || util.ua.ios6 ||
      this.timestampRequests) {
    query[this.timestampParam] = +new Date;
  }

  query = util.qs(query);

  // avoid port if default for schema
  if (this.port && (('https' == schema && this.port != 443) ||
     ('http' == schema && this.port != 80))) {
    port = ':' + this.port;
  }

  // prepend ? to query
  if (query.length) {
    query = '?' + query;
  }

  return schema + '://' + this.hostname + port + this.path + query;
};

},{"../transport":27,"../util":34,"debug":36,"engine.io-parser":37,"global":40}],33:[function(require,module,exports){
/**
 * Module dependencies.
 */

var Transport = require('../transport')
  , WebSocket = require('ws')
  , parser = require('engine.io-parser')
  , util = require('../util')
  , debug = require('debug')('engine.io-client:websocket');

/**
 * Module exports.
 */

module.exports = WS;

/**
 * Global reference.
 */

var global = require('global');

/**
 * WebSocket transport constructor.
 *
 * @api {Object} connection options
 * @api public
 */

function WS(opts){
  Transport.call(this, opts);
};

/**
 * Inherits from Transport.
 */

util.inherits(WS, Transport);

/**
 * Transport name.
 *
 * @api public
 */

WS.prototype.name = 'websocket';

/**
 * Opens socket.
 *
 * @api private
 */

WS.prototype.doOpen = function(){
  if (!this.check()) {
    // let probe timeout
    return;
  }

  var self = this;
  var uri = this.uri();
  var protocols = void(0);
  var opts = { agent: this.agent };

  this.socket = new WebSocket(uri, protocols, opts);
  this.addEventListeners();
};

/**
 * Adds event listeners to the socket
 *
 * @api private
 */

WS.prototype.addEventListeners = function() {
  var self = this;

  this.socket.onopen = function(){
    self.onOpen();
  };
  this.socket.onclose = function(){
    self.onClose();
  };
  this.socket.onmessage = function(ev){
    self.onData(ev.data);
  };
  this.socket.onerror = function(e){
    self.onError('websocket error', e);
  };
};

/**
 * Override `onData` to use a timer on iOS.
 * See: https://gist.github.com/mloughran/2052006
 *
 * @api private
 */

if ('undefined' != typeof navigator
  && /iPad|iPhone|iPod/i.test(navigator.userAgent)) {
  WS.prototype.onData = function(data){
    var self = this;
    setTimeout(function(){
      Transport.prototype.onData.call(self, data);
    }, 0);
  };
}

/**
 * Writes data to socket.
 *
 * @param {Array} array of packets.
 * @api private
 */

WS.prototype.write = function(packets){
  var self = this;
  this.writable = false;
  // encodePacket efficient as it uses WS framing
  // no need for encodePayload
  for (var i = 0, l = packets.length; i < l; i++) {
    this.socket.send(parser.encodePacket(packets[i]));
  }
  function ondrain() {
    self.writable = true;
    self.emit('drain');
  }
  // fake drain
  // defer to next tick to allow Socket to clear writeBuffer
  setTimeout(ondrain, 0);
};

/**
 * Called upon close
 *
 * @api private
 */

WS.prototype.onClose = function(){
  Transport.prototype.onClose.call(this);
};

/**
 * Closes socket.
 *
 * @api private
 */

WS.prototype.doClose = function(){
  if (typeof this.socket !== 'undefined') {
    this.socket.close();
  }
};

/**
 * Generates uri for connection.
 *
 * @api private
 */

WS.prototype.uri = function(){
  var query = this.query || {};
  var schema = this.secure ? 'wss' : 'ws';
  var port = '';

  // avoid port if default for schema
  if (this.port && (('wss' == schema && this.port != 443)
    || ('ws' == schema && this.port != 80))) {
    port = ':' + this.port;
  }

  // append timestamp to URI
  if (this.timestampRequests) {
    query[this.timestampParam] = +new Date;
  }

  query = util.qs(query);

  // prepend ? to query
  if (query.length) {
    query = '?' + query;
  }

  return schema + '://' + this.hostname + port + this.path + query;
};

/**
 * Feature detection for WebSocket.
 *
 * @return {Boolean} whether this transport is available.
 * @api public
 */

WS.prototype.check = function(){
  return !!WebSocket && !('__initialize' in WebSocket && this.name === WS.prototype.name);
};

},{"../transport":27,"../util":34,"debug":36,"engine.io-parser":37,"global":40,"ws":43}],34:[function(require,module,exports){

var global = require('global');

/**
 * Status of page load.
 */

var pageLoaded = false;

/**
 * Inheritance.
 *
 * @param {Function} ctor a
 * @param {Function} ctor b
 * @api private
 */

exports.inherits = function inherits (a, b) {
  function c () { }
  c.prototype = b.prototype;
  a.prototype = new c;
};

/**
 * Object.keys
 */

exports.keys = Object.keys || function (obj) {
  var ret = [];
  var has = Object.prototype.hasOwnProperty;

  for (var i in obj) {
    if (has.call(obj, i)) {
      ret.push(i);
    }
  }

  return ret;
};

/**
 * Adds an event.
 *
 * @api private
 */

exports.on = function (element, event, fn, capture) {
  if (element.attachEvent) {
    element.attachEvent('on' + event, fn);
  } else if (element.addEventListener) {
    element.addEventListener(event, fn, capture);
  }
};

/**
 * Load utility.
 *
 * @api private
 */

exports.load = function (fn) {
  if (global.document && document.readyState === 'complete' || pageLoaded) {
    return fn();
  }

  exports.on(global, 'load', fn, false);
};

/**
 * Change the internal pageLoaded value.
 */

if ('undefined' != typeof window) {
  exports.load(function () {
    pageLoaded = true;
  });
}

/**
 * Defers a function to ensure a spinner is not displayed by the browser.
 *
 * @param {Function} fn
 * @api private
 */

exports.defer = function (fn) {
  if (!exports.ua.webkit || 'undefined' != typeof importScripts) {
    return fn();
  }

  exports.load(function () {
    setTimeout(fn, 100);
  });
};

/**
 * JSON parse.
 *
 * @see Based on jQuery#parseJSON (MIT) and JSON2
 * @api private
 */

var rvalidchars = /^[\],:{}\s]*$/;
var rvalidescape = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g;
var rvalidtokens = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g;
var rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g;
var rtrimLeft = /^\s+/;
var rtrimRight = /\s+$/;

exports.parseJSON = function (data) {
  if ('string' != typeof data || !data) {
    return null;
  }

  data = data.replace(rtrimLeft, '').replace(rtrimRight, '');

  // Attempt to parse using the native JSON parser first
  if (global.JSON && JSON.parse) {
    return JSON.parse(data);
  }

  if (rvalidchars.test(data.replace(rvalidescape, '@')
      .replace(rvalidtokens, ']')
      .replace(rvalidbraces, ''))) {
    return (new Function('return ' + data))();
  }
};

