(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);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.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){

function Rolling(value, frames)
{
  var lag = 0;
  
  if (!frames)
    frames = 24;
  
  this.value = value;
  
  Object.defineProperty(this, "lag", {
    get: function() { return lag; },
    enumerable: true
  });
  this.update = function() {
    var delta = this.value - lag;
    var dir = Math.sign(delta);
    var speed = Math.abs(delta) / frames;
    var mag = Math.min(Math.abs(speed), Math.abs(delta));
    
    lag += mag * dir;
    return lag;
  }
}

module.exports = Rolling;


},{}],2:[function(require,module,exports){
/* global $ */

var core = require("../game-core");
var client = require("../client");
var Rolling = require("./rolling");

var GRID_SIZE = core.GRID_SIZE;
var CELL_WIDTH = core.CELL_WIDTH;
var SPEED = core.SPEED;
var BORDER_WIDTH = core.BORDER_WIDTH;
var SHADOW_OFFSET = 5;
var ANIMATE_FRAMES = 24;
var BOUNCE_FRAMES = [8, 4];
var DROP_HEIGHT = 24;
var DROP_SPEED = 2;
var MIN_BAR_WIDTH = 65;
var BAR_HEIGHT = SHADOW_OFFSET + CELL_WIDTH;
var BAR_WIDTH = 400;


var canvas, canvasWidth, canvasHeight, gameWidth, gameHeight, ctx, offctx, offscreenCanvas;

$(function () {
  canvas = $("#main-ui")[0];
  ctx = canvas.getContext('2d');
  
  offscreenCanvas = document.createElement("canvas");
  offctx = offscreenCanvas.getContext('2d');
  
  canvas.style.marginTop = 10;
  updateSize();
});


var animateGrid, playerPortion, portionsRolling, 
  barProportionRolling,  animateTo, offset, user, zoom, showedDead;
var grid = client.grid;

function updateSize()
{
  var changed = false;
  if (canvasWidth != window.innerWidth)
  {
    gameWidth = canvasWidth = offscreenCanvas.width = canvas.width = window.innerWidth;
    changed = true;
  }
  
  if (canvasHeight != window.innerHeight - 20)
  {
    canvasHeight = offscreenCanvas.height = canvas.height = window.innerHeight - 20;
    gameHeight = canvasHeight - BAR_HEIGHT;
    changed = true;
  }
  
  if (changed && user)
    centerOnPlayer(user, offset);
}

function reset() {
  animateGrid = new core.Grid(GRID_SIZE);
  
  playerPortion = [];
  portionsRolling = [];
  barProportionRolling = [];
  
  animateTo = [0, 0];
  offset = [0, 0];
  
  user = null;
  zoom = 1;
  
  showedDead = false;
}

reset();

//Paint methods.
function paintGridBorder(ctx) 
{
  ctx.fillStyle = 'lightgray';
  var gridWidth = CELL_WIDTH * GRID_SIZE;

  ctx.fillRect(-BORDER_WIDTH, 0, BORDER_WIDTH, gridWidth);
  ctx.fillRect(-BORDER_WIDTH, -BORDER_WIDTH, gridWidth + BORDER_WIDTH * 2, BORDER_WIDTH);
  ctx.fillRect(gridWidth, 0, BORDER_WIDTH, gridWidth);
  ctx.fillRect(-BORDER_WIDTH, gridWidth, gridWidth + BORDER_WIDTH * 2, BORDER_WIDTH);
}

function paintGrid(ctx)
{
  //Paint background.
  ctx.fillStyle = "rgb(211, 225, 237)";
  ctx.fillRect(0, 0, CELL_WIDTH * GRID_SIZE, CELL_WIDTH * GRID_SIZE);
  
  paintGridBorder(ctx);
  //paintGridLines(ctx);
  
  //Get viewing limits
  var offsetX = (offset[0] - BORDER_WIDTH);
  var offsetY = (offset[1] - BORDER_WIDTH);
  
  var minRow = Math.max(Math.floor(offsetY / CELL_WIDTH), 0); 
  var minCol = Math.max(Math.floor(offsetX / CELL_WIDTH), 0); 
  var maxRow = Math.min(Math.ceil((offsetY + gameHeight / zoom) / CELL_WIDTH), grid.size); 
  var maxCol = Math.min(Math.ceil((offsetX + gameWidth / zoom) / CELL_WIDTH), grid.size); 
    
  //Paint occupied areas. (and fading ones).
  for (var r = minRow; r < maxRow; r++)
  {
    for (var c = minCol; c < maxCol; c++)
    {
      var p = grid.get(r, c);
      var x = c * CELL_WIDTH, y = r * CELL_WIDTH, baseColor, shadowColor;
      
      var animateSpec = animateGrid.get(r, c);
      if (client.allowAnimation && animateSpec)
      {
        if (animateSpec.before) //fading animation
        {
          var frac = (animateSpec.frame / ANIMATE_FRAMES);
          var back = new core.Color(.58, .41, .92, 1);
          baseColor = animateSpec.before.lightBaseColor.interpolateToString(back, frac);
          shadowColor = animateSpec.before.shadowColor.interpolateToString(back, frac);
        }
        else
          continue;
      } 
      else if (p)
      {
        baseColor = p.lightBaseColor;
        shadowColor = p.shadowColor;
      }
      else //No animation nor is this player owned. 
        continue;
      
      var hasBottom = !grid.isOutOfBounds(r + 1, c);
      var bottomAnimate = hasBottom && animateGrid.get(r + 1, c);
      var totalStatic = !bottomAnimate && !animateSpec;
      var bottomEmpty = totalStatic ? (hasBottom && !grid.get(r + 1, c)) :
        (!bottomAnimate || (bottomAnimate.after && bottomAnimate.before));
      if (hasBottom && ((!!bottomAnimate ^ !!animateSpec) || bottomEmpty))
      {
        
        ctx.fillStyle = shadowColor.rgbString();
        ctx.fillRect(x, y + CELL_WIDTH, CELL_WIDTH + 1, SHADOW_OFFSET);
      }
      ctx.fillStyle = baseColor.rgbString();
      ctx.fillRect(x, y, CELL_WIDTH + 1, CELL_WIDTH + 1);
    }
  }
  
  if (!client.allowAnimation)
    return;
  
  //Paint squares with drop in animation.
  for (var r = 0; r < grid.size; r++)
  {
    for (var c = 0; c < grid.size; c++)
    {
      animateSpec = animateGrid.get(r, c);
      x = c * CELL_WIDTH, y = r * CELL_WIDTH;
      
      if (animateSpec && client.allowAnimation) 
      {
        var viewable = r >= minRow && r < maxRow && c >= minCol && c < maxCol;
        if (animateSpec.after && viewable)
        {
          //Bouncing the squares.
          var offsetBounce = getBounceOffset(animateSpec.frame);
          y -= offsetBounce;
          
          shadowColor = animateSpec.after.shadowColor;
          baseColor = animateSpec.after.lightBaseColor.deriveLumination(-(offsetBounce / DROP_HEIGHT) * .1);
          
          ctx.fillStyle = shadowColor.rgbString();
          ctx.fillRect(x, y + CELL_WIDTH, CELL_WIDTH, SHADOW_OFFSET);
          ctx.fillStyle = baseColor.rgbString();
          ctx.fillRect(x, y, CELL_WIDTH + 1, CELL_WIDTH + 1);
        }
        
        animateSpec.frame++;
        if (animateSpec.frame >= ANIMATE_FRAMES)
          animateGrid.set(r, c, null);
      }
    }
  }
}


function paintUIBar(ctx)
{
  
  //UI Bar background
  ctx.fillStyle = "#24422c";
  ctx.fillRect(0, 0, canvasWidth, BAR_HEIGHT);
  
  var barOffset;
  ctx.fillStyle = "white";
  ctx.font = "24px Changa";
  barOffset = (user && user.name) ? (ctx.measureText(user.name).width + 20) : 0;
  ctx.fillText(user ? user.name : "", 5, CELL_WIDTH - 5);
  
  //Draw filled bar.
  ctx.fillStyle = "rgba(180, 180, 180, .3)";
  ctx.fillRect(barOffset, 0, BAR_WIDTH, BAR_HEIGHT);
  
  var userPortions = portionsRolling[user.num] ? portionsRolling[user.num].lag : 0;
  var barSize = Math.ceil((BAR_WIDTH - MIN_BAR_WIDTH) * userPortions + MIN_BAR_WIDTH);
  ctx.fillStyle = user ? user.baseColor.rgbString() : "";
  ctx.fillRect(barOffset, 0, barSize, CELL_WIDTH);
  ctx.fillStyle = user ? user.shadowColor.rgbString() : "";
  ctx.fillRect(barOffset, CELL_WIDTH, barSize, SHADOW_OFFSET);
  
  //TODO: dont reset kill count and zoom when we request frames.
  //Percentage
  ctx.fillStyle = "white";
  ctx.font = "18px Changa";
  ctx.fillText((userPortions * 100).toFixed(3) + "%", 5 + barOffset, CELL_WIDTH - 5);
  
  //Number of kills
  var killsText = "Kills: " + client.kills;
  var killsOffset = 20 + BAR_WIDTH + barOffset;
  ctx.fillText(killsText, killsOffset, CELL_WIDTH - 5);
  
  //Calcuate rank
  var sorted = [];
  client.getPlayers().forEach(function(val) {
    sorted.push({player: val, portion: playerPortion[val.num]});
  });
  sorted.sort(function(a, b) {
    if (a.portion === b.portion) return a.player.num - b.player.num;
    else return b.portion - a.portion;
  });
 
  var rank = sorted.findIndex(function(val) {return val.player === user});
  ctx.fillText("Rank: " + (rank === -1 ? "--" : rank + 1) + " of " + sorted.length, 
  ctx.measureText(killsText).width + killsOffset + 20, CELL_WIDTH - 5);
  
  //Rolling the leaderboard bars.
  if (sorted.length > 0)
  {
    var maxPortion = sorted[0].portion;
    client.getPlayers().forEach(function(player) {
      var rolling = barProportionRolling[player.num];
      rolling.value = playerPortion[player.num] / maxPortion;
      rolling.update();
    });
  }
  
  //Show leaderboard.
  var leaderboardNum = Math.min(5, sorted.length);
  for (var i = 0; i < leaderboardNum; i++)
  {
    var player = sorted[i].player;
    var name = player.name || "Unnamed";
    var portion = barProportionRolling[player.num].lag;
    
    var nameWidth = ctx.measureText(name).width;
    barSize = Math.ceil((BAR_WIDTH - MIN_BAR_WIDTH) * portion + MIN_BAR_WIDTH);
    var barX = canvasWidth - barSize;
    var barY = BAR_HEIGHT * (i + 1);
    var offset = i == 0 ? 10 : 0;
    
    ctx.fillStyle = 'rgba(10, 10, 10, .3)';
    ctx.fillRect(barX - 10, barY + 10 - offset, barSize + 10, BAR_HEIGHT + offset);
    ctx.fillStyle = player.baseColor.rgbString();
    ctx.fillRect(barX, barY, barSize, CELL_WIDTH);
    ctx.fillStyle = player.shadowColor.rgbString();
    ctx.fillRect(barX, barY + CELL_WIDTH, barSize, SHADOW_OFFSET);
    
    ctx.fillStyle = "black";
    ctx.fillText(name, barX - nameWidth - 15, barY + 27);
    
    var percentage = (portionsRolling[player.num].lag * 100).toFixed(3) + "%";
    ctx.fillStyle = "white";
    ctx.fillText(percentage, barX + 5, barY + CELL_WIDTH - 5);
  }
  
}

function paint(ctx)
{
  
  ctx.fillStyle = '#e2ebf3';  //'whitesmoke';
  ctx.fillRect(0, 0, canvasWidth, canvasHeight);
  
  //Move grid to viewport as said with the offsets, below the stats
  ctx.save();
  ctx.translate(0, BAR_HEIGHT);
  ctx.beginPath();
  ctx.rect(0, 0, gameWidth, gameHeight);
  ctx.clip();
  
  //Zoom in/out based on player stats.
  ctx.scale(zoom, zoom);
  ctx.translate(-offset[0] + BORDER_WIDTH, -offset[1] + BORDER_WIDTH);
  
  paintGrid(ctx);
  client.getPlayers().forEach(function (p) {
    var fr = p.waitLag;
    if (fr < ANIMATE_FRAMES)
      p.render(ctx, fr / ANIMATE_FRAMES);
    else
      p.render(ctx);
  });
  
  //Reset transform to paint fixed UI elements
  ctx.restore();
  paintUIBar(ctx);
  
  if ((!user || user.dead) && !showedDead)
  {
    showedDead = true;
    console.log("You died!");
    //return;
  }
}

function paintDoubleBuff()
{
  paint(offctx);
  ctx.drawImage(offscreenCanvas, 0, 0);
}

function update() {
  updateSize();
  
  //Change grid offsets.
  for (var i = 0; i <= 1; i++)
  {
    if (animateTo[i] !== offset[i])
    {
      if (client.allowAnimation)
      {
        var delta = animateTo[i] - offset[i];
        var dir = Math.sign(delta);
        var mag = Math.min(SPEED, Math.abs(delta));
        offset[i] += dir * mag;
      }
      else
        offset[i] = animateTo[i];
    }
  }
  
  //Calculate player portions.
  client.getPlayers().forEach(function(player) {
    var roll = portionsRolling[player.num];
    roll.value = playerPortion[player.num] / GRID_SIZE / GRID_SIZE;
    roll.update();
  });
  
  //Zoom goes from 1 to .5, decreasing as portion goes up. TODO: maybe can modify this?
  if (portionsRolling[user.num])
    zoom = 1 / (portionsRolling[user.num].lag + 1); 
  
  //TODO: animate player is dead. (maybe explosion?), and tail rewinds itself.
  if (user) centerOnPlayer(user, animateTo);
}

//Helper methods.
function centerOnPlayer(player, pos)
{
  var xOff = Math.floor(player.posX - (gameWidth / zoom - CELL_WIDTH) / 2);
  var yOff = Math.floor(player.posY - (gameHeight / zoom - CELL_WIDTH) / 2);
  var gridWidth = grid.size * CELL_WIDTH + BORDER_WIDTH * 2;
  pos[0] = xOff; //Math.max(Math.min(xOff, gridWidth + (BAR_WIDTH + 100) / zoom - gameWidth / zoom), 0);
  pos[1] = yOff; //Math.max(Math.min(yOff, gridWidth - gameHeight / zoom), 0);
}

function getBounceOffset(frame)
{
  var offsetBounce = ANIMATE_FRAMES;
  var bounceNum = BOUNCE_FRAMES.length - 1;
  while (bounceNum >= 0 && frame < offsetBounce - BOUNCE_FRAMES[bounceNum])
  {
    offsetBounce -= BOUNCE_FRAMES[bounceNum];
    bounceNum--;
  }
  
  if (bounceNum === -1)
  {
    return (offsetBounce - frame) * DROP_SPEED;
  }
  else
  {
    offsetBounce -= BOUNCE_FRAMES[bounceNum];
    frame = frame - offsetBounce;
    var midFrame = BOUNCE_FRAMES[bounceNum] / 2;
    if (frame >= midFrame)
      return (BOUNCE_FRAMES[bounceNum] - frame) * DROP_SPEED;
    else
      return frame * DROP_SPEED;
  }
}

function showStats() {
  //TODO: Show score stats.
  $("#begin").removeClass("hidden");
  $("#begin").animate({
    opacity: .9999
  }, 1000, function() {
    $("#stats").addClass("hidden").css("opacity", 0);
  });
}

module.exports = exports = {
  addPlayer: function(player) {
    playerPortion[player.num] = 0;
    portionsRolling[player.num] = new Rolling(9 / GRID_SIZE / GRID_SIZE, ANIMATE_FRAMES);
    barProportionRolling[player.num] = new Rolling(0, ANIMATE_FRAMES);
  },
  disconnect: function() {
    //Show score stats.
    $("#stats").removeClass("hidden");
    $("#stats").animate({
      opacity: .9999
    }, 3000, function() {
      showStats();
      //Then fade back into the login screen.
    });
  },
  removePlayer: function(player) {
    delete playerPortion[player.num];
    delete portionsRolling[player.num];
    delete barProportionRolling[player.num];
  },
  
  setUser: function(player) {
    user = player;
    centerOnPlayer(user, offset);
  },
  reset: reset,
  updateGrid: function(row, col, before, after) {
    //Keep track of areas.
    if (before)
      playerPortion[before.num]--;
    if (after)
      playerPortion[after.num]++;
      
    //Queue animation
    if (before === after || !client.allowAnimation)
      return;
    animateGrid.set(row, col, {
      before: before,
      after: after,
      frame: 0
    });
  },
  paint: paintDoubleBuff,
  update: update
};

},{"../client":3,"../game-core":9,"./rolling":1}],3:[function(require,module,exports){
var core = require('./game-core');
var Player = core.Player;

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

var GRID_SIZE = core.GRID_SIZE;
var CELL_WIDTH = core.CELL_WIDTH;

var running = false;
var user, socket, frame;
var players, allPlayers;

var kills;

var timeout = undefined;
var dirty = false;
var deadFrames = 0;
var requesting = -1; //frame that we are requesting at.
var frameCache = []; //Frames after our request.

var allowAnimation = true;

var grid = new core.Grid(core.GRID_SIZE, function(row, col, before, after) {
  invokeRenderer('updateGrid', [row, col, before, after]);
}); 

/**
 * Provides requestAnimationFrame in a cross browser way. (edited so that this is also compatible with node.)
 * @author paulirish / http://paulirish.com/
 */
// window.requestAnimationFrame = function( /* function FrameRequestCallback */ callback, /* DOMElement Element */ element ) {
//       window.setTimeout( callback, 1000 / 60 );
//     };

var hasWindow;
try {
  window.document;
  hasWindow = true;
} catch (e) {
  hasWindow = false;
}

var requestAnimationFrame;
if ( !requestAnimationFrame ) {
  requestAnimationFrame = ( function() {
    if (hasWindow) {
      return window.requestAnimationFrame ||
      window.webkitRequestAnimationFrame ||
      window.mozRequestAnimationFrame ||
      window.oRequestAnimationFrame ||
      window.msRequestAnimationFrame ||
      function( /* function FrameRequestCallback */ callback, /* DOMElement Element */ element ) {
        setTimeout( callback, 1000 / 60 );
      };
    } else {
      return function( /* function FrameRequestCallback */ callback, /* DOMElement Element */ element ) {
        setTimeout( callback, 1000 / 60 );
      };
    }
  })();
}

//Public API
function connectGame(url, name, callback) {
  if (running)
    return; //Prevent multiple runs.
  running = true;
  
  user = null;
  deadFrames = 0;
  
  //Socket connection.
  io.j = [];
  io.sockets = [];
  socket = io(url, {
    'forceNew': true,
    upgrade: false,
    transports: ['websocket']
  });
  socket.on('connect', function(){
    console.info('Connected to server.');
  });
  socket.on('game', function(data) {
    if (timeout != undefined)
      clearTimeout(timeout);
    
    //Initialize game.
    //TODO: display data.gameid --- game id #
    frame = data.frame;
    
    reset();
    
    //Load players.
    data.players.forEach(function(p) {
      var pl = new Player(grid, p);
      addPlayer(pl);
    });
    user = allPlayers[data.num];
    if (!user) 
      throw new Error();
    setUser(user);
    
    //Load grid.
    var gridData = new Uint8Array(data.grid);
    for (var r = 0; r < grid.size; r++)
      for (var c = 0; c < grid.size; c++)
      {
        var ind = gridData[r * grid.size + c] - 1;
        grid.set(r, c, ind === -1 ? null : players[ind]);
      }
    
    invokeRenderer('paint', []);
    frame = data.frame;
    
    if (requesting !== -1)
    {
      //Update those cache frames after we updated game.
      var minFrame = requesting;
      requesting = -1;
      while (frameCache.length > frame - minFrame)
        processFrame(frameCache[frame - minFrame]);
      frameCache = [];
    }
  });
  
  socket.on('notifyFrame', processFrame);
  
  socket.on('dead', function() {
    socket.disconnect(); //In case we didn't get the disconnect call.
  });
  
  socket.on('disconnect', function(){
    if (!user)
      return;
    console.info('Server has disconnected. Creating new game.');
    socket.disconnect();
    user.die();
    dirty = true;
    paintLoop();
    running = false;
    invokeRenderer('disconnect', []);
  });
  
  socket.emit('hello', {
    name: name,
    type: 0, //Free-for-all
    gameid: -1 //Requested game-id, or -1 for anyone.
  }, function(success, msg) {
    if (success) 
      console.info('Connected to game!');
    else {
      console.error('Unable to connect to game: ' + msg);
      running = false;
    }
    if (callback)
      callback(success, msg);
  });
  
