From a8fb9c3e5ca4e089b8161b0e0f0150c1100d68c3 Mon Sep 17 00:00:00 2001
From: jak1 <mike.wollmann@gmail.com>
Date: Sun, 1 Aug 2021 17:02:17 +0200
Subject: added some more features, and fixed some bugs (was to lazy to commit
 every change *hides)

---
 app.js                                     |  467 ++-
 client/assets/maps/002-1.tmx               |  130 +
 client/assets/npcs.xml                     |   20 +
 client/assets/tilesets/2006__desert1.png   |  Bin 0 -> 295336 bytes
 client/assets/tilesets/2006__desert1.tsx   |    4 +
 client/assets/tilesets/2006__desert2.png   |  Bin 0 -> 179534 bytes
 client/assets/tilesets/2006__desert2.tsx   |    4 +
 client/assets/tilesets/2006__desert_x2.png |  Bin 0 -> 18093 bytes
 client/assets/tilesets/2006__desert_x3.png |  Bin 0 -> 21957 bytes
 client/assets/tilesets/collision.png       |  Bin 0 -> 177 bytes
 client/consts.js                           |   12 +-
 client/index.html                          |  187 +-
 client/lib/socket.io.js                    | 6081 ++++++++++++++++++++++++++++
 client/lib/socket.io.js.map                |    1 +
 client/lib/socket.io.min.js                |    7 +
 client/lib/socket.io.min.js.map            |    1 +
 client/lib/socket.io.msgpack.min.js        |    7 +
 client/lib/socket.io.msgpack.min.js.map    |    1 +
 client/tmxloader.js                        |  190 +-
 docs/ChangeLog                             |    3 +
 docs/ClassStructure.md                     |   15 +
 server/Entities/Bullet.js                  |   83 +
 server/Entities/Entity.js                  |   28 +
 server/Entities/Player.js                  |  156 +
 24 files changed, 7071 insertions(+), 326 deletions(-)
 create mode 100644 client/assets/maps/002-1.tmx
 create mode 100644 client/assets/npcs.xml
 create mode 100644 client/assets/tilesets/2006__desert1.png
 create mode 100644 client/assets/tilesets/2006__desert1.tsx
 create mode 100644 client/assets/tilesets/2006__desert2.png
 create mode 100644 client/assets/tilesets/2006__desert2.tsx
 create mode 100644 client/assets/tilesets/2006__desert_x2.png
 create mode 100644 client/assets/tilesets/2006__desert_x3.png
 create mode 100644 client/assets/tilesets/collision.png
 create mode 100644 client/lib/socket.io.js
 create mode 100644 client/lib/socket.io.js.map
 create mode 100644 client/lib/socket.io.min.js
 create mode 100644 client/lib/socket.io.min.js.map
 create mode 100644 client/lib/socket.io.msgpack.min.js
 create mode 100644 client/lib/socket.io.msgpack.min.js.map
 create mode 100644 docs/ChangeLog
 create mode 100644 docs/ClassStructure.md
 create mode 100644 server/Entities/Bullet.js
 create mode 100644 server/Entities/Entity.js
 create mode 100644 server/Entities/Player.js

diff --git a/app.js b/app.js
index 42f1e75..d219310 100644
--- a/app.js
+++ b/app.js
@@ -1,3 +1,4 @@
+var consts = require('./client/consts')
 var mongojs = require("mongojs");
 var db = mongojs("localhost:27017/ThePixelWorld", ["account","progress"]);
 
@@ -14,229 +15,12 @@ app.use('/client', express.static(__dirname + '/client'));
 
 serv.listen(2000);
 console.log("Server started.");
-var DEBUG = true;
 var SOCKET_LIST = {};
 
-var Entity = function(){
-    var self = {
-        x:250,
-        y:250,
-        map: '001-1',
-        speedX:0,
-        speedY:0,
-        id:"",
-    }
-    self.update = function(){
-        self.updatePosition();
-    }
-    self.updatePosition = function(){
-        self.x += self.speedX;
-        self.y += self.speedY;
-    }
-    self.getDistance = function(pt){
-        return Math.sqrt(Math.pow(self.x-pt.x,2)) + Math.pow(self.y-pt.y,2);
-    }
-    return self;
-}
-
-var Player = function(id){
-    var self = Entity();
-        self.id = id;
-        self.number = "" + Math.floor(10 * Math.random());
-        self.pressingRight = false;
-        self.pressingLeft = false;
-        self.pressingUp = false;
-        self.pressingDown = false;
-        self.pressingAttack = false;
-        self.mouseAngle = 0;
-        self.maxSpeed = 10;
-        self.hp = 10;
-        self.hpMax = 10;
-        self.score = 0;
-
-    var super_update = self.update;
-    self.update = function(){
-        self.updateSpeed();
-        super_update();
-        if(self.pressingAttack){
-            self.shootBullet(self.mouseAngle);
-        }
-    }
-
-    self.shootBullet = function(angle){
-        var b = Bullet(self.id, angle);
-        b.x = self.x
-        b.y = self.y
-    }
-
-    self.updateSpeed = function(){
-        if(self.pressingRight)
-            self.speedX = self.maxSpeed;
-        else if(self.pressingLeft)
-            self.speedX = -self.maxSpeed;
-        else
-            self.speedX = 0;
-
-        if(self.pressingUp)
-            self.speedY = -self.maxSpeed;
-        else if(self.pressingDown)
-            self.speedY = self.maxSpeed;
-        else
-            self.speedY = 0;
-    }
-
-    self.getInitPack = function() {
-        return {
-            id:self.id,
-            x:self.x,
-            y:self.y,
-            map:self.map,
-            number:self.number,
-            hp:self.hp,
-            hpMax:self.hpMax,
-            score:self.score,
-        };
-    }
-    self.getUpdatePack = function() {
-        return {
-            id:self.id,
-            x:self.x,
-            y:self.y,
-            map:self.map,
-            score:self.score,
-            hp:self.hp,
-        };
-    }
-    Player.list[id] = self;
-    initPack.player.push(self.getInitPack());
-    return self;
-}
-
-Player.list = {};
-Player.onConnect = function(socket){
-    var player = Player(socket.id);
+const Entity = require('./server/Entities/Entity')
+const Player = require('./server/Entities/Player')
+const Bullet = require('./server/Entities/Bullet')
 
-    socket.on('keyPress', function(data){
-        if (data.inputId === 'left')
-            player.pressingLeft = data.state;
-        else if (data.inputId === 'right')
-            player.pressingRight = data.state;
-        else if (data.inputId === 'up')
-            player.pressingUp = data.state;
-        else if (data.inputId === 'down')
-            player.pressingDown = data.state;
-        else if (data.inputId === 'attack')
-            player.pressingAttack = data.state;
-        else if (data.inputId === 'mouseAngle')
-            player.mouseAngle = data.state;
-    });
-
-    socket.emit('init',{
-        selfId:socket.id,
-        player:Player.getAllInitPack(),
-        bullet:Bullet.getAllInitPack(),
-    });
-}
-
-Player.getAllInitPack = function(){
-    var players = [];
-    for(var i in Player.list)
-        players.push(Player.list[i].getInitPack());
-    return players;
-}
-
-Player.onDisconnect = function(socket){
-    delete Player.list[socket.id];
-    removePack.player.push(socket.id);
-}
-
-Player.update = function(){
-    var pack = [];
-    for(var i in Player.list){
-        var player = Player.list[i];
-        player.update();
-        pack.push(player.getUpdatePack());
-    }
-    return pack;
-}
-
-var Bullet = function(parent, angle) {
-    var self = Entity();
-    self.id = Math.random();
-    self.speedX = Math.cos(angle/180*Math.PI) *10;
-    self.speedY = Math.sin(angle/180*Math.PI) *10;
-    self.parent = parent;
-    self.timer = 0;
-    self.toRemove = false;
-    var super_update = self.update;
-    self.update = function(){
-        if (self.timer++ > 100)
-            self.toRemove = true;
-        super_update();
-        for (var i in Player.list){
-            var p = Player.list[i];
-            if(self.getDistance(p) < 32 && self.parent !== p.id){
-                p.hp -= 1;
-                if (p.hp <= 0){
-                    var shooter = Player.list[self.parent];
-                    if (shooter)
-                        shooter.score += 1;
-                    p.hp = p.hpMax;
-                    p.x = Math.random() * 500;
-                    p.y = Math.random() * 500;
-
-                }
-                self.toRemove = true;
-            }
-        }
-    }
-
-    self.getInitPack = function() {
-        return {
-            id:self.id,
-            x:self.x,
-            y:self.y,
-            map:self.map,
-        };
-    }
-
-    self.getUpdatePack = function() {
-        return {
-            id:self.id,
-            x:self.x,
-            y:self.y,
-            map:self.map,
-        };
-    }
-
-    Bullet.list[self.id] = self;
-    initPack.bullet.push(self.getInitPack());
-    return self;
-}
-
-Bullet.list= {};
-
-Bullet.update = function(){
-    var pack = [];
-    for(var i in Bullet.list){
-        var bullet = Bullet.list[i];
-        bullet.update();
-        if(bullet.toRemove){
-            delete Bullet.list[i];
-            removePack.bullet.push(bullet.id);
-        }
-        else
-            pack.push(bullet.getUpdatePack());
-    }
-    return pack;
-}
-
-Bullet.getAllInitPack = function(){
-    var bullets = [];
-    for(var i in Bullet.list)
-        bullets.push(Bullet.list[i].getInitPack());
-    return bullets;
-}
 
 var isValidPassword = function(data, cb){
     db.account.find({username:data.username, password:data.password},function(err,res){
@@ -262,6 +46,21 @@ var addUser = function(data, cb){
     });
 }
 
+var updateGMLevel = function(username, lvl, cb){
+    db.account.update({username:username},{$set:{gmlvl:lvl}},function(err){
+        cb();
+    });
+}
+
+var hasPermission = function(username, req, cb){
+    db.account.find({username:username},function(err,res){
+        if (res[0].gmlvl >= req)
+            cb(true);
+        else
+            cb(false);
+    });
+}
+
 var io = require('socket.io')(serv, {});
 io.sockets.on('connection', function(socket){
     socket.id = Math.random();
@@ -270,7 +69,7 @@ io.sockets.on('connection', function(socket){
     socket.on('signIn', function(data){
         isValidPassword(data, function(res){
             if (res){
-                Player.onConnect(socket);
+                Player.Player.onConnect(socket, data.username);
                 socket.playerName = data.username;
                 socket.emit('signInResponse', {success:true});
             } else {
@@ -292,40 +91,226 @@ io.sockets.on('connection', function(socket){
 