/**
 * UA / engines detection namespace.
 *
 * @namespace
 */

exports.ua = {};

/**
 * Whether the UA supports CORS for XHR.
 *
 * @api private
 */

exports.ua.hasCORS = require('has-cors');

/**
 * Detect webkit.
 *
 * @api private
 */

exports.ua.webkit = 'undefined' != typeof navigator &&
  /webkit/i.test(navigator.userAgent);

/**
 * Detect gecko.
 *
 * @api private
 */

exports.ua.gecko = 'undefined' != typeof navigator &&
  /gecko/i.test(navigator.userAgent);

/**
 * Detect android;
 */

exports.ua.android = 'undefined' != typeof navigator &&
  /android/i.test(navigator.userAgent);

/**
 * Detect iOS.
 */

exports.ua.ios = 'undefined' != typeof navigator &&
  /^(iPad|iPhone|iPod)$/.test(navigator.platform);
exports.ua.ios6 = exports.ua.ios && /OS 6_/.test(navigator.userAgent);

/**
 * Detect Chrome Frame.
 */

exports.ua.chromeframe = Boolean(global.externalHost);

/**
 * XHR request helper.
 *
 * @param {Boolean} whether we need xdomain
 * @param {Object} opts Optional "options" object
 * @api private
 */

exports.request = function request (xdomain, opts) {
  opts = opts || {};
  opts.xdomain = xdomain;

  try {
    var _XMLHttpRequest = require('xmlhttprequest');
    return new _XMLHttpRequest(opts);
  } catch (e) {}

  // XMLHttpRequest can be disabled on IE
  try {
    if ('undefined' != typeof XMLHttpRequest && (!xdomain || exports.ua.hasCORS)) {
      return new XMLHttpRequest();
    }
  } catch (e) { }

  if (!xdomain) {
    try {
      return new ActiveXObject('Microsoft.XMLHTTP');
    } catch(e) { }
  }
};

/**
 * Parses an URI
 *
 * @author Steven Levithan <stevenlevithan.com> (MIT license)
 * @api private
 */

var re = /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;

var parts = [
    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host'
  , 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
];

exports.parseUri = function (str) {
  var m = re.exec(str || '')
    , uri = {}
    , i = 14;

  while (i--) {
    uri[parts[i]] = m[i] || '';
  }

  return uri;
};

/**
 * Compiles a querystring
 *
 * @param {Object}
 * @api private
 */

exports.qs = function (obj) {
  var str = '';

  for (var i in obj) {
    if (obj.hasOwnProperty(i)) {
      if (str.length) str += '&';
      str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);
    }
  }

  return str;
};

/**
 * Parses a simple querystring.
 *
 * @param {String} qs
 * @api private
 */

exports.qsParse = function(qs){
  var qry = {};
  var pairs = qs.split('&');
  for (var i = 0, l = pairs.length; i < l; i++) {
    var pair = pairs[i].split('=');
    qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
  }
  return qry;
};

},{"global":40,"has-cors":41,"xmlhttprequest":35}],35:[function(require,module,exports){
// browser shim for xmlhttprequest module
var hasCORS = require('has-cors');

module.exports = function(opts) {
  var xdomain = opts.xdomain;

  // XMLHttpRequest can be disabled on IE
  try {
    if ('undefined' != typeof XMLHttpRequest && (!xdomain || hasCORS)) {
      return new XMLHttpRequest();
    }
  } catch (e) { }

  if (!xdomain) {
    try {
      return new ActiveXObject('Microsoft.XMLHTTP');
    } catch(e) { }
  }
}

},{"has-cors":41}],36:[function(require,module,exports){

/**
 * Expose `debug()` as the module.
 */

module.exports = debug;

/**
 * Create a debugger with the given `name`.
 *
 * @param {String} name
 * @return {Type}
 * @api public
 */

function debug(name) {
  if (!debug.enabled(name)) return function(){};

  return function(fmt){
    var curr = new Date;
    var ms = curr - (debug[name] || curr);
    debug[name] = curr;

    fmt = name
      + ' '
      + fmt
      + ' +' + debug.humanize(ms);

    // This hackery is required for IE8
    // where `console.log` doesn't have 'apply'
    window.console
      && console.log
      && Function.prototype.apply.call(console.log, console, arguments);
  }
}

/**
 * The currently active debug mode names.
 */

debug.names = [];
debug.skips = [];

/**
 * Enables a debug mode by name. This can include modes
 * separated by a colon and wildcards.
 *
 * @param {String} name
 * @api public
 */

debug.enable = function(name) {
  try {
    localStorage.debug = name;
  } catch(e){}

  var split = (name || '').split(/[\s,]+/)
    , len = split.length;

  for (var i = 0; i < len; i++) {
    name = split[i].replace('*', '.*?');
    if (name[0] === '-') {
      debug.skips.push(new RegExp('^' + name.substr(1) + '$'));
    }
    else {
      debug.names.push(new RegExp('^' + name + '$'));
    }
  }
};

/**
 * Disable debug output.
 *
 * @api public
 */

debug.disable = function(){
  debug.enable('');
};

/**
 * Humanize the given `ms`.
 *
 * @param {Number} m
 * @return {String}
 * @api private
 */

debug.humanize = function(ms) {
  var sec = 1000
    , min = 60 * 1000
    , hour = 60 * min;

  if (ms >= hour) return (ms / hour).toFixed(1) + 'h';
  if (ms >= min) return (ms / min).toFixed(1) + 'm';
  if (ms >= sec) return (ms / sec | 0) + 's';
  return ms + 'ms';
};

/**
 * Returns true if the given mode name is enabled, false otherwise.
 *
 * @param {String} name
 * @return {Boolean}
 * @api public
 */

debug.enabled = function(name) {
  for (var i = 0, len = debug.skips.length; i < len; i++) {
    if (debug.skips[i].test(name)) {
      return false;
    }
  }
  for (var i = 0, len = debug.names.length; i < len; i++) {
    if (debug.names[i].test(name)) {
      return true;
    }
  }
  return false;
};

// persist

if (window.localStorage) debug.enable(localStorage.debug);

},{}],37:[function(require,module,exports){
arguments[4][1][0].apply(exports,arguments)
},{"./lib/":38}],38:[function(require,module,exports){
/**
 * Module dependencies.
 */

var keys = require('./keys');

/**
 * Current protocol version.
 */
exports.protocol = 2;

/**
 * Packet types.
 */

var packets = exports.packets = {
    open:     0    // non-ws
  , close:    1    // non-ws
  , ping:     2
  , pong:     3
  , message:  4
  , upgrade:  5
  , noop:     6
};

var packetslist = keys(packets);

/**
 * Premade error packet.
 */

var err = { type: 'error', data: 'parser error' };

/**
 * Encodes a packet.
 *
 *     <packet type id> [ `:` <data> ]
 *
 * Example:
 *
 *     5:hello world
 *     3
 *     4
 *
 * @api private
 */

exports.encodePacket = function (packet) {
  var encoded = packets[packet.type];