  
}

function changeHeading(newHeading) {
  if (!user || user.dead)
    return;
  if (newHeading === user.currentHeading || ((newHeading % 2 === 0) ^ 
    (user.currentHeading % 2 === 0)))
  {
    //user.heading = newHeading;
    if (socket) {
      socket.emit('frame', {
        frame: frame,
        heading: newHeading
      }, function(success, msg) {
        if (!success)
          console.error(msg);
      });
    }
  }
}

function getUser() {
  return user;
}

function getOthers() {
  var ret = [];
  for (var p of players) {
    if (p !== user) {
      ret.push(p);
    }
  }
  return ret;
}

function getPlayers() {
  return players.slice();
}

//Private API
function addPlayer(player) {
  if (allPlayers[player.num])
    return; //Already added.
  allPlayers[player.num] = players[players.length] = player;
  invokeRenderer('addPlayer', [player]);
  return players.length - 1;
}

function invokeRenderer(name, args) {
  var renderer = exports.renderer;
  if (renderer && typeof renderer[name] === 'function')
    renderer[name].apply(exports, args);
}


function processFrame(data)
{
  if (timeout != undefined)
      clearTimeout(timeout);
    
  if (requesting !== -1 && requesting < data.frame)
  {
    frameCache.push(data);
    return;
  }
  
  if (data.frame - 1 !== frame)
  {
    console.error('Frames don\'t match up!');
    socket.emit('requestFrame'); //Restore data.
    requesting = data.frame;
    frameCache.push(data);
    return;
  }
  
  frame++;
  if (data.newPlayers)
  {
    data.newPlayers.forEach(function(p) {
      if (p.num === user.num)
        return;
      var pl = new Player(grid, p);
      addPlayer(pl);
      core.initPlayer(grid, pl);
    });
  }
  
  var found = new Array(players.length);
  data.moves.forEach(function(val, i) {
    var player = allPlayers[val.num];
    if (!player) return;
    if (val.left) player.die();
    found[i] = true;
    player.heading = val.heading;
  });
  for (var i = 0; i < players.length; i++)
  {
    //Implicitly leaving game.
    if (!found[i])
    {
      var player = players[i];
      player && player.die();
    }
  }
  
  update();
  
  var locs = {};
  for (var i = 0; i < players.length; i++)
  {
    var p = players[i];
    locs[p.num] = [p.posX, p.posY, p.waitLag];
  }
  
  /*
  socket.emit('verify', {
    frame: frame,
    locs: locs
  }, function(frame, success, adviceFix, msg) {
    if (!success && requesting === -1) 
    {
      console.error(frame + ': ' + msg);
      if (adviceFix)
        socket.emit('requestFrame');
    }
  }.bind(this, frame));
  */
  
  dirty = true;
  requestAnimationFrame(function() {
    paintLoop();
  });
  timeout = setTimeout(function() {
    console.warn('Server has timed-out. Disconnecting.');
    socket.disconnect();
  }, 3000);
}

function paintLoop()
{
  if (!dirty)
    return;
  invokeRenderer('paint', []);
  dirty = false;
  
  if (user && user.dead)
  {
    if (timeout)
      clearTimeout(timeout);
    if (deadFrames === 60) //One second of frame
    {
      var before =allowAnimation;
      allowAnimation = false;
      update();
      invokeRenderer('paint', []);
      allowAnimation = before;
      user = null;
      deadFrames = 0;
      return;
    }
    
    socket.disconnect();
    deadFrames++;
    dirty = true;
    update();
    requestAnimationFrame(paintLoop);
  }
}

function reset() {
  user = null;
  
  grid.reset();
  players = [];
  allPlayers = [];
  kills = 0;
  
  invokeRenderer('reset');
}

function setUser(player) {
  user = player;
  invokeRenderer('setUser', [player]);
}

function update() {
  var dead = [];
  core.updateFrame(grid, players, dead, function addKill(killer, other)
  {
    if (players[killer] === user && killer !== other)
      kills++;
  });
  dead.forEach(function(val) {
    console.log((val.name || 'Unnamed') + ' is dead');
    delete allPlayers[val.num];
    invokeRenderer('removePlayer', [val]);
  });
  
  invokeRenderer('update', [frame]);
}

//Export stuff
var funcs = [connectGame, changeHeading, getOthers, getPlayers, getUser];
funcs.forEach(function (f) {
  exports[f.name] = f;
});

exports.renderer = null;
Object.defineProperties(exports, {
  allowAnimation: {
    get: function() { return allowAnimation; },
    set: function(val) { allowAnimation = !!val; },
    enumerable: true
  },
  grid: {
    get: function() { return grid; },
    enumerable: true
  },
  kills: {
    get: function() { return kills; },
    enumerable: true
  }
});

},{"./game-core":9,"socket.io-client":44}],4:[function(require,module,exports){
/* global $ */
var client = require("./client");
var core = require("./game-core");
var io = require('socket.io-client');

var GRID_SIZE = core.GRID_SIZE;
var CELL_WIDTH = core.CELL_WIDTH;

client.allowAnimation = true;
client.renderer = require("./client-modes/user-mode");
  
/**
 * Provides requestAnimationFrame in a cross browser way. (edited so that this is also compatible with node.)
 * @author paulirish / http://paulirish.com/
 */
// window.requestAnimationFrame = function( /* function FrameRequestCallback */ callback, /* DOMElement Element */ element ) {
//       window.setTimeout( callback, 1000 / 60 );
//     };
var hasWindow;
try {
  window.document;
  hasWindow = true;
} catch (e) {
  hasWindow = false;
}

var requestAnimationFrame;
if ( !requestAnimationFrame ) {
  requestAnimationFrame = ( function() {
    if (hasWindow) {
      return window.requestAnimationFrame ||
      window.webkitRequestAnimationFrame ||
      window.mozRequestAnimationFrame ||
      window.oRequestAnimationFrame ||
      window.msRequestAnimationFrame ||
      function( /* function FrameRequestCallback */ callback, /* DOMElement Element */ element ) {
        setTimeout( callback, 1000 / 60 );
      };
    } else {
      return function( /* function FrameRequestCallback */ callback, /* DOMElement Element */ element ) {
        setTimeout( callback, 1000 / 60 );
      };
    }
  })();
}

function run() {
  client.connectGame('//' + window.location.hostname + ':8081', $('#name').val(), function(success, msg) {
    if (success) 
    {
      $("#begin").addClass("hidden");
      $("#begin").animate({
          opacity: 0
      }, 1000);
    }
    else 
    {
      var error = $("#error");
      error.text(msg);
    }
  });
}

$(function() {
  var error = $("#error");
  
  if (!window.WebSocket)
  {
    error.text("Your browser does not support WebSockets!");
    return;
  }
  
  error.text("Loading..."); //TODO: show loading screen.
  var success = false;
  var socket = io('http://' + window.location.hostname + ':8081', {
    'forceNew': true,
    upgrade: false,
    transports: ['websocket']
  });
  
  socket.on('connect_error', function() {
    if (!success)
      error.text("Cannot connect with server. This probably is due to misconfigured proxy server. (Try using a different browser)");
  });
  socket.emit("checkConn", function() {
    success = true;
    socket.disconnect();
  });
  setTimeout(function() {
    if (!success)
      error.text("Cannot connect with server. This probably is due to misconfigured proxy server. (Try using a different browser)");
    else
    {
      error.text("");
      $("input").keypress(function(evt) {
        if (evt.which === 13)
          requestAnimationFrame(run);
      });
      $("button").click(function(evt) {
        requestAnimationFrame(run);
      });
    }
  }, 2000);
});


//Event listeners
$(document).keydown(function(e) {
  var newHeading = -1;
  switch (e.which)
  {
    case 37: newHeading = 3; break; //LEFT
    case 38: newHeading = 0; break; //UP
    case 39: newHeading = 1; break; //RIGHT
    case 40: newHeading = 2; break; //DOWN
    default: return; //exit handler for other keys.
  }
  
  client.changeHeading(newHeading);
  e.preventDefault();
});

},{"./client":3,"./client-modes/user-mode":2,"./game-core":9,"socket.io-client":44}],5:[function(require,module,exports){


function Color(h, s, l, a)
{
  verifyRange(h, s, l);
  if (a === undefined) a = 1;
  else verifyRange(a);
  
  Object.defineProperties(this, {
    "hue": {value: h, enumerable: true},
    "sat": {value: s, enumerable: true},
    "lum": {value: l, enumerable: true},
    "alpha": {value: a, enumerable: true},
  });
}

Color.fromData = function(data) {
  return new Color(data.hue, data.sat, data.lum, data.alpha);
};

function verifyRange()
{
  for (var i = 0; i < arguments.length; i++)
  {
    if (arguments[i] < 0 || arguments[i] > 1)
      throw new RangeError("H, S, L, and A parameters must be between the range [0, 1]");
  }
}

Color.prototype.interpolateToString = function(color, amount)
{
  var rgbThis = hslToRgb(this.hue, this.sat, this.lum);
  var rgbThat = hslToRgb(color.hue, color.sat, color.lum);
  var rgb = [];
  
  for (var i = 0; i < 3; i++)
    rgb[i] = Math.floor((rgbThat[i] - rgbThis[i]) * amount + rgbThis[i]);
  return {rgbString: function() {return 'rgb(' + rgb[0] + ', ' + rgb[1] + ', ' + rgb[2] + ')'}};
}

Color.prototype.deriveLumination = function(amount)
{
  var lum = this.lum + amount;
  lum = Math.min(Math.max(lum, 0), 1);
  return new Color(this.hue, this.sat, lum, this.alpha);
};

Color.prototype.deriveHue = function(amount)
{
  var hue = this.hue - amount;
  return new Color(hue - Math.floor(hue), this.sat, this.lum, this.alpha);
};

Color.prototype.deriveSaturation = function(amount)
{
  var sat = this.sat + amount;
  sat = Math.min(Math.max(sat, 0), 1);
  return new Color(this.hue, sat, this.lum, this.alpha);
};

Color.prototype.deriveAlpha = function(newAlpha)
{
  verifyRange(newAlpha);
  return new Color(this.hue, this.sat, this.lum, newAlpha);
};

Color.prototype.rgbString = function() {
  var rgb = hslToRgb(this.hue, this.sat, this.lum);
  rgb[3] = this.a;
  return 'rgba(' + rgb[0] + ', ' + rgb[1] + ', ' + rgb[2] + ', ' + this.alpha + ')';
};


//http://stackoverflow.com/a/9493060/7344257
function hslToRgb(h, s, l){
  var r, g, b;

  if(s == 0){
    r = g = b = l; // achromatic
  }else{
    var hue2rgb = function hue2rgb(p, q, t){
      if(t < 0) t += 1;
      if(t > 1) t -= 1;
      if(t < 1/6) return p + (q - p) * 6 * t;
      if(t < 1/2) return q;
      if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
      return p;
    };

    var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
    var p = 2 * l - q;
    r = hue2rgb(p, q, h + 1/3);
    g = hue2rgb(p, q, h);
    b = hue2rgb(p, q, h - 1/3);
  }

  return [Math.round(r * 255), Math.round(g * 255), Math.round(b * 255)];
}

module.exports = Color;
},{}],6:[function(require,module,exports){
function constant(val) {
  return {
    value: val,
    enumerable: true
  };
}

var consts = {
  GRID_SIZE: constant(80),
  CELL_WIDTH: constant(40),
  SPEED: constant(5),
  BORDER_WIDTH: constant(20),
  MAX_PLAYERS: constant(81)
};

Object.defineProperties(module.exports, consts);

},{}],7:[function(require,module,exports){
var ANIMATE_FRAMES = 24;
var CELL_WIDTH = 40;

//TODO: remove constants.
exports.initPlayer = function(grid, player)
{
  for (var dr = -1; dr <= 1; dr++)
    for (var dc = -1; dc <= 1; dc++)
      if (!grid.isOutOfBounds(dr + player.row, dc + player.col))
        grid.set(dr + player.row, dc + player.col, player);
};
exports.updateFrame = function(grid, players, dead, notifyKill)
{
  var adead = [];
  if (dead instanceof Array)
    adead = dead;
  
  var kill;
  if (!notifyKill)
    kill = function() {};
  else
    kill = function(killer, other) {if (!removing[other]) notifyKill(killer, other);};
  
  //Move players.  
  var tmp = players.filter(function(val) {
    val.move();
    if (val.dead)
      adead.push(val);
    return !val.dead;
  });
  
  //Remove players with collisions.
  var removing = new Array(players.length);
  for (var i = 0; i < players.length; i++)
  {
    for (var j = i; j < players.length; j++)
    {
      
      //Remove those players when other players have hit their tail.
      if (!removing[j] && players[j].tail.hitsTail(players[i]))
      {
        kill(i, j);
        removing[j] = true;
        //console.log("TAIL");
      }
      if (!removing[i] && players[i].tail.hitsTail(players[j]))
      {
        kill(j, i);
        removing[i] = true;
        //console.log("TAIL");
      }
      
      //Remove players with collisons...
      if (i !== j && squaresIntersect(players[i].posX, players[j].posX) &&
        squaresIntersect(players[i].posY, players[j].posY))
      {
        //...if one player is own his own territory, the other is out.
        if (grid.get(players[i].row, players[i].col) === players[i])
        {
          kill(i, j);
          removing[j] = true;
        }
        else if (grid.get(players[j].row, players[j].col) === players[j])
        {
          kill(j, i);
          removing[i] = true;
        }
        else
        {
          //...otherwise, the one that sustains most of the collision will be removed.
          var areaI = area(players[i]);
          var areaJ = area(players[j]);
          
          if (areaI === areaJ)
          {
            kill(i, j);
            kill(j, i);
            removing[i] = removing[j] = true;
          }
          else if (areaI > areaJ)
          {
            kill(j, i);
            removing[i] = true;
          }
          else
          {
            kill(i, j);
            removing[j] = true;
          }
        }
      }
    }
  }
  
  tmp = tmp.filter(function(val, i) {
    if (removing[i])
    {
      adead.push(val);
      val.die();
    }
    return !removing[i];
  });
  players.length = tmp.length;
  for (var i = 0; i < tmp.length; i++)
    players[i] = tmp[i];
  
  //Remove dead squares.
  for (var r = 0; r < grid.size; r++)
  {
    for (var c = 0; c < grid.size; c++)
    {
      if (adead.indexOf(grid.get(r, c)) !== -1)
        grid.set(r, c, null);
    }
  }
};

function squaresIntersect(a, b)
{
  if (a < b)
    return b < a + CELL_WIDTH;
  else
    return a < b + CELL_WIDTH;
}

function area(player)
{
  var xDest = player.col * CELL_WIDTH;
  var yDest = player.row * CELL_WIDTH;
  
  if (player.posX === xDest)
    return Math.abs(player.posY - yDest);
  else
    return Math.abs(player.posX - xDest);
}
},{}],8:[function(require,module,exports){
function Grid(size, changeCallback)
{
  var grid = new Array(size);
  var modified = false;
  
  var data = {
    grid: grid,
    size: size
  };
  
  this.get = function(row, col)
  {
    if (isOutOfBounds(data, row, col))
      throw new RangeError("Row or Column value out of bounds");
    return grid[row] && grid[row][col];
  }
  this.set = function(row, col, value)
  {
    if (isOutOfBounds(data, row, col))
      throw new RangeError("Row or Column value out of bounds");
      
    if (!grid[row])
      grid[row] = new Array(size);
    var before = grid[row][col];
    grid[row][col] = value;
    
    if (typeof changeCallback === "function")
      changeCallback(row, col, before, value);
    
    modified = true;
    
    return before;
  }
  this.reset = function() {
    if (modified)
    {
      grid = new Array(size);
      modified = false;
    }
  }
  
  this.isOutOfBounds = isOutOfBounds.bind(this, data);
  
  Object.defineProperty(this, "size", {
    get: function() {return size; },
    enumerable: true
  });
  
}

function isOutOfBounds(data, row, col)
{
  return row < 0 || row >= data.size || col < 0 || col >= data.size;
}

module.exports = Grid;
},{}],9:[function(require,module,exports){
var core = require('./game-core');
var consts = require('./game-consts');

exports.Color = require('./color');
exports.Grid = require('./grid');
exports.Player = require('./player');

exports.initPlayer = core.initPlayer;
exports.updateFrame = core.updateFrame;

for (var prop in consts) {
  Object.defineProperty(exports, prop, {
    enumerable: true,
    value: consts[prop]
  });
}


},{"./color":5,"./game-consts":6,"./game-core":7,"./grid":8,"./player":10}],10:[function(require,module,exports){
var Stack = require("./stack");
var Color = require("./color");
var Grid = require("./grid.js");
var consts = require("./game-consts.js");

var GRID_SIZE = consts.GRID_SIZE;
var CELL_WIDTH = consts.CELL_WIDTH;
var NEW_PLAYER_LAG = 60; //wait for a second at least.

function defineGetter(getter) {
  return {
    get: getter,
    enumerable: true
  };
}

function defineInstanceMethods(thisobj, data /*, methods...*/)
{
  for (var i = 2; i < arguments.length; i++)
    thisobj[arguments[i].name] = arguments[i].bind(this, data);
}

function defineAccessorProperties(thisobj, data /*, names...*/)
{
  var descript = {};
  function getAt(name) { return function() {return data[name] } }
  for (var i = 2; i < arguments.length; i++)
    descript[arguments[i]] = defineGetter(getAt(arguments[i]));
  Object.defineProperties(thisobj, descript);
}

function TailMove(orientation)
{
  this.move = 1;
  Object.defineProperty(this, "orientation", {
    value: orientation,
    enumerable: true
  });
}

function Tail(player, sdata)
{
  var data = {
    tail: [],
    tailGrid: [],
    prev: null,
    startRow: 0,
    startCol: 0,
    prevRow: 0, 
    prevCol: 0,
    player: player
  };
  
  if (sdata)
  {
    data.startRow = data.prevRow = sdata.startRow || 0;
    data.startCol = data.prevCol = sdata.startCol || 0;
    sdata.tail.forEach(function(val) {
      addTail(data, val.orientation, val.move);
    });
  }
  data.grid = player.grid;
  
  defineInstanceMethods(this, data, addTail, hitsTail, fillTail, renderTail, reposition, serialData);
  Object.defineProperty(this, "moves", {
    get: function() {return data.tail.slice(0);},
    enumerable: true
  });
}

//Instance methods.
function serialData(data) {
  return {
    tail: data.tail,
    startRow: data.startRow,
    startCol: data.startCol
  };
}

function setTailGrid(data, tailGrid, r, c)
{
  if (!tailGrid[r])
    tailGrid[r] = [];
  tailGrid[r][c] = true;
}

function addTail(data, orientation, count)
{
  if (count === undefined)
    count = 1;
  if (!count || count < 0)
    return;
  
  var prev = data.prev;
  var r = data.prevRow, c = data.prevCol;
  if (data.tail.length === 0)
    setTailGrid(data, data.tailGrid, r, c);
  
  if (!prev || prev.orientation !== orientation)
  {
    prev = data.prev = new TailMove(orientation);
    data.tail.push(prev);
    prev.move += count - 1;
  }
  else
    prev.move += count;

  for (var i = 0; i < count; i++)
  {
    var pos = walk([data.prevRow, data.prevCol], null, orientation, 1);
    data.prevRow = pos[0];
    data.prevCol = pos[1];
    setTailGrid(data, data.tailGrid, pos[0], pos[1]);
  }
  
}

function reposition(data, row, col)
{
  data.prevRow = data.startRow = row;
  data.prevCol = data.startCol = col;
  data.prev = null;
  if (data.tail.length === 0)
    return;
  else 
  {
    var ret = data.tail;
    data.tail = [];
    data.tailGrid = [];
    return ret;
  }
}

/*
function render2(data, ctx)
{
  ctx.fillStyle = data.player.tailColor.rgbString();
  for (var r = 0; r < data.tailGrid.length; r++)
  {
    if (!data.tailGrid[r])
      continue;
    for (var c = 0; c < data.tailGrid[r].length; c++)
      if (data.tailGrid[r][c])
        ctx.fillRect(c * CELL_WIDTH, r * CELL_WIDTH, CELL_WIDTH, CELL_WIDTH);
  }
}
*/

//Helper methods.
function renderTail(data, ctx)
{
  if (data.tail.length === 0)
    return;
  
  ctx.fillStyle = data.player.tailColor.rgbString();
  
  var prevOrient = -1;
  var start = [data.startRow, data.startCol];
  