     socket.on('disconnect', function(){
         delete SOCKET_LIST[socket.id];
-        Player.onDisconnect(socket);
+        Player.Player.onDisconnect(socket);
     });
     socket.on('sendMsgToServer', function(data){
-        var playerName = ("" + socket.id).slice(2,7);
-        for (var i in SOCKET_LIST){
-            SOCKET_LIST[i].emit('addToChat', socket.playerName + ': ' + data);
+        if (data)
+            for (var i in SOCKET_LIST){
+                SOCKET_LIST[i].emit('addToChat', {ctimestamp: getTimeStamp(0), content: socket.playerName + ': ' + data, tab: "world"});
+            }
+    });
+
+    socket.on('command', function(data){
+        servermsg = "Server: ";
+        modifyer = data[0];
+        command = data.slice(1).split(' ');
+
+        // TODO: has permission
+        //staff cmd
+        if(modifyer === '@'){
+            hasPermission(socket.playerName, 1, function(res){
+                if (res)
+                    switch (command[0]) {
+                        // @bc (args: <message>)
+                        case "bc":
+                            res = joinArgs(command, 1, 0);
+                            for (var i in SOCKET_LIST){
+                                SOCKET_LIST[i].emit('addToChat', {ctimestamp: getTimeStamp(0), content: "<font color='red' weight='bold'>GlobalAnnounce: " + res + "</font>", tab: "world"});
+                            }
+                            break;
+
+                        // @who (args: none)
+                        case "who":
+                            for (var i in Player.Player.list){
+                                servermsg+=Player.Player.list[i].playerName + ", ";
+                            }
+                            socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg, tab:"any"});
+                            break;
+
+                        // @where (args:[playername])
+                        case "where":
+                            found = false;
+                            if(command.length <= 1)
+                                command[1] = socket.playerName;
+                            for (var i in Player.Player.list){
+                                if (Player.Player.list[i].playerName.includes(command[1])){
+                                    socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + Player.Player.list[i].playerName + ": " + Player.Player.list[i].map + " [" +  Player.Player.list[i].x + ", " + Player.Player.list[i].y + "]",tab: "any"});
+                                    found = true;
+                                }
+                            }
+                            if (!found)
+                                socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + "Player not found", tab: "any"});                
+                            break;
+
+                        // @goto (args:<playername>)
+                        case "goto":
+                            found = false;
+                            if(command.length <= 1)
+                                command[1] = socket.playerName;
+                            for (var i in Player.Player.list){
+                                if (Player.Player.list[i].playerName.includes(command[1])){
+                                    Player.Player.list[socket.id].map = Player.Player.list[i].map;
+                                    Player.Player.list[socket.id].x = Player.Player.list[i].x;
+                                    Player.Player.list[socket.id].y = Player.Player.list[i].y;
+                                    socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + "Warped to " + Player.Player.list[i].playerName, tab: "any"});
+                                    found = true;
+                                    break;
+                                }
+                            }
+                            if (!found)
+                                socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + "Player not found", tab:"any"});                
+                            break;
+
+                        // @recall (args:<playername>)
+                        case "recall":
+                            found = false;
+                            if(command.length <= 1)
+                                command[1] = socket.playerName;
+                            for (var i in Player.Player.list){
+                                if (Player.Player.list[i].playerName.includes(command[1])){
+                                    Player.Player.list[i].map = Player.Player.list[socket.id].map;
+                                    Player.Player.list[i].x = Player.Player.list[socket.id].x;
+                                    Player.Player.list[i].y = Player.Player.list[socket.id].y;
+                                    socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + "Recalled " + Player.Player.list[i].playerName + " to you.", tab: "any"});
+                                    SOCKET_LIST[Player.Player.list[i].id].emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + "You were Recalled from " + socket.playerName, tab: "any"});
+                                    found = true;
+                                    break;
+                                }
+                            }
+                            if (!found)
+                                socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + "Player not found", tab: "any"});                
+                            break;
+                        
+                        // @setgm (args:<playername> <lvl>)
+                        case "setgm":
+                            hasPermission(socket.playerName, 99, function(res){
+                                if (res)
+                                    updateGMLevel(command[1],parseInt(command[2]), function(){
+                                        socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + "GM level set.", tab:"any"});
+                                    });
+                                else
+                                    socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + "you dont have permission to use this command!", tab: "any"});
+                            });
+                            break;    
+                        default:
+                            socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + "Command not found.", tab: "any"});
+                            break;
+                    }
+                    else{
+                        socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + "you dont have permission to use this command!", tab: "any"});
+                    }
+                });
+        }
+
+        // player cmd
+        else if(modifyer === '/'){
+            switch (command[0]) {
+                // /who (args: none)
+                case "who":
+                    socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + Object.keys(Player.Player.list).length + " Players Online.", tab: "any"});
+                    break;
+                 
+                // /where (args: none)
+                case "where":
+                    socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + Player.Player.list[socket.id].playerName + ": " + 
+                        Player.Player.list[socket.id].map + " [" +  Player.Player.list[socket.id].x + ", " + Player.Player.list[socket.id].y + "]", tab: "any"});
+       
+                    break;
+
+                // /whisper (args: <playername> <message>)
+                case "w":
+                case "whisper":
+                    found = false;
+                    
+                    for (var i in Player.Player.list){
+                        if (Player.Player.list[i].playerName == command[1]){
+                            res = joinArgs(command, 2, 0);
+                            socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: socket.playerName + " : " + res, tab: Player.Player.list[i].playerName});
+                            SOCKET_LIST[Player.Player.list[i].id].emit('addToChat', {ctimestamp: getTimeStamp(0), content: socket.playerName + ": " + res, tab: socket.playerName});
+                            found = true;
+                            break;
+                        }
+                    }
+                    if (!found)
+                        socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + "Player not found", tab: "any"});
+                    break;
+    
+                default:
+                    socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + "Command not found.", tab: "any"});
+                    break;
+            }
+        }
+        
+        // guild commands
+        else if(modifyer === '#'){
+
+        }
+        // party commands
+        else if(modifyer === '.'){
+
+        }
+        // help commands
+        else if(modifyer === '?'){
+            // ?
+        }
+        else{
+            // this should never happen...
         }
     });
-   
+
     socket.on('evalServer', function(data){
-        if(DEBUG){
-            socket.emit('evalAnswer', eval(data));
-        }
+        servermsg = "Server: ";
+        hasPermission(socket.playerName, 80, function(res){
+            if (res)
+                socket.emit('evalAnswer', eval(data));
+            else
+                socket.emit('addToChat', {ctimestamp: getTimeStamp(0), content: servermsg + "you dont have permission to use this command!", tab: "any"});
+        });
     });
 });
 
-var initPack = {player:[], bullet:[]};
-var removePack = {player:[], bullet:[]};
-
+// erm... the game loop
 setInterval(function(){
     var pack = {
-        player:Player.update(),
-        bullet:Bullet.update()
+        player: Player.Player.update(),
+        bullet: Bullet.Bullet.update()
     }
     
     for(var i in SOCKET_LIST){
         var socket = SOCKET_LIST[i];
-        socket.emit('init', initPack);
+        socket.emit('init', Entity.initPack);
         socket.emit('update', pack);
-        socket.emit('remove', removePack);
+        socket.emit('remove', Entity.removePack);
     }
-    initPack.player = [];
-    initPack.bullet = [];
-    removePack.player = [];
-    removePack.bullet = [];
+    Entity.initPack.player = [];
+    Entity.initPack.bullet = [];
+    Entity.removePack.player = [];
+    Entity.removePack.bullet = [];
+
+}, 1000/25);
+
+//removes (number)remArgsBefore and (number)remArgsAfter from argument array/list
+joinArgs = function(argsList, remArgsBefore, remArgsAfter){
+    var res = "";
+    for(var i = 0; i<argsList.length; i++){
+        if(i < remArgsBefore)
+            continue;
+        if(argsList.length - i <= remArgsAfter)
+            continue;
+        res +=argsList[i] + " ";
+    }
+    return res;
+}
 
-}, 1000/25);
\ No newline at end of file
+// gets the current (weird formated) timestamp (FIXME later...)
+getTimeStamp = function(){
+    var date_ob = new Date();
+    day = date_ob.getDate();
+    month = date_ob.getMonth();
+    year = date_ob.getFullYear();
+    hours = date_ob.getHours();
+    minutes = date_ob.getMinutes();
+    seconds = date_ob.getSeconds();
+
+    return (year + "-" + month + "-" + day + " " + hours + ":" + minutes + ":" + seconds);
+}
\ No newline at end of file
diff --git a/client/assets/maps/002-1.tmx b/client/assets/maps/002-1.tmx
new file mode 100644
index 0000000..3c5e75b
--- /dev/null
+++ b/client/assets/maps/002-1.tmx
@@ -0,0 +1,130 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<map version="1.4" tiledversion="1.4.3" orientation="orthogonal" renderorder="right-down" width="20" height="20" tilewidth="32" tileheight="32" infinite="0" nextlayerid="6" nextobjectid="1">
+ <tileset firstgid="1" name="2006__desert1" tilewidth="32" tileheight="32" tilecount="256" columns="16">
+  <image source="../tilesets/2006__desert1.png" width="512" height="512"/>
+ </tileset>
+ <tileset firstgid="257" name="collision" tilewidth="32" tileheight="32" tilecount="2" columns="2">
+  <image source="../tilesets/collision.png" width="64" height="32"/>
+ </tileset>
+ <tileset firstgid="259" source="../tilesets/2006__desert2.tsx"/>
+ <layer id="1" name="ground" width="20" height="20">
+  <data encoding="csv">
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
+</data>
+ </layer>
+ <layer id="2" name="ground 2" width="20" height="20">
+  <data encoding="csv">
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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+0,0,0,0,0,0,0,380,371,372,0,358,359,360,0,378,379,380,0,0,
+0,0,62,0,0,0,0,0,342,343,343,407,359,360,0,0,0,0,0,0,
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+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
+</data>
+ </layer>
+ <layer id="3" name="fringe" width="20" height="20">
+  <data encoding="csv">
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
+</data>
+ </layer>
+ <layer id="4" name="over" width="20" height="20">
+  <data encoding="csv">
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,31,32,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,22,23,24,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,259,260,261,262,263,264,265,266,267,0,0,0,
+0,0,0,0,0,0,0,0,275,276,277,278,279,280,281,282,283,0,0,0,
+0,0,0,0,0,0,0,300,291,292,293,294,295,296,297,298,299,300,0,0,
+0,0,0,0,0,0,0,316,307,308,309,310,311,312,313,314,315,316,0,0,
+0,0,0,0,0,0,0,332,323,324,325,326,327,328,329,330,331,332,0,0,
+0,0,0,0,0,0,0,348,339,340,341,0,0,0,345,346,347,348,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
+</data>
+ </layer>
+ <layer id="5" name="collision" width="20" height="20">
+  <data encoding="csv">
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,258,0,0,0,0,0,258,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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+0,0,0,0,258,258,258,0,0,0,0,0,0,0,0,0,0,0,0,0,
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+0,0,0,0,258,0,0,258,258,258,0,0,0,0,0,258,258,258,0,0,
+0,0,0,0,0,0,0,258,258,258,0,0,0,0,0,258,258,258,0,0,
+0,0,258,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
+</data>
+ </layer>
+</map>
diff --git a/client/assets/npcs.xml b/client/assets/npcs.xml
new file mode 100644
index 0000000..3238114
--- /dev/null
+++ b/client/assets/npcs.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<npcs>
+    <images>
+        <img imgid='1' src='/client/assets/npcs/generic.png'
+            width='128' 
+            height='128'
+            tileWidth='32' 
+            tileHeight='32' />
+        <img imgid='2' src='/client/assets/npcs/humans.png'
+            width='128' 
+            height='128'
+            tileWidth='32' 
+            tileHeight='64' />
+    </images>
+
+    <npc id='0' >#hidden</npc>
+    <npc id='1' imgid='1' index='0'>Chest</npc>
+    <npc id='2' imgid='2' index='0'>Girl 1</npc>
+    <npc id='3' imgid='2' index='1'>Boy 1</npc>
+</npcs>
\ No newline at end of file
diff --git a/client/assets/tilesets/2006__desert1.png b/client/assets/tilesets/2006__desert1.png
new file mode 100644
index 0000000..5813119
Binary files /dev/null and b/client/assets/tilesets/2006__desert1.png differ
diff --git a/client/assets/tilesets/2006__desert1.tsx b/client/assets/tilesets/2006__desert1.tsx
new file mode 100644
index 0000000..b062249
--- /dev/null
+++ b/client/assets/tilesets/2006__desert1.tsx
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<tileset version="1.4" tiledversion="1.4.3" name="2006__desert1" tilewidth="32" tileheight="32" tilecount="256" columns="16">
+ <image source="2006__desert1.png" width="512" height="512"/>
+</tileset>
diff --git a/client/assets/tilesets/2006__desert2.png b/client/assets/tilesets/2006__desert2.png
new file mode 100644
index 0000000..98a8740
Binary files /dev/null and b/client/assets/tilesets/2006__desert2.png differ
diff --git a/client/assets/tilesets/2006__desert2.tsx b/client/assets/tilesets/2006__desert2.tsx
new file mode 100644
index 0000000..7db0966
--- /dev/null
+++ b/client/assets/tilesets/2006__desert2.tsx
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<tileset version="1.4" tiledversion="1.4.3" name="2006__desert2" tilewidth="32" tileheight="32" tilecount="256" columns="16">
+ <image source="2006__desert2.png" width="512" height="512"/>
+</tileset>
diff --git a/client/assets/tilesets/2006__desert_x2.png b/client/assets/tilesets/2006__desert_x2.png
new file mode 100644
index 0000000..8b14d63
Binary files /dev/null and b/client/assets/tilesets/2006__desert_x2.png differ
diff --git a/client/assets/tilesets/2006__desert_x3.png b/client/assets/tilesets/2006__desert_x3.png
new file mode 100644
index 0000000..5453761
Binary files /dev/null and b/client/assets/tilesets/2006__desert_x3.png differ
diff --git a/client/assets/tilesets/collision.png b/client/assets/tilesets/collision.png
new file mode 100644
index 0000000..9486abf
Binary files /dev/null and b/client/assets/tilesets/collision.png differ
diff --git a/client/consts.js b/client/consts.js
index 0e0e28c..242857d 100644
--- a/client/consts.js
+++ b/client/consts.js
@@ -1,8 +1,16 @@
-const WIDTH = 500;
-const HEIGHT = 500;
+// game settings
+const WIDTH     = 500;
+const HEIGHT    = 500;
 