  // data fragment is optional
  if (undefined !== packet.data) {
    encoded += String(packet.data);
  }

  return '' + encoded;
};

/**
 * Decodes a packet.
 *
 * @return {Object} with `type` and `data` (if any)
 * @api private
 */

exports.decodePacket = function (data) {
  var type = data.charAt(0);

  if (Number(type) != type || !packetslist[type]) {
    return err;
  }

  if (data.length > 1) {
    return { type: packetslist[type], data: data.substring(1) };
  } else {
    return { type: packetslist[type] };
  }
};

/**
 * Encodes multiple messages (payload).
 *
 *     <length>:data
 *
 * Example:
 *
 *     11:hello world2:hi
 *
 * @param {Array} packets
 * @api private
 */

exports.encodePayload = function (packets) {
  if (!packets.length) {
    return '0:';
  }

  var encoded = '';
  var message;

  for (var i = 0, l = packets.length; i < l; i++) {
    message = exports.encodePacket(packets[i]);
    encoded += message.length + ':' + message;
  }

  return encoded;
};

/*
 * Decodes data when a payload is maybe expected.
 *
 * @param {String} data, callback method
 * @api public
 */

exports.decodePayload = function (data, callback) {
  var packet;
  if (data == '') {
    // parser error - ignoring payload
    return callback(err, 0, 1);
  }

  var length = ''
    , n, msg;

  for (var i = 0, l = data.length; i < l; i++) {
    var chr = data.charAt(i);

    if (':' != chr) {
      length += chr;
    } else {
      if ('' == length || (length != (n = Number(length)))) {
        // parser error - ignoring payload
        return callback(err, 0, 1);
      }

      msg = data.substr(i + 1, n);

      if (length != msg.length) {
        // parser error - ignoring payload
        return callback(err, 0, 1);
      }

      if (msg.length) {
        packet = exports.decodePacket(msg);

        if (err.type == packet.type && err.data == packet.data) {
          // parser error in individual packet - ignoring payload
          return callback(err, 0, 1);
        }

        var ret = callback(packet, i + n, l);
        if (false === ret) return;
      }

      // advance cursor
      i += n;
      length = '';
    }
  }

  if (length != '') {
    // parser error - ignoring payload
    return callback(err, 0, 1);
  }

};

},{"./keys":39}],39:[function(require,module,exports){

/**
 * Gets the keys for an object.
 *
 * @return {Array} keys
 * @api private
 */

module.exports = Object.keys || function keys (obj){
  var arr = [];
  var has = Object.prototype.hasOwnProperty;

  for (var i in obj) {
    if (has.call(obj, i)) {
      arr.push(i);
    }
  }
  return arr;
};

},{}],40:[function(require,module,exports){

/**
 * Returns `this`. Execute this without a "context" (i.e. without it being
 * attached to an object of the left-hand side), and `this` points to the
 * "global" scope of the current JS execution.
 */

module.exports = (function () { return this; })();

},{}],41:[function(require,module,exports){

/**
 * Module dependencies.
 */

var global = require('global');

/**
 * Module exports.
 *
 * Logic borrowed from Modernizr:
 *
 *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js
 */

module.exports = 'XMLHttpRequest' in global &&
  'withCredentials' in new global.XMLHttpRequest();

},{"global":40}],42:[function(require,module,exports){
module.exports=require(22)
},{}],43:[function(require,module,exports){

/**
 * Module dependencies.
 */

var global = (function() { return this; })();

/**
 * WebSocket constructor.
 */

var WebSocket = global.WebSocket || global.MozWebSocket;

/**
 * Module exports.
 */

module.exports = WebSocket ? ws : null;

/**
 * WebSocket constructor.
 *
 * The third `opts` options object gets ignored in web browsers, since it's
 * non-standard, and throws a TypeError if passed to the constructor.
 * See: https://github.com/einaros/ws/issues/227
 *
 * @param {String} uri
 * @param {Array} protocols (optional)
 * @param {Object) opts (optional)
 * @api public
 */

function ws(uri, protocols, opts) {
  var instance;
  if (protocols) {
    instance = new WebSocket(uri, protocols);
  } else {
    instance = new WebSocket(uri);
  }
  return instance;
}

if (WebSocket) ws.prototype = WebSocket.prototype;

},{}],44:[function(require,module,exports){

/**
 * HOP ref.
 */

var has = Object.prototype.hasOwnProperty;

/**
 * Return own keys in `obj`.
 *
 * @param {Object} obj
 * @return {Array}
 * @api public
 */

exports.keys = Object.keys || function(obj){
  var keys = [];
  for (var key in obj) {
    if (has.call(obj, key)) {
      keys.push(key);
    }
  }
  return keys;
};

/**
 * Return own values in `obj`.
 *
 * @param {Object} obj
 * @return {Array}
 * @api public
 */

exports.values = function(obj){
  var vals = [];
  for (var key in obj) {
    if (has.call(obj, key)) {
      vals.push(obj[key]);
    }
  }
  return vals;
};

/**
 * Merge `b` into `a`.
 *
 * @param {Object} a
 * @param {Object} b
 * @return {Object} a
 * @api public
 */

exports.merge = function(a, b){
  for (var key in b) {
    if (has.call(b, key)) {
      a[key] = b[key];
    }
  }
  return a;
};

/**
 * Return length of `obj`.
 *
 * @param {Object} obj
 * @return {Number}
 * @api public
 */

exports.length = function(obj){
  return exports.keys(obj).length;
};

/**
 * Check if `obj` is empty.
 *
 * @param {Object} obj
 * @return {Boolean}
 * @api public
 */

exports.isEmpty = function(obj){
  return 0 == exports.length(obj);
};
},{}],45:[function(require,module,exports){

/**
 * Module dependencies.
 */

var debug = require('debug')('socket.io-parser');
var json = require('json3');

/**
 * Protocol version.
 *
 * @api public
 */

exports.protocol = 1;

/**
 * Packet types.
 *
 * @api public
 */

exports.types = [
  'CONNECT',
  'DISCONNECT',
  'EVENT',
  'ACK',
  'ERROR'
];

/**
 * Packet type `connect`.
 *
 * @api public
 */

exports.CONNECT = 0;

/**
 * Packet type `disconnect`.
 *
 * @api public
 */

exports.DISCONNECT = 1;

/**
 * Packet type `event`.
 *
 * @api public
 */

exports.EVENT = 2;

/**
 * Packet type `ack`.
 *
 * @api public
 */

exports.ACK = 3;

/**
 * Packet type `error`.
 *
 * @api public
 */

exports.ERROR = 4;

/**
 * Encode.
 *
 * @param {Object} packet
 * @return {String} encoded
 * @api public
 */

exports.encode = function(obj){
  var str = '';
  var nsp = false;

  // first is type
  str += obj.type;

  // if we have a namespace other than `/`
  // we append it followed by a comma `,`
  if (obj.nsp && '/' != obj.nsp) {
    nsp = true;
    str += obj.nsp;
  }