  //fillTailRect(ctx, start, start);
  data.tail.forEach(function(tail) {
    var negDir = tail.orientation === 0 || tail.orientation === 3;

    var back = start;
    if (!negDir)
      start = walk(start, null, tail.orientation, 1);
    var finish = walk(start, null, tail.orientation, tail.move - 1);
    
    if (tail.move > 1)
      fillTailRect(ctx, start, finish);
    if (prevOrient !== -1)
      //Draw folding triangle.
      renderCorner(ctx, back, prevOrient, tail.orientation);
    
    start = finish;
    if (negDir)
      walk(start, start, tail.orientation, 1);
    prevOrient = tail.orientation;
  });
  
  var curOrient = data.player.currentHeading;
  if (prevOrient === curOrient)
  {
    fillTailRect(ctx, start, start);
  }
  else
    renderCorner(ctx, start, prevOrient, curOrient);
}

function renderCorner(ctx, cornerStart, dir1, dir2)
{
  if (dir1 === 0 || dir2 === 0)
    walk(cornerStart, cornerStart, 2, 1);
  if (dir1 === 3 || dir2 === 3)
    walk(cornerStart, cornerStart, 1, 1);
  
  var a = walk(cornerStart, null, dir2, 1);
  var b = walk(a, null, dir1, 1);
  
  var triangle = new Path2D();
  triangle.moveTo(cornerStart[1] * CELL_WIDTH, cornerStart[0] * CELL_WIDTH);
  triangle.lineTo(a[1] * CELL_WIDTH, a[0] * CELL_WIDTH);
  triangle.lineTo(b[1] * CELL_WIDTH, b[0] * CELL_WIDTH);
  triangle.closePath();
  for (var i = 0; i < 2; i++)
    ctx.fill(triangle);
}

function walk(from, ret, orient, dist)
{
  ret = ret || [];
  ret[0] = from[0];
  ret[1] = from[1];
  switch (orient)
  {
    case 0: ret[0] -= dist; break; //UP
    case 1: ret[1] += dist; break; //RIGHT
    case 2: ret[0] += dist; break; //DOWN
    case 3: ret[1] -= dist; break; //LEFT
  }
  return ret;
}

function fillTailRect(ctx, start, end)
{
  var x = start[1] * CELL_WIDTH;
  var y = start[0] * CELL_WIDTH;
  var width = (end[1] - start[1]) * CELL_WIDTH;
  var height = (end[0] - start[0]) * CELL_WIDTH;
  
  if (width === 0)
    width += CELL_WIDTH;
  if (height === 0)
    height += CELL_WIDTH;
  
  if (width < 0)
  {
    x += width;
    width = -width;
  }
  if (height < 0)
  {
    y += height;
    height = -height;
  }
  ctx.fillRect(x, y, width, height);
}

function fillTail(data)
{
  if (data.tail.length === 0)
    return;
  
  function onTail(c) { return data.tailGrid[c[0]] && data.tailGrid[c[0]][c[1]]; }
  
  var grid = data.grid;
  var start = [data.startRow, data.startCol];
  var been = new Grid(grid.size);
  var coords = [];
  
  coords.push(start);
  while (coords.length > 0) //BFS for all tail spaces.
  {
    var coord = coords.shift();
    var r = coord[0];
    var c = coord[1];
    
    if (grid.isOutOfBounds(r, c))
      continue;
    
    if (been.get(r, c))
      continue;
    
    if (onTail(coord)) //on the tail.
    {
      been.set(r, c, true);
      grid.set(r, c, data.player);
      
      //Find all spots that this tail encloses.
      floodFill(data, grid, r + 1, c, been);
      floodFill(data, grid, r - 1, c, been);
      floodFill(data, grid, r, c + 1, been);
      floodFill(data, grid, r, c - 1, been);
      
      coords.push([r + 1, c]);
      coords.push([r - 1, c]);
      coords.push([r, c + 1]);
      coords.push([r, c - 1]);
    }
  }
}

function floodFill(data, grid, row, col, been)
{
  function onTail(c) { return data.tailGrid[c[0]] && data.tailGrid[c[0]][c[1]]; }
  
  var start = [row, col];
  if (grid.isOutOfBounds(row, col) || been.get(row, col) || onTail(start) || grid.get(row, col) === data.player)
      return; //Avoid allocating too many resources.
  
  var coords = [];
  var filled = new Stack(GRID_SIZE * GRID_SIZE + 1);
  var surrounded = true;
  
  coords.push(start);
  while (coords.length > 0)
  {
    var coord = coords.shift();
    var r = coord[0];
    var c = coord[1];
    
    if (grid.isOutOfBounds(r, c))
    {
      surrounded = false;
      continue;
    }
    
    //End this traverse on boundaries (where we been, on the tail, and when we enter our territory)
    if (been.get(r, c) || onTail(coord) || grid.get(r, c) === data.player)
      continue;
      
    been.set(r, c, true);
    
    if (surrounded)
      filled.push(coord);
    
    coords.push([r + 1, c]);
    coords.push([r - 1, c]);
    coords.push([r, c + 1]);
    coords.push([r, c - 1]);
  }
  if (surrounded)
  {
    while (!filled.isEmpty())
    {
      coord = filled.pop();
      grid.set(coord[0], coord[1], data.player);
    }
  }
  
  return surrounded;
}

function hitsTail(data, other)
{
  return (data.prevRow !== other.row || data.prevCol !== other.col) &&
        (data.startRow !== other.row || data.startCol !== other.col) && 
    !!(data.tailGrid[other.row] && data.tailGrid[other.row][other.col]);
}

var SPEED = 5;
var SHADOW_OFFSET = 10;

function Player(grid, sdata) {
  var data = {};
  
  //Parameters
  data.num = sdata.num;
  data.name = sdata.name || ""; //|| "Player " + (data.num + 1);
  data.grid = grid;
  data.posX = sdata.posX;
  data.posY = sdata.posY;
  this.heading = data.currentHeading = sdata.currentHeading; //0 is up, 1 is right, 2 is down, 3 is left.
  data.waitLag = sdata.waitLag || 0;
  data.dead = false;
  
  //Only need colors for client side.
  var base;
  if (sdata.base)
    base = this.baseColor = sdata.base instanceof Color ? sdata.base : Color.fromData(sdata.base);
  else
  {
    var hue = Math.random();
    this.baseColor = base = new Color(hue, .8, .5);
  }
  this.lightBaseColor = base.deriveLumination(.1);
  this.shadowColor = base.deriveLumination(-.3);
  this.tailColor = base.deriveLumination(.3).deriveAlpha(.5);
  
  //Tail requires special handling.
  this.grid = grid; //Temporary
  if (sdata.tail) 
    data.tail = new Tail(this, sdata.tail);
  else 
  {
    data.tail = new Tail(this);
    data.tail.reposition(calcRow(data), calcCol(data));
  }
  
  //Instance methods.
  this.move = move.bind(this, data);
  this.die = function() { data.dead = true;};
  this.serialData = function() {
    return {
      base: this.baseColor,
      num: data.num,
      name: data.name,
      posX: data.posX,
      posY: data.posY,
      currentHeading: data.currentHeading,
      tail: data.tail.serialData(),
      waitLag: data.waitLag
    };
  };
  
  //Read-only Properties.
  defineAccessorProperties(this, data, "currentHeading", "dead", "name", "num", "posX", "posY", "grid", "tail", "waitLag");
  Object.defineProperties(this, {
    row: defineGetter(function() { return calcRow(data); }),
    col: defineGetter(function() { return calcCol(data); })
  });
}

//Gets the next integer in positive or negative direction.
function nearestInteger(positive, val)
{
  return positive ? Math.ceil(val) : Math.floor(val);
}

function calcRow(data)
{
  return nearestInteger(data.currentHeading === 2 /*DOWN*/, data.posY / CELL_WIDTH);
}

function calcCol(data)
{
  return nearestInteger(data.currentHeading === 1 /*RIGHT*/, data.posX / CELL_WIDTH);
}

//Instance methods
Player.prototype.render = function(ctx, fade)
{
  //Render tail.
  this.tail.renderTail(ctx);
  
  //Render player.
  fade = fade || 1;
  ctx.fillStyle = this.shadowColor.deriveAlpha(fade).rgbString();
  ctx.fillRect(this.posX, this.posY, CELL_WIDTH, CELL_WIDTH);
  
  var mid = CELL_WIDTH / 2;
  var grd = ctx.createRadialGradient(this.posX + mid, this.posY + mid - SHADOW_OFFSET, 1,
            this.posX + mid, this.posY + mid - SHADOW_OFFSET, CELL_WIDTH);
  grd.addColorStop(0, this.baseColor.deriveAlpha(fade).rgbString());
  grd.addColorStop(1, new Color(0, 0, 1, fade).rgbString());
  ctx.fillStyle = grd;
  ctx.fillRect(this.posX - 1, this.posY - SHADOW_OFFSET, CELL_WIDTH + 2, CELL_WIDTH);
  
  //Render name
  ctx.fillStyle = this.shadowColor.deriveAlpha(fade).rgbString();
  ctx.textAlign = "center";
  
  var yoff = -SHADOW_OFFSET * 2;
  if (this.row === 0)
    yoff = SHADOW_OFFSET * 2 + CELL_WIDTH;
  ctx.font = "18px Changa";
  ctx.fillText(this.name, this.posX + CELL_WIDTH / 2, this.posY + yoff);
};


function move(data)
{
  if (data.waitLag < NEW_PLAYER_LAG)
  {
    data.waitLag++;
    return;
  }
  
  //Move to new position.
  var heading = this.heading;
  if (this.posX % CELL_WIDTH !== 0 || this.posY % CELL_WIDTH !== 0)
    heading = data.currentHeading;
  else 
    data.currentHeading = heading;
  switch (heading)
  {
    case 0: data.posY -= SPEED; break; //UP
    case 1: data.posX += SPEED; break; //RIGHT
    case 2: data.posY += SPEED; break; //DOWN
    case 3: data.posX -= SPEED; break; //LEFT
  }
  
  //Check for out of bounds.
  var row = this.row, col = this.col;
  if (data.grid.isOutOfBounds(row, col))
  {
    data.dead = true;
    return;
  }
  
  //Update tail position.
  if (data.grid.get(row, col) === this)
  {
    //Safe zone!
    this.tail.fillTail();
    this.tail.reposition(row, col);
  }
  //If we are completely in a new cell (not in our safe zone), we add to the tail.
  else if (this.posX % CELL_WIDTH === 0 && this.posY % CELL_WIDTH === 0)
    this.tail.addTail(heading);
}

module.exports = Player;

},{"./color":5,"./game-consts.js":6,"./grid.js":8,"./stack":11}],11:[function(require,module,exports){


function Stack(initSize)
{
  var len = 0;
  var arr = [];
  
  this.ensureCapacity = function(size)
  {
    arr.length = Math.max(arr.length, size || 0);
  };
  
  this.push = function(ele)
  {
    this[len] = ele;
    len++;
  };
  
  this.pop = function()
  {
    if (len === 0)
      return;
    len--;
    var tmp = this[len];
    this[len] = undefined;
    return tmp;
  };
  
  this.isEmpty = function() {
    return len === 0;
  }
  
  this.ensureCapacity(initSize);
  
  
  Object.defineProperty(this, "length", {
    get: function() {return len;}
  });
}

module.exports = Stack;
},{}],12:[function(require,module,exports){
module.exports = after

function after(count, callback, err_cb) {
    var bail = false
    err_cb = err_cb || noop
    proxy.count = count

    return (count === 0) ? callback() : proxy

    function proxy(err, result) {
        if (proxy.count <= 0) {
            throw new Error('after called too many times')
        }
        --proxy.count

        // after first error, rest are passed to err_cb
        if (err) {
            bail = true
            callback(err)
            // future error callbacks will go to error handler
            callback = err_cb
        } else if (proxy.count === 0 && !bail) {
            callback(null, result)
        }
    }
}

function noop() {}

},{}],13:[function(require,module,exports){
/**
 * An abstraction for slicing an arraybuffer even when
 * ArrayBuffer.prototype.slice is not supported
 *
 * @api public
 */

module.exports = function(arraybuffer, start, end) {
  var bytes = arraybuffer.byteLength;
  start = start || 0;
  end = end || bytes;

  if (arraybuffer.slice) { return arraybuffer.slice(start, end); }

  if (start < 0) { start += bytes; }
  if (end < 0) { end += bytes; }
  if (end > bytes) { end = bytes; }

  if (start >= bytes || start >= end || bytes === 0) {
    return new ArrayBuffer(0);
  }

  var abv = new Uint8Array(arraybuffer);
  var result = new Uint8Array(end - start);
  for (var i = start, ii = 0; i < end; i++, ii++) {
    result[ii] = abv[i];
  }
  return result.buffer;
};

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

/**
 * Expose `Backoff`.
 */

module.exports = Backoff;

/**
 * Initialize backoff timer with `opts`.
 *
 * - `min` initial timeout in milliseconds [100]
 * - `max` max timeout [10000]
 * - `jitter` [0]
 * - `factor` [2]
 *
 * @param {Object} opts
 * @api public
 */

function Backoff(opts) {
  opts = opts || {};
  this.ms = opts.min || 100;
  this.max = opts.max || 10000;
  this.factor = opts.factor || 2;
  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;
  this.attempts = 0;
}

/**
 * Return the backoff duration.
 *
 * @return {Number}
 * @api public
 */

Backoff.prototype.duration = function(){
  var ms = this.ms * Math.pow(this.factor, this.attempts++);
  if (this.jitter) {
    var rand =  Math.random();
    var deviation = Math.floor(rand * this.jitter * ms);
    ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;
  }
  return Math.min(ms, this.max) | 0;
};

/**
 * Reset the number of attempts.
 *
 * @api public
 */

Backoff.prototype.reset = function(){
  this.attempts = 0;
};

/**
 * Set the minimum duration
 *
 * @api public
 */

Backoff.prototype.setMin = function(min){
  this.ms = min;
};

/**
 * Set the maximum duration
 *
 * @api public
 */

Backoff.prototype.setMax = function(max){
  this.max = max;
};

/**
 * Set the jitter
 *
 * @api public
 */

Backoff.prototype.setJitter = function(jitter){
  this.jitter = jitter;
};


},{}],15:[function(require,module,exports){
/*
 * base64-arraybuffer
 * https://github.com/niklasvh/base64-arraybuffer
 *
 * Copyright (c) 2012 Niklas von Hertzen
 * Licensed under the MIT license.
 */
(function(){
  "use strict";

  var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

  // Use a lookup table to find the index.
  var lookup = new Uint8Array(256);
  for (var i = 0; i < chars.length; i++) {
    lookup[chars.charCodeAt(i)] = i;
  }

  exports.encode = function(arraybuffer) {
    var bytes = new Uint8Array(arraybuffer),
    i, len = bytes.length, base64 = "";

    for (i = 0; i < len; i+=3) {
      base64 += chars[bytes[i] >> 2];
      base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];
      base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];
      base64 += chars[bytes[i + 2] & 63];
    }

    if ((len % 3) === 2) {
      base64 = base64.substring(0, base64.length - 1) + "=";
    } else if (len % 3 === 1) {
      base64 = base64.substring(0, base64.length - 2) + "==";
    }

    return base64;
  };

  exports.decode =  function(base64) {
    var bufferLength = base64.length * 0.75,
    len = base64.length, i, p = 0,
    encoded1, encoded2, encoded3, encoded4;

    if (base64[base64.length - 1] === "=") {
      bufferLength--;
      if (base64[base64.length - 2] === "=") {
        bufferLength--;
      }
    }

    var arraybuffer = new ArrayBuffer(bufferLength),
    bytes = new Uint8Array(arraybuffer);

    for (i = 0; i < len; i+=4) {
      encoded1 = lookup[base64.charCodeAt(i)];
      encoded2 = lookup[base64.charCodeAt(i+1)];
      encoded3 = lookup[base64.charCodeAt(i+2)];
      encoded4 = lookup[base64.charCodeAt(i+3)];

      bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);
      bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);
      bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);
    }

    return arraybuffer;
  };
})();

},{}],16:[function(require,module,exports){
(function (global){
/**
 * Create a blob builder even when vendor prefixes exist
 */

var BlobBuilder = global.BlobBuilder
  || global.WebKitBlobBuilder
  || global.MSBlobBuilder
  || global.MozBlobBuilder;

/**
 * Check if Blob constructor is supported
 */

var blobSupported = (function() {
  try {
    var a = new Blob(['hi']);
    return a.size === 2;
  } catch(e) {
    return false;
  }
})();

/**
 * Check if Blob constructor supports ArrayBufferViews
 * Fails in Safari 6, so we need to map to ArrayBuffers there.
 */

var blobSupportsArrayBufferView = blobSupported && (function() {
  try {
    var b = new Blob([new Uint8Array([1,2])]);
    return b.size === 2;
  } catch(e) {
    return false;
  }
})();

/**
 * Check if BlobBuilder is supported
 */

var blobBuilderSupported = BlobBuilder
  && BlobBuilder.prototype.append
  && BlobBuilder.prototype.getBlob;

/**
 * Helper function that maps ArrayBufferViews to ArrayBuffers
 * Used by BlobBuilder constructor and old browsers that didn't
 * support it in the Blob constructor.
 */

function mapArrayBufferViews(ary) {
  for (var i = 0; i < ary.length; i++) {
    var chunk = ary[i];
    if (chunk.buffer instanceof ArrayBuffer) {
      var buf = chunk.buffer;

      // if this is a subarray, make a copy so we only
      // include the subarray region from the underlying buffer
      if (chunk.byteLength !== buf.byteLength) {
        var copy = new Uint8Array(chunk.byteLength);
        copy.set(new Uint8Array(buf, chunk.byteOffset, chunk.byteLength));
        buf = copy.buffer;
      }

      ary[i] = buf;
    }
  }
}

function BlobBuilderConstructor(ary, options) {
  options = options || {};

  var bb = new BlobBuilder();
  mapArrayBufferViews(ary);

  for (var i = 0; i < ary.length; i++) {
    bb.append(ary[i]);
  }

  return (options.type) ? bb.getBlob(options.type) : bb.getBlob();
};

function BlobConstructor(ary, options) {
  mapArrayBufferViews(ary);
  return new Blob(ary, options || {});
};

module.exports = (function() {
  if (blobSupported) {
    return blobSupportsArrayBufferView ? global.Blob : BlobConstructor;
  } else if (blobBuilderSupported) {
    return BlobBuilderConstructor;
  } else {
    return undefined;
  }
})();

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],17:[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)));
  }
};

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

/**
 * 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 =
Emitter.prototype.addEventListener = 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);
  }

  on.fn = fn;
  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 =
Emitter.prototype.removeEventListener = 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 cb;
  for (var i = 0; i < callbacks.length; i++) {
    cb = callbacks[i];
    if (cb === fn || cb.fn === fn) {
      callbacks.splice(i, 1);
      break;
    }
  }
  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;
};

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

module.exports = function(a, b){
  var fn = function(){};
  fn.prototype = b.prototype;
  a.prototype = new fn;
  a.prototype.constructor = a;
};
},{}],20:[function(require,module,exports){

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

},{"./lib/index":21}],21:[function(require,module,exports){

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

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

},{"./socket":22,"engine.io-parser":34}],22:[function(require,module,exports){
(function (global){
/**
 * Module dependencies.
 */

var transports = require('./transports/index');
var Emitter = require('component-emitter');
var debug = require('debug')('engine.io-client:socket');
var index = require('indexof');
var parser = require('engine.io-parser');
var parseuri = require('parseuri');
var parsejson = require('parsejson');
var parseqs = require('parseqs');

/**
 * Module exports.
 */

module.exports = Socket;

/**
 * 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 (uri && 'object' === typeof uri) {
    opts = uri;
    uri = null;
  }

  if (uri) {
    uri = parseuri(uri);
    opts.hostname = uri.host;
    opts.secure = uri.protocol === 'https' || uri.protocol === 'wss';
    opts.port = uri.port;
    if (uri.query) opts.query = uri.query;
  } else if (opts.host) {
    opts.hostname = parseuri(opts.host).host;
  }

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

  if (opts.hostname && !opts.port) {
    // if no port is specified manually, use the protocol default
    opts.port = this.secure ? '443' : '80';
  }

  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 = parseqs.decode(this.query);
  this.upgrade = false !== opts.upgrade;
  this.path = (opts.path || '/engine.io').replace(/\/$/, '') + '/';
  this.forceJSONP = !!opts.forceJSONP;
  this.jsonp = false !== opts.jsonp;
  this.forceBase64 = !!opts.forceBase64;
  this.enablesXDR = !!opts.enablesXDR;
  this.timestampParam = opts.timestampParam || 't';
  this.timestampRequests = opts.timestampRequests;
  this.transports = opts.transports || ['polling', 'websocket'];
  this.readyState = '';
  this.writeBuffer = [];
  this.prevBufferLen = 0;
  this.policyPort = opts.policyPort || 843;
  this.rememberUpgrade = opts.rememberUpgrade || false;
  this.binaryType = null;
  this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades;
  this.perMessageDeflate = false !== opts.perMessageDeflate ? (opts.perMessageDeflate || {}) : false;

  if (true === this.perMessageDeflate) this.perMessageDeflate = {};
  if (this.perMessageDeflate && null == this.perMessageDeflate.threshold) {
    this.perMessageDeflate.threshold = 1024;
  }