 
+// directions
+const DIR_DOWN  = 0;
+const DIR_LEFT  = 1;
+const DIR_UP    = 2;
+const DIR_RIGHT = 4;
 
 
 
+
+// error codes
 const CONNECTION_LOST = 10001;
\ No newline at end of file
diff --git a/client/index.html b/client/index.html
index c77e929..0d576d8 100644
--- a/client/index.html
+++ b/client/index.html
@@ -1,8 +1,23 @@
 <!DOCTYPE html>
-<html lang="en_US">
+<html lang="en_US" style='background-color:#858590;'>
   <meta charset="UTF-8">
   <title>ThePixelWorld</title>
   <!-- Login -->
+  <style type="text/css">
+    .chat-tab{
+      margin-left: 2px; 
+      margin-right: 2px;
+      padding-left: 3px; 
+      padding-right: 3px;
+      float: left; 
+      color: #858590; 
+      background-color: #555555;
+      border-radius: 4px;
+    }
+    #active{
+      color: lime;
+    }
+  </style>
   <div id="signDiv" style='text-align:center;'>
     Username: <input id="signDiv-username" type="text"></input><br>
     Password: <input id="signDiv-password" type="password"></input><br>
@@ -19,8 +34,9 @@
       To disable the limit, set it to <b>0</b>.
       <hr>
       <h3>News:</h3>
-      I have some trouble while parsing tmx maps.<br>
-      currently we are using just a sprite file as "map" :D<br>
+      tmx maps loading and rendering nearly done, beside collision system.<br>
+      basic chat system (guild/party/... wip) {may also implement an api for irc usage?}<br>
+      every player has a name drawn above there head now.<br>
       <h3>ToDo</h3>
       to much, and to lazy to write it down *blush*
     </div>
@@ -28,25 +44,34 @@
 
   <!-- Game -->
   <div id="gameDiv" style="display:none;">
-    <canvas id="ctx" width="500" height="500" style="border:1px solid #000000;"></canvas>
-    <div id="chat-text" style="width:500px; height:100px; overflow-y:scroll;"> <!--https://www.sitepoint.com/community/t/auto-scrolling-a-div-with-overflow-scroll-auto/2291--></div>
-    <form id="chat-form">
-      <input id="chat-input" type="text" style="width:500px;"></input>
-    </form>
+    <canvas id="ctx" width="500" height="500" tabindex="1" style="border:1px solid #000000;"></canvas>
+    <div id="chat-wrapper" style="width:500px; height:20px; overflow: hidden; white-space: nowrap;">
+        <div class="chat-tab" id='active' onclick="setActiveChatTab('world', this)" >WORLD</div>
+        <!-- TODO only show up on permission to use the GM tab. 
+        <div class="chat-tab" onclick="setActiveChatTab('gm', this)"> GM</div> -->
+        <div class="chat-tab" onclick="setActiveChatTab('guild', this)">[#] Guild (WIP)</div>
+        <div class="chat-tab" onclick="setActiveChatTab('party', this)">[.] Party (WIP)</div>
+      </div>
+      <div id="chat-text" style="width:500px; height:100px; overflow-y:scroll;"></div>
+      <form id="chat-form">
+        <input id="chat-input" type="text" style="width:500px;"></input>
+      </form>
+    </div>
   </div> 
 
    <!-- loading socket.io library -->
   <script src="https://cdn.socket.io/4.1.3/socket.io.js"></script>
+  <script src="client/lib/socket.io.js"></script>
   <script src="client/consts.js"></script>
   <script src="client/tmxloader.js"></script>
 
   <script>
     var socket = io();
     var errno = 0;
-
+    
     socket.on('disconnect', function(){
       errno = CONNECTION_LOST;
-      alert("Connection lost..." + err);
+      alert("Connection lost..." + errno);
     });
 
     // Login
@@ -80,12 +105,30 @@
     });
 
     // Chat
+    var activeChatTab = "world"; // default tab on join.
+    var chatContents = [];
+    chatContents[activeChatTab] = "";
+
     var chatText = document.getElementById("chat-text");
     var chatInput = document.getElementById("chat-input");
     var chatForm = document.getElementById("chat-form");
 
     socket.on('addToChat', function(data){
-      chatText.innerHTML += "<div>" + data + "</div>";
+      if(data.tab === "any")
+        data.tab = activeChatTab;
+      if (chatContents[data.tab] === undefined)
+        document.getElementById("chat-wrapper").innerHTML += "<div class=\"chat-tab\" onclick=\"setActiveChatTab('" + data.tab + "', this)\">" + data.tab + "</div>";
+
+      if(!chatContents[data.tab])
+        chatContents[data.tab] = "<div title=\"" + data.ctimestamp + "\">" + data.content + "</div>"
+      else
+        chatContents[data.tab] += "<div title=\"" + data.ctimestamp + "\">" + data.content + "</div>"
+      
+      if (activeChatTab === data.tab){
+        chatText.innerHTML = chatContents[activeChatTab];
+        //scroll down
+        chatText.scrollTop = chatText.scrollHeight;
+        }
     });
     socket.on('evalAnswer', function(data){
       console.log(data);
@@ -93,33 +136,32 @@
     
     chatForm.onsubmit = function(e){
         e.preventDefault();
-        if (chatInput.value[0] === "/")
+        if (chatInput.value[0] === "*")
           socket.emit("evalServer", chatInput.value.slice(1));
+        else if (chatInput.value[0] === "@" || chatInput.value[0] === "/"
+          || chatInput.value[0] === "." || chatInput.value[0] === "#")
+          socket.emit("command", chatInput.value);
+        else if(activeChatTab !== "world")
+          socket.emit("command", "/w " + activeChatTab + " " + chatInput.value);
         else
           socket.emit("sendMsgToServer", chatInput.value);
         chatInput.value = "";
     }
 
-    var TMXMap = function(mapId){
-      var self = new TMXLoader(mapId);
-      return self;
-    };
-
     // Game
     var Img = {};
     Img.player = new Image();
     Img.player.src = '/client/assets/sprites/races/human-female.png';
     Img.bullet = new Image();
     Img.bullet.src = '/client/assets/sprites/blaze.png';
-    Img.map = new Image();
-    Img.map.src = '/client/assets/sprites/races/human-female.png';
 
     var ctx = document.getElementById("ctx").getContext("2d");
-    ctx.font = '30px Arial';
+    ctx.font = '16px Arial';
 
     var Player = function(initPack){
       var self = {};
       self.id = initPack.id;
+      self.playerName = initPack.playerName;
       self.number = initPack.number;
       self.x = initPack.x;
       self.y = initPack.y;
@@ -127,31 +169,40 @@
       self.hp = initPack.hp;
       self.hpMax = initPack.hpMax;
       self.score = initPack.score;
+      self.dir = DIR_DOWN;
 
-      self.draw = function(){
+      self.drawPlayer = function(){
         var x = self.x - Player.list[selfId].x + WIDTH/2;
         var y = self.y - Player.list[selfId].y + HEIGHT/2;
 
-        var hpWidth = 30 * self.hp / self.hpMax;
-        // hp-bar
-        ctx.fillStyle="rgba(255,0,0,0.8)";
-        ctx.fillRect(x - hpWidth/2, y - 40, hpWidth, 4);
         // 'player'
         var width = 64;
         var height = 64;
-
         ctx.drawImage(Img.player,
           0,0,
           width, height,
           x-width/2, y-height/2, 
           width, height);
       }
-
+      self.drawPlayerName = function(){
+        var x = self.x - Player.list[selfId].x + WIDTH/2;
+        var y = self.y - Player.list[selfId].y + HEIGHT/2;
+        var hpWidth = 30 * self.hp / self.hpMax;
+        // hp-bar
+        ctx.fillStyle="rgba(255,0,0,0.8)";
+        ctx.fillRect(x - hpWidth/2, y - 40, hpWidth, 4);
+        ctx.fillStyle="rgba(75,75,75,0.8)";
+        var metrics = ctx.measureText(Player.list[self.id].playerName);
+        ctx.fillText(Player.list[self.id].playerName,
+          x - metrics.width/2, y - 45, metrics.width, 4);
+      }
+      
       Player.list[self.id] = self;
       return self;
     };
 
     Player.list = {};
+    tmxmap=null;
     
     var Bullet = function(initPack){
       var self = {};
@@ -193,7 +244,7 @@
       }
       if(data.selfId){
         selfId = data.selfId;
-        new TMXMap(Player.list[selfId].map);
+        tmxmap = new TMXLoader(Player.list[selfId].map);
       }
     });
     // update (diff)
@@ -210,6 +261,10 @@
             p.hp = pack.hp;
           if(pack.score !== undefined)
             p.score = pack.score;
+          if(pack.dir !== undefined)
+            p.dir = pack.dir;
+          if(pack.dir !== undefined)
+            p.playerName = pack.playerName;
         }
       }
       for(var i = 0; i < data.bullet.length; i++){
@@ -233,27 +288,65 @@
         delete Bullet.list[data.bullet[i]];
       }
     });
-
+    
+    setActiveChatTab = function(tabName, tab){
+      if (!chatContents[tabName])
+        chatContents[tabName] = "";
+      activeChatTab = tabName;
+      chatText.innerHTML = chatContents[activeChatTab];
+      Array.from(document.getElementsByClassName("chat-tab")).forEach(function(element, index, array) {
+       element.setAttribute("id", "");
+      })
+      tab.setAttribute("id", "active");
+      chatText.scrollTop = chatText.scrollHeight;
+    }
+    
     setInterval(function(){
-      if(!selfId)
+      if(!selfId || errno != 0)
         return;
       ctx.clearRect(0,0,500,500);
-
-      drawMap();
+      drawMapGround();
+      drawGFXGround();
+      drawEntities();
+      drawMapOver();
+      for(var i in Player.list){
+        Player.list[i].drawPlayerName();
+      }
+      drawGFXOver();
       //drawScore();
+    }, 1000/25);
+
+    var drawMapGround = function(){
+      var x = WIDTH/2 - Player.list[selfId].x;
+      var y = HEIGHT/2 - Player.list[selfId].y;
+
+      tmxmap.drawLayer("ground",x,y);
+    }
+    
+    var drawGFXGround = function(){
+
+    }
+
+    var drawEntities = function(){
       for(var i in Player.list){
-        Player.list[i].draw();
+        Player.list[i].drawPlayer();
       }
       for(var i in Bullet.list){
         Bullet.list[i].draw();
       }
-    }, 1000/25);
+    }
 