  // immediately followed by the id
  if (null != obj.id) {
    if (nsp) {
      str += ',';
      nsp = false;
    }
    str += obj.id;
  }

  // json data
  if (null != obj.data) {
    if (nsp) str += ',';
    str += json.stringify(obj.data);
  }

  debug('encoded %j as %s', obj, str);
  return str;
};

/**
 * Decode.
 *
 * @param {String} str
 * @return {Object} packet
 * @api public
 */

exports.decode = function(str){
  var p = {};
  var i = 0;

  // look up type
  p.type = Number(str.charAt(0));
  if (null == exports.types[p.type]) return error();

  // look up namespace (if any)
  if ('/' == str.charAt(i + 1)) {
    p.nsp = '';
    while (++i) {
      var c = str.charAt(i);
      if (',' == c) break;
      p.nsp += c;
      if (i + 1 == str.length) break;
    }
  } else {
    p.nsp = '/';
  }

  // look up id
  var next = str.charAt(i + 1);
  if ('' != next && Number(next) == next) {
    p.id = '';
    while (++i) {
      var c = str.charAt(i);
      if (null == c || Number(c) != c) {
        --i;
        break;
      }
      p.id += str.charAt(i);
      if (i + 1 == str.length) break;
    }
    p.id = Number(p.id);
  }

  // look up json data
  if (str.charAt(++i)) {
    try {
      p.data = json.parse(str.substr(i));
    } catch(e){
      return error();
    }
  }

  debug('decoded %s as %j', str, p);
  return p;
};

function error(data){
  return {
    type: exports.ERROR,
    data: 'parser error'
  };
}

},{"debug":19,"json3":46}],46:[function(require,module,exports){
/*! JSON v3.2.6 | http://bestiejs.github.io/json3 | Copyright 2012-2013, Kit Cambridge | http://kit.mit-license.org */
;(function (window) {
  // Convenience aliases.
  var getClass = {}.toString, isProperty, forEach, undef;

  // Detect the `define` function exposed by asynchronous module loaders. The
  // strict `define` check is necessary for compatibility with `r.js`.
  var isLoader = typeof define === "function" && define.amd;

  // Detect native implementations.
  var nativeJSON = typeof JSON == "object" && JSON;

  // Set up the JSON 3 namespace, preferring the CommonJS `exports` object if
  // available.
  var JSON3 = typeof exports == "object" && exports && !exports.nodeType && exports;

  if (JSON3 && nativeJSON) {
    // Explicitly delegate to the native `stringify` and `parse`
    // implementations in CommonJS environments.
    JSON3.stringify = nativeJSON.stringify;
    JSON3.parse = nativeJSON.parse;
  } else {
    // Export for web browsers, JavaScript engines, and asynchronous module
    // loaders, using the global `JSON` object if available.
    JSON3 = window.JSON = nativeJSON || {};
  }

  // Test the `Date#getUTC*` methods. Based on work by @Yaffle.
  var isExtended = new Date(-3509827334573292);
  try {
    // The `getUTCFullYear`, `Month`, and `Date` methods return nonsensical
    // results for certain dates in Opera >= 10.53.
    isExtended = isExtended.getUTCFullYear() == -109252 && isExtended.getUTCMonth() === 0 && isExtended.getUTCDate() === 1 &&
      // Safari < 2.0.2 stores the internal millisecond time value correctly,
      // but clips the values returned by the date methods to the range of
      // signed 32-bit integers ([-2 ** 31, 2 ** 31 - 1]).
      isExtended.getUTCHours() == 10 && isExtended.getUTCMinutes() == 37 && isExtended.getUTCSeconds() == 6 && isExtended.getUTCMilliseconds() == 708;
  } catch (exception) {}

  // Internal: Determines whether the native `JSON.stringify` and `parse`
  // implementations are spec-compliant. Based on work by Ken Snyder.
  function has(name) {
    if (has[name] !== undef) {
      // Return cached feature test result.
      return has[name];
    }

    var isSupported;
    if (name == "bug-string-char-index") {
      // IE <= 7 doesn't support accessing string characters using square
      // bracket notation. IE 8 only supports this for primitives.
      isSupported = "a"[0] != "a";
    } else if (name == "json") {
      // Indicates whether both `JSON.stringify` and `JSON.parse` are
      // supported.
      isSupported = has("json-stringify") && has("json-parse");
    } else {
      var value, serialized = '{"a":[1,true,false,null,"\\u0000\\b\\n\\f\\r\\t"]}';
      // Test `JSON.stringify`.
      if (name == "json-stringify") {
        var stringify = JSON3.stringify, stringifySupported = typeof stringify == "function" && isExtended;
        if (stringifySupported) {
          // A test function object with a custom `toJSON` method.
          (value = function () {
            return 1;
          }).toJSON = value;
          try {
            stringifySupported =
              // Firefox 3.1b1 and b2 serialize string, number, and boolean
              // primitives as object literals.
              stringify(0) === "0" &&
              // FF 3.1b1, b2, and JSON 2 serialize wrapped primitives as object
              // literals.
              stringify(new Number()) === "0" &&
              stringify(new String()) == '""' &&
              // FF 3.1b1, 2 throw an error if the value is `null`, `undefined`, or
              // does not define a canonical JSON representation (this applies to
              // objects with `toJSON` properties as well, *unless* they are nested
              // within an object or array).
              stringify(getClass) === undef &&
              // IE 8 serializes `undefined` as `"undefined"`. Safari <= 5.1.7 and
              // FF 3.1b3 pass this test.
              stringify(undef) === undef &&
              // Safari <= 5.1.7 and FF 3.1b3 throw `Error`s and `TypeError`s,
              // respectively, if the value is omitted entirely.
              stringify() === undef &&
              // FF 3.1b1, 2 throw an error if the given value is not a number,
              // string, array, object, Boolean, or `null` literal. This applies to
              // objects with custom `toJSON` methods as well, unless they are nested
              // inside object or array literals. YUI 3.0.0b1 ignores custom `toJSON`
              // methods entirely.
              stringify(value) === "1" &&
              stringify([value]) == "[1]" &&
              // Prototype <= 1.6.1 serializes `[undefined]` as `"[]"` instead of
              // `"[null]"`.
              stringify([undef]) == "[null]" &&
              // YUI 3.0.0b1 fails to serialize `null` literals.
              stringify(null) == "null" &&
              // FF 3.1b1, 2 halts serialization if an array contains a function:
              // `[1, true, getClass, 1]` serializes as "[1,true,],". FF 3.1b3
              // elides non-JSON values from objects and arrays, unless they
              // define custom `toJSON` methods.
              stringify([undef, getClass, null]) == "[null,null,null]" &&
              // Simple serialization test. FF 3.1b1 uses Unicode escape sequences
              // where character escape codes are expected (e.g., `\b` => `\u0008`).
              stringify({ "a": [value, true, false, null, "\x00\b\n\f\r\t"] }) == serialized &&
              // FF 3.1b1 and b2 ignore the `filter` and `width` arguments.
              stringify(null, value) === "1" &&
              stringify([1, 2], null, 1) == "[\n 1,\n 2\n]" &&
              // JSON 2, Prototype <= 1.7, and older WebKit builds incorrectly
              // serialize extended years.
              stringify(new Date(-8.64e15)) == '"-271821-04-20T00:00:00.000Z"' &&
              // The milliseconds are optional in ES 5, but required in 5.1.
              stringify(new Date(8.64e15)) == '"+275760-09-13T00:00:00.000Z"' &&
              // Firefox <= 11.0 incorrectly serializes years prior to 0 as negative
              // four-digit years instead of six-digit years. Credits: @Yaffle.
              stringify(new Date(-621987552e5)) == '"-000001-01-01T00:00:00.000Z"' &&
              // Safari <= 5.1.5 and Opera >= 10.53 incorrectly serialize millisecond
              // values less than 1000. Credits: @Yaffle.
              stringify(new Date(-1)) == '"1969-12-31T23:59:59.999Z"';
          } catch (exception) {
            stringifySupported = false;
          }
        }
        isSupported = stringifySupported;
      }
      // Test `JSON.parse`.
      if (name == "json-parse") {
        var parse = JSON3.parse;
        if (typeof parse == "function") {
          try {
            // FF 3.1b1, b2 will throw an exception if a bare literal is provided.
            // Conforming implementations should also coerce the initial argument to
            // a string prior to parsing.
            if (parse("0") === 0 && !parse(false)) {
              // Simple parsing test.
              value = parse(serialized);
              var parseSupported = value["a"].length == 5 && value["a"][0] === 1;
              if (parseSupported) {
                try {
                  // Safari <= 5.1.2 and FF 3.1b1 allow unescaped tabs in strings.
                  parseSupported = !parse('"\t"');
                } catch (exception) {}
                if (parseSupported) {
                  try {
                    // FF 4.0 and 4.0.1 allow leading `+` signs and leading
                    // decimal points. FF 4.0, 4.0.1, and IE 9-10 also allow
                    // certain octal literals.
                    parseSupported = parse("01") !== 1;
                  } catch (exception) {}
                }
                if (parseSupported) {
                  try {
                    // FF 4.0, 4.0.1, and Rhino 1.7R3-R4 allow trailing decimal
                    // points. These environments, along with FF 3.1b1 and 2,
                    // also allow trailing commas in JSON objects and arrays.
                    parseSupported = parse("1.") !== 1;
                  } catch (exception) {}
                }
              }
            }
          } catch (exception) {
            parseSupported = false;
          }
        }
        isSupported = parseSupported;
      }
    }
    return has[name] = !!isSupported;
  }