  // SSL options for Node.js client
  this.pfx = opts.pfx || null;
  this.key = opts.key || null;
  this.passphrase = opts.passphrase || null;
  this.cert = opts.cert || null;
  this.ca = opts.ca || null;
  this.ciphers = opts.ciphers || null;
  this.rejectUnauthorized = opts.rejectUnauthorized === undefined ? null : opts.rejectUnauthorized;
  this.forceNode = !!opts.forceNode;

  // other options for Node.js client
  var freeGlobal = typeof global === 'object' && global;
  if (freeGlobal.global === freeGlobal) {
    if (opts.extraHeaders && Object.keys(opts.extraHeaders).length > 0) {
      this.extraHeaders = opts.extraHeaders;
    }

    if (opts.localAddress) {
      this.localAddress = opts.localAddress;
    }
  }

  // set on handshake
  this.id = null;
  this.upgrades = null;
  this.pingInterval = null;
  this.pingTimeout = null;

  // set on heartbeat
  this.pingIntervalTimer = null;
  this.pingTimeoutTimer = null;

  this.open();
}

Socket.priorWebsocketSuccess = false;

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

Emitter(Socket.prototype);

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

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

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

Socket.Socket = Socket;
Socket.Transport = require('./transport');
Socket.transports = require('./transports/index');
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,
    jsonp: this.jsonp,
    forceBase64: this.forceBase64,
    enablesXDR: this.enablesXDR,
    timestampRequests: this.timestampRequests,
    timestampParam: this.timestampParam,
    policyPort: this.policyPort,
    socket: this,
    pfx: this.pfx,
    key: this.key,
    passphrase: this.passphrase,
    cert: this.cert,
    ca: this.ca,
    ciphers: this.ciphers,
    rejectUnauthorized: this.rejectUnauthorized,
    perMessageDeflate: this.perMessageDeflate,
    extraHeaders: this.extraHeaders,
    forceNode: this.forceNode,
    localAddress: this.localAddress
  });

  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 () {
  var transport;
  if (this.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf('websocket') !== -1) {
    transport = 'websocket';
  } else if (0 === this.transports.length) {
    // Emit error on next tick so it can be listened to
    var self = this;
    setTimeout(function () {
      self.emit('error', 'No transports available');
    }, 0);
    return;
  } else {
    transport = this.transports[0];
  }
  this.readyState = 'opening';

  // Retry with the next transport if the transport is disabled (jsonp: false)
  try {
    transport = this.createTransport(transport);
  } catch (e) {
    this.transports.shift();
    this.open();
    return;
  }

  transport.open();
  this.setTransport(transport);
};

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

Socket.prototype.setTransport = function (transport) {
  debug('setting transport %s', transport.name);
  var self = this;

  if (this.transport) {
    debug('clearing existing transport %s', this.transport.name);
    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 });
  var failed = false;
  var self = this;

  Socket.priorWebsocketSuccess = false;

  function onTransportOpen () {
    if (self.onlyBinaryUpgrades) {
      var upgradeLosesBinary = !this.supportsBinary && self.transport.supportsBinary;
      failed = failed || upgradeLosesBinary;
    }
    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);
        if (!transport) return;
        Socket.priorWebsocketSuccess = 'websocket' === transport.name;

        debug('pausing current transport "%s"', self.transport.name);
        self.transport.pause(function () {
          if (failed) return;
          if ('closed' === self.readyState) return;
          debug('changing transport and sending upgrade packet');

          cleanup();

          self.setTransport(transport);
          transport.send([{ type: 'upgrade' }]);
          self.emit('upgrade', transport);
          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('upgradeError', err);
      }
    });
  }

  function freezeTransport () {
    if (failed) return;

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

    cleanup();

    transport.close();
    transport = null;
  }

  // Handle any error that happens while probing
  function onerror (err) {
    var error = new Error('probe error: ' + err);
    error.transport = transport.name;

    freezeTransport();

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

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

  function onTransportClose () {
    onerror('transport closed');
  }

  // When the socket is closed while we're probing
  function onclose () {
    onerror('socket closed');
  }

  // When the socket is upgraded while we're probing
  function onupgrade (to) {
    if (transport && to.name !== transport.name) {
      debug('"%s" works - aborting "%s"', to.name, transport.name);
      freezeTransport();
    }
  }

  // Remove all listeners on the transport and on self
  function cleanup () {
    transport.removeListener('open', onTransportOpen);
    transport.removeListener('error', onerror);
    transport.removeListener('close', onTransportClose);
    self.removeListener('close', onclose);
    self.removeListener('upgrading', onupgrade);
  }

  transport.once('open', onTransportOpen);
  transport.once('error', onerror);
  transport.once('close', onTransportClose);

  this.once('close', onclose);
  this.once('upgrading', onupgrade);

  transport.open();
};

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

Socket.prototype.onOpen = function () {
  debug('socket open');
  this.readyState = 'open';
  Socket.priorWebsocketSuccess = 'websocket' === this.transport.name;
  this.emit('open');
  this.flush();

  // we check for `readyState` in case an `open`
  // listener already 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 ||
      'closing' === 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(parsejson(packet.data));
        break;

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

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

      case 'message':
        this.emit('data', packet.data);
        this.emit('message', packet.data);
        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();
  // In case open handler closes socket
  if ('closed' === this.readyState) return;
  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 private
*/

Socket.prototype.ping = function () {
  var self = this;
  this.sendPacket('ping', function () {
    self.emit('ping');
  });
};

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

Socket.prototype.onDrain = function () {
  this.writeBuffer.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 (0 === this.writeBuffer.length) {
    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.
 * @param {Object} options.
 * @return {Socket} for chaining.
 * @api public
 */

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

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

Socket.prototype.sendPacket = function (type, data, options, fn) {
  if ('function' === typeof data) {
    fn = data;
    data = undefined;
  }

  if ('function' === typeof options) {
    fn = options;
    options = null;
  }

  if ('closing' === this.readyState || 'closed' === this.readyState) {
    return;
  }

  options = options || {};
  options.compress = false !== options.compress;

  var packet = {
    type: type,
    data: data,
    options: options
  };
  this.emit('packetCreate', packet);
  this.writeBuffer.push(packet);
  if (fn) this.once('flush', fn);
  this.flush();
};

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

Socket.prototype.close = function () {
  if ('opening' === this.readyState || 'open' === this.readyState) {
    this.readyState = 'closing';

    var self = this;

    if (this.writeBuffer.length) {
      this.once('drain', function () {
        if (this.upgrading) {
          waitForUpgrade();
        } else {
          close();
        }
      });
    } else if (this.upgrading) {
      waitForUpgrade();
    } else {
      close();
    }
  }

  function close () {
    self.onClose('forced close');
    debug('socket closing - telling transport to close');
    self.transport.close();
  }

  function cleanupAndClose () {
    self.removeListener('upgrade', cleanupAndClose);
    self.removeListener('upgradeError', cleanupAndClose);
    close();
  }

  function waitForUpgrade () {
    // wait for upgrade to finish since we can't send packets while pausing a transport
    self.once('upgrade', cleanupAndClose);
    self.once('upgradeError', cleanupAndClose);
  }

  return this;
};

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

Socket.prototype.onError = function (err) {
  debug('socket error %j', err);
  Socket.priorWebsocketSuccess = false;
  this.emit('error', 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 || 'closing' === this.readyState) {
    debug('socket close with reason: "%s"', reason);
    var self = this;

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

    // stop event from firing again for transport
    this.transport.removeAllListeners('close');

    // ensure transport won't stay open
    this.transport.close();

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

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

    // clear session id
    this.id = null;

    // emit close event
    this.emit('close', reason, desc);

    // clean buffers after, so users can still
    // grab the buffers on `close` event
    self.writeBuffer = [];
    self.prevBufferLen = 0;
  }
};

/**
 * 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;
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./transport":23,"./transports/index":24,"component-emitter":30,"debug":31,"engine.io-parser":34,"indexof":38,"parsejson":41,"parseqs":42,"parseuri":43}],23:[function(require,module,exports){
/**
 * Module dependencies.
 */

var parser = require('engine.io-parser');
var Emitter = require('component-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;
  this.socket = opts.socket;
  this.enablesXDR = opts.enablesXDR;

  // SSL options for Node.js client
  this.pfx = opts.pfx;
  this.key = opts.key;
  this.passphrase = opts.passphrase;
  this.cert = opts.cert;
  this.ca = opts.ca;
  this.ciphers = opts.ciphers;
  this.rejectUnauthorized = opts.rejectUnauthorized;
  this.forceNode = opts.forceNode;

  // other options for Node.js client
  this.extraHeaders = opts.extraHeaders;
  this.localAddress = opts.localAddress;
}

/**
 * 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) {
  var packet = parser.decodePacket(data, this.socket.binaryType);
  this.onPacket(packet);
};

/**
 * 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');
};

},{"component-emitter":30,"engine.io-parser":34}],24:[function(require,module,exports){
(function (global){
/**
 * Module dependencies
 */

var XMLHttpRequest = require('xmlhttprequest-ssl');
var XHR = require('./polling-xhr');
var JSONP = require('./polling-jsonp');
var websocket = require('./websocket');

/**
 * Export transports.
 */

exports.polling = polling;
exports.websocket = websocket;

/**
 * Polling transport polymorphic constructor.
 * Decides on xhr vs jsonp based on feature detection.
 *
 * @api private
 */

function polling (opts) {
  var xhr;
  var xd = false;
  var xs = false;
  var jsonp = false !== opts.jsonp;

  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;
    xs = opts.secure !== isSSL;
  }

  opts.xdomain = xd;
  opts.xscheme = xs;
  xhr = new XMLHttpRequest(opts);

  if ('open' in xhr && !opts.forceJSONP) {
    return new XHR(opts);
  } else {
    if (!jsonp) throw new Error('JSONP disabled');
    return new JSONP(opts);
  }
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./polling-jsonp":25,"./polling-xhr":26,"./websocket":28,"xmlhttprequest-ssl":29}],25:[function(require,module,exports){
(function (global){

/**
 * Module requirements.
 */

var Polling = require('./polling');
var inherit = require('component-inherit');

/**
 * Module exports.
 */

module.exports = JSONPPolling;

/**
 * Cached regular expressions.
 */

var rNewline = /\n/g;
var rEscapedNewline = /\\n/g;

/**
 * Global JSONP callbacks.
 */

var callbacks;

/**
 * Noop.
 */

function empty () { }

/**
 * JSONP Polling constructor.
 *
 * @param {Object} opts.
 * @api public
 */

function JSONPPolling (opts) {
  Polling.call(this, opts);

  this.query = this.query || {};

  // 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;

  // prevent spurious errors from being emitted when the window is unloaded
  if (global.document && global.addEventListener) {
    global.addEventListener('beforeunload', function () {
      if (self.script) self.script.onerror = empty;
    }, false);
  }
}

/**
 * Inherits from Polling.
 */

inherit(JSONPPolling, Polling);

/*
 * JSONP only supports binary as base64 encoded strings
 */

JSONPPolling.prototype.supportsBinary = false;

/**
 * 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;
    this.iframe = 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];
  if (insertAt) {
    insertAt.parentNode.insertBefore(script, insertAt);
  } else {
    (document.head || document.body).appendChild(script);
  }
  this.script = script;

  var isUAgecko = 'undefined' !== typeof navigator && /gecko/i.test(navigator.userAgent);

  if (isUAgecko) {
    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
  // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side
  data = data.replace(rEscapedNewline, '\\\n');
  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;
  }
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./polling":27,"component-inherit":19}],26:[function(require,module,exports){
(function (global){
/**
 * Module requirements.
 */

var XMLHttpRequest = require('xmlhttprequest-ssl');
var Polling = require('./polling');
var Emitter = require('component-emitter');
var inherit = require('component-inherit');
var debug = require('debug')('engine.io-client:polling-xhr');

/**
 * Module exports.
 */

module.exports = XHR;
module.exports.Request = Request;

/**
 * Empty function
 */

function empty () {}

/**
 * XHR Polling constructor.
 *
 * @param {Object} opts
 * @api public
 */

function XHR (opts) {
  Polling.call(this, opts);
  this.requestTimeout = opts.requestTimeout;

  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;
    this.xs = opts.secure !== isSSL;
  } else {
    this.extraHeaders = opts.extraHeaders;
  }
}

/**
 * Inherits from Polling.
 */

inherit(XHR, Polling);

/**
 * XHR supports binary
 */

XHR.prototype.supportsBinary = true;

/**
 * Creates a request.
 *
 * @param {String} method
 * @api private
 */

XHR.prototype.request = function (opts) {
  opts = opts || {};
  opts.uri = this.uri();
  opts.xd = this.xd;
  opts.xs = this.xs;
  opts.agent = this.agent || false;
  opts.supportsBinary = this.supportsBinary;
  opts.enablesXDR = this.enablesXDR;

  // SSL options for Node.js client
  opts.pfx = this.pfx;
  opts.key = this.key;
  opts.passphrase = this.passphrase;
  opts.cert = this.cert;
  opts.ca = this.ca;
  opts.ciphers = this.ciphers;
  opts.rejectUnauthorized = this.rejectUnauthorized;
  opts.requestTimeout = this.requestTimeout;

  // other options for Node.js client
  opts.extraHeaders = this.extraHeaders;

  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 isBinary = typeof data !== 'string' && data !== undefined;
  var req = this.request({ method: 'POST', data: data, isBinary: isBinary });
  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.xs = !!opts.xs;
  this.async = false !== opts.async;
  this.data = undefined !== opts.data ? opts.data : null;
  this.agent = opts.agent;
  this.isBinary = opts.isBinary;
  this.supportsBinary = opts.supportsBinary;
  this.enablesXDR = opts.enablesXDR;
  this.requestTimeout = opts.requestTimeout;

  // SSL options for Node.js client
  this.pfx = opts.pfx;
  this.key = opts.key;
  this.passphrase = opts.passphrase;
  this.cert = opts.cert;
  this.ca = opts.ca;
  this.ciphers = opts.ciphers;
  this.rejectUnauthorized = opts.rejectUnauthorized;

  // other options for Node.js client
  this.extraHeaders = opts.extraHeaders;

  this.create();
}

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

Emitter(Request.prototype);

/**
 * Creates the XHR object and sends the request.
 *
 * @api private
 */

Request.prototype.create = function () {
  var opts = { agent: this.agent, xdomain: this.xd, xscheme: this.xs, enablesXDR: this.enablesXDR };

  // SSL options for Node.js client
  opts.pfx = this.pfx;
  opts.key = this.key;
  opts.passphrase = this.passphrase;
  opts.cert = this.cert;
  opts.ca = this.ca;
  opts.ciphers = this.ciphers;
  opts.rejectUnauthorized = this.rejectUnauthorized;

  var xhr = this.xhr = new XMLHttpRequest(opts);
  var self = this;

  try {
    debug('xhr open %s: %s', this.method, this.uri);
    xhr.open(this.method, this.uri, this.async);
    try {
      if (this.extraHeaders) {
        xhr.setDisableHeaderCheck(true);
        for (var i in this.extraHeaders) {
          if (this.extraHeaders.hasOwnProperty(i)) {
            xhr.setRequestHeader(i, this.extraHeaders[i]);
          }
        }
      }
    } catch (e) {}
    if (this.supportsBinary) {
      // This has to be done after open because Firefox is stupid
      // http://stackoverflow.com/questions/13216903/get-binary-data-with-xmlhttprequest-in-a-firefox-extension
      xhr.responseType = 'arraybuffer';
    }

    if ('POST' === this.method) {
      try {
        if (this.isBinary) {
          xhr.setRequestHeader('Content-type', 'application/octet-stream');
        } else {
          xhr.setRequestHeader('Content-type', 'text/plain;charset=UTF-8');
        }
      } catch (e) {}
    }

    try {
      xhr.setRequestHeader('Accept', '*/*');
    } catch (e) {}

    // ie6 check
    if ('withCredentials' in xhr) {
      xhr.withCredentials = true;
    }

    if (this.requestTimeout) {
      xhr.timeout = this.requestTimeout;
    }

    if (this.hasXDR()) {
      xhr.onload = function () {
        self.onLoad();
      };
      xhr.onerror = function () {
        self.onError(xhr.responseText);
      };
    } else {
      xhr.onreadystatechange = function () {
        if (4 !== xhr.readyState) return;
        if (200 === xhr.status || 1223 === xhr.status) {
          self.onLoad();
        } else {
          // make sure the `error` event handler that's user-set
          // does not throw in the same tick and gets caught here
          setTimeout(function () {
            self.onError(xhr.status);
          }, 0);
        }
      };
    }

    debug('xhr data %s', this.data);
    xhr.send(this.data);
  } catch (e) {
    // Need to defer since .create() is called directly fhrom 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 (global.document) {
    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(true);
};

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

Request.prototype.cleanup = function (fromError) {
  if ('undefined' === typeof this.xhr || null === this.xhr) {
    return;
  }
  // xmlhttprequest
  if (this.hasXDR()) {
    this.xhr.onload = this.xhr.onerror = empty;
  } else {
    this.xhr.onreadystatechange = empty;
  }

  if (fromError) {
    try {
      this.xhr.abort();
    } catch (e) {}
  }

  if (global.document) {
    delete Request.requests[this.index];
  }

  this.xhr = null;
};

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

Request.prototype.onLoad = function () {
  var data;
  try {
    var contentType;
    try {
      contentType = this.xhr.getResponseHeader('Content-Type').split(';')[0];
    } catch (e) {}
    if (contentType === 'application/octet-stream') {
      data = this.xhr.response || this.xhr.responseText;
    } else {
      if (!this.supportsBinary) {
        data = this.xhr.responseText;
      } else {
        try {
          data = String.fromCharCode.apply(null, new Uint8Array(this.xhr.response));
        } catch (e) {
          var ui8Arr = new Uint8Array(this.xhr.response);
          var dataArray = [];
          for (var idx = 0, length = ui8Arr.length; idx < length; idx++) {
            dataArray.push(ui8Arr[idx]);
          }

          data = String.fromCharCode.apply(null, dataArray);
        }
      }
    }
  } catch (e) {
    this.onError(e);
  }
  if (null != data) {
    this.onData(data);
  }
};

/**
 * Check if it has XDomainRequest.
 *
 * @api private
 */

Request.prototype.hasXDR = function () {
  return 'undefined' !== typeof global.XDomainRequest && !this.xs && this.enablesXDR;
};

/**
 * Aborts the request.
 *
 * @api public
 */

Request.prototype.abort = function () {
  this.cleanup();
};

/**
 * Aborts pending requests when unloading the window. This is needed to prevent
 * memory leaks (e.g. when using IE) and to ensure that no spurious error is
 * emitted.
 */

Request.requestsCount = 0;
Request.requests = {};

if (global.document) {
  if (global.attachEvent) {
    global.attachEvent('onunload', unloadHandler);
  } else if (global.addEventListener) {
    global.addEventListener('beforeunload', unloadHandler, false);
  }
}

function unloadHandler () {
  for (var i in Request.requests) {
    if (Request.requests.hasOwnProperty(i)) {
      Request.requests[i].abort();
    }
  }
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./polling":27,"component-emitter":30,"component-inherit":19,"debug":31,"xmlhttprequest-ssl":29}],27:[function(require,module,exports){
/**
 * Module dependencies.
 */

var Transport = require('../transport');
var parseqs = require('parseqs');
var parser = require('engine.io-parser');
var inherit = require('component-inherit');
var yeast = require('yeast');
var debug = require('debug')('engine.io-client:polling');

/**
 * Module exports.
 */

module.exports = Polling;

/**
 * Is XHR2 supported?
 */

var hasXHR2 = (function () {
  var XMLHttpRequest = require('xmlhttprequest-ssl');
  var xhr = new XMLHttpRequest({ xdomain: false });
  return null != xhr.responseType;
})();

/**
 * Polling interface.
 *
 * @param {Object} opts
 * @api private
 */

function Polling (opts) {
  var forceBase64 = (opts && opts.forceBase64);
  if (!hasXHR2 || forceBase64) {
    this.supportsBinary = false;
  }
  Transport.call(this, opts);
}

/**
 * Inherits from Transport.
 */

inherit(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 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);
  var callback = 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);
  };

  // decode payload
  parser.decodePayload(data, this.socket.binaryType, callback);

  // 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;
  var callbackfn = function () {
    self.writable = true;
    self.emit('drain');
  };

  parser.encodePayload(packets, this.supportsBinary, function (data) {
    self.doWrite(data, callbackfn);
  });
};

/**
 * 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
  if (false !== this.timestampRequests) {
    query[this.timestampParam] = yeast();
  }

  if (!this.supportsBinary && !query.sid) {
    query.b64 = 1;
  }

  query = parseqs.encode(query);

  // avoid port if default for schema
  if (this.port && (('https' === schema && Number(this.port) !== 443) ||
     ('http' === schema && Number(this.port) !== 80))) {
    port = ':' + this.port;
  }