-    var drawMap = function(){
+    var drawMapOver = function(){
       var x = WIDTH/2 - Player.list[selfId].x;
-      var y= HEIGHT/2 - Player.list[selfId].y;
-      ctx.drawImage(Img.map,x,y);
+      var y = HEIGHT/2 - Player.list[selfId].y;
+      tmxmap.drawLayer("fringe",x,y); // needs to get rendered on last pos.
+      tmxmap.drawLayer("over",x,y);
+    }
+
+    var drawGFXOver = function(){
+
     }
+    // TODO Collision
 
     var drawScore = function(){
       ctx.fillStyle = 'green';
@@ -262,14 +355,16 @@
 
     document.onkeydown = function(event){
       //console.log(event.keyCode);
-      if(event.keyCode === 68 || event.keyCode === 39) // d
-        socket.emit('keyPress',{inputId: 'right', state: true});
-      else if(event.keyCode === 65 || event.keyCode === 37) // a
-        socket.emit('keyPress',{inputId: 'left', state: true});
-      else if(event.keyCode === 83 || event.keyCode === 40) // s
-        socket.emit('keyPress',{inputId: 'down', state: true});
-      else if(event.keyCode === 87 || event.keyCode === 38) // w
-        socket.emit('keyPress',{inputId: 'up', state: true});
+      if (document.activeElement === document.getElementById('ctx')){
+        if(event.keyCode === 68 || event.keyCode === 39) // d
+          socket.emit('keyPress',{inputId: 'right', state: true});
+        else if(event.keyCode === 65 || event.keyCode === 37) // a
+          socket.emit('keyPress',{inputId: 'left', state: true});
+        else if(event.keyCode === 83 || event.keyCode === 40) // s
+          socket.emit('keyPress',{inputId: 'down', state: true});
+        else if(event.keyCode === 87 || event.keyCode === 38) // w
+          socket.emit('keyPress',{inputId: 'up', state: true});
+      }
     }
 
     document.onkeyup = function(event){
@@ -284,7 +379,9 @@
     }
 
     document.onmousedown = function(event){
+      if (document.activeElement === document.getElementById('ctx')){
         socket.emit('keyPress',{inputId: 'attack', state: true});
+      }
     }
     