  if (!has("json")) {
    // Common `[[Class]]` name aliases.
    var functionClass = "[object Function]";
    var dateClass = "[object Date]";
    var numberClass = "[object Number]";
    var stringClass = "[object String]";
    var arrayClass = "[object Array]";
    var booleanClass = "[object Boolean]";

    // Detect incomplete support for accessing string characters by index.
    var charIndexBuggy = has("bug-string-char-index");

    // Define additional utility methods if the `Date` methods are buggy.
    if (!isExtended) {
      var floor = Math.floor;
      // A mapping between the months of the year and the number of days between
      // January 1st and the first of the respective month.
      var Months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];
      // Internal: Calculates the number of days between the Unix epoch and the
      // first day of the given month.
      var getDay = function (year, month) {
        return Months[month] + 365 * (year - 1970) + floor((year - 1969 + (month = +(month > 1))) / 4) - floor((year - 1901 + month) / 100) + floor((year - 1601 + month) / 400);
      };
    }

    // Internal: Determines if a property is a direct property of the given
    // object. Delegates to the native `Object#hasOwnProperty` method.
    if (!(isProperty = {}.hasOwnProperty)) {
      isProperty = function (property) {
        var members = {}, constructor;
        if ((members.__proto__ = null, members.__proto__ = {
          // The *proto* property cannot be set multiple times in recent
          // versions of Firefox and SeaMonkey.
          "toString": 1
        }, members).toString != getClass) {
          // Safari <= 2.0.3 doesn't implement `Object#hasOwnProperty`, but
          // supports the mutable *proto* property.
          isProperty = function (property) {
            // Capture and break the object's prototype chain (see section 8.6.2
            // of the ES 5.1 spec). The parenthesized expression prevents an
            // unsafe transformation by the Closure Compiler.
            var original = this.__proto__, result = property in (this.__proto__ = null, this);
            // Restore the original prototype chain.
            this.__proto__ = original;
            return result;
          };
        } else {
          // Capture a reference to the top-level `Object` constructor.
          constructor = members.constructor;
          // Use the `constructor` property to simulate `Object#hasOwnProperty` in
          // other environments.
          isProperty = function (property) {
            var parent = (this.constructor || constructor).prototype;
            return property in this && !(property in parent && this[property] === parent[property]);
          };
        }
        members = null;
        return isProperty.call(this, property);
      };
    }

    // Internal: A set of primitive types used by `isHostType`.
    var PrimitiveTypes = {
      'boolean': 1,
      'number': 1,
      'string': 1,
      'undefined': 1
    };

    // Internal: Determines if the given object `property` value is a
    // non-primitive.
    var isHostType = function (object, property) {
      var type = typeof object[property];
      return type == 'object' ? !!object[property] : !PrimitiveTypes[type];
    };

    // Internal: Normalizes the `for...in` iteration algorithm across
    // environments. Each enumerated key is yielded to a `callback` function.
    forEach = function (object, callback) {
      var size = 0, Properties, members, property;

      // Tests for bugs in the current environment's `for...in` algorithm. The
      // `valueOf` property inherits the non-enumerable flag from
      // `Object.prototype` in older versions of IE, Netscape, and Mozilla.
      (Properties = function () {
        this.valueOf = 0;
      }).prototype.valueOf = 0;

      // Iterate over a new instance of the `Properties` class.
      members = new Properties();
      for (property in members) {
        // Ignore all properties inherited from `Object.prototype`.
        if (isProperty.call(members, property)) {
          size++;
        }
      }
      Properties = members = null;