  // prepend ? to query
  if (query.length) {
    query = '?' + query;
  }

  var ipv6 = this.hostname.indexOf(':') !== -1;
  return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : this.hostname) + port + this.path + query;
};

},{"../transport":23,"component-inherit":19,"debug":31,"engine.io-parser":34,"parseqs":42,"xmlhttprequest-ssl":29,"yeast":61}],28:[function(require,module,exports){
(function (global){
/**
 * Module dependencies.
 */

var Transport = require('../transport');
var parser = require('engine.io-parser');
var parseqs = require('parseqs');
var inherit = require('component-inherit');
var yeast = require('yeast');
var debug = require('debug')('engine.io-client:websocket');
var BrowserWebSocket = global.WebSocket || global.MozWebSocket;
var NodeWebSocket;
if (typeof window === 'undefined') {
  try {
    NodeWebSocket = require('ws');
  } catch (e) { }
}

/**
 * Get either the `WebSocket` or `MozWebSocket` globals
 * in the browser or try to resolve WebSocket-compatible
 * interface exposed by `ws` for Node-like environment.
 */

var WebSocket = BrowserWebSocket;
if (!WebSocket && typeof window === 'undefined') {
  WebSocket = NodeWebSocket;
}

/**
 * Module exports.
 */

module.exports = WS;

/**
 * WebSocket transport constructor.
 *
 * @api {Object} connection options
 * @api public
 */

function WS (opts) {
  var forceBase64 = (opts && opts.forceBase64);
  if (forceBase64) {
    this.supportsBinary = false;
  }
  this.perMessageDeflate = opts.perMessageDeflate;
  this.usingBrowserWebSocket = BrowserWebSocket && !opts.forceNode;
  if (!this.usingBrowserWebSocket) {
    WebSocket = NodeWebSocket;
  }
  Transport.call(this, opts);
}

/**
 * Inherits from Transport.
 */

inherit(WS, Transport);

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

WS.prototype.name = 'websocket';

/*
 * WebSockets support binary
 */

WS.prototype.supportsBinary = true;

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

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

  var uri = this.uri();
  var protocols = void (0);
  var opts = {
    agent: this.agent,
    perMessageDeflate: this.perMessageDeflate
  };

  // SSL options for Node.js client
  opts.pfx = this.pfx;
  opts.key = this.key;
  opts.passphrase = this.passphrase;
  opts.cert = this.cert;
  opts.ca = this.ca;
  opts.ciphers = this.ciphers;
  opts.rejectUnauthorized = this.rejectUnauthorized;
  if (this.extraHeaders) {
    opts.headers = this.extraHeaders;
  }
  if (this.localAddress) {
    opts.localAddress = this.localAddress;
  }

  try {
    this.ws = this.usingBrowserWebSocket ? new WebSocket(uri) : new WebSocket(uri, protocols, opts);
  } catch (err) {
    return this.emit('error', err);
  }

  if (this.ws.binaryType === undefined) {
    this.supportsBinary = false;
  }

  if (this.ws.supports && this.ws.supports.binary) {
    this.supportsBinary = true;
    this.ws.binaryType = 'nodebuffer';
  } else {
    this.ws.binaryType = 'arraybuffer';
  }

  this.addEventListeners();
};

/**
 * Adds event listeners to the socket
 *
 * @api private
 */

WS.prototype.addEventListeners = function () {
  var self = this;

  this.ws.onopen = function () {
    self.onOpen();
  };
  this.ws.onclose = function () {
    self.onClose();
  };
  this.ws.onmessage = function (ev) {
    self.onData(ev.data);
  };
  this.ws.onerror = function (e) {
    self.onError('websocket error', e);
  };
};

/**
 * 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
  var total = packets.length;
  for (var i = 0, l = total; i < l; i++) {
    (function (packet) {
      parser.encodePacket(packet, self.supportsBinary, function (data) {
        if (!self.usingBrowserWebSocket) {
          // always create a new object (GH-437)
          var opts = {};
          if (packet.options) {
            opts.compress = packet.options.compress;
          }

          if (self.perMessageDeflate) {
            var len = 'string' === typeof data ? global.Buffer.byteLength(data) : data.length;
            if (len < self.perMessageDeflate.threshold) {
              opts.compress = false;
            }
          }
        }

        // Sometimes the websocket has already been closed but the browser didn't
        // have a chance of informing us about it yet, in that case send will
        // throw an error
        try {
          if (self.usingBrowserWebSocket) {
            // TypeError is thrown when passing the second argument on Safari
            self.ws.send(data);
          } else {
            self.ws.send(data, opts);
          }
        } catch (e) {
          debug('websocket closed before onclose event');
        }

        --total || done();
      });
    })(packets[i]);
  }

  function done () {
    self.emit('flush');

    // fake drain
    // defer to next tick to allow Socket to clear writeBuffer
    setTimeout(function () {
      self.writable = true;
      self.emit('drain');
    }, 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.ws !== 'undefined') {
    this.ws.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 && Number(this.port) !== 443) ||
    ('ws' === schema && Number(this.port) !== 80))) {
    port = ':' + this.port;
  }

  // append timestamp to URI
  if (this.timestampRequests) {
    query[this.timestampParam] = yeast();
  }

  // communicate binary support capabilities
  if (!this.supportsBinary) {
    query.b64 = 1;
  }

  query = parseqs.encode(query);

  // prepend ? to query
  if (query.length) {
    query = '?' + query;
  }

  var ipv6 = this.hostname.indexOf(':') !== -1;
  return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : 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);
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../transport":23,"component-inherit":19,"debug":31,"engine.io-parser":34,"parseqs":42,"ws":62,"yeast":61}],29:[function(require,module,exports){
(function (global){
// browser shim for xmlhttprequest module

var hasCORS = require('has-cors');

module.exports = function (opts) {
  var xdomain = opts.xdomain;

  // scheme must be same when usign XDomainRequest
  // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx
  var xscheme = opts.xscheme;

  // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.
  // https://github.com/Automattic/engine.io-client/pull/217
  var enablesXDR = opts.enablesXDR;

  // XMLHttpRequest can be disabled on IE
  try {
    if ('undefined' !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {
      return new XMLHttpRequest();
    }
  } catch (e) { }

  // Use XDomainRequest for IE8 if enablesXDR is true
  // because loading bar keeps flashing when using jsonp-polling
  // https://github.com/yujiosaka/socke.io-ie8-loading-example
  try {
    if ('undefined' !== typeof XDomainRequest && !xscheme && enablesXDR) {
      return new XDomainRequest();
    }
  } catch (e) { }

  if (!xdomain) {
    try {
      return new global[['Active'].concat('Object').join('X')]('Microsoft.XMLHTTP');
    } catch (e) { }
  }
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"has-cors":37}],30:[function(require,module,exports){

/**
 * Expose `Emitter`.
 */

if (typeof module !== 'undefined') {
  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 =
Emitter.prototype.addEventListener = 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){
  function on() {
    this.off(event, on);
    fn.apply(this, arguments);
  }

  on.fn = fn;
  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 =
Emitter.prototype.removeEventListener = 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 cb;
  for (var i = 0; i < callbacks.length; i++) {
    cb = callbacks[i];
    if (cb === fn || cb.fn === fn) {
      callbacks.splice(i, 1);
      break;
    }
  }
  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;
};

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

/**
 * This is the web browser implementation of `debug()`.
 *
 * Expose `debug()` as the module.
 */

exports = module.exports = require('./debug');
exports.log = log;
exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
exports.storage = 'undefined' != typeof chrome
               && 'undefined' != typeof chrome.storage
                  ? chrome.storage.local
                  : localstorage();

/**
 * Colors.
 */

exports.colors = [
  'lightseagreen',
  'forestgreen',
  'goldenrod',
  'dodgerblue',
  'darkorchid',
  'crimson'
];

/**
 * Currently only WebKit-based Web Inspectors, Firefox >= v31,
 * and the Firebug extension (any Firefox version) are known
 * to support "%c" CSS customizations.
 *
 * TODO: add a `localStorage` variable to explicitly enable/disable colors
 */

function useColors() {
  // is webkit? http://stackoverflow.com/a/16459606/376773
  // document is undefined in react-native: https://github.com/facebook/react-native/pull/1632
  return (typeof document !== 'undefined' && 'WebkitAppearance' in document.documentElement.style) ||
    // is firebug? http://stackoverflow.com/a/398120/376773
    (window.console && (console.firebug || (console.exception && console.table))) ||
    // is firefox >= v31?
    // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
    (navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31);
}

/**
 * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
 */

exports.formatters.j = function(v) {
  try {
    return JSON.stringify(v);
  } catch (err) {
    return '[UnexpectedJSONParseError]: ' + err.message;
  }
};


/**
 * Colorize log arguments if enabled.
 *
 * @api public
 */

function formatArgs() {
  var args = arguments;
  var useColors = this.useColors;

  args[0] = (useColors ? '%c' : '')
    + this.namespace
    + (useColors ? ' %c' : ' ')
    + args[0]
    + (useColors ? '%c ' : ' ')
    + '+' + exports.humanize(this.diff);

  if (!useColors) return args;

  var c = 'color: ' + this.color;
  args = [args[0], c, 'color: inherit'].concat(Array.prototype.slice.call(args, 1));

  // the final "%c" is somewhat tricky, because there could be other
  // arguments passed either before or after the %c, so we need to
  // figure out the correct index to insert the CSS into
  var index = 0;
  var lastC = 0;
  args[0].replace(/%[a-z%]/g, function(match) {
    if ('%%' === match) return;
    index++;
    if ('%c' === match) {
      // we only are interested in the *last* %c
      // (the user may have provided their own)
      lastC = index;
    }
  });

  args.splice(lastC, 0, c);
  return args;
}

/**
 * Invokes `console.log()` when available.
 * No-op when `console.log` is not a "function".
 *
 * @api public
 */

function log() {
  // this hackery is required for IE8/9, where
  // the `console.log` function doesn't have 'apply'
  return 'object' === typeof console
    && console.log
    && Function.prototype.apply.call(console.log, console, arguments);
}

/**
 * Save `namespaces`.
 *
 * @param {String} namespaces
 * @api private
 */

function save(namespaces) {
  try {
    if (null == namespaces) {
      exports.storage.removeItem('debug');
    } else {
      exports.storage.debug = namespaces;
    }
  } catch(e) {}
}

/**
 * Load `namespaces`.
 *
 * @return {String} returns the previously persisted debug modes
 * @api private
 */

function load() {
  var r;
  try {
    return exports.storage.debug;
  } catch(e) {}

  // If debug isn't set in LS, and we're in Electron, try to load $DEBUG
  if (typeof process !== 'undefined' && 'env' in process) {
    return process.env.DEBUG;
  }
}

/**
 * Enable namespaces listed in `localStorage.debug` initially.
 */

exports.enable(load());

/**
 * Localstorage attempts to return the localstorage.
 *
 * This is necessary because safari throws
 * when a user disables cookies/localstorage
 * and you attempt to access it.
 *
 * @return {LocalStorage}
 * @api private
 */

function localstorage(){
  try {
    return window.localStorage;
  } catch (e) {}
}

}).call(this,require('_process'))
},{"./debug":32,"_process":63}],32:[function(require,module,exports){

/**
 * This is the common logic for both the Node.js and web browser
 * implementations of `debug()`.
 *
 * Expose `debug()` as the module.
 */

exports = module.exports = debug.debug = debug;
exports.coerce = coerce;
exports.disable = disable;
exports.enable = enable;
exports.enabled = enabled;
exports.humanize = require('ms');

/**
 * The currently active debug mode names, and names to skip.
 */

exports.names = [];
exports.skips = [];

/**
 * Map of special "%n" handling functions, for the debug "format" argument.
 *
 * Valid key names are a single, lowercased letter, i.e. "n".
 */

exports.formatters = {};

/**
 * Previously assigned color.
 */

var prevColor = 0;

/**
 * Previous log timestamp.
 */

var prevTime;

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

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

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

function debug(namespace) {

  // define the `disabled` version
  function disabled() {
  }
  disabled.enabled = false;

  // define the `enabled` version
  function enabled() {

    var self = enabled;

    // set `diff` timestamp
    var curr = +new Date();
    var ms = curr - (prevTime || curr);
    self.diff = ms;
    self.prev = prevTime;
    self.curr = curr;
    prevTime = curr;

    // add the `color` if not set
    if (null == self.useColors) self.useColors = exports.useColors();
    if (null == self.color && self.useColors) self.color = selectColor();

    var args = new Array(arguments.length);
    for (var i = 0; i < args.length; i++) {
      args[i] = arguments[i];
    }

    args[0] = exports.coerce(args[0]);

    if ('string' !== typeof args[0]) {
      // anything else let's inspect with %o
      args = ['%o'].concat(args);
    }

    // apply any `formatters` transformations
    var index = 0;
    args[0] = args[0].replace(/%([a-z%])/g, function(match, format) {
      // if we encounter an escaped % then don't increase the array index
      if (match === '%%') return match;
      index++;
      var formatter = exports.formatters[format];
      if ('function' === typeof formatter) {
        var val = args[index];
        match = formatter.call(self, val);

        // now we need to remove `args[index]` since it's inlined in the `format`
        args.splice(index, 1);
        index--;
      }
      return match;
    });

    // apply env-specific formatting
    args = exports.formatArgs.apply(self, args);

    var logFn = enabled.log || exports.log || console.log.bind(console);
    logFn.apply(self, args);
  }
  enabled.enabled = true;

  var fn = exports.enabled(namespace) ? enabled : disabled;

  fn.namespace = namespace;

  return fn;
}

/**
 * Enables a debug mode by namespaces. This can include modes
 * separated by a colon and wildcards.
 *
 * @param {String} namespaces
 * @api public
 */

function enable(namespaces) {
  exports.save(namespaces);

  var split = (namespaces || '').split(/[\s,]+/);
  var len = split.length;

  for (var i = 0; i < len; i++) {
    if (!split[i]) continue; // ignore empty strings
    namespaces = split[i].replace(/[\\^$+?.()|[\]{}]/g, '\\$&').replace(/\*/g, '.*?');
    if (namespaces[0] === '-') {
      exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
    } else {
      exports.names.push(new RegExp('^' + namespaces + '$'));
    }
  }
}

/**
 * Disable debug output.
 *
 * @api public
 */

function disable() {
  exports.enable('');
}

/**
 * Returns true if the given mode name is enabled, false otherwise.
 *
 * @param {String} name
 * @return {Boolean}
 * @api public
 */

function enabled(name) {
  var i, len;
  for (i = 0, len = exports.skips.length; i < len; i++) {
    if (exports.skips[i].test(name)) {
      return false;
    }
  }
  for (i = 0, len = exports.names.length; i < len; i++) {
    if (exports.names[i].test(name)) {
      return true;
    }
  }
  return false;
}

/**
 * Coerce `val`.
 *
 * @param {Mixed} val
 * @return {Mixed}
 * @api private
 */

function coerce(val) {
  if (val instanceof Error) return val.stack || val.message;
  return val;
}

},{"ms":33}],33:[function(require,module,exports){
/**
 * Helpers.
 */

var s = 1000
var m = s * 60
var h = m * 60
var d = h * 24
var y = d * 365.25

/**
 * Parse or format the given `val`.
 *
 * Options:
 *
 *  - `long` verbose formatting [false]
 *
 * @param {String|Number} val
 * @param {Object} options
 * @throws {Error} throw an error if val is not a non-empty string or a number
 * @return {String|Number}
 * @api public
 */

module.exports = function (val, options) {
  options = options || {}
  var type = typeof val
  if (type === 'string' && val.length > 0) {
    return parse(val)
  } else if (type === 'number' && isNaN(val) === false) {
    return options.long ?
			fmtLong(val) :
			fmtShort(val)
  }
  throw new Error('val is not a non-empty string or a valid number. val=' + JSON.stringify(val))
}

/**
 * Parse the given `str` and return milliseconds.
 *
 * @param {String} str
 * @return {Number}
 * @api private
 */

function parse(str) {
  str = String(str)
  if (str.length > 10000) {
    return
  }
  var match = /^((?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|years?|yrs?|y)?$/i.exec(str)
  if (!match) {
    return
  }
  var n = parseFloat(match[1])
  var type = (match[2] || 'ms').toLowerCase()
  switch (type) {
    case 'years':
    case 'year':
    case 'yrs':
    case 'yr':
    case 'y':
      return n * y
    case 'days':
    case 'day':
    case 'd':
      return n * d
    case 'hours':
    case 'hour':
    case 'hrs':
    case 'hr':
    case 'h':
      return n * h
    case 'minutes':
    case 'minute':
    case 'mins':
    case 'min':
    case 'm':
      return n * m
    case 'seconds':
    case 'second':
    case 'secs':
    case 'sec':
    case 's':
      return n * s
    case 'milliseconds':
    case 'millisecond':
    case 'msecs':
    case 'msec':
    case 'ms':
      return n
    default:
      return undefined
  }
}

/**
 * Short format for `ms`.
 *
 * @param {Number} ms
 * @return {String}
 * @api private
 */

function fmtShort(ms) {
  if (ms >= d) {
    return Math.round(ms / d) + 'd'
  }
  if (ms >= h) {
    return Math.round(ms / h) + 'h'
  }
  if (ms >= m) {
    return Math.round(ms / m) + 'm'
  }
  if (ms >= s) {
    return Math.round(ms / s) + 's'
  }
  return ms + 'ms'
}

/**
 * Long format for `ms`.
 *
 * @param {Number} ms
 * @return {String}
 * @api private
 */

function fmtLong(ms) {
  return plural(ms, d, 'day') ||
    plural(ms, h, 'hour') ||
    plural(ms, m, 'minute') ||
    plural(ms, s, 'second') ||
    ms + ' ms'
}

/**
 * Pluralization helper.
 */

function plural(ms, n, name) {
  if (ms < n) {
    return
  }
  if (ms < n * 1.5) {
    return Math.floor(ms / n) + ' ' + name
  }
  return Math.ceil(ms / n) + ' ' + name + 's'
}

},{}],34:[function(require,module,exports){
(function (global){
/**
 * Module dependencies.
 */

var keys = require('./keys');
var hasBinary = require('has-binary');
var sliceBuffer = require('arraybuffer.slice');
var after = require('after');
var utf8 = require('wtf-8');

var base64encoder;
if (global && global.ArrayBuffer) {
  base64encoder = require('base64-arraybuffer');
}

/**
 * Check if we are running an android browser. That requires us to use
 * ArrayBuffer with polling transports...
 *
 * http://ghinda.net/jpeg-blob-ajax-android/
 */

var isAndroid = typeof navigator !== 'undefined' && /Android/i.test(navigator.userAgent);

/**
 * Check if we are running in PhantomJS.
 * Uploading a Blob with PhantomJS does not work correctly, as reported here:
 * https://github.com/ariya/phantomjs/issues/11395
 * @type boolean
 */
var isPhantomJS = typeof navigator !== 'undefined' && /PhantomJS/i.test(navigator.userAgent);

/**
 * When true, avoids using Blobs to encode payloads.
 * @type boolean
 */
var dontSendBlobs = isAndroid || isPhantomJS;

/**
 * Current protocol version.
 */

exports.protocol = 3;

/**
 * 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' };

/**
 * Create a blob api even for blob builder when vendor prefixes exist
 */

var Blob = require('blob');

/**
 * Encodes a packet.
 *
 *     <packet type id> [ <data> ]
 *
 * Example:
 *
 *     5hello world
 *     3
 *     4
 *
 * Binary is encoded in an identical principle
 *
 * @api private
 */

exports.encodePacket = function (packet, supportsBinary, utf8encode, callback) {
  if ('function' == typeof supportsBinary) {
    callback = supportsBinary;
    supportsBinary = false;
  }

  if ('function' == typeof utf8encode) {
    callback = utf8encode;
    utf8encode = null;
  }

  var data = (packet.data === undefined)
    ? undefined
    : packet.data.buffer || packet.data;

  if (global.ArrayBuffer && data instanceof ArrayBuffer) {
    return encodeArrayBuffer(packet, supportsBinary, callback);
  } else if (Blob && data instanceof global.Blob) {
    return encodeBlob(packet, supportsBinary, callback);
  }

  // might be an object with { base64: true, data: dataAsBase64String }
  if (data && data.base64) {
    return encodeBase64Object(packet, callback);
  }

  // Sending data as a utf-8 string
  var encoded = packets[packet.type];

  // data fragment is optional
  if (undefined !== packet.data) {
    encoded += utf8encode ? utf8.encode(String(packet.data)) : String(packet.data);
  }

  return callback('' + encoded);

};

function encodeBase64Object(packet, callback) {
  // packet data is an object { base64: true, data: dataAsBase64String }
  var message = 'b' + exports.packets[packet.type] + packet.data.data;
  return callback(message);
}