     document.onmouseup = function(event){
diff --git a/client/lib/socket.io.js b/client/lib/socket.io.js
new file mode 100644
index 0000000..9c6a8a3
--- /dev/null
+++ b/client/lib/socket.io.js
@@ -0,0 +1,6081 @@
+/*!
+ * Socket.IO v4.1.3
+ * (c) 2014-2021 Guillermo Rauch
+ * Released under the MIT License.
+ */
+(function webpackUniversalModuleDefinition(root, factory) {
+	if(typeof exports === 'object' && typeof module === 'object')
+		module.exports = factory();
+	else if(typeof define === 'function' && define.amd)
+		define([], factory);
+	else if(typeof exports === 'object')
+		exports["io"] = factory();
+	else
+		root["io"] = factory();
+})(self, function() {
+return /******/ (function(modules) { // webpackBootstrap
+/******/ 	// The module cache
+/******/ 	var installedModules = {};
+/******/
+/******/ 	// The require function
+/******/ 	function __webpack_require__(moduleId) {
+/******/
+/******/ 		// Check if module is in cache
+/******/ 		if(installedModules[moduleId]) {
+/******/ 			return installedModules[moduleId].exports;
+/******/ 		}
+/******/ 		// Create a new module (and put it into the cache)
+/******/ 		var module = installedModules[moduleId] = {
+/******/ 			i: moduleId,
+/******/ 			l: false,
+/******/ 			exports: {}
+/******/ 		};
+/******/
+/******/ 		// Execute the module function
+/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
+/******/
+/******/ 		// Flag the module as loaded
+/******/ 		module.l = true;
+/******/
+/******/ 		// Return the exports of the module
+/******/ 		return module.exports;
+/******/ 	}
+/******/
+/******/
+/******/ 	// expose the modules object (__webpack_modules__)
+/******/ 	__webpack_require__.m = modules;
+/******/
+/******/ 	// expose the module cache
+/******/ 	__webpack_require__.c = installedModules;
+/******/
+/******/ 	// define getter function for harmony exports
+/******/ 	__webpack_require__.d = function(exports, name, getter) {
+/******/ 		if(!__webpack_require__.o(exports, name)) {
+/******/ 			Object.defineProperty(exports, name, { enumerable: true, get: getter });
+/******/ 		}
+/******/ 	};
+/******/
+/******/ 	// define __esModule on exports
+/******/ 	__webpack_require__.r = function(exports) {
+/******/ 		if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
+/******/ 			Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
+/******/ 		}
+/******/ 		Object.defineProperty(exports, '__esModule', { value: true });
+/******/ 	};
+/******/
+/******/ 	// create a fake namespace object
+/******/ 	// mode & 1: value is a module id, require it
+/******/ 	// mode & 2: merge all properties of value into the ns
+/******/ 	// mode & 4: return value when already ns object
+/******/ 	// mode & 8|1: behave like require
+/******/ 	__webpack_require__.t = function(value, mode) {
+/******/ 		if(mode & 1) value = __webpack_require__(value);
+/******/ 		if(mode & 8) return value;
+/******/ 		if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
+/******/ 		var ns = Object.create(null);
+/******/ 		__webpack_require__.r(ns);
+/******/ 		Object.defineProperty(ns, 'default', { enumerable: true, value: value });
+/******/ 		if(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));
+/******/ 		return ns;
+/******/ 	};
+/******/
+/******/ 	// getDefaultExport function for compatibility with non-harmony modules
+/******/ 	__webpack_require__.n = function(module) {
+/******/ 		var getter = module && module.__esModule ?
+/******/ 			function getDefault() { return module['default']; } :
+/******/ 			function getModuleExports() { return module; };
+/******/ 		__webpack_require__.d(getter, 'a', getter);
+/******/ 		return getter;
+/******/ 	};
+/******/
+/******/ 	// Object.prototype.hasOwnProperty.call
+/******/ 	__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
+/******/
+/******/ 	// __webpack_public_path__
+/******/ 	__webpack_require__.p = "";
+/******/
+/******/
+/******/ 	// Load entry module and return exports
+/******/ 	return __webpack_require__(__webpack_require__.s = "./build/index.js");
+/******/ })
+/************************************************************************/
+/******/ ({
+
+/***/ "./build/index.js":
+/*!************************!*\
+  !*** ./build/index.js ***!
+  \************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.io = exports.Socket = exports.Manager = exports.protocol = void 0;
+
+var url_1 = __webpack_require__(/*! ./url */ "./build/url.js");
+
+var manager_1 = __webpack_require__(/*! ./manager */ "./build/manager.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("socket.io-client");
+/**
+ * Module exports.
+ */
+
+
+module.exports = exports = lookup;
+/**
+ * Managers cache.
+ */
+
+var cache = exports.managers = {};
+
+function lookup(uri, opts) {
+  if (_typeof(uri) === "object") {
+    opts = uri;
+    uri = undefined;
+  }
+
+  opts = opts || {};
+  var parsed = url_1.url(uri, opts.path || "/socket.io");
+  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 = new manager_1.Manager(source, opts);
+  } else {
+    if (!cache[id]) {
+      debug("new io instance for %s", source);
+      cache[id] = new manager_1.Manager(source, opts);
+    }
+
+    io = cache[id];
+  }
+
+  if (parsed.query && !opts.query) {
+    opts.query = parsed.queryKey;
+  }
+
+  return io.socket(parsed.path, opts);
+}
+
+exports.io = lookup;
+/**
+ * Protocol version.
+ *
+ * @public
+ */
+
+var socket_io_parser_1 = __webpack_require__(/*! socket.io-parser */ "./node_modules/socket.io-parser/dist/index.js");
+
+Object.defineProperty(exports, "protocol", {
+  enumerable: true,
+  get: function get() {
+    return socket_io_parser_1.protocol;
+  }
+});
+/**
+ * `connect`.
+ *
+ * @param {String} uri
+ * @public
+ */
+
+exports.connect = lookup;
+/**
+ * Expose constructors for standalone build.
+ *
+ * @public
+ */
+
+var manager_2 = __webpack_require__(/*! ./manager */ "./build/manager.js");
+
+Object.defineProperty(exports, "Manager", {
+  enumerable: true,
+  get: function get() {
+    return manager_2.Manager;
+  }
+});
+
+var socket_1 = __webpack_require__(/*! ./socket */ "./build/socket.js");
+
+Object.defineProperty(exports, "Socket", {
+  enumerable: true,
+  get: function get() {
+    return socket_1.Socket;
+  }
+});
+exports["default"] = lookup;
+
+/***/ }),
+
+/***/ "./build/manager.js":
+/*!**************************!*\
+  !*** ./build/manager.js ***!
+  \**************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.Manager = void 0;
+
+var eio = __webpack_require__(/*! engine.io-client */ "./node_modules/engine.io-client/lib/index.js");
+
+var socket_1 = __webpack_require__(/*! ./socket */ "./build/socket.js");
+
+var parser = __webpack_require__(/*! socket.io-parser */ "./node_modules/socket.io-parser/dist/index.js");
+
+var on_1 = __webpack_require__(/*! ./on */ "./build/on.js");
+
+var Backoff = __webpack_require__(/*! backo2 */ "./node_modules/backo2/index.js");
+
+var typed_events_1 = __webpack_require__(/*! ./typed-events */ "./build/typed-events.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("socket.io-client:manager");
+
+var Manager = /*#__PURE__*/function (_typed_events_1$Stric) {
+  _inherits(Manager, _typed_events_1$Stric);
+
+  var _super = _createSuper(Manager);
+
+  function Manager(uri, opts) {
+    var _this;
+
+    _classCallCheck(this, Manager);
+
+    _this = _super.call(this);
+    _this.nsps = {};
+    _this.subs = [];
+
+    if (uri && "object" === _typeof(uri)) {
+      opts = uri;
+      uri = undefined;
+    }
+
+    opts = opts || {};
+    opts.path = opts.path || "/socket.io";
+    _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;
+
+    var _parser = opts.parser || parser;
+
+    _this.encoder = new _parser.Encoder();
+    _this.decoder = new _parser.Decoder();
+    _this._autoConnect = opts.autoConnect !== false;
+    if (_this._autoConnect) _this.open();
+    return _this;
+  }
+
+  _createClass(Manager, [{
+    key: "reconnection",
+    value: function reconnection(v) {
+      if (!arguments.length) return this._reconnection;
+      this._reconnection = !!v;
+      return this;
+    }
+  }, {
+    key: "reconnectionAttempts",
+    value: function reconnectionAttempts(v) {
+      if (v === undefined) return this._reconnectionAttempts;
+      this._reconnectionAttempts = v;
+      return this;
+    }
+  }, {
+    key: "reconnectionDelay",
+    value: function reconnectionDelay(v) {
+      var _a;
+
+      if (v === undefined) return this._reconnectionDelay;
+      this._reconnectionDelay = v;
+      (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMin(v);
+      return this;
+    }
+  }, {
+    key: "randomizationFactor",
+    value: function randomizationFactor(v) {
+      var _a;
+
+      if (v === undefined) return this._randomizationFactor;
+      this._randomizationFactor = v;
+      (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);
+      return this;
+    }
+  }, {
+    key: "reconnectionDelayMax",
+    value: function reconnectionDelayMax(v) {
+      var _a;
+
+      if (v === undefined) return this._reconnectionDelayMax;
+      this._reconnectionDelayMax = v;
+      (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);
+      return this;
+    }
+  }, {
+    key: "timeout",
+    value: function timeout(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
+     *
+     * @private
+     */
+
+  }, {
+    key: "maybeReconnectOnOpen",
+    value: function maybeReconnectOnOpen() {
+      // 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} fn - optional, callback
+     * @return self
+     * @public
+     */
+
+  }, {
+    key: "open",
+    value: function open(fn) {
+      var _this2 = this;
+
+      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 openSubDestroy = on_1.on(socket, "open", function () {
+        self.onopen();
+        fn && fn();
+      }); // emit `error`
+
+      var errorSub = on_1.on(socket, "error", function (err) {
+        debug("error");
+        self.cleanup();
+        self._readyState = "closed";
+
+        _this2.emitReserved("error", err);
+
+        if (fn) {
+          fn(err);
+        } else {
+          // Only do this if there is no fn to handle the error
+          self.maybeReconnectOnOpen();
+        }
+      });
+
+      if (false !== this._timeout) {
+        var timeout = this._timeout;
+        debug("connect attempt will timeout after %d", timeout);
+
+        if (timeout === 0) {
+          openSubDestroy(); // prevents a race condition with the 'open' event
+        } // set timer
+
+
+        var timer = setTimeout(function () {
+          debug("connect attempt timed out after %d", timeout);
+          openSubDestroy();
+          socket.close();
+          socket.emit("error", new Error("timeout"));
+        }, timeout);
+
+        if (this.opts.autoUnref) {
+          timer.unref();
+        }
+
+        this.subs.push(function subDestroy() {
+          clearTimeout(timer);
+        });
+      }
+
+      this.subs.push(openSubDestroy);
+      this.subs.push(errorSub);
+      return this;
+    }
+    /**
+     * Alias for open()
+     *
+     * @return self
+     * @public
+     */
+
+  }, {
+    key: "connect",
+    value: function connect(fn) {
+      return this.open(fn);
+    }
+    /**
+     * Called upon transport open.
+     *
+     * @private
+     */
+
+  }, {
+    key: "onopen",
+    value: function onopen() {
+      debug("open"); // clear old subs
+
+      this.cleanup(); // mark as open
+
+      this._readyState = "open";
+      this.emitReserved("open"); // add new subs
+
+      var socket = this.engine;
+      this.subs.push(on_1.on(socket, "ping", this.onping.bind(this)), on_1.on(socket, "data", this.ondata.bind(this)), on_1.on(socket, "error", this.onerror.bind(this)), on_1.on(socket, "close", this.onclose.bind(this)), on_1.on(this.decoder, "decoded", this.ondecoded.bind(this)));
+    }
+    /**
+     * Called upon a ping.
+     *
+     * @private
+     */
+
+  }, {
+    key: "onping",
+    value: function onping() {
+      this.emitReserved("ping");
+    }
+    /**
+     * Called with data.
+     *
+     * @private
+     */
+
+  }, {
+    key: "ondata",
+    value: function ondata(data) {
+      this.decoder.add(data);
+    }
+    /**
+     * Called when parser fully decodes a packet.
+     *
+     * @private
+     */
+
+  }, {
+    key: "ondecoded",
+    value: function ondecoded(packet) {
+      this.emitReserved("packet", packet);
+    }
+    /**
+     * Called upon socket error.
+     *
+     * @private
+     */
+
+  }, {
+    key: "onerror",
+    value: function onerror(err) {
+      debug("error", err);
+      this.emitReserved("error", err);
+    }
+    /**
+     * Creates a new socket for the given `nsp`.
+     *
+     * @return {Socket}
+     * @public
+     */
+
+  }, {
+    key: "socket",
+    value: function socket(nsp, opts) {
+      var socket = this.nsps[nsp];
+
+      if (!socket) {
+        socket = new socket_1.Socket(this, nsp, opts);
+        this.nsps[nsp] = socket;
+      }
+
+      return socket;
+    }
+    /**
+     * Called upon a socket close.
+     *
+     * @param socket
+     * @private
+     */
+
+  }, {
+    key: "_destroy",
+    value: function _destroy(socket) {
+      var nsps = Object.keys(this.nsps);
+
+      for (var _i = 0, _nsps = nsps; _i < _nsps.length; _i++) {
+        var nsp = _nsps[_i];
+        var _socket = this.nsps[nsp];
+
+        if (_socket.active) {
+          debug("socket %s is still active, skipping close", nsp);
+          return;
+        }
+      }
+
+      this._close();
+    }
+    /**
+     * Writes a packet.
+     *
+     * @param packet
+     * @private
+     */
+
+  }, {
+    key: "_packet",
+    value: function _packet(packet) {
+      debug("writing packet %j", packet);
+      var encodedPackets = this.encoder.encode(packet);
+
+      for (var i = 0; i < encodedPackets.length; i++) {
+        this.engine.write(encodedPackets[i], packet.options);
+      }
+    }
+    /**
+     * Clean up transport subscriptions and packet buffer.
+     *
+     * @private
+     */
+
+  }, {
+    key: "cleanup",
+    value: function cleanup() {
+      debug("cleanup");
+      this.subs.forEach(function (subDestroy) {
+        return subDestroy();
+      });
+      this.subs.length = 0;
+      this.decoder.destroy();
+    }
+    /**
+     * Close the current socket.
+     *
+     * @private
+     */
+
+  }, {
+    key: "_close",
+    value: function _close() {
+      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();
+    }
+    /**
+     * Alias for close()
+     *
+     * @private
+     */
+
+  }, {
+    key: "disconnect",
+    value: function disconnect() {
+      return this._close();
+    }
+    /**
+     * Called upon engine close.
+     *
+     * @private
+     */
+
+  }, {
+    key: "onclose",
+    value: function onclose(reason) {
+      debug("onclose");
+      this.cleanup();
+      this.backoff.reset();
+      this._readyState = "closed";
+      this.emitReserved("close", reason);
+
+      if (this._reconnection && !this.skipReconnect) {
+        this.reconnect();
+      }
+    }
+    /**
+     * Attempt a reconnection.
+     *
+     * @private
+     */
+
+  }, {
+    key: "reconnect",
+    value: function reconnect() {
+      var _this3 = this;
+
+      if (this._reconnecting || this.skipReconnect) return this;
+      var self = this;
+
+      if (this.backoff.attempts >= this._reconnectionAttempts) {
+        debug("reconnect failed");
+        this.backoff.reset();
+        this.emitReserved("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");
+
+          _this3.emitReserved("reconnect_attempt", 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();
+
+              _this3.emitReserved("reconnect_error", err);
+            } else {
+              debug("reconnect success");
+              self.onreconnect();
+            }
+          });
+        }, delay);
+
+        if (this.opts.autoUnref) {
+          timer.unref();
+        }
+