      // Normalize the iteration algorithm.
      if (!size) {
        // A list of non-enumerable properties inherited from `Object.prototype`.
        members = ["valueOf", "toString", "toLocaleString", "propertyIsEnumerable", "isPrototypeOf", "hasOwnProperty", "constructor"];
        // IE <= 8, Mozilla 1.0, and Netscape 6.2 ignore shadowed non-enumerable
        // properties.
        forEach = function (object, callback) {
          var isFunction = getClass.call(object) == functionClass, property, length;
          var hasProperty = !isFunction && typeof object.constructor != 'function' && isHostType(object, 'hasOwnProperty') ? object.hasOwnProperty : isProperty;
          for (property in object) {
            // Gecko <= 1.0 enumerates the `prototype` property of functions under
            // certain conditions; IE does not.
            if (!(isFunction && property == "prototype") && hasProperty.call(object, property)) {
              callback(property);
            }
          }
          // Manually invoke the callback for each non-enumerable property.
          for (length = members.length; property = members[--length]; hasProperty.call(object, property) && callback(property));
        };
      } else if (size == 2) {
        // Safari <= 2.0.4 enumerates shadowed properties twice.
        forEach = function (object, callback) {
          // Create a set of iterated properties.
          var members = {}, isFunction = getClass.call(object) == functionClass, property;
          for (property in object) {
            // Store each property name to prevent double enumeration. The
            // `prototype` property of functions is not enumerated due to cross-
            // environment inconsistencies.
            if (!(isFunction && property == "prototype") && !isProperty.call(members, property) && (members[property] = 1) && isProperty.call(object, property)) {
              callback(property);
            }
          }
        };
      } else {
        // No bugs detected; use the standard `for...in` algorithm.
        forEach = function (object, callback) {
          var isFunction = getClass.call(object) == functionClass, property, isConstructor;
          for (property in object) {
            if (!(isFunction && property == "prototype") && isProperty.call(object, property) && !(isConstructor = property === "constructor")) {
              callback(property);
            }
          }
          // Manually invoke the callback for the `constructor` property due to
          // cross-environment inconsistencies.
          if (isConstructor || isProperty.call(object, (property = "constructor"))) {
            callback(property);
          }
        };
      }
      return forEach(object, callback);
    };

    // Public: Serializes a JavaScript `value` as a JSON string. The optional
    // `filter` argument may specify either a function that alters how object and
    // array members are serialized, or an array of strings and numbers that
    // indicates which properties should be serialized. The optional `width`
    // argument may be either a string or number that specifies the indentation
    // level of the output.
    if (!has("json-stringify")) {
      // Internal: A map of control characters and their escaped equivalents.
      var Escapes = {
        92: "\\\\",
        34: '\\"',
        8: "\\b",
        12: "\\f",
        10: "\\n",
        13: "\\r",
        9: "\\t"
      };

      // Internal: Converts `value` into a zero-padded string such that its
      // length is at least equal to `width`. The `width` must be <= 6.
      var leadingZeroes = "000000";
      var toPaddedString = function (width, value) {
        // The `|| 0` expression is necessary to work around a bug in
        // Opera <= 7.54u2 where `0 == -0`, but `String(-0) !== "0"`.
        return (leadingZeroes + (value || 0)).slice(-width);
      };

      // Internal: Double-quotes a string `value`, replacing all ASCII control
      // characters (characters with code unit values between 0 and 31) with
      // their escaped equivalents. This is an implementation of the
      // `Quote(value)` operation defined in ES 5.1 section 15.12.3.
      var unicodePrefix = "\\u00";
      var quote = function (value) {
        var result = '"', index = 0, length = value.length, isLarge = length > 10 && charIndexBuggy, symbols;
        if (isLarge) {
          symbols = value.split("");
        }
        for (; index < length; index++) {
          var charCode = value.charCodeAt(index);
          // If the character is a control character, append its Unicode or
          // shorthand escape sequence; otherwise, append the character as-is.
          switch (charCode) {
            case 8: case 9: case 10: case 12: case 13: case 34: case 92:
              result += Escapes[charCode];
              break;
            default:
              if (charCode < 32) {
                result += unicodePrefix + toPaddedString(2, charCode.toString(16));
                break;
              }
              result += isLarge ? symbols[index] : charIndexBuggy ? value.charAt(index) : value[index];
          }
        }
        return result + '"';
      };

      // Internal: Recursively serializes an object. Implements the
      // `Str(key, holder)`, `JO(value)`, and `JA(value)` operations.
      var serialize = function (property, object, callback, properties, whitespace, indentation, stack) {
        var value, className, year, month, date, time, hours, minutes, seconds, milliseconds, results, element, index, length, prefix, result;
        try {
          // Necessary for host object support.
          value = object[property];
        } catch (exception) {}
        if (typeof value == "object" && value) {
          className = getClass.call(value);
          if (className == dateClass && !isProperty.call(value, "toJSON")) {
            if (value > -1 / 0 && value < 1 / 0) {
              // Dates are serialized according to the `Date#toJSON` method
              // specified in ES 5.1 section 15.9.5.44. See section 15.9.1.15
              // for the ISO 8601 date time string format.
              if (getDay) {
                // Manually compute the year, month, date, hours, minutes,
                // seconds, and milliseconds if the `getUTC*` methods are
                // buggy. Adapted from @Yaffle's `date-shim` project.
                date = floor(value / 864e5);
                for (year = floor(date / 365.2425) + 1970 - 1; getDay(year + 1, 0) <= date; year++);
                for (month = floor((date - getDay(year, 0)) / 30.42); getDay(year, month + 1) <= date; month++);
                date = 1 + date - getDay(year, month);
                // The `time` value specifies the time within the day (see ES
                // 5.1 section 15.9.1.2). The formula `(A % B + B) % B` is used
                // to compute `A modulo B`, as the `%` operator does not
                // correspond to the `modulo` operation for negative numbers.
                time = (value % 864e5 + 864e5) % 864e5;
                // The hours, minutes, seconds, and milliseconds are obtained by
                // decomposing the time within the day. See section 15.9.1.10.
                hours = floor(time / 36e5) % 24;
                minutes = floor(time / 6e4) % 60;
                seconds = floor(time / 1e3) % 60;
                milliseconds = time % 1e3;
              } else {
                year = value.getUTCFullYear();
                month = value.getUTCMonth();
                date = value.getUTCDate();
                hours = value.getUTCHours();
                minutes = value.getUTCMinutes();
                seconds = value.getUTCSeconds();
                milliseconds = value.getUTCMilliseconds();
              }
              // Serialize extended years correctly.
              value = (year <= 0 || year >= 1e4 ? (year < 0 ? "-" : "+") + toPaddedString(6, year < 0 ? -year : year) : toPaddedString(4, year)) +
                "-" + toPaddedString(2, month + 1) + "-" + toPaddedString(2, date) +
                // Months, dates, hours, minutes, and seconds should have two
                // digits; milliseconds should have three.
                "T" + toPaddedString(2, hours) + ":" + toPaddedString(2, minutes) + ":" + toPaddedString(2, seconds) +
                // Milliseconds are optional in ES 5.0, but required in 5.1.
                "." + toPaddedString(3, milliseconds) + "Z";
            } else {
              value = null;
            }
          } else if (typeof value.toJSON == "function" && ((className != numberClass && className != stringClass && className != arrayClass) || isProperty.call(value, "toJSON"))) {
            // Prototype <= 1.6.1 adds non-standard `toJSON` methods to the
            // `Number`, `String`, `Date`, and `Array` prototypes. JSON 3
            // ignores all `toJSON` methods on these objects unless they are
            // defined directly on an instance.
            value = value.toJSON(property);
          }
        }
        if (callback) {
          // If a replacement function was provided, call it to obtain the value
          // for serialization.
          value = callback.call(object, property, value);
        }
        if (value === null) {
          return "null";
        }
        className = getClass.call(value);
        if (className == booleanClass) {
          // Booleans are represented literally.
          return "" + value;
        } else if (className == numberClass) {
          // JSON numbers must be finite. `Infinity` and `NaN` are serialized as
          // `"null"`.
          return value > -1 / 0 && value < 1 / 0 ? "" + value : "null";
        } else if (className == stringClass) {
          // Strings are double-quoted and escaped.
          return quote("" + value);
        }
        // Recursively serialize objects and arrays.
        if (typeof value == "object") {
          // Check for cyclic structures. This is a linear search; performance
          // is inversely proportional to the number of unique nested objects.
          for (length = stack.length; length--;) {
            if (stack[length] === value) {
              // Cyclic structures cannot be serialized by `JSON.stringify`.
              throw TypeError();
            }
          }
          // Add the object to the stack of traversed objects.
          stack.push(value);
          results = [];
          // Save the current indentation level and indent one additional level.
          prefix = indentation;
          indentation += whitespace;
          if (className == arrayClass) {
            // Recursively serialize array elements.
            for (index = 0, length = value.length; index < length; index++) {
              element = serialize(index, value, callback, properties, whitespace, indentation, stack);
              results.push(element === undef ? "null" : element);
            }
            result = results.length ? (whitespace ? "[\n" + indentation + results.join(",\n" + indentation) + "\n" + prefix + "]" : ("[" + results.join(",") + "]")) : "[]";
          } else {
            // Recursively serialize object members. Members are selected from
            // either a user-specified list of property names, or the object
            // itself.
            forEach(properties || value, function (property) {
              var element = serialize(property, value, callback, properties, whitespace, indentation, stack);
              if (element !== undef) {
                // According to ES 5.1 section 15.12.3: "If `gap` {whitespace}
                // is not the empty string, let `member` {quote(property) + ":"}
                // be the concatenation of `member` and the `space` character."
                // The "`space` character" refers to the literal space
                // character, not the `space` {width} argument provided to
                // `JSON.stringify`.
                results.push(quote(property) + ":" + (whitespace ? " " : "") + element);
              }
            });
            result = results.length ? (whitespace ? "{\n" + indentation + results.join(",\n" + indentation) + "\n" + prefix + "}" : ("{" + results.join(",") + "}")) : "{}";
          }
          // Remove the object from the traversed object stack.
          stack.pop();
          return result;
        }
      };