/**
 * Encode packet helpers for binary types
 */

function encodeArrayBuffer(packet, supportsBinary, callback) {
  if (!supportsBinary) {
    return exports.encodeBase64Packet(packet, callback);
  }

  var data = packet.data;
  var contentArray = new Uint8Array(data);
  var resultBuffer = new Uint8Array(1 + data.byteLength);

  resultBuffer[0] = packets[packet.type];
  for (var i = 0; i < contentArray.length; i++) {
    resultBuffer[i+1] = contentArray[i];
  }

  return callback(resultBuffer.buffer);
}

function encodeBlobAsArrayBuffer(packet, supportsBinary, callback) {
  if (!supportsBinary) {
    return exports.encodeBase64Packet(packet, callback);
  }

  var fr = new FileReader();
  fr.onload = function() {
    packet.data = fr.result;
    exports.encodePacket(packet, supportsBinary, true, callback);
  };
  return fr.readAsArrayBuffer(packet.data);
}

function encodeBlob(packet, supportsBinary, callback) {
  if (!supportsBinary) {
    return exports.encodeBase64Packet(packet, callback);
  }

  if (dontSendBlobs) {
    return encodeBlobAsArrayBuffer(packet, supportsBinary, callback);
  }

  var length = new Uint8Array(1);
  length[0] = packets[packet.type];
  var blob = new Blob([length.buffer, packet.data]);

  return callback(blob);
}

/**
 * Encodes a packet with binary data in a base64 string
 *
 * @param {Object} packet, has `type` and `data`
 * @return {String} base64 encoded message
 */

exports.encodeBase64Packet = function(packet, callback) {
  var message = 'b' + exports.packets[packet.type];
  if (Blob && packet.data instanceof global.Blob) {
    var fr = new FileReader();
    fr.onload = function() {
      var b64 = fr.result.split(',')[1];
      callback(message + b64);
    };
    return fr.readAsDataURL(packet.data);
  }

  var b64data;
  try {
    b64data = String.fromCharCode.apply(null, new Uint8Array(packet.data));
  } catch (e) {
    // iPhone Safari doesn't let you apply with typed arrays
    var typed = new Uint8Array(packet.data);
    var basic = new Array(typed.length);
    for (var i = 0; i < typed.length; i++) {
      basic[i] = typed[i];
    }
    b64data = String.fromCharCode.apply(null, basic);
  }
  message += global.btoa(b64data);
  return callback(message);
};

/**
 * Decodes a packet. Changes format to Blob if requested.
 *
 * @return {Object} with `type` and `data` (if any)
 * @api private
 */

exports.decodePacket = function (data, binaryType, utf8decode) {
  if (data === undefined) {
    return err;
  }
  // String data
  if (typeof data == 'string') {
    if (data.charAt(0) == 'b') {
      return exports.decodeBase64Packet(data.substr(1), binaryType);
    }

    if (utf8decode) {
      data = tryDecode(data);
      if (data === false) {
        return err;
      }
    }
    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] };
    }
  }

  var asArray = new Uint8Array(data);
  var type = asArray[0];
  var rest = sliceBuffer(data, 1);
  if (Blob && binaryType === 'blob') {
    rest = new Blob([rest]);
  }
  return { type: packetslist[type], data: rest };
};

function tryDecode(data) {
  try {
    data = utf8.decode(data);
  } catch (e) {
    return false;
  }
  return data;
}

/**
 * Decodes a packet encoded in a base64 string
 *
 * @param {String} base64 encoded message
 * @return {Object} with `type` and `data` (if any)
 */

exports.decodeBase64Packet = function(msg, binaryType) {
  var type = packetslist[msg.charAt(0)];
  if (!base64encoder) {
    return { type: type, data: { base64: true, data: msg.substr(1) } };
  }

  var data = base64encoder.decode(msg.substr(1));

  if (binaryType === 'blob' && Blob) {
    data = new Blob([data]);
  }

  return { type: type, data: data };
};

/**
 * Encodes multiple messages (payload).
 *
 *     <length>:data
 *
 * Example:
 *
 *     11:hello world2:hi
 *
 * If any contents are binary, they will be encoded as base64 strings. Base64
 * encoded strings are marked with a b before the length specifier
 *
 * @param {Array} packets
 * @api private
 */

exports.encodePayload = function (packets, supportsBinary, callback) {
  if (typeof supportsBinary == 'function') {
    callback = supportsBinary;
    supportsBinary = null;
  }

  var isBinary = hasBinary(packets);

  if (supportsBinary && isBinary) {
    if (Blob && !dontSendBlobs) {
      return exports.encodePayloadAsBlob(packets, callback);
    }

    return exports.encodePayloadAsArrayBuffer(packets, callback);
  }

  if (!packets.length) {
    return callback('0:');
  }

  function setLengthHeader(message) {
    return message.length + ':' + message;
  }

  function encodeOne(packet, doneCallback) {
    exports.encodePacket(packet, !isBinary ? false : supportsBinary, true, function(message) {
      doneCallback(null, setLengthHeader(message));
    });
  }

  map(packets, encodeOne, function(err, results) {
    return callback(results.join(''));
  });
};

/**
 * Async array map using after
 */

function map(ary, each, done) {
  var result = new Array(ary.length);
  var next = after(ary.length, done);

  var eachWithIndex = function(i, el, cb) {
    each(el, function(error, msg) {
      result[i] = msg;
      cb(error, result);
    });
  };

  for (var i = 0; i < ary.length; i++) {
    eachWithIndex(i, ary[i], next);
  }
}

/*
 * Decodes data when a payload is maybe expected. Possible binary contents are
 * decoded from their base64 representation
 *
 * @param {String} data, callback method
 * @api public
 */

exports.decodePayload = function (data, binaryType, callback) {
  if (typeof data != 'string') {
    return exports.decodePayloadAsBinary(data, binaryType, callback);
  }

  if (typeof binaryType === 'function') {
    callback = binaryType;
    binaryType = null;
  }

  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, binaryType, true);

        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);
  }

};

/**
 * Encodes multiple messages (payload) as binary.
 *
 * <1 = binary, 0 = string><number from 0-9><number from 0-9>[...]<number
 * 255><data>
 *
 * Example:
 * 1 3 255 1 2 3, if the binary contents are interpreted as 8 bit integers
 *
 * @param {Array} packets
 * @return {ArrayBuffer} encoded payload
 * @api private
 */

exports.encodePayloadAsArrayBuffer = function(packets, callback) {
  if (!packets.length) {
    return callback(new ArrayBuffer(0));
  }

  function encodeOne(packet, doneCallback) {
    exports.encodePacket(packet, true, true, function(data) {
      return doneCallback(null, data);
    });
  }

  map(packets, encodeOne, function(err, encodedPackets) {
    var totalLength = encodedPackets.reduce(function(acc, p) {
      var len;
      if (typeof p === 'string'){
        len = p.length;
      } else {
        len = p.byteLength;
      }
      return acc + len.toString().length + len + 2; // string/binary identifier + separator = 2
    }, 0);

    var resultArray = new Uint8Array(totalLength);

    var bufferIndex = 0;
    encodedPackets.forEach(function(p) {
      var isString = typeof p === 'string';
      var ab = p;
      if (isString) {
        var view = new Uint8Array(p.length);
        for (var i = 0; i < p.length; i++) {
          view[i] = p.charCodeAt(i);
        }
        ab = view.buffer;
      }

      if (isString) { // not true binary
        resultArray[bufferIndex++] = 0;
      } else { // true binary
        resultArray[bufferIndex++] = 1;
      }

      var lenStr = ab.byteLength.toString();
      for (var i = 0; i < lenStr.length; i++) {
        resultArray[bufferIndex++] = parseInt(lenStr[i]);
      }
      resultArray[bufferIndex++] = 255;

      var view = new Uint8Array(ab);
      for (var i = 0; i < view.length; i++) {
        resultArray[bufferIndex++] = view[i];
      }
    });

    return callback(resultArray.buffer);
  });
};

/**
 * Encode as Blob
 */

exports.encodePayloadAsBlob = function(packets, callback) {
  function encodeOne(packet, doneCallback) {
    exports.encodePacket(packet, true, true, function(encoded) {
      var binaryIdentifier = new Uint8Array(1);
      binaryIdentifier[0] = 1;
      if (typeof encoded === 'string') {
        var view = new Uint8Array(encoded.length);
        for (var i = 0; i < encoded.length; i++) {
          view[i] = encoded.charCodeAt(i);
        }
        encoded = view.buffer;
        binaryIdentifier[0] = 0;
      }

      var len = (encoded instanceof ArrayBuffer)
        ? encoded.byteLength
        : encoded.size;

      var lenStr = len.toString();
      var lengthAry = new Uint8Array(lenStr.length + 1);
      for (var i = 0; i < lenStr.length; i++) {
        lengthAry[i] = parseInt(lenStr[i]);
      }
      lengthAry[lenStr.length] = 255;

      if (Blob) {
        var blob = new Blob([binaryIdentifier.buffer, lengthAry.buffer, encoded]);
        doneCallback(null, blob);
      }
    });
  }

  map(packets, encodeOne, function(err, results) {
    return callback(new Blob(results));
  });
};

/*
 * Decodes data when a payload is maybe expected. Strings are decoded by
 * interpreting each byte as a key code for entries marked to start with 0. See
 * description of encodePayloadAsBinary
 *
 * @param {ArrayBuffer} data, callback method
 * @api public
 */

exports.decodePayloadAsBinary = function (data, binaryType, callback) {
  if (typeof binaryType === 'function') {
    callback = binaryType;
    binaryType = null;
  }

  var bufferTail = data;
  var buffers = [];

  var numberTooLong = false;
  while (bufferTail.byteLength > 0) {
    var tailArray = new Uint8Array(bufferTail);
    var isString = tailArray[0] === 0;
    var msgLength = '';

    for (var i = 1; ; i++) {
      if (tailArray[i] == 255) break;

      if (msgLength.length > 310) {
        numberTooLong = true;
        break;
      }

      msgLength += tailArray[i];
    }

    if(numberTooLong) return callback(err, 0, 1);

    bufferTail = sliceBuffer(bufferTail, 2 + msgLength.length);
    msgLength = parseInt(msgLength);

    var msg = sliceBuffer(bufferTail, 0, msgLength);
    if (isString) {
      try {
        msg = String.fromCharCode.apply(null, new Uint8Array(msg));
      } catch (e) {
        // iPhone Safari doesn't let you apply to typed arrays
        var typed = new Uint8Array(msg);
        msg = '';
        for (var i = 0; i < typed.length; i++) {
          msg += String.fromCharCode(typed[i]);
        }
      }
    }

    buffers.push(msg);
    bufferTail = sliceBuffer(bufferTail, msgLength);
  }

  var total = buffers.length;
  buffers.forEach(function(buffer, i) {
    callback(exports.decodePacket(buffer, binaryType, true), i, total);
  });
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./keys":35,"after":12,"arraybuffer.slice":13,"base64-arraybuffer":15,"blob":16,"has-binary":36,"wtf-8":60}],35:[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;
};

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

/*
 * Module requirements.
 */

var isArray = require('isarray');

/**
 * Module exports.
 */

module.exports = hasBinary;

/**
 * Checks for binary data.
 *
 * Right now only Buffer and ArrayBuffer are supported..
 *
 * @param {Object} anything
 * @api public
 */

function hasBinary(data) {

  function _hasBinary(obj) {
    if (!obj) return false;

    if ( (global.Buffer && global.Buffer.isBuffer && global.Buffer.isBuffer(obj)) ||
         (global.ArrayBuffer && obj instanceof ArrayBuffer) ||
         (global.Blob && obj instanceof Blob) ||
         (global.File && obj instanceof File)
        ) {
      return true;
    }

    if (isArray(obj)) {
      for (var i = 0; i < obj.length; i++) {
          if (_hasBinary(obj[i])) {
              return true;
          }
      }
    } else if (obj && 'object' == typeof obj) {
      // see: https://github.com/Automattic/has-binary/pull/4
      if (obj.toJSON && 'function' == typeof obj.toJSON) {
        obj = obj.toJSON();
      }

      for (var key in obj) {
        if (Object.prototype.hasOwnProperty.call(obj, key) && _hasBinary(obj[key])) {
          return true;
        }
      }
    }

    return false;
  }

  return _hasBinary(data);
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"isarray":39}],37:[function(require,module,exports){

/**
 * Module exports.
 *
 * Logic borrowed from Modernizr:
 *
 *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js
 */

try {
  module.exports = typeof XMLHttpRequest !== 'undefined' &&
    'withCredentials' in new XMLHttpRequest();
} catch (err) {
  // if XMLHttp support is disabled in IE then it will throw
  // when trying to create
  module.exports = false;
}

},{}],38:[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;
};
},{}],39:[function(require,module,exports){
module.exports = Array.isArray || function (arr) {
  return Object.prototype.toString.call(arr) == '[object Array]';
};

},{}],40:[function(require,module,exports){
(function (global){
/*! JSON v3.3.2 | http://bestiejs.github.io/json3 | Copyright 2012-2014, Kit Cambridge | http://kit.mit-license.org */
;(function () {
  // 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;

  // A set of types used to distinguish objects from primitives.
  var objectTypes = {
    "function": true,
    "object": true
  };

  // Detect the `exports` object exposed by CommonJS implementations.
  var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;

  // Use the `global` object exposed by Node (including Browserify via
  // `insert-module-globals`), Narwhal, and Ringo as the default context,
  // and the `window` object in browsers. Rhino exports a `global` function
  // instead.
  var root = objectTypes[typeof window] && window || this,
      freeGlobal = freeExports && objectTypes[typeof module] && module && !module.nodeType && typeof global == "object" && global;

  if (freeGlobal && (freeGlobal["global"] === freeGlobal || freeGlobal["window"] === freeGlobal || freeGlobal["self"] === freeGlobal)) {
    root = freeGlobal;
  }

  // Public: Initializes JSON 3 using the given `context` object, attaching the
  // `stringify` and `parse` functions to the specified `exports` object.
  function runInContext(context, exports) {
    context || (context = root["Object"]());
    exports || (exports = root["Object"]());

    // Native constructor aliases.
    var Number = context["Number"] || root["Number"],
        String = context["String"] || root["String"],
        Object = context["Object"] || root["Object"],
        Date = context["Date"] || root["Date"],
        SyntaxError = context["SyntaxError"] || root["SyntaxError"],
        TypeError = context["TypeError"] || root["TypeError"],
        Math = context["Math"] || root["Math"],
        nativeJSON = context["JSON"] || root["JSON"];

    // Delegate to the native `stringify` and `parse` implementations.
    if (typeof nativeJSON == "object" && nativeJSON) {
      exports.stringify = nativeJSON.stringify;
      exports.parse = nativeJSON.parse;
    }

    // Convenience aliases.
    var objectProto = Object.prototype,
        getClass = objectProto.toString,
        isProperty, forEach, undef;

    // 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 = exports.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 = exports.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]",
          dateClass = "[object Date]",
          numberClass = "[object Number]",
          stringClass = "[object String]",
          arrayClass = "[object Array]",
          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 = objectProto.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: 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" && objectTypes[typeof 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, useCharIndex = !charIndexBuggy || length > 10;
          var symbols = useCharIndex && (charIndexBuggy ? value.split("") : value);
          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 += useCharIndex ? symbols[index] : value.charAt(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.
        exports.stringify = function (source, filter, width) {
          var whitespace, callback, properties, className;
          if (objectTypes[typeof filter] && 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.
        exports.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;
        };
      }
    }

    exports["runInContext"] = runInContext;
    return exports;
  }

  if (freeExports && !isLoader) {
    // Export for CommonJS environments.
    runInContext(root, freeExports);
  } else {
    // Export for web browsers and JavaScript engines.
    var nativeJSON = root.JSON,
        previousJSON = root["JSON3"],
        isRestored = false;

    var JSON3 = runInContext(root, (root["JSON3"] = {
      // Public: Restores the original value of the global `JSON` object and
      // returns a reference to the `JSON3` object.
      "noConflict": function () {
        if (!isRestored) {
          isRestored = true;
          root.JSON = nativeJSON;
          root["JSON3"] = previousJSON;
          nativeJSON = previousJSON = null;
        }
        return JSON3;
      }
    }));

    root.JSON = {
      "parse": JSON3.parse,
      "stringify": JSON3.stringify
    };
  }

  // Export for asynchronous module loaders.
  if (isLoader) {
    define(function () {
      return JSON3;
    });
  }
}).call(this);

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],41:[function(require,module,exports){
(function (global){
/**
 * 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+$/;

module.exports = function parsejson(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))();
  }
};
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],42:[function(require,module,exports){
/**
 * Compiles a querystring
 * Returns string representation of the object
 *
 * @param {Object}
 * @api private
 */

exports.encode = 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 into an object
 *
 * @param {String} qs
 * @api private
 */

exports.decode = 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;
};

},{}],43:[function(require,module,exports){
/**
 * Parses an URI
 *
 * @author Steven Levithan <stevenlevithan.com> (MIT license)
 * @api private
 */

var re = /^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;

var parts = [
    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
];

module.exports = function parseuri(str) {
    var src = str,
        b = str.indexOf('['),
        e = str.indexOf(']');

    if (b != -1 && e != -1) {
        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);
    }

    var m = re.exec(str || ''),
        uri = {},
        i = 14;

    while (i--) {
        uri[parts[i]] = m[i] || '';
    }

    if (b != -1 && e != -1) {
        uri.source = src;
        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');
        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');
        uri.ipv6uri = true;
    }

    return uri;
};

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

/**
 * Module dependencies.
 */

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

/**
 * 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) {
  if (typeof uri === 'object') {
    opts = uri;
    uri = undefined;
  }

  opts = opts || {};

  var parsed = url(uri);
  var source = parsed.source;
  var id = parsed.id;
  var path = parsed.path;
  var sameNamespace = cache[id] && path in cache[id].nsps;
  var newConnection = opts.forceNew || opts['force new connection'] ||
                      false === opts.multiplex || sameNamespace;

  var io;

  if (newConnection) {
    debug('ignoring socket cache for %s', source);
    io = Manager(source, opts);
  } else {
    if (!cache[id]) {
      debug('new io instance for %s', source);
      cache[id] = Manager(source, opts);
    }
    io = cache[id];
  }
  if (parsed.query && !opts.query) {
    opts.query = parsed.query;
  } else if (opts && 'object' === typeof opts.query) {
    opts.query = encodeQueryString(opts.query);
  }
  return io.socket(parsed.path, opts);
}
/**
 *  Helper method to parse query objects to string.
 * @param {object} query
 * @returns {string}
 */
function encodeQueryString (obj) {
  var str = [];
  for (var p in obj) {
    if (obj.hasOwnProperty(p)) {
      str.push(encodeURIComponent(p) + '=' + encodeURIComponent(obj[p]));
    }
  }
  return str.join('&');
}
/**
 * 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":45,"./socket":47,"./url":48,"debug":50,"socket.io-parser":54}],45:[function(require,module,exports){

/**
 * Module dependencies.
 */

var eio = require('engine.io-client');
var Socket = require('./socket');
var Emitter = require('component-emitter');
var parser = require('socket.io-parser');
var on = require('./on');
var bind = require('component-bind');
var debug = require('debug')('socket.io-client:manager');
var indexOf = require('indexof');
var Backoff = require('backo2');

/**
 * IE6+ hasOwnProperty
 */

var has = Object.prototype.hasOwnProperty;

/**
 * Module exports
 */

module.exports = Manager;

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

function Manager (uri, opts) {
  if (!(this instanceof Manager)) return new Manager(uri, opts);
  if (uri && ('object' === typeof uri)) {
    opts = uri;
    uri = undefined;
  }
  opts = opts || {};

  opts.path = opts.path || '/socket.io';
  this.nsps = {};
  this.subs = [];
  this.opts = opts;
  this.reconnection(opts.reconnection !== false);
  this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);
  this.reconnectionDelay(opts.reconnectionDelay || 1000);
  this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);
  this.randomizationFactor(opts.randomizationFactor || 0.5);
  this.backoff = new Backoff({
    min: this.reconnectionDelay(),
    max: this.reconnectionDelayMax(),
    jitter: this.randomizationFactor()
  });
  this.timeout(null == opts.timeout ? 20000 : opts.timeout);
  this.readyState = 'closed';
  this.uri = uri;
  this.connecting = [];
  this.lastPing = null;
  this.encoding = false;
  this.packetBuffer = [];
  this.encoder = new parser.Encoder();
  this.decoder = new parser.Decoder();
  this.autoConnect = opts.autoConnect !== false;
  if (this.autoConnect) this.open();
}

/**
 * Propagate given event to sockets and emit on `this`
 *
 * @api private
 */

Manager.prototype.emitAll = function () {
  this.emit.apply(this, arguments);
  for (var nsp in this.nsps) {
    if (has.call(this.nsps, nsp)) {
      this.nsps[nsp].emit.apply(this.nsps[nsp], arguments);
    }
  }
};