+        this.subs.push(function subDestroy() {
+          clearTimeout(timer);
+        });
+      }
+    }
+    /**
+     * Called upon successful reconnect.
+     *
+     * @private
+     */
+
+  }, {
+    key: "onreconnect",
+    value: function onreconnect() {
+      var attempt = this.backoff.attempts;
+      this._reconnecting = false;
+      this.backoff.reset();
+      this.emitReserved("reconnect", attempt);
+    }
+  }]);
+
+  return Manager;
+}(typed_events_1.StrictEventEmitter);
+
+exports.Manager = Manager;
+
+/***/ }),
+
+/***/ "./build/on.js":
+/*!*********************!*\
+  !*** ./build/on.js ***!
+  \*********************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.on = void 0;
+
+function on(obj, ev, fn) {
+  obj.on(ev, fn);
+  return function subDestroy() {
+    obj.off(ev, fn);
+  };
+}
+
+exports.on = on;
+
+/***/ }),
+
+/***/ "./build/socket.js":
+/*!*************************!*\
+  !*** ./build/socket.js ***!
+  \*************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }
+
+function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
+
+function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }
+
+function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.Socket = void 0;
+
+var socket_io_parser_1 = __webpack_require__(/*! socket.io-parser */ "./node_modules/socket.io-parser/dist/index.js");
+
+var on_1 = __webpack_require__(/*! ./on */ "./build/on.js");
+
+var typed_events_1 = __webpack_require__(/*! ./typed-events */ "./build/typed-events.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("socket.io-client:socket");
+/**
+ * Internal events.
+ * These events can't be emitted by the user.
+ */
+
+
+var RESERVED_EVENTS = Object.freeze({
+  connect: 1,
+  connect_error: 1,
+  disconnect: 1,
+  disconnecting: 1,
+  // EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener
+  newListener: 1,
+  removeListener: 1
+});
+
+var Socket = /*#__PURE__*/function (_typed_events_1$Stric) {
+  _inherits(Socket, _typed_events_1$Stric);
+
+  var _super = _createSuper(Socket);
+
+  /**
+   * `Socket` constructor.
+   *
+   * @public
+   */
+  function Socket(io, nsp, opts) {
+    var _this;
+
+    _classCallCheck(this, Socket);
+
+    _this = _super.call(this);
+    _this.receiveBuffer = [];
+    _this.sendBuffer = [];
+    _this.ids = 0;
+    _this.acks = {};
+    _this.flags = {};
+    _this.io = io;
+    _this.nsp = nsp;
+    _this.ids = 0;
+    _this.acks = {};
+    _this.receiveBuffer = [];
+    _this.sendBuffer = [];
+    _this.connected = false;
+    _this.disconnected = true;
+    _this.flags = {};
+
+    if (opts && opts.auth) {
+      _this.auth = opts.auth;
+    }
+
+    if (_this.io._autoConnect) _this.open();
+    return _this;
+  }
+  /**
+   * Subscribe to open, close and packet events
+   *
+   * @private
+   */
+
+
+  _createClass(Socket, [{
+    key: "subEvents",
+    value: function subEvents() {
+      if (this.subs) return;
+      var io = this.io;
+      this.subs = [on_1.on(io, "open", this.onopen.bind(this)), on_1.on(io, "packet", this.onpacket.bind(this)), on_1.on(io, "error", this.onerror.bind(this)), on_1.on(io, "close", this.onclose.bind(this))];
+    }
+    /**
+     * Whether the Socket will try to reconnect when its Manager connects or reconnects
+     */
+
+  }, {
+    key: "active",
+    get: function get() {
+      return !!this.subs;
+    }
+    /**
+     * "Opens" the socket.
+     *
+     * @public
+     */
+
+  }, {
+    key: "connect",
+    value: function connect() {
+      if (this.connected) return this;
+      this.subEvents();
+      if (!this.io["_reconnecting"]) this.io.open(); // ensure open
+
+      if ("open" === this.io._readyState) this.onopen();
+      return this;
+    }
+    /**
+     * Alias for connect()
+     */
+
+  }, {
+    key: "open",
+    value: function open() {
+      return this.connect();
+    }
+    /**
+     * Sends a `message` event.
+     *
+     * @return self
+     * @public
+     */
+
+  }, {
+    key: "send",
+    value: function send() {
+      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+        args[_key] = arguments[_key];
+      }
+
+      args.unshift("message");
+      this.emit.apply(this, args);
+      return this;
+    }
+    /**
+     * Override `emit`.
+     * If the event is in `events`, it's emitted normally.
+     *
+     * @return self
+     * @public
+     */
+
+  }, {
+    key: "emit",
+    value: function emit(ev) {
+      if (RESERVED_EVENTS.hasOwnProperty(ev)) {
+        throw new Error('"' + ev + '" is a reserved event name');
+      }
+
+      for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+        args[_key2 - 1] = arguments[_key2];
+      }
+
+      args.unshift(ev);
+      var packet = {
+        type: socket_io_parser_1.PacketType.EVENT,
+        data: args
+      };
+      packet.options = {};
+      packet.options.compress = this.flags.compress !== false; // 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++;
+      }
+
+      var isTransportWritable = this.io.engine && this.io.engine.transport && this.io.engine.transport.writable;
+      var discardPacket = this.flags["volatile"] && (!isTransportWritable || !this.connected);
+
+      if (discardPacket) {
+        debug("discard packet as the transport is not currently writable");
+      } else if (this.connected) {
+        this.packet(packet);
+      } else {
+        this.sendBuffer.push(packet);
+      }
+
+      this.flags = {};
+      return this;
+    }
+    /**
+     * Sends a packet.
+     *
+     * @param packet
+     * @private
+     */
+
+  }, {
+    key: "packet",
+    value: function packet(_packet) {
+      _packet.nsp = this.nsp;
+
+      this.io._packet(_packet);
+    }
+    /**
+     * Called upon engine `open`.
+     *
+     * @private
+     */
+
+  }, {
+    key: "onopen",
+    value: function onopen() {
+      var _this2 = this;
+
+      debug("transport is open - connecting");
+
+      if (typeof this.auth == "function") {
+        this.auth(function (data) {
+          _this2.packet({
+            type: socket_io_parser_1.PacketType.CONNECT,
+            data: data
+          });
+        });
+      } else {
+        this.packet({
+          type: socket_io_parser_1.PacketType.CONNECT,
+          data: this.auth
+        });
+      }
+    }
+    /**
+     * Called upon engine or manager `error`.
+     *
+     * @param err
+     * @private
+     */
+
+  }, {
+    key: "onerror",
+    value: function onerror(err) {
+      if (!this.connected) {
+        this.emitReserved("connect_error", err);
+      }
+    }
+    /**
+     * Called upon engine `close`.
+     *
+     * @param reason
+     * @private
+     */
+
+  }, {
+    key: "onclose",
+    value: function onclose(reason) {
+      debug("close (%s)", reason);
+      this.connected = false;
+      this.disconnected = true;
+      delete this.id;
+      this.emitReserved("disconnect", reason);
+    }
+    /**
+     * Called with socket packet.
+     *
+     * @param packet
+     * @private
+     */
+
+  }, {
+    key: "onpacket",
+    value: function onpacket(packet) {
+      var sameNamespace = packet.nsp === this.nsp;
+      if (!sameNamespace) return;
+
+      switch (packet.type) {
+        case socket_io_parser_1.PacketType.CONNECT:
+          if (packet.data && packet.data.sid) {
+            var id = packet.data.sid;
+            this.onconnect(id);
+          } else {
+            this.emitReserved("connect_error", new Error("It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)"));
+          }
+
+          break;
+
+        case socket_io_parser_1.PacketType.EVENT:
+          this.onevent(packet);
+          break;
+
+        case socket_io_parser_1.PacketType.BINARY_EVENT:
+          this.onevent(packet);
+          break;
+
+        case socket_io_parser_1.PacketType.ACK:
+          this.onack(packet);
+          break;
+
+        case socket_io_parser_1.PacketType.BINARY_ACK:
+          this.onack(packet);
+          break;
+
+        case socket_io_parser_1.PacketType.DISCONNECT:
+          this.ondisconnect();
+          break;
+
+        case socket_io_parser_1.PacketType.CONNECT_ERROR:
+          var err = new Error(packet.data.message); // @ts-ignore
+
+          err.data = packet.data.data;
+          this.emitReserved("connect_error", err);
+          break;
+      }
+    }
+    /**
+     * Called upon a server event.
+     *
+     * @param packet
+     * @private
+     */
+
+  }, {
+    key: "onevent",
+    value: function onevent(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) {
+        this.emitEvent(args);
+      } else {
+        this.receiveBuffer.push(Object.freeze(args));
+      }
+    }
+  }, {
+    key: "emitEvent",
+    value: function emitEvent(args) {
+      if (this._anyListeners && this._anyListeners.length) {
+        var listeners = this._anyListeners.slice();
+
+        var _iterator = _createForOfIteratorHelper(listeners),
+            _step;
+
+        try {
+          for (_iterator.s(); !(_step = _iterator.n()).done;) {
+            var listener = _step.value;
+            listener.apply(this, args);
+          }
+        } catch (err) {
+          _iterator.e(err);
+        } finally {
+          _iterator.f();
+        }
+      }
+
+      _get(_getPrototypeOf(Socket.prototype), "emit", this).apply(this, args);
+    }
+    /**
+     * Produces an ack callback to emit with an event.
+     *
+     * @private
+     */
+
+  }, {
+    key: "ack",
+    value: function ack(id) {
+      var self = this;
+      var sent = false;
+      return function () {
+        // prevent double callbacks
+        if (sent) return;
+        sent = true;
+
+        for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
+          args[_key3] = arguments[_key3];
+        }
+
+        debug("sending ack %j", args);
+        self.packet({
+          type: socket_io_parser_1.PacketType.ACK,
+          id: id,
+          data: args
+        });
+      };
+    }
+    /**
+     * Called upon a server acknowlegement.
+     *
+     * @param packet
+     * @private
+     */
+
+  }, {
+    key: "onack",
+    value: function onack(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.
+     *
+     * @private
+     */
+
+  }, {
+    key: "onconnect",
+    value: function onconnect(id) {
+      debug("socket connected with id %s", id);
+      this.id = id;
+      this.connected = true;
+      this.disconnected = false;
+      this.emitBuffered();
+      this.emitReserved("connect");
+    }
+    /**
+     * Emit buffered events (received and emitted).
+     *
+     * @private
+     */
+
+  }, {
+    key: "emitBuffered",
+    value: function emitBuffered() {
+      var _this3 = this;
+
+      this.receiveBuffer.forEach(function (args) {
+        return _this3.emitEvent(args);
+      });
+      this.receiveBuffer = [];
+      this.sendBuffer.forEach(function (packet) {
+        return _this3.packet(packet);
+      });
+      this.sendBuffer = [];
+    }
+    /**
+     * Called upon server disconnect.
+     *
+     * @private
+     */
+
+  }, {
+    key: "ondisconnect",
+    value: function ondisconnect() {
+      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.
+     *
+     * @private
+     */
+
+  }, {
+    key: "destroy",
+    value: function destroy() {
+      if (this.subs) {
+        // clean subscriptions to avoid reconnections
+        this.subs.forEach(function (subDestroy) {
+          return subDestroy();
+        });
+        this.subs = undefined;
+      }
+
+      this.io["_destroy"](this);
+    }
+    /**
+     * Disconnects the socket manually.
+     *
+     * @return self
+     * @public
+     */
+
+  }, {
+    key: "disconnect",
+    value: function disconnect() {
+      if (this.connected) {
+        debug("performing disconnect (%s)", this.nsp);
+        this.packet({
+          type: socket_io_parser_1.PacketType.DISCONNECT
+        });
+      } // remove socket from pool
+
+
+      this.destroy();
+
+      if (this.connected) {
+        // fire events
+        this.onclose("io client disconnect");
+      }
+
+      return this;
+    }
+    /**
+     * Alias for disconnect()
+     *
+     * @return self
+     * @public
+     */
+
+  }, {
+    key: "close",
+    value: function close() {
+      return this.disconnect();
+    }
+    /**
+     * Sets the compress flag.
+     *
+     * @param compress - if `true`, compresses the sending data
+     * @return self
+     * @public
+     */
+
+  }, {
+    key: "compress",
+    value: function compress(_compress) {
+      this.flags.compress = _compress;
+      return this;
+    }
+    /**
+     * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not
+     * ready to send messages.
+     *
+     * @returns self
+     * @public
+     */
+
+  }, {
+    key: "volatile",
+    get: function get() {
+      this.flags["volatile"] = true;
+      return this;
+    }
+    /**
+     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
+     * callback.
+     *
+     * @param listener
+     * @public
+     */
+
+  }, {
+    key: "onAny",
+    value: function onAny(listener) {
+      this._anyListeners = this._anyListeners || [];
+
+      this._anyListeners.push(listener);
+
+      return this;
+    }
+    /**
+     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
+     * callback. The listener is added to the beginning of the listeners array.
+     *
+     * @param listener
+     * @public
+     */
+
+  }, {
+    key: "prependAny",
+    value: function prependAny(listener) {
+      this._anyListeners = this._anyListeners || [];
+
+      this._anyListeners.unshift(listener);
+
+      return this;
+    }
+    /**
+     * Removes the listener that will be fired when any event is emitted.
+     *
+     * @param listener
+     * @public
+     */
+
+  }, {
+    key: "offAny",
+    value: function offAny(listener) {
+      if (!this._anyListeners) {
+        return this;
+      }
+
+      if (listener) {
+        var listeners = this._anyListeners;
+
+        for (var i = 0; i < listeners.length; i++) {
+          if (listener === listeners[i]) {
+            listeners.splice(i, 1);
+            return this;
+          }
+        }
+      } else {
+        this._anyListeners = [];
+      }
+
+      return this;
+    }
+    /**
+     * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,
+     * e.g. to remove listeners.
+     *
+     * @public
+     */
+
+  }, {
+    key: "listenersAny",
+    value: function listenersAny() {
+      return this._anyListeners || [];
+    }
+  }]);
+
+  return Socket;
+}(typed_events_1.StrictEventEmitter);
+
+exports.Socket = Socket;
+
+/***/ }),
+
+/***/ "./build/typed-events.js":
+/*!*******************************!*\
+  !*** ./build/typed-events.js ***!
+  \*******************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }
+
+function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.StrictEventEmitter = void 0;
+
+var Emitter = __webpack_require__(/*! component-emitter */ "./node_modules/component-emitter/index.js");
+/**
+ * Strictly typed version of an `EventEmitter`. A `TypedEventEmitter` takes type
+ * parameters for mappings of event names to event data types, and strictly
+ * types method calls to the `EventEmitter` according to these event maps.
+ *
+ * @typeParam ListenEvents - `EventsMap` of user-defined events that can be
+ * listened to with `on` or `once`
+ * @typeParam EmitEvents - `EventsMap` of user-defined events that can be
+ * emitted with `emit`
+ * @typeParam ReservedEvents - `EventsMap` of reserved events, that can be
+ * emitted by socket.io with `emitReserved`, and can be listened to with
+ * `listen`.
+ */
+
+
+var StrictEventEmitter = /*#__PURE__*/function (_Emitter) {
+  _inherits(StrictEventEmitter, _Emitter);
+
+  var _super = _createSuper(StrictEventEmitter);
+
+  function StrictEventEmitter() {
+    _classCallCheck(this, StrictEventEmitter);
+
+    return _super.apply(this, arguments);
+  }
+
+  _createClass(StrictEventEmitter, [{
+    key: "on",