      // Public: `JSON.stringify`. See ES 5.1 section 15.12.3.
      JSON3.stringify = function (source, filter, width) {
        var whitespace, callback, properties, className;
        if (typeof filter == "function" || typeof filter == "object" && filter) {
          if ((className = getClass.call(filter)) == functionClass) {
            callback = filter;
          } else if (className == arrayClass) {
            // Convert the property names array into a makeshift set.
            properties = {};
            for (var index = 0, length = filter.length, value; index < length; value = filter[index++], ((className = getClass.call(value)), className == stringClass || className == numberClass) && (properties[value] = 1));
          }
        }
        if (width) {
          if ((className = getClass.call(width)) == numberClass) {
            // Convert the `width` to an integer and create a string containing
            // `width` number of space characters.
            if ((width -= width % 1) > 0) {
              for (whitespace = "", width > 10 && (width = 10); whitespace.length < width; whitespace += " ");
            }
          } else if (className == stringClass) {
            whitespace = width.length <= 10 ? width : width.slice(0, 10);
          }
        }
        // Opera <= 7.54u2 discards the values associated with empty string keys
        // (`""`) only if they are used directly within an object member list
        // (e.g., `!("" in { "": 1})`).
        return serialize("", (value = {}, value[""] = source, value), callback, properties, whitespace, "", []);
      };
    }

    // Public: Parses a JSON source string.
    if (!has("json-parse")) {
      var fromCharCode = String.fromCharCode;

      // Internal: A map of escaped control characters and their unescaped
      // equivalents.
      var Unescapes = {
        92: "\\",
        34: '"',
        47: "/",
        98: "\b",
        116: "\t",
        110: "\n",
        102: "\f",
        114: "\r"
      };

      // Internal: Stores the parser state.
      var Index, Source;

      // Internal: Resets the parser state and throws a `SyntaxError`.
      var abort = function() {
        Index = Source = null;
        throw SyntaxError();
      };