/**
 * Update `socket.id` of all sockets
 *
 * @api private
 */

Manager.prototype.updateSocketIds = function () {
  for (var nsp in this.nsps) {
    if (has.call(this.nsps, nsp)) {
      this.nsps[nsp].id = this.engine.id;
    }
  }
};

/**
 * 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;
  this.backoff && this.backoff.setMin(v);
  return this;
};

Manager.prototype.randomizationFactor = function (v) {
  if (!arguments.length) return this._randomizationFactor;
  this._randomizationFactor = v;
  this.backoff && this.backoff.setJitter(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;
  this.backoff && this.backoff.setMax(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;
};

/**
 * Starts trying to reconnect if reconnection is enabled and we have not
 * started reconnecting yet
 *
 * @api private
 */

Manager.prototype.maybeReconnectOnOpen = function () {
  // Only try to reconnect if it's the first time we're connecting
  if (!this.reconnecting && this._reconnection && this.backoff.attempts === 0) {
    // keeps reconnection from firing twice for the same reconnection loop
    this.reconnect();
  }
};

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

Manager.prototype.open =
Manager.prototype.connect = function (fn, opts) {
  debug('readyState %s', this.readyState);
  if (~this.readyState.indexOf('open')) return this;

  debug('opening %s', this.uri);
  this.engine = eio(this.uri, this.opts);
  var socket = this.engine;
  var self = this;
  this.readyState = 'opening';
  this.skipReconnect = false;

  // emit `open`
  var openSub = on(socket, 'open', function () {
    self.onopen();
    fn && fn();
  });

  // emit `connect_error`
  var errorSub = on(socket, 'error', function (data) {
    debug('connect_error');
    self.cleanup();
    self.readyState = 'closed';
    self.emitAll('connect_error', data);
    if (fn) {
      var err = new Error('Connection error');
      err.data = data;
      fn(err);
    } else {
      // Only do this if there is no fn to handle the error
      self.maybeReconnectOnOpen();
    }
  });

  // 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.emitAll('connect_timeout', timeout);
    }, timeout);

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

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

  return this;
};

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

Manager.prototype.onopen = function () {
  debug('open');

  // 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, 'ping', bind(this, 'onping')));
  this.subs.push(on(socket, 'pong', bind(this, 'onpong')));
  this.subs.push(on(socket, 'error', bind(this, 'onerror')));
  this.subs.push(on(socket, 'close', bind(this, 'onclose')));
  this.subs.push(on(this.decoder, 'decoded', bind(this, 'ondecoded')));
};

/**
 * Called upon a ping.
 *
 * @api private
 */

Manager.prototype.onping = function () {
  this.lastPing = new Date();
  this.emitAll('ping');
};

/**
 * Called upon a packet.
 *
 * @api private
 */

Manager.prototype.onpong = function () {
  this.emitAll('pong', new Date() - this.lastPing);
};

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

Manager.prototype.ondata = function (data) {
  this.decoder.add(data);
};

/**
 * Called when parser fully decodes a packet.
 *
 * @api private
 */

Manager.prototype.ondecoded = function (packet) {
  this.emit('packet', packet);
};

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

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

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

Manager.prototype.socket = function (nsp, opts) {
  var socket = this.nsps[nsp];
  if (!socket) {
    socket = new Socket(this, nsp, opts);
    this.nsps[nsp] = socket;
    var self = this;
    socket.on('connecting', onConnecting);
    socket.on('connect', function () {
      socket.id = self.engine.id;
    });

    if (this.autoConnect) {
      // manually call here since connecting evnet is fired before listening
      onConnecting();
    }
  }

  function onConnecting () {
    if (!~indexOf(self.connecting, socket)) {
      self.connecting.push(socket);
    }
  }

  return socket;
};

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

Manager.prototype.destroy = function (socket) {
  var index = indexOf(this.connecting, socket);
  if (~index) this.connecting.splice(index, 1);
  if (this.connecting.length) return;

  this.close();
};

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

Manager.prototype.packet = function (packet) {
  debug('writing packet %j', packet);
  var self = this;
  if (packet.query && packet.type === 0) packet.nsp += '?' + packet.query;

  if (!self.encoding) {
    // encode, then write to engine with result
    self.encoding = true;
    this.encoder.encode(packet, function (encodedPackets) {
      for (var i = 0; i < encodedPackets.length; i++) {
        self.engine.write(encodedPackets[i], packet.options);
      }
      self.encoding = false;
      self.processPacketQueue();
    });
  } else { // add packet to the queue
    self.packetBuffer.push(packet);
  }
};

/**
 * If packet buffer is non-empty, begins encoding the
 * next packet in line.
 *
 * @api private
 */

Manager.prototype.processPacketQueue = function () {
  if (this.packetBuffer.length > 0 && !this.encoding) {
    var pack = this.packetBuffer.shift();
    this.packet(pack);
  }
};

/**
 * Clean up transport subscriptions and packet buffer.
 *
 * @api private
 */

Manager.prototype.cleanup = function () {
  debug('cleanup');

  var subsLength = this.subs.length;
  for (var i = 0; i < subsLength; i++) {
    var sub = this.subs.shift();
    sub.destroy();
  }

  this.packetBuffer = [];
  this.encoding = false;
  this.lastPing = null;

  this.decoder.destroy();
};

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

Manager.prototype.close =
Manager.prototype.disconnect = function () {
  debug('disconnect');
  this.skipReconnect = true;
  this.reconnecting = false;
  if ('opening' === this.readyState) {
    // `onclose` will not fire because
    // an open event never happened
    this.cleanup();
  }
  this.backoff.reset();
  this.readyState = 'closed';
  if (this.engine) this.engine.close();
};

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

Manager.prototype.onclose = function (reason) {
  debug('onclose');

  this.cleanup();
  this.backoff.reset();
  this.readyState = 'closed';
  this.emit('close', reason);

  if (this._reconnection && !this.skipReconnect) {
    this.reconnect();
  }
};

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

Manager.prototype.reconnect = function () {
  if (this.reconnecting || this.skipReconnect) return this;

  var self = this;

  if (this.backoff.attempts >= this._reconnectionAttempts) {
    debug('reconnect failed');
    this.backoff.reset();
    this.emitAll('reconnect_failed');
    this.reconnecting = false;
  } else {
    var delay = this.backoff.duration();
    debug('will wait %dms before reconnect attempt', delay);

    this.reconnecting = true;
    var timer = setTimeout(function () {
      if (self.skipReconnect) return;

      debug('attempting reconnect');
      self.emitAll('reconnect_attempt', self.backoff.attempts);
      self.emitAll('reconnecting', self.backoff.attempts);

      // check again for the case socket closed in above events
      if (self.skipReconnect) return;

      self.open(function (err) {
        if (err) {
          debug('reconnect attempt error');
          self.reconnecting = false;
          self.reconnect();
          self.emitAll('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.backoff.attempts;
  this.reconnecting = false;
  this.backoff.reset();
  this.updateSocketIds();
  this.emitAll('reconnect', attempt);
};

},{"./on":46,"./socket":47,"backo2":14,"component-bind":17,"component-emitter":49,"debug":50,"engine.io-client":20,"indexof":38,"socket.io-parser":54}],46:[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);
    }
  };
}

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

/**
 * Module dependencies.
 */

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

/**
 * Module exports.
 */

module.exports = exports = Socket;

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

var events = {
  connect: 1,
  connect_error: 1,
  connect_timeout: 1,
  connecting: 1,
  disconnect: 1,
  error: 1,
  reconnect: 1,
  reconnect_attempt: 1,
  reconnect_failed: 1,
  reconnect_error: 1,
  reconnecting: 1,
  ping: 1,
  pong: 1
};

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

var emit = Emitter.prototype.emit;

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

function Socket (io, nsp, opts) {
  this.io = io;
  this.nsp = nsp;
  this.json = this; // compat
  this.ids = 0;
  this.acks = {};
  this.receiveBuffer = [];
  this.sendBuffer = [];
  this.connected = false;
  this.disconnected = true;
  if (opts && opts.query) {
    this.query = opts.query;
  }
  if (this.io.autoConnect) this.open();
}

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

Emitter(Socket.prototype);

/**
 * Subscribe to open, close and packet events
 *
 * @api private
 */

Socket.prototype.subEvents = function () {
  if (this.subs) return;

  var io = this.io;
  this.subs = [
    on(io, 'open', bind(this, 'onopen')),
    on(io, 'packet', bind(this, 'onpacket')),
    on(io, 'close', bind(this, 'onclose'))
  ];
};

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

Socket.prototype.open =
Socket.prototype.connect = function () {
  if (this.connected) return this;

  this.subEvents();
  this.io.open(); // ensure open
  if ('open' === this.io.readyState) this.onopen();
  this.emit('connecting');
  return this;
};

/**
 * 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.hasOwnProperty(ev)) {
    emit.apply(this, arguments);
    return this;
  }

  var args = toArray(arguments);
  var parserType = parser.EVENT; // default
  if (hasBin(args)) { parserType = parser.BINARY_EVENT; } // binary
  var packet = { type: parserType, data: args };

  packet.options = {};
  packet.options.compress = !this.flags || false !== this.flags.compress;

  // 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++;
  }

  if (this.connected) {
    this.packet(packet);
  } else {
    this.sendBuffer.push(packet);
  }

  delete this.flags;

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

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

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

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

Socket.prototype.onclose = function (reason) {
  debug('close (%s)', reason);
  this.connected = false;
  this.disconnected = true;
  delete this.id;
  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.BINARY_EVENT:
      this.onevent(packet);
      break;

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

    case parser.BINARY_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 (null != packet.id) {
    debug('attaching ack callback to event');
    args.push(this.ack(packet.id));
  }

  if (this.connected) {
    emit.apply(this, args);
  } else {
    this.receiveBuffer.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;
    sent = true;
    var args = toArray(arguments);
    debug('sending ack %j', args);

    var type = hasBin(args) ? parser.BINARY_ACK : parser.ACK;
    self.packet({
      type: type,
      id: id,
      data: args
    });
  };
};

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

Socket.prototype.onack = function (packet) {
  var ack = this.acks[packet.id];
  if ('function' === typeof ack) {
    debug('calling ack %s with %j', packet.id, packet.data);
    ack.apply(this, packet.data);
    delete this.acks[packet.id];
  } else {
    debug('bad ack %s', 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 (received and emitted).
 *
 * @api private
 */

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

  for (i = 0; i < this.sendBuffer.length; i++) {
    this.packet(this.sendBuffer[i]);
  }
  this.sendBuffer = [];
};

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

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

/**
 * Called upon forced client/server side disconnections,
 * this method ensures the manager stops tracking us and
 * that reconnections don't get triggered for this.
 *
 * @api private.
 */

Socket.prototype.destroy = function () {
  if (this.subs) {
    // clean subscriptions to avoid reconnections
    for (var i = 0; i < this.subs.length; i++) {
      this.subs[i].destroy();
    }
    this.subs = null;
  }

  this.io.destroy(this);
};

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

Socket.prototype.close =
Socket.prototype.disconnect = function () {
  if (this.connected) {
    debug('performing disconnect (%s)', this.nsp);
    this.packet({ type: parser.DISCONNECT });
  }

  // remove socket from pool
  this.destroy();

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

/**
 * Sets the compress flag.
 *
 * @param {Boolean} if `true`, compresses the sending data
 * @return {Socket} self
 * @api public
 */

Socket.prototype.compress = function (compress) {
  this.flags = this.flags || {};
  this.flags.compress = compress;
  return this;
};

},{"./on":46,"component-bind":17,"component-emitter":49,"debug":50,"has-binary":36,"socket.io-parser":54,"to-array":59}],48:[function(require,module,exports){
(function (global){

/**
 * Module dependencies.
 */

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

/**
 * Module exports.
 */

module.exports = url;

/**
 * URL parser.
 *
 * @param {String} url
 * @param {Object} An object meant to mimic window.location.
 *                 Defaults to window.location.
 * @api public
 */

function url (uri, loc) {
  var obj = uri;

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

  // relative path support
  if ('string' === typeof uri) {
    if ('/' === uri.charAt(0)) {
      if ('/' === uri.charAt(1)) {
        uri = loc.protocol + uri;
      } else {
        uri = loc.host + uri;
      }
    }

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

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

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

  obj.path = obj.path || '/';

  var ipv6 = obj.host.indexOf(':') !== -1;
  var host = ipv6 ? '[' + obj.host + ']' : obj.host;

  // define unique id
  obj.id = obj.protocol + '://' + host + ':' + obj.port;
  // define href
  obj.href = obj.protocol + '://' + host + (loc && loc.port === obj.port ? '' : (':' + obj.port));

  return obj;
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"debug":50,"parseuri":43}],49:[function(require,module,exports){
arguments[4][30][0].apply(exports,arguments)
},{"dup":30}],50:[function(require,module,exports){
arguments[4][31][0].apply(exports,arguments)
},{"./debug":51,"_process":63,"dup":31}],51:[function(require,module,exports){
arguments[4][32][0].apply(exports,arguments)
},{"dup":32,"ms":52}],52:[function(require,module,exports){
arguments[4][33][0].apply(exports,arguments)
},{"dup":33}],53:[function(require,module,exports){
(function (global){
/*global Blob,File*/

/**
 * Module requirements
 */

var isArray = require('isarray');
var isBuf = require('./is-buffer');

/**
 * Replaces every Buffer | ArrayBuffer in packet with a numbered placeholder.
 * Anything with blobs or files should be fed through removeBlobs before coming
 * here.
 *
 * @param {Object} packet - socket.io event packet
 * @return {Object} with deconstructed packet and list of buffers
 * @api public
 */

exports.deconstructPacket = function(packet){
  var buffers = [];
  var packetData = packet.data;

  function _deconstructPacket(data) {
    if (!data) return data;

    if (isBuf(data)) {
      var placeholder = { _placeholder: true, num: buffers.length };
      buffers.push(data);
      return placeholder;
    } else if (isArray(data)) {
      var newData = new Array(data.length);
      for (var i = 0; i < data.length; i++) {
        newData[i] = _deconstructPacket(data[i]);
      }
      return newData;
    } else if ('object' == typeof data && !(data instanceof Date)) {
      var newData = {};
      for (var key in data) {
        newData[key] = _deconstructPacket(data[key]);
      }
      return newData;
    }
    return data;
  }

  var pack = packet;
  pack.data = _deconstructPacket(packetData);
  pack.attachments = buffers.length; // number of binary 'attachments'
  return {packet: pack, buffers: buffers};
};

/**
 * Reconstructs a binary packet from its placeholder packet and buffers
 *
 * @param {Object} packet - event packet with placeholders
 * @param {Array} buffers - binary buffers to put in placeholder positions
 * @return {Object} reconstructed packet
 * @api public
 */

exports.reconstructPacket = function(packet, buffers) {
  var curPlaceHolder = 0;

  function _reconstructPacket(data) {
    if (data && data._placeholder) {
      var buf = buffers[data.num]; // appropriate buffer (should be natural order anyway)
      return buf;
    } else if (isArray(data)) {
      for (var i = 0; i < data.length; i++) {
        data[i] = _reconstructPacket(data[i]);
      }
      return data;
    } else if (data && 'object' == typeof data) {
      for (var key in data) {
        data[key] = _reconstructPacket(data[key]);
      }
      return data;
    }
    return data;
  }

  packet.data = _reconstructPacket(packet.data);
  packet.attachments = undefined; // no longer useful
  return packet;
};

/**
 * Asynchronously removes Blobs or Files from data via
 * FileReader's readAsArrayBuffer method. Used before encoding
 * data as msgpack. Calls callback with the blobless data.
 *
 * @param {Object} data
 * @param {Function} callback
 * @api private
 */

exports.removeBlobs = function(data, callback) {
  function _removeBlobs(obj, curKey, containingObject) {
    if (!obj) return obj;

    // convert any blob
    if ((global.Blob && obj instanceof Blob) ||
        (global.File && obj instanceof File)) {
      pendingBlobs++;

      // async filereader
      var fileReader = new FileReader();
      fileReader.onload = function() { // this.result == arraybuffer
        if (containingObject) {
          containingObject[curKey] = this.result;
        }
        else {
          bloblessData = this.result;
        }

        // if nothing pending its callback time
        if(! --pendingBlobs) {
          callback(bloblessData);
        }
      };

      fileReader.readAsArrayBuffer(obj); // blob -> arraybuffer
    } else if (isArray(obj)) { // handle array
      for (var i = 0; i < obj.length; i++) {
        _removeBlobs(obj[i], i, obj);
      }
    } else if (obj && 'object' == typeof obj && !isBuf(obj)) { // and object
      for (var key in obj) {
        _removeBlobs(obj[key], key, obj);
      }
    }
  }

  var pendingBlobs = 0;
  var bloblessData = data;
  _removeBlobs(bloblessData);
  if (!pendingBlobs) {
    callback(bloblessData);
  }
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./is-buffer":55,"isarray":39}],54:[function(require,module,exports){

/**
 * Module dependencies.
 */

var debug = require('debug')('socket.io-parser');
var json = require('json3');
var Emitter = require('component-emitter');
var binary = require('./binary');
var isBuf = require('./is-buffer');

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

exports.protocol = 4;

/**
 * Packet types.
 *
 * @api public
 */

exports.types = [
  'CONNECT',
  'DISCONNECT',
  'EVENT',
  'ACK',
  'ERROR',
  'BINARY_EVENT',
  'BINARY_ACK'
];

/**
 * 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;

/**
 * Packet type 'binary event'
 *
 * @api public
 */

exports.BINARY_EVENT = 5;

/**
 * Packet type `binary ack`. For acks with binary arguments.
 *
 * @api public
 */

exports.BINARY_ACK = 6;

/**
 * Encoder constructor.
 *
 * @api public
 */

exports.Encoder = Encoder;

/**
 * Decoder constructor.
 *
 * @api public
 */

exports.Decoder = Decoder;

/**
 * A socket.io Encoder instance
 *
 * @api public
 */

function Encoder() {}

/**
 * Encode a packet as a single string if non-binary, or as a
 * buffer sequence, depending on packet type.
 *
 * @param {Object} obj - packet object
 * @param {Function} callback - function to handle encodings (likely engine.write)
 * @return Calls callback with Array of encodings
 * @api public
 */

Encoder.prototype.encode = function(obj, callback){
  debug('encoding packet %j', obj);

  if (exports.BINARY_EVENT == obj.type || exports.BINARY_ACK == obj.type) {
    encodeAsBinary(obj, callback);
  }
  else {
    var encoding = encodeAsString(obj);
    callback([encoding]);
  }
};

/**
 * Encode packet as string.
 *
 * @param {Object} packet
 * @return {String} encoded
 * @api private
 */

function encodeAsString(obj) {
  var str = '';
  var nsp = false;

  // first is type
  str += obj.type;

  // attachments if we have them
  if (exports.BINARY_EVENT == obj.type || exports.BINARY_ACK == obj.type) {
    str += obj.attachments;
    str += '-';
  }

  // 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;
}

/**
 * Encode packet as 'buffer sequence' by removing blobs, and
 * deconstructing packet into object with placeholders and
 * a list of buffers.
 *
 * @param {Object} packet
 * @return {Buffer} encoded
 * @api private
 */

function encodeAsBinary(obj, callback) {

  function writeEncoding(bloblessData) {
    var deconstruction = binary.deconstructPacket(bloblessData);
    var pack = encodeAsString(deconstruction.packet);
    var buffers = deconstruction.buffers;

    buffers.unshift(pack); // add packet info to beginning of data list
    callback(buffers); // write all the buffers
  }

  binary.removeBlobs(obj, writeEncoding);
}

/**
 * A socket.io Decoder instance
 *
 * @return {Object} decoder
 * @api public
 */

function Decoder() {
  this.reconstructor = null;
}

/**
 * Mix in `Emitter` with Decoder.
 */

Emitter(Decoder.prototype);

/**
 * Decodes an ecoded packet string into packet JSON.
 *
 * @param {String} obj - encoded packet
 * @return {Object} packet
 * @api public
 */

Decoder.prototype.add = function(obj) {
  var packet;
  if ('string' == typeof obj) {
    packet = decodeString(obj);
    if (exports.BINARY_EVENT == packet.type || exports.BINARY_ACK == packet.type) { // binary packet's json
      this.reconstructor = new BinaryReconstructor(packet);

      // no attachments, labeled binary but no binary data to follow
      if (this.reconstructor.reconPack.attachments === 0) {
        this.emit('decoded', packet);
      }
    } else { // non-binary full packet
      this.emit('decoded', packet);
    }
  }
  else if (isBuf(obj) || obj.base64) { // raw binary data
    if (!this.reconstructor) {
      throw new Error('got binary data when not reconstructing a packet');
    } else {
      packet = this.reconstructor.takeBinaryData(obj);
      if (packet) { // received final buffer
        this.reconstructor = null;
        this.emit('decoded', packet);
      }
    }
  }
  else {
    throw new Error('Unknown type: ' + obj);
  }
};