+    value:
+    /**
+     * Adds the `listener` function as an event listener for `ev`.
+     *
+     * @param ev Name of the event
+     * @param listener Callback function
+     */
+    function on(ev, listener) {
+      _get(_getPrototypeOf(StrictEventEmitter.prototype), "on", this).call(this, ev, listener);
+
+      return this;
+    }
+    /**
+     * Adds a one-time `listener` function as an event listener for `ev`.
+     *
+     * @param ev Name of the event
+     * @param listener Callback function
+     */
+
+  }, {
+    key: "once",
+    value: function once(ev, listener) {
+      _get(_getPrototypeOf(StrictEventEmitter.prototype), "once", this).call(this, ev, listener);
+
+      return this;
+    }
+    /**
+     * Emits an event.
+     *
+     * @param ev Name of the event
+     * @param args Values to send to listeners of this event
+     */
+
+  }, {
+    key: "emit",
+    value: function emit(ev) {
+      var _get2;
+
+      for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+        args[_key - 1] = arguments[_key];
+      }
+
+      (_get2 = _get(_getPrototypeOf(StrictEventEmitter.prototype), "emit", this)).call.apply(_get2, [this, ev].concat(args));
+
+      return this;
+    }
+    /**
+     * Emits a reserved event.
+     *
+     * This method is `protected`, so that only a class extending
+     * `StrictEventEmitter` can emit its own reserved events.
+     *
+     * @param ev Reserved event name
+     * @param args Arguments to emit along with the event
+     */
+
+  }, {
+    key: "emitReserved",
+    value: function emitReserved(ev) {
+      var _get3;
+
+      for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+        args[_key2 - 1] = arguments[_key2];
+      }
+
+      (_get3 = _get(_getPrototypeOf(StrictEventEmitter.prototype), "emit", this)).call.apply(_get3, [this, ev].concat(args));
+
+      return this;
+    }
+    /**
+     * Returns the listeners listening to an event.
+     *
+     * @param event Event name
+     * @returns Array of listeners subscribed to `event`
+     */
+
+  }, {
+    key: "listeners",
+    value: function listeners(event) {
+      return _get(_getPrototypeOf(StrictEventEmitter.prototype), "listeners", this).call(this, event);
+    }
+  }]);
+
+  return StrictEventEmitter;
+}(Emitter);
+
+exports.StrictEventEmitter = StrictEventEmitter;
+
+/***/ }),
+
+/***/ "./build/url.js":
+/*!**********************!*\
+  !*** ./build/url.js ***!
+  \**********************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.url = void 0;
+
+var parseuri = __webpack_require__(/*! parseuri */ "./node_modules/parseuri/index.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("socket.io-client:url");
+/**
+ * URL parser.
+ *
+ * @param uri - url
+ * @param path - the request path of the connection
+ * @param loc - An object meant to mimic window.location.
+ *        Defaults to window.location.
+ * @public
+ */
+
+
+function url(uri) {
+  var path = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : "";
+  var loc = arguments.length > 2 ? arguments[2] : undefined;
+  var obj = uri; // default to window.location
+
+  loc = loc || typeof location !== "undefined" && location;
+  if (null == uri) uri = loc.protocol + "//" + loc.host; // relative path support
+
+  if (typeof uri === "string") {
+    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 + path; // define href
+
+  obj.href = obj.protocol + "://" + host + (loc && loc.port === obj.port ? "" : ":" + obj.port);
+  return obj;
+}
+
+exports.url = url;
+
+/***/ }),
+
+/***/ "./node_modules/backo2/index.js":
+/*!**************************************!*\
+  !*** ./node_modules/backo2/index.js ***!
+  \**************************************/
+/*! no static exports found */
+/***/ (function(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;
+};
+
+/***/ }),
+
+/***/ "./node_modules/component-emitter/index.js":
+/*!*************************************************!*\
+  !*** ./node_modules/component-emitter/index.js ***!
+  \*************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+/**
+ * Expose `Emitter`.
+ */
+if (true) {
+  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['$' + event];
+    return this;
+  } // remove specific handler
+
+
+  var cb;
+
+  for (var i = 0; i < callbacks.length; i++) {
+    cb = callbacks[i];
+
+    if (cb === fn || cb.fn === fn) {
+      callbacks.splice(i, 1);
+      break;
+    }
+  } // Remove event specific arrays for event types that no
+  // one is subscribed for to avoid memory leak.
+
+
+  if (callbacks.length === 0) {
+    delete this._callbacks['$' + event];
+  }
+
+  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 = new Array(arguments.length - 1),
+      callbacks = this._callbacks['$' + event];
+
+  for (var i = 1; i < arguments.length; i++) {
+    args[i - 1] = arguments[i];
+  }
+
+  if (callbacks) {
+    callbacks = callbacks.slice(0);
+
+    for (var i = 0, len = callbacks.length; i < len; ++i) {
+      callbacks[i].apply(this, args);
+    }
+  }
+
+  return this;
+};
+/**
+ * Return array of callbacks for `event`.
+ *
+ * @param {String} event
+ * @return {Array}
+ * @api public
+ */
+
+
+Emitter.prototype.listeners = function (event) {
+  this._callbacks = this._callbacks || {};
+  return this._callbacks['$' + 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;
+};
+
+/***/ }),
+
+/***/ "./node_modules/debug/src/browser.js":
+/*!*******************************************!*\
+  !*** ./node_modules/debug/src/browser.js ***!
+  \*******************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+/* eslint-env browser */
+
+/**
+ * This is the web browser implementation of `debug()`.
+ */
+exports.formatArgs = formatArgs;
+exports.save = save;
+exports.load = load;
+exports.useColors = useColors;
+exports.storage = localstorage();
+
+exports.destroy = function () {
+  var warned = false;
+  return function () {
+    if (!warned) {
+      warned = true;
+      console.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');
+    }
+  };
+}();
+/**
+ * Colors.
+ */
+
+
+exports.colors = ['#0000CC', '#0000FF', '#0033CC', '#0033FF', '#0066CC', '#0066FF', '#0099CC', '#0099FF', '#00CC00', '#00CC33', '#00CC66', '#00CC99', '#00CCCC', '#00CCFF', '#3300CC', '#3300FF', '#3333CC', '#3333FF', '#3366CC', '#3366FF', '#3399CC', '#3399FF', '#33CC00', '#33CC33', '#33CC66', '#33CC99', '#33CCCC', '#33CCFF', '#6600CC', '#6600FF', '#6633CC', '#6633FF', '#66CC00', '#66CC33', '#9900CC', '#9900FF', '#9933CC', '#9933FF', '#99CC00', '#99CC33', '#CC0000', '#CC0033', '#CC0066', '#CC0099', '#CC00CC', '#CC00FF', '#CC3300', '#CC3333', '#CC3366', '#CC3399', '#CC33CC', '#CC33FF', '#CC6600', '#CC6633', '#CC9900', '#CC9933', '#CCCC00', '#CCCC33', '#FF0000', '#FF0033', '#FF0066', '#FF0099', '#FF00CC', '#FF00FF', '#FF3300', '#FF3333', '#FF3366', '#FF3399', '#FF33CC', '#FF33FF', '#FF6600', '#FF6633', '#FF9900', '#FF9933', '#FFCC00', '#FFCC33'];
+/**
+ * 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
+ */
+// eslint-disable-next-line complexity
+
+function useColors() {
+  // NB: In an Electron preload script, document will be defined but not fully
+  // initialized. Since we know we're in Chrome, we'll just detect this case
+  // explicitly
+  if (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {
+    return true;
+  } // Internet Explorer and Edge do not support colors.
+
+
+  if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
+    return false;
+  } // 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' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance || // Is firebug? http://stackoverflow.com/a/398120/376773
+  typeof window !== 'undefined' && window.console && (window.console.firebug || window.console.exception && window.console.table) || // Is firefox >= v31?
+  // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
+  typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31 || // Double check webkit in userAgent just in case we are in a worker
+  typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/);
+}
+/**
+ * Colorize log arguments if enabled.
+ *
+ * @api public
+ */
+
+
+function formatArgs(args) {
+  args[0] = (this.useColors ? '%c' : '') + this.namespace + (this.useColors ? ' %c' : ' ') + args[0] + (this.useColors ? '%c ' : ' ') + '+' + module.exports.humanize(this.diff);
+
+  if (!this.useColors) {
+    return;
+  }
+
+  var c = 'color: ' + this.color;
+  args.splice(1, 0, c, 'color: inherit'); // 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-zA-Z%]/g, function (match) {
+    if (match === '%%') {
+      return;
+    }
+
+    index++;
+
+    if (match === '%c') {
+      // We only are interested in the *last* %c
+      // (the user may have provided their own)
+      lastC = index;
+    }
+  });
+  args.splice(lastC, 0, c);
+}
+/**
+ * Invokes `console.debug()` when available.
+ * No-op when `console.debug` is not a "function".
+ * If `console.debug` is not available, falls back
+ * to `console.log`.
+ *
+ * @api public
+ */
+
+
+exports.log = console.debug || console.log || function () {};
+/**
+ * Save `namespaces`.
+ *
+ * @param {String} namespaces
+ * @api private
+ */
+
+
+function save(namespaces) {
+  try {
+    if (namespaces) {
+      exports.storage.setItem('debug', namespaces);
+    } else {
+      exports.storage.removeItem('debug');
+    }
+  } catch (error) {// Swallow
+    // XXX (@Qix-) should we be logging these?
+  }
+}
+/**
+ * Load `namespaces`.
+ *
+ * @return {String} returns the previously persisted debug modes
+ * @api private
+ */
+
+
+function load() {
+  var r;
+
+  try {
+    r = exports.storage.getItem('debug');
+  } catch (error) {// Swallow
+    // XXX (@Qix-) should we be logging these?
+  } // If debug isn't set in LS, and we're in Electron, try to load $DEBUG
+
+
+  if (!r && typeof process !== 'undefined' && 'env' in process) {
+    r = process.env.DEBUG;
+  }
+
+  return r;
+}
+/**
+ * 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 {
+    // TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context
+    // The Browser also has localStorage in the global context.
+    return localStorage;
+  } catch (error) {// Swallow
+    // XXX (@Qix-) should we be logging these?
+  }
+}
+
+module.exports = __webpack_require__(/*! ./common */ "./node_modules/debug/src/common.js")(exports);
+var formatters = module.exports.formatters;
+/**
+ * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
+ */
+
+formatters.j = function (v) {
+  try {
+    return JSON.stringify(v);
+  } catch (error) {
+    return '[UnexpectedJSONParseError]: ' + error.message;
+  }
+};
+
+/***/ }),
+
+/***/ "./node_modules/debug/src/common.js":
+/*!******************************************!*\
+  !*** ./node_modules/debug/src/common.js ***!
+  \******************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }
+
+function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
+
+function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
+
+function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter); }
+
+function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }
+
+function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
+
+/**
+ * This is the common logic for both the Node.js and web browser
+ * implementations of `debug()`.
+ */
+function setup(env) {
+  createDebug.debug = createDebug;
+  createDebug["default"] = createDebug;
+  createDebug.coerce = coerce;
+  createDebug.disable = disable;
+  createDebug.enable = enable;
+  createDebug.enabled = enabled;
+  createDebug.humanize = __webpack_require__(/*! ms */ "./node_modules/ms/index.js");
+  createDebug.destroy = destroy;
+  Object.keys(env).forEach(function (key) {
+    createDebug[key] = env[key];
+  });
+  /**
+  * The currently active debug mode names, and names to skip.
+  */
+
+  createDebug.names = [];
+  createDebug.skips = [];
+  /**
+  * Map of special "%n" handling functions, for the debug "format" argument.
+  *
+  * Valid key names are a single, lower or upper-case letter, i.e. "n" and "N".
+  */
+
+  createDebug.formatters = {};
+  /**
+  * Selects a color for a debug namespace
+  * @param {String} namespace The namespace string for the for the debug instance to be colored
+  * @return {Number|String} An ANSI color code for the given namespace
+  * @api private
+  */
+
+  function selectColor(namespace) {
+    var hash = 0;
+
+    for (var i = 0; i < namespace.length; i++) {
+      hash = (hash << 5) - hash + namespace.charCodeAt(i);
+      hash |= 0; // Convert to 32bit integer
+    }
+
+    return createDebug.colors[Math.abs(hash) % createDebug.colors.length];
+  }
+
+  createDebug.selectColor = selectColor;
+  /**
+  * Create a debugger with the given `namespace`.
+  *
+  * @param {String} namespace
+  * @return {Function}
+  * @api public
+  */
+
+  function createDebug(namespace) {
+    var prevTime;
+    var enableOverride = null;
+
+    function debug() {
+      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+        args[_key] = arguments[_key];
+      }
+
+      // Disabled?
+      if (!debug.enabled) {
+        return;
+      }
+
+      var self = debug; // Set `diff` timestamp
+
+      var curr = Number(new Date());
+      var ms = curr - (prevTime || curr);
+      self.diff = ms;
+      self.prev = prevTime;
+      self.curr = curr;
+      prevTime = curr;
+      args[0] = createDebug.coerce(args[0]);
+
+      if (typeof args[0] !== 'string') {
+        // Anything else let's inspect with %O
+        args.unshift('%O');
+      } // Apply any `formatters` transformations
+
+
+      var index = 0;
+      args[0] = args[0].replace(/%([a-zA-Z%])/g, function (match, format) {
+        // If we encounter an escaped % then don't increase the array index
+        if (match === '%%') {
+          return '%';
+        }
+
+        index++;
+        var formatter = createDebug.formatters[format];
+
+        if (typeof formatter === 'function') {
+          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 (colors, etc.)
+
+      createDebug.formatArgs.call(self, args);
+      var logFn = self.log || createDebug.log;
+      logFn.apply(self, args);
+    }
+
+    debug.namespace = namespace;
+    debug.useColors = createDebug.useColors();
+    debug.color = createDebug.selectColor(namespace);
+    debug.extend = extend;
+    debug.destroy = createDebug.destroy; // XXX Temporary. Will be removed in the next major release.
+
+    Object.defineProperty(debug, 'enabled', {
+      enumerable: true,
+      configurable: false,
+      get: function get() {
+        return enableOverride === null ? createDebug.enabled(namespace) : enableOverride;
+      },
+      set: function set(v) {
+        enableOverride = v;
+      }
+    }); // Env-specific initialization logic for debug instances
+
+    if (typeof createDebug.init === 'function') {
+      createDebug.init(debug);
+    }
+
+    return debug;
+  }
+
+  function extend(namespace, delimiter) {
+    var newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);
+    newDebug.log = this.log;
+    return newDebug;
+  }
+  /**
+  * Enables a debug mode by namespaces. This can include modes
+  * separated by a colon and wildcards.
+  *
+  * @param {String} namespaces
+  * @api public
+  */
+
+
+  function enable(namespaces) {
+    createDebug.save(namespaces);
+    createDebug.names = [];
+    createDebug.skips = [];
+    var i;
+    var split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
+    var len = split.length;
+
+    for (i = 0; i < len; i++) {
+      if (!split[i]) {
+        // ignore empty strings
+        continue;
+      }
+
+      namespaces = split[i].replace(/\*/g, '.*?');
+
+      if (namespaces[0] === '-') {
+        createDebug.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
+      } else {
+        createDebug.names.push(new RegExp('^' + namespaces + '$'));
+      }
+    }
+  }
+  /**
+  * Disable debug output.
+  *
+  * @return {String} namespaces
+  * @api public
+  */
+
+