      // Internal: Returns the next token, or `"$"` if the parser has reached
      // the end of the source string. A token may be a string, number, `null`
      // literal, or Boolean literal.
      var lex = function () {
        var source = Source, length = source.length, value, begin, position, isSigned, charCode;
        while (Index < length) {
          charCode = source.charCodeAt(Index);
          switch (charCode) {
            case 9: case 10: case 13: case 32:
              // Skip whitespace tokens, including tabs, carriage returns, line
              // feeds, and space characters.
              Index++;
              break;
            case 123: case 125: case 91: case 93: case 58: case 44:
              // Parse a punctuator token (`{`, `}`, `[`, `]`, `:`, or `,`) at
              // the current position.
              value = charIndexBuggy ? source.charAt(Index) : source[Index];
              Index++;
              return value;
            case 34:
              // `"` delimits a JSON string; advance to the next character and
              // begin parsing the string. String tokens are prefixed with the
              // sentinel `@` character to distinguish them from punctuators and
              // end-of-string tokens.
              for (value = "@", Index++; Index < length;) {
                charCode = source.charCodeAt(Index);
                if (charCode < 32) {
                  // Unescaped ASCII control characters (those with a code unit
                  // less than the space character) are not permitted.
                  abort();
                } else if (charCode == 92) {
                  // A reverse solidus (`\`) marks the beginning of an escaped
                  // control character (including `"`, `\`, and `/`) or Unicode
                  // escape sequence.
                  charCode = source.charCodeAt(++Index);
                  switch (charCode) {
                    case 92: case 34: case 47: case 98: case 116: case 110: case 102: case 114:
                      // Revive escaped control characters.
                      value += Unescapes[charCode];
                      Index++;
                      break;
                    case 117:
                      // `\u` marks the beginning of a Unicode escape sequence.
                      // Advance to the first character and validate the
                      // four-digit code point.
                      begin = ++Index;
                      for (position = Index + 4; Index < position; Index++) {
                        charCode = source.charCodeAt(Index);
                        // A valid sequence comprises four hexdigits (case-
                        // insensitive) that form a single hexadecimal value.
                        if (!(charCode >= 48 && charCode <= 57 || charCode >= 97 && charCode <= 102 || charCode >= 65 && charCode <= 70)) {
                          // Invalid Unicode escape sequence.
                          abort();
                        }
                      }
                      // Revive the escaped character.
                      value += fromCharCode("0x" + source.slice(begin, Index));
                      break;
                    default:
                      // Invalid escape sequence.
                      abort();
                  }
                } else {
                  if (charCode == 34) {
                    // An unescaped double-quote character marks the end of the
                    // string.
                    break;
                  }
                  charCode = source.charCodeAt(Index);
                  begin = Index;
                  // Optimize for the common case where a string is valid.
                  while (charCode >= 32 && charCode != 92 && charCode != 34) {
                    charCode = source.charCodeAt(++Index);
                  }
                  // Append the string as-is.
                  value += source.slice(begin, Index);
                }
              }
              if (source.charCodeAt(Index) == 34) {
                // Advance to the next character and return the revived string.
                Index++;
                return value;
              }
              // Unterminated string.
              abort();
            default:
              // Parse numbers and literals.
              begin = Index;
              // Advance past the negative sign, if one is specified.
              if (charCode == 45) {
                isSigned = true;
                charCode = source.charCodeAt(++Index);
              }
              // Parse an integer or floating-point value.
              if (charCode >= 48 && charCode <= 57) {
                // Leading zeroes are interpreted as octal literals.
                if (charCode == 48 && ((charCode = source.charCodeAt(Index + 1)), charCode >= 48 && charCode <= 57)) {
                  // Illegal octal literal.
                  abort();
                }
                isSigned = false;
                // Parse the integer component.
                for (; Index < length && ((charCode = source.charCodeAt(Index)), charCode >= 48 && charCode <= 57); Index++);
                // Floats cannot contain a leading decimal point; however, this
                // case is already accounted for by the parser.
                if (source.charCodeAt(Index) == 46) {
                  position = ++Index;
                  // Parse the decimal component.
                  for (; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);
                  if (position == Index) {
                    // Illegal trailing decimal.
                    abort();
                  }
                  Index = position;
                }
                // Parse exponents. The `e` denoting the exponent is
                // case-insensitive.
                charCode = source.charCodeAt(Index);
                if (charCode == 101 || charCode == 69) {
                  charCode = source.charCodeAt(++Index);
                  // Skip past the sign following the exponent, if one is
                  // specified.
                  if (charCode == 43 || charCode == 45) {
                    Index++;
                  }
                  // Parse the exponential component.
                  for (position = Index; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);
                  if (position == Index) {
                    // Illegal empty exponent.
                    abort();
                  }
                  Index = position;
                }
                // Coerce the parsed value to a JavaScript number.
                return +source.slice(begin, Index);
              }
              // A negative sign may only precede numbers.
              if (isSigned) {
                abort();
              }
              // `true`, `false`, and `null` literals.
              if (source.slice(Index, Index + 4) == "true") {
                Index += 4;
                return true;
              } else if (source.slice(Index, Index + 5) == "false") {
                Index += 5;
                return false;
              } else if (source.slice(Index, Index + 4) == "null") {
                Index += 4;
                return null;
              }
              // Unrecognized token.
              abort();
          }
        }
        // Return the sentinel `$` character if the parser has reached the end
        // of the source string.
        return "$";
      };

      // Internal: Parses a JSON `value` token.
      var get = function (value) {
        var results, hasMembers;
        if (value == "$") {
          // Unexpected end of input.
          abort();
        }
        if (typeof value == "string") {
          if ((charIndexBuggy ? value.charAt(0) : value[0]) == "@") {
            // Remove the sentinel `@` character.
            return value.slice(1);
          }
          // Parse object and array literals.
          if (value == "[") {
            // Parses a JSON array, returning a new JavaScript array.
            results = [];
            for (;; hasMembers || (hasMembers = true)) {
              value = lex();
              // A closing square bracket marks the end of the array literal.
              if (value == "]") {
                break;
              }
              // If the array literal contains elements, the current token
              // should be a comma separating the previous element from the
              // next.
              if (hasMembers) {
                if (value == ",") {
                  value = lex();
                  if (value == "]") {
                    // Unexpected trailing `,` in array literal.
                    abort();
                  }
                } else {
                  // A `,` must separate each array element.
                  abort();
                }
              }
              // Elisions and leading commas are not permitted.
              if (value == ",") {
                abort();
              }
              results.push(get(value));
            }
            return results;
          } else if (value == "{") {
            // Parses a JSON object, returning a new JavaScript object.
            results = {};
            for (;; hasMembers || (hasMembers = true)) {
              value = lex();
              // A closing curly brace marks the end of the object literal.
              if (value == "}") {
                break;
              }
              // If the object literal contains members, the current token
              // should be a comma separator.
              if (hasMembers) {
                if (value == ",") {
                  value = lex();
                  if (value == "}") {
                    // Unexpected trailing `,` in object literal.
                    abort();
                  }
                } else {
                  // A `,` must separate each object member.
                  abort();
                }
              }
              // Leading commas are not permitted, object property names must be
              // double-quoted strings, and a `:` must separate each property
              // name and value.
              if (value == "," || typeof value != "string" || (charIndexBuggy ? value.charAt(0) : value[0]) != "@" || lex() != ":") {
                abort();
              }
              results[value.slice(1)] = get(lex());
            }
            return results;
          }
          // Unexpected token encountered.
          abort();
        }
        return value;
      };

      // Internal: Updates a traversed object member.
      var update = function(source, property, callback) {
        var element = walk(source, property, callback);
        if (element === undef) {
          delete source[property];
        } else {
          source[property] = element;
        }
      };

      // Internal: Recursively traverses a parsed JSON object, invoking the
      // `callback` function for each value. This is an implementation of the
      // `Walk(holder, name)` operation defined in ES 5.1 section 15.12.2.
      var walk = function (source, property, callback) {
        var value = source[property], length;
        if (typeof value == "object" && value) {
          // `forEach` can't be used to traverse an array in Opera <= 8.54
          // because its `Object#hasOwnProperty` implementation returns `false`
          // for array indices (e.g., `![1, 2, 3].hasOwnProperty("0")`).
          if (getClass.call(value) == arrayClass) {
            for (length = value.length; length--;) {
              update(value, length, callback);
            }
          } else {
            forEach(value, function (property) {
              update(value, property, callback);
            });
          }
        }
        return callback.call(source, property, value);
      };

      // Public: `JSON.parse`. See ES 5.1 section 15.12.2.
      JSON3.parse = function (source, callback) {
        var result, value;
        Index = 0;
        Source = "" + source;
        result = get(lex());
        // If a JSON string contains multiple tokens, it is invalid.
        if (lex() != "$") {
          abort();
        }
        // Reset the parser state.
        Index = Source = null;
        return callback && getClass.call(callback) == functionClass ? walk((value = {}, value[""] = result, value), "", callback) : result;
      };
    }
  }

  // Export for asynchronous module loaders.
  if (isLoader) {
    define(function () {
      return JSON3;
    });
  }
}(this));

},{}],47:[function(require,module,exports){
module.exports = toArray

function toArray(list, index) {
    var array = []

    index = index || 0

    for (var i = index || 0; i < list.length; i++) {
        array[i - index] = list[i]
    }

    return array
}

},{}]},{},[1])
(1)
});
;