/**
 * Decode a packet String (JSON data)
 *
 * @param {String} str
 * @return {Object} packet
 * @api private
 */

function decodeString(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 attachments if type binary
  if (exports.BINARY_EVENT == p.type || exports.BINARY_ACK == p.type) {
    var buf = '';
    while (str.charAt(++i) != '-') {
      buf += str.charAt(i);
      if (i == str.length) break;
    }
    if (buf != Number(buf) || str.charAt(i) != '-') {
      throw new Error('Illegal attachments');
    }
    p.attachments = Number(buf);
  }

  // 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 == 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 == str.length) break;
    }
    p.id = Number(p.id);
  }

  // look up json data
  if (str.charAt(++i)) {
    p = tryParse(p, str.substr(i));
  }

  debug('decoded %s as %j', str, p);
  return p;
}

function tryParse(p, str) {
  try {
    p.data = json.parse(str);
  } catch(e){
    return error();
  }
  return p; 
};

/**
 * Deallocates a parser's resources
 *
 * @api public
 */

Decoder.prototype.destroy = function() {
  if (this.reconstructor) {
    this.reconstructor.finishedReconstruction();
  }
};

/**
 * A manager of a binary event's 'buffer sequence'. Should
 * be constructed whenever a packet of type BINARY_EVENT is
 * decoded.
 *
 * @param {Object} packet
 * @return {BinaryReconstructor} initialized reconstructor
 * @api private
 */

function BinaryReconstructor(packet) {
  this.reconPack = packet;
  this.buffers = [];
}

/**
 * Method to be called when binary data received from connection
 * after a BINARY_EVENT packet.
 *
 * @param {Buffer | ArrayBuffer} binData - the raw binary data received
 * @return {null | Object} returns null if more binary data is expected or
 *   a reconstructed packet object if all buffers have been received.
 * @api private
 */

BinaryReconstructor.prototype.takeBinaryData = function(binData) {
  this.buffers.push(binData);
  if (this.buffers.length == this.reconPack.attachments) { // done with buffer list
    var packet = binary.reconstructPacket(this.reconPack, this.buffers);
    this.finishedReconstruction();
    return packet;
  }
  return null;
};

/**
 * Cleans up binary packet reconstruction variables.
 *
 * @api private
 */

BinaryReconstructor.prototype.finishedReconstruction = function() {
  this.reconPack = null;
  this.buffers = [];
};

function error(data){
  return {
    type: exports.ERROR,
    data: 'parser error'
  };
}

},{"./binary":53,"./is-buffer":55,"component-emitter":18,"debug":56,"json3":40}],55:[function(require,module,exports){
(function (global){

module.exports = isBuf;

/**
 * Returns true if obj is a buffer or an arraybuffer.
 *
 * @api private
 */

function isBuf(obj) {
  return (global.Buffer && global.Buffer.isBuffer(obj)) ||
         (global.ArrayBuffer && obj instanceof ArrayBuffer);
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],56:[function(require,module,exports){

/**
 * This is the web browser implementation of `debug()`.
 *
 * Expose `debug()` as the module.
 */

exports = module.exports = require('./debug');
exports.log = log;
exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
exports.storage = 'undefined' != typeof chrome
               && 'undefined' != typeof chrome.storage
                  ? chrome.storage.local
                  : localstorage();

/**
 * Colors.
 */

exports.colors = [
  'lightseagreen',
  'forestgreen',
  'goldenrod',
  'dodgerblue',
  'darkorchid',
  'crimson'
];

/**
 * Currently only WebKit-based Web Inspectors, Firefox >= v31,
 * and the Firebug extension (any Firefox version) are known
 * to support "%c" CSS customizations.
 *
 * TODO: add a `localStorage` variable to explicitly enable/disable colors
 */

function useColors() {
  // is webkit? http://stackoverflow.com/a/16459606/376773
  return ('WebkitAppearance' in document.documentElement.style) ||
    // is firebug? http://stackoverflow.com/a/398120/376773
    (window.console && (console.firebug || (console.exception && console.table))) ||
    // is firefox >= v31?
    // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
    (navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31);
}

/**
 * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
 */

exports.formatters.j = function(v) {
  return JSON.stringify(v);
};


/**
 * Colorize log arguments if enabled.
 *
 * @api public
 */

function formatArgs() {
  var args = arguments;
  var useColors = this.useColors;

  args[0] = (useColors ? '%c' : '')
    + this.namespace
    + (useColors ? ' %c' : ' ')
    + args[0]
    + (useColors ? '%c ' : ' ')
    + '+' + exports.humanize(this.diff);

  if (!useColors) return args;

  var c = 'color: ' + this.color;
  args = [args[0], c, 'color: inherit'].concat(Array.prototype.slice.call(args, 1));

  // the final "%c" is somewhat tricky, because there could be other
  // arguments passed either before or after the %c, so we need to
  // figure out the correct index to insert the CSS into
  var index = 0;
  var lastC = 0;
  args[0].replace(/%[a-z%]/g, function(match) {
    if ('%%' === match) return;
    index++;
    if ('%c' === match) {
      // we only are interested in the *last* %c
      // (the user may have provided their own)
      lastC = index;
    }
  });

  args.splice(lastC, 0, c);
  return args;
}

/**
 * Invokes `console.log()` when available.
 * No-op when `console.log` is not a "function".
 *
 * @api public
 */

function log() {
  // this hackery is required for IE8/9, where
  // the `console.log` function doesn't have 'apply'
  return 'object' === typeof console
    && console.log
    && Function.prototype.apply.call(console.log, console, arguments);
}

/**
 * Save `namespaces`.
 *
 * @param {String} namespaces
 * @api private
 */

function save(namespaces) {
  try {
    if (null == namespaces) {
      exports.storage.removeItem('debug');
    } else {
      exports.storage.debug = namespaces;
    }
  } catch(e) {}
}

/**
 * Load `namespaces`.
 *
 * @return {String} returns the previously persisted debug modes
 * @api private
 */

function load() {
  var r;
  try {
    r = exports.storage.debug;
  } catch(e) {}
  return r;
}

/**
 * Enable namespaces listed in `localStorage.debug` initially.
 */

exports.enable(load());

/**
 * Localstorage attempts to return the localstorage.
 *
 * This is necessary because safari throws
 * when a user disables cookies/localstorage
 * and you attempt to access it.
 *
 * @return {LocalStorage}
 * @api private
 */

function localstorage(){
  try {
    return window.localStorage;
  } catch (e) {}
}

},{"./debug":57}],57:[function(require,module,exports){

/**
 * This is the common logic for both the Node.js and web browser
 * implementations of `debug()`.
 *
 * Expose `debug()` as the module.
 */

exports = module.exports = debug;
exports.coerce = coerce;
exports.disable = disable;
exports.enable = enable;
exports.enabled = enabled;
exports.humanize = require('ms');

/**
 * The currently active debug mode names, and names to skip.
 */

exports.names = [];
exports.skips = [];

/**
 * Map of special "%n" handling functions, for the debug "format" argument.
 *
 * Valid key names are a single, lowercased letter, i.e. "n".
 */

exports.formatters = {};

/**
 * Previously assigned color.
 */

var prevColor = 0;

/**
 * Previous log timestamp.
 */

var prevTime;

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

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

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

function debug(namespace) {

  // define the `disabled` version
  function disabled() {
  }
  disabled.enabled = false;

  // define the `enabled` version
  function enabled() {

    var self = enabled;

    // set `diff` timestamp
    var curr = +new Date();
    var ms = curr - (prevTime || curr);
    self.diff = ms;
    self.prev = prevTime;
    self.curr = curr;
    prevTime = curr;

    // add the `color` if not set
    if (null == self.useColors) self.useColors = exports.useColors();
    if (null == self.color && self.useColors) self.color = selectColor();

    var args = Array.prototype.slice.call(arguments);

    args[0] = exports.coerce(args[0]);

    if ('string' !== typeof args[0]) {
      // anything else let's inspect with %o
      args = ['%o'].concat(args);
    }

    // apply any `formatters` transformations
    var index = 0;
    args[0] = args[0].replace(/%([a-z%])/g, function(match, format) {
      // if we encounter an escaped % then don't increase the array index
      if (match === '%%') return match;
      index++;
      var formatter = exports.formatters[format];
      if ('function' === typeof formatter) {
        var val = args[index];
        match = formatter.call(self, val);

        // now we need to remove `args[index]` since it's inlined in the `format`
        args.splice(index, 1);
        index--;
      }
      return match;
    });

    if ('function' === typeof exports.formatArgs) {
      args = exports.formatArgs.apply(self, args);
    }
    var logFn = enabled.log || exports.log || console.log.bind(console);
    logFn.apply(self, args);
  }
  enabled.enabled = true;

  var fn = exports.enabled(namespace) ? enabled : disabled;

  fn.namespace = namespace;

  return fn;
}

/**
 * Enables a debug mode by namespaces. This can include modes
 * separated by a colon and wildcards.
 *
 * @param {String} namespaces
 * @api public
 */

function enable(namespaces) {
  exports.save(namespaces);

  var split = (namespaces || '').split(/[\s,]+/);
  var len = split.length;

  for (var i = 0; i < len; i++) {
    if (!split[i]) continue; // ignore empty strings
    namespaces = split[i].replace(/\*/g, '.*?');
    if (namespaces[0] === '-') {
      exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
    } else {
      exports.names.push(new RegExp('^' + namespaces + '$'));
    }
  }
}

/**
 * Disable debug output.
 *
 * @api public
 */

function disable() {
  exports.enable('');
}

/**
 * Returns true if the given mode name is enabled, false otherwise.
 *
 * @param {String} name
 * @return {Boolean}
 * @api public
 */

function enabled(name) {
  var i, len;
  for (i = 0, len = exports.skips.length; i < len; i++) {
    if (exports.skips[i].test(name)) {
      return false;
    }
  }
  for (i = 0, len = exports.names.length; i < len; i++) {
    if (exports.names[i].test(name)) {
      return true;
    }
  }
  return false;
}

/**
 * Coerce `val`.
 *
 * @param {Mixed} val
 * @return {Mixed}
 * @api private
 */

function coerce(val) {
  if (val instanceof Error) return val.stack || val.message;
  return val;
}

},{"ms":58}],58:[function(require,module,exports){
/**
 * Helpers.
 */

var s = 1000;
var m = s * 60;
var h = m * 60;
var d = h * 24;
var y = d * 365.25;

/**
 * Parse or format the given `val`.
 *
 * Options:
 *
 *  - `long` verbose formatting [false]
 *
 * @param {String|Number} val
 * @param {Object} options
 * @return {String|Number}
 * @api public
 */

module.exports = function(val, options){
  options = options || {};
  if ('string' == typeof val) return parse(val);
  return options.long
    ? long(val)
    : short(val);
};

/**
 * Parse the given `str` and return milliseconds.
 *
 * @param {String} str
 * @return {Number}
 * @api private
 */

function parse(str) {
  str = '' + str;
  if (str.length > 10000) return;
  var match = /^((?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|years?|yrs?|y)?$/i.exec(str);
  if (!match) return;
  var n = parseFloat(match[1]);
  var type = (match[2] || 'ms').toLowerCase();
  switch (type) {
    case 'years':
    case 'year':
    case 'yrs':
    case 'yr':
    case 'y':
      return n * y;
    case 'days':
    case 'day':
    case 'd':
      return n * d;
    case 'hours':
    case 'hour':
    case 'hrs':
    case 'hr':
    case 'h':
      return n * h;
    case 'minutes':
    case 'minute':
    case 'mins':
    case 'min':
    case 'm':
      return n * m;
    case 'seconds':
    case 'second':
    case 'secs':
    case 'sec':
    case 's':
      return n * s;
    case 'milliseconds':
    case 'millisecond':
    case 'msecs':
    case 'msec':
    case 'ms':
      return n;
  }
}

/**
 * Short format for `ms`.
 *
 * @param {Number} ms
 * @return {String}
 * @api private
 */

function short(ms) {
  if (ms >= d) return Math.round(ms / d) + 'd';
  if (ms >= h) return Math.round(ms / h) + 'h';
  if (ms >= m) return Math.round(ms / m) + 'm';
  if (ms >= s) return Math.round(ms / s) + 's';
  return ms + 'ms';
}

/**
 * Long format for `ms`.
 *
 * @param {Number} ms
 * @return {String}
 * @api private
 */

function long(ms) {
  return plural(ms, d, 'day')
    || plural(ms, h, 'hour')
    || plural(ms, m, 'minute')
    || plural(ms, s, 'second')
    || ms + ' ms';
}

/**
 * Pluralization helper.
 */

function plural(ms, n, name) {
  if (ms < n) return;
  if (ms < n * 1.5) return Math.floor(ms / n) + ' ' + name;
  return Math.ceil(ms / n) + ' ' + name + 's';
}

},{}],59:[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
}

},{}],60:[function(require,module,exports){
(function (global){
/*! https://mths.be/wtf8 v1.0.0 by @mathias */
;(function(root) {

	// Detect free variables `exports`
	var freeExports = typeof exports == 'object' && exports;

	// Detect free variable `module`
	var freeModule = typeof module == 'object' && module &&
		module.exports == freeExports && module;

	// Detect free variable `global`, from Node.js or Browserified code,
	// and use it as `root`
	var freeGlobal = typeof global == 'object' && global;
	if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {
		root = freeGlobal;
	}

	/*--------------------------------------------------------------------------*/

	var stringFromCharCode = String.fromCharCode;

	// Taken from https://mths.be/punycode
	function ucs2decode(string) {
		var output = [];
		var counter = 0;
		var length = string.length;
		var value;
		var extra;
		while (counter < length) {
			value = string.charCodeAt(counter++);
			if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
				// high surrogate, and there is a next character
				extra = string.charCodeAt(counter++);
				if ((extra & 0xFC00) == 0xDC00) { // low surrogate
					output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
				} else {
					// unmatched surrogate; only append this code unit, in case the next
					// code unit is the high surrogate of a surrogate pair
					output.push(value);
					counter--;
				}
			} else {
				output.push(value);
			}
		}
		return output;
	}

	// Taken from https://mths.be/punycode
	function ucs2encode(array) {
		var length = array.length;
		var index = -1;
		var value;
		var output = '';
		while (++index < length) {
			value = array[index];
			if (value > 0xFFFF) {
				value -= 0x10000;
				output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
				value = 0xDC00 | value & 0x3FF;
			}
			output += stringFromCharCode(value);
		}
		return output;
	}

	/*--------------------------------------------------------------------------*/

	function createByte(codePoint, shift) {
		return stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80);
	}

	function encodeCodePoint(codePoint) {
		if ((codePoint & 0xFFFFFF80) == 0) { // 1-byte sequence
			return stringFromCharCode(codePoint);
		}
		var symbol = '';
		if ((codePoint & 0xFFFFF800) == 0) { // 2-byte sequence
			symbol = stringFromCharCode(((codePoint >> 6) & 0x1F) | 0xC0);
		}
		else if ((codePoint & 0xFFFF0000) == 0) { // 3-byte sequence
			symbol = stringFromCharCode(((codePoint >> 12) & 0x0F) | 0xE0);
			symbol += createByte(codePoint, 6);
		}
		else if ((codePoint & 0xFFE00000) == 0) { // 4-byte sequence
			symbol = stringFromCharCode(((codePoint >> 18) & 0x07) | 0xF0);
			symbol += createByte(codePoint, 12);
			symbol += createByte(codePoint, 6);
		}
		symbol += stringFromCharCode((codePoint & 0x3F) | 0x80);
		return symbol;
	}

	function wtf8encode(string) {
		var codePoints = ucs2decode(string);
		var length = codePoints.length;
		var index = -1;
		var codePoint;
		var byteString = '';
		while (++index < length) {
			codePoint = codePoints[index];
			byteString += encodeCodePoint(codePoint);
		}
		return byteString;
	}

	/*--------------------------------------------------------------------------*/

	function readContinuationByte() {
		if (byteIndex >= byteCount) {
			throw Error('Invalid byte index');
		}

		var continuationByte = byteArray[byteIndex] & 0xFF;
		byteIndex++;

		if ((continuationByte & 0xC0) == 0x80) {
			return continuationByte & 0x3F;
		}

		// If we end up here, it’s not a continuation byte.
		throw Error('Invalid continuation byte');
	}

	function decodeSymbol() {
		var byte1;
		var byte2;
		var byte3;
		var byte4;
		var codePoint;

		if (byteIndex > byteCount) {
			throw Error('Invalid byte index');
		}

		if (byteIndex == byteCount) {
			return false;
		}

		// Read the first byte.
		byte1 = byteArray[byteIndex] & 0xFF;
		byteIndex++;

		// 1-byte sequence (no continuation bytes)
		if ((byte1 & 0x80) == 0) {
			return byte1;
		}

		// 2-byte sequence
		if ((byte1 & 0xE0) == 0xC0) {
			var byte2 = readContinuationByte();
			codePoint = ((byte1 & 0x1F) << 6) | byte2;
			if (codePoint >= 0x80) {
				return codePoint;
			} else {
				throw Error('Invalid continuation byte');
			}
		}

		// 3-byte sequence (may include unpaired surrogates)
		if ((byte1 & 0xF0) == 0xE0) {
			byte2 = readContinuationByte();
			byte3 = readContinuationByte();
			codePoint = ((byte1 & 0x0F) << 12) | (byte2 << 6) | byte3;
			if (codePoint >= 0x0800) {
				return codePoint;
			} else {
				throw Error('Invalid continuation byte');
			}
		}

		// 4-byte sequence
		if ((byte1 & 0xF8) == 0xF0) {
			byte2 = readContinuationByte();
			byte3 = readContinuationByte();
			byte4 = readContinuationByte();
			codePoint = ((byte1 & 0x0F) << 0x12) | (byte2 << 0x0C) |
				(byte3 << 0x06) | byte4;
			if (codePoint >= 0x010000 && codePoint <= 0x10FFFF) {
				return codePoint;
			}
		}

		throw Error('Invalid WTF-8 detected');
	}

	var byteArray;
	var byteCount;
	var byteIndex;
	function wtf8decode(byteString) {
		byteArray = ucs2decode(byteString);
		byteCount = byteArray.length;
		byteIndex = 0;
		var codePoints = [];
		var tmp;
		while ((tmp = decodeSymbol()) !== false) {
			codePoints.push(tmp);
		}
		return ucs2encode(codePoints);
	}

	/*--------------------------------------------------------------------------*/

	var wtf8 = {
		'version': '1.0.0',
		'encode': wtf8encode,
		'decode': wtf8decode
	};

	// Some AMD build optimizers, like r.js, check for specific condition patterns
	// like the following:
	if (
		typeof define == 'function' &&
		typeof define.amd == 'object' &&
		define.amd
	) {
		define(function() {
			return wtf8;
		});
	}	else if (freeExports && !freeExports.nodeType) {
		if (freeModule) { // in Node.js or RingoJS v0.8.0+
			freeModule.exports = wtf8;
		} else { // in Narwhal or RingoJS v0.7.0-
			var object = {};
			var hasOwnProperty = object.hasOwnProperty;
			for (var key in wtf8) {
				hasOwnProperty.call(wtf8, key) && (freeExports[key] = wtf8[key]);
			}
		}
	} else { // in Rhino or a web browser
		root.wtf8 = wtf8;
	}

}(this));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],61:[function(require,module,exports){
'use strict';

var alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')
  , length = 64
  , map = {}
  , seed = 0
  , i = 0
  , prev;

/**
 * Return a string representing the specified number.
 *
 * @param {Number} num The number to convert.
 * @returns {String} The string representation of the number.
 * @api public
 */
function encode(num) {
  var encoded = '';

  do {
    encoded = alphabet[num % length] + encoded;
    num = Math.floor(num / length);
  } while (num > 0);

  return encoded;
}

/**
 * Return the integer value specified by the given string.
 *
 * @param {String} str The string to convert.
 * @returns {Number} The integer value represented by the string.
 * @api public
 */
function decode(str) {
  var decoded = 0;

  for (i = 0; i < str.length; i++) {
    decoded = decoded * length + map[str.charAt(i)];
  }

  return decoded;
}

/**
 * Yeast: A tiny growing id generator.
 *
 * @returns {String} A unique id.
 * @api public
 */
function yeast() {
  var now = encode(+new Date());

  if (now !== prev) return seed = 0, prev = now;
  return now +'.'+ encode(seed++);
}

//
// Map each character to its index.
//
for (; i < length; i++) map[alphabet[i]] = i;

//
// Expose the `yeast`, `encode` and `decode` functions.
//
yeast.encode = encode;
yeast.decode = decode;
module.exports = yeast;

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

},{}],63:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

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

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}]},{},[4]);