+  function disable() {
+    var namespaces = [].concat(_toConsumableArray(createDebug.names.map(toNamespace)), _toConsumableArray(createDebug.skips.map(toNamespace).map(function (namespace) {
+      return '-' + namespace;
+    }))).join(',');
+    createDebug.enable('');
+    return namespaces;
+  }
+  /**
+  * Returns true if the given mode name is enabled, false otherwise.
+  *
+  * @param {String} name
+  * @return {Boolean}
+  * @api public
+  */
+
+
+  function enabled(name) {
+    if (name[name.length - 1] === '*') {
+      return true;
+    }
+
+    var i;
+    var len;
+
+    for (i = 0, len = createDebug.skips.length; i < len; i++) {
+      if (createDebug.skips[i].test(name)) {
+        return false;
+      }
+    }
+
+    for (i = 0, len = createDebug.names.length; i < len; i++) {
+      if (createDebug.names[i].test(name)) {
+        return true;
+      }
+    }
+
+    return false;
+  }
+  /**
+  * Convert regexp to namespace
+  *
+  * @param {RegExp} regxep
+  * @return {String} namespace
+  * @api private
+  */
+
+
+  function toNamespace(regexp) {
+    return regexp.toString().substring(2, regexp.toString().length - 2).replace(/\.\*\?$/, '*');
+  }
+  /**
+  * Coerce `val`.
+  *
+  * @param {Mixed} val
+  * @return {Mixed}
+  * @api private
+  */
+
+
+  function coerce(val) {
+    if (val instanceof Error) {
+      return val.stack || val.message;
+    }
+
+    return val;
+  }
+  /**
+  * XXX DO NOT USE. This is a temporary stub function.
+  * XXX It WILL be removed in the next major release.
+  */
+
+
+  function destroy() {
+    console.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');
+  }
+
+  createDebug.enable(createDebug.load());
+  return createDebug;
+}
+
+module.exports = setup;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/globalThis.browser.js":
+/*!*****************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/globalThis.browser.js ***!
+  \*****************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports) {
+
+module.exports = function () {
+  if (typeof self !== "undefined") {
+    return self;
+  } else if (typeof window !== "undefined") {
+    return window;
+  } else {
+    return Function("return this")();
+  }
+}();
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/index.js":
+/*!****************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/index.js ***!
+  \****************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+var Socket = __webpack_require__(/*! ./socket */ "./node_modules/engine.io-client/lib/socket.js");
+
+module.exports = function (uri, opts) {
+  return new Socket(uri, opts);
+};
+/**
+ * Expose deps for legacy compatibility
+ * and standalone browser access.
+ */
+
+
+module.exports.Socket = Socket;
+module.exports.protocol = Socket.protocol; // this is an int
+
+module.exports.Transport = __webpack_require__(/*! ./transport */ "./node_modules/engine.io-client/lib/transport.js");
+module.exports.transports = __webpack_require__(/*! ./transports/index */ "./node_modules/engine.io-client/lib/transports/index.js");
+module.exports.parser = __webpack_require__(/*! engine.io-parser */ "./node_modules/engine.io-parser/lib/index.js");
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/socket.js":
+/*!*****************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/socket.js ***!
+  \*****************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+var transports = __webpack_require__(/*! ./transports/index */ "./node_modules/engine.io-client/lib/transports/index.js");
+
+var Emitter = __webpack_require__(/*! component-emitter */ "./node_modules/component-emitter/index.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("engine.io-client:socket");
+
+var parser = __webpack_require__(/*! engine.io-parser */ "./node_modules/engine.io-parser/lib/index.js");
+
+var parseuri = __webpack_require__(/*! parseuri */ "./node_modules/parseuri/index.js");
+
+var parseqs = __webpack_require__(/*! parseqs */ "./node_modules/parseqs/index.js");
+
+var Socket = /*#__PURE__*/function (_Emitter) {
+  _inherits(Socket, _Emitter);
+
+  var _super = _createSuper(Socket);
+
+  /**
+   * Socket constructor.
+   *
+   * @param {String|Object} uri or options
+   * @param {Object} options
+   * @api public
+   */
+  function Socket(uri) {
+    var _this;
+
+    var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+
+    _classCallCheck(this, Socket);
+
+    _this = _super.call(this);
+
+    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 : typeof location !== "undefined" && "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.hostname = opts.hostname || (typeof location !== "undefined" ? location.hostname : "localhost");
+    _this.port = opts.port || (typeof location !== "undefined" && location.port ? location.port : _this.secure ? 443 : 80);
+    _this.transports = opts.transports || ["polling", "websocket"];
+    _this.readyState = "";
+    _this.writeBuffer = [];
+    _this.prevBufferLen = 0;
+    _this.opts = _extends({
+      path: "/engine.io",
+      agent: false,
+      withCredentials: false,
+      upgrade: true,
+      jsonp: true,
+      timestampParam: "t",
+      rememberUpgrade: false,
+      rejectUnauthorized: true,
+      perMessageDeflate: {
+        threshold: 1024
+      },
+      transportOptions: {},
+      closeOnBeforeunload: true
+    }, opts);
+    _this.opts.path = _this.opts.path.replace(/\/$/, "") + "/";
+
+    if (typeof _this.opts.query === "string") {
+      _this.opts.query = parseqs.decode(_this.opts.query);
+    } // set on handshake
+
+
+    _this.id = null;
+    _this.upgrades = null;
+    _this.pingInterval = null;
+    _this.pingTimeout = null; // set on heartbeat
+
+    _this.pingTimeoutTimer = null;
+
+    if (typeof addEventListener === "function") {
+      if (_this.opts.closeOnBeforeunload) {
+        // Firefox closes the connection when the "beforeunload" event is emitted but not Chrome. This event listener
+        // ensures every browser behaves the same (no "disconnect" event at the Socket.IO level when the page is
+        // closed/reloaded)
+        addEventListener("beforeunload", function () {
+          if (_this.transport) {
+            // silently close the transport
+            _this.transport.removeAllListeners();
+
+            _this.transport.close();
+          }
+        }, false);
+      }
+
+      if (_this.hostname !== "localhost") {
+        _this.offlineEventListener = function () {
+          _this.onClose("transport close");
+        };
+
+        addEventListener("offline", _this.offlineEventListener, false);
+      }
+    }
+
+    _this.open();
+
+    return _this;
+  }
+  /**
+   * Creates transport of the given type.
+   *
+   * @param {String} transport name
+   * @return {Transport}
+   * @api private
+   */
+
+
+  _createClass(Socket, [{
+    key: "createTransport",
+    value: function createTransport(name) {
+      debug('creating transport "%s"', name);
+      var query = clone(this.opts.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 opts = _extends({}, this.opts.transportOptions[name], this.opts, {
+        query: query,
+        socket: this,
+        hostname: this.hostname,
+        secure: this.secure,
+        port: this.port
+      });
+
+      debug("options: %j", opts);
+      return new transports[name](opts);
+    }
+    /**
+     * Initializes transport to use and starts probe.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "open",
+    value: function open() {
+      var _this2 = this;
+
+      var transport;
+
+      if (this.opts.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
+        setTimeout(function () {
+          _this2.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) {
+        debug("error while creating transport: %s", e);
+        this.transports.shift();
+        this.open();
+        return;
+      }
+
+      transport.open();
+      this.setTransport(transport);
+    }
+    /**
+     * Sets the current transport. Disables the existing one (if any).
+     *
+     * @api private
+     */
+
+  }, {
+    key: "setTransport",
+    value: function setTransport(transport) {
+      var _this3 = this;
+
+      debug("setting transport %s", transport.name);
+
+      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", this.onDrain.bind(this)).on("packet", this.onPacket.bind(this)).on("error", this.onError.bind(this)).on("close", function () {
+        _this3.onClose("transport close");
+      });
+    }
+    /**
+     * Probes a transport.
+     *
+     * @param {String} transport name
+     * @api private
+     */
+
+  }, {
+    key: "probe",
+    value: function probe(name) {
+      var _this4 = this;
+
+      debug('probing transport "%s"', name);
+      var transport = this.createTransport(name, {
+        probe: 1
+      });
+      var failed = false;
+      Socket.priorWebsocketSuccess = false;
+
+      var onTransportOpen = function onTransportOpen() {
+        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);
+            _this4.upgrading = true;
+
+            _this4.emit("upgrading", transport);
+
+            if (!transport) return;
+            Socket.priorWebsocketSuccess = "websocket" === transport.name;
+            debug('pausing current transport "%s"', _this4.transport.name);
+
+            _this4.transport.pause(function () {
+              if (failed) return;
+              if ("closed" === _this4.readyState) return;
+              debug("changing transport and sending upgrade packet");
+              cleanup();
+
+              _this4.setTransport(transport);
+
+              transport.send([{
+                type: "upgrade"
+              }]);
+
+              _this4.emit("upgrade", transport);
+
+              transport = null;
+              _this4.upgrading = false;
+
+              _this4.flush();
+            });
+          } else {
+            debug('probe transport "%s" failed', name);
+            var err = new Error("probe error");
+            err.transport = transport.name;
+
+            _this4.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
+
+
+      var onerror = 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);
+
+        _this4.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
+
+
+      var cleanup = function cleanup() {
+        transport.removeListener("open", onTransportOpen);
+        transport.removeListener("error", onerror);
+        transport.removeListener("close", onTransportClose);
+
+        _this4.removeListener("close", onclose);
+
+        _this4.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
+     */
+
+  }, {
+    key: "onOpen",
+    value: function onOpen() {
+      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.opts.upgrade && this.transport.pause) {
+        debug("starting upgrade probes");
+        var i = 0;
+        var l = this.upgrades.length;
+
+        for (; i < l; i++) {
+          this.probe(this.upgrades[i]);
+        }
+      }
+    }
+    /**
+     * Handles a packet.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onPacket",
+    value: function onPacket(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(JSON.parse(packet.data));
+            break;
+
+          case "ping":
+            this.resetPingTimeout();
+            this.sendPacket("pong");
+            this.emit("ping");
+            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
+     */
+
+  }, {
+    key: "onHandshake",
+    value: function onHandshake(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.resetPingTimeout();
+    }
+    /**
+     * Sets and resets ping timeout timer based on server pings.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "resetPingTimeout",
+    value: function resetPingTimeout() {
+      var _this5 = this;
+
+      clearTimeout(this.pingTimeoutTimer);
+      this.pingTimeoutTimer = setTimeout(function () {
+        _this5.onClose("ping timeout");
+      }, this.pingInterval + this.pingTimeout);
+
+      if (this.opts.autoUnref) {
+        this.pingTimeoutTimer.unref();
+      }
+    }
+    /**
+     * Called on `drain` event
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onDrain",
+    value: function onDrain() {
+      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
+     */
+
+  }, {
+    key: "flush",
+    value: function flush() {
+      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
+     */
+
+  }, {
+    key: "write",
+    value: function write(msg, options, fn) {
+      this.sendPacket("message", msg, options, fn);
+      return this;
+    }
+  }, {
+    key: "send",
+    value: function send(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
+     */
+
+  }, {
+    key: "sendPacket",
+    value: function sendPacket(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
+     */
+
+  }, {
+    key: "close",
+    value: function close() {
+      var _this6 = this;
+
+      var close = function close() {
+        _this6.onClose("forced close");
+
+        debug("socket closing - telling transport to close");
+
+        _this6.transport.close();
+      };
+
+      var cleanupAndClose = function cleanupAndClose() {
+        _this6.removeListener("upgrade", cleanupAndClose);
+
+        _this6.removeListener("upgradeError", cleanupAndClose);
+
+        close();
+      };
+
+      var waitForUpgrade = function waitForUpgrade() {
+        // wait for upgrade to finish since we can't send packets while pausing a transport
+        _this6.once("upgrade", cleanupAndClose);
+
+        _this6.once("upgradeError", cleanupAndClose);
+      };
+
+      if ("opening" === this.readyState || "open" === this.readyState) {
+        this.readyState = "closing";
+
+        if (this.writeBuffer.length) {
+          this.once("drain", function () {
+            if (_this6.upgrading) {
+              waitForUpgrade();
+            } else {
+              close();
+            }
+          });
+        } else if (this.upgrading) {
+          waitForUpgrade();
+        } else {
+          close();
+        }
+      }
+
+      return this;
+    }
+    /**
+     * Called upon transport error
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onError",
+    value: function onError(err) {
+      debug("socket error %j", err);
+      Socket.priorWebsocketSuccess = false;
+      this.emit("error", err);
+      this.onClose("transport error", err);
+    }
+    /**
+     * Called upon transport close.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onClose",
+    value: function onClose(reason, desc) {
+      if ("opening" === this.readyState || "open" === this.readyState || "closing" === this.readyState) {
+        debug('socket close with reason: "%s"', reason); // 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();
+
+        if (typeof removeEventListener === "function") {
+          removeEventListener("offline", this.offlineEventListener, false);
+        } // 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
+
+        this.writeBuffer = [];
+        this.prevBufferLen = 0;
+      }
+    }
+    /**
+     * Filters upgrades, returning only those matching client transports.
+     *
+     * @param {Array} server upgrades
+     * @api private
+     *
+     */
+
+  }, {
+    key: "filterUpgrades",
+    value: function filterUpgrades(upgrades) {
+      var filteredUpgrades = [];
+      var i = 0;
+      var j = upgrades.length;
+
+      for (; i < j; i++) {
+        if (~this.transports.indexOf(upgrades[i])) filteredUpgrades.push(upgrades[i]);
+      }
+
+      return filteredUpgrades;
+    }
+  }]);
+
+  return Socket;
+}(Emitter);
+
+Socket.priorWebsocketSuccess = false;
+/**
+ * Protocol version.
+ *
+ * @api public
+ */
+
+Socket.protocol = parser.protocol; // this is an int
+
+function clone(obj) {
+  var o = {};
+
+  for (var i in obj) {
+    if (obj.hasOwnProperty(i)) {
+      o[i] = obj[i];
+    }
+  }
+
+  return o;
+}
+
+module.exports = Socket;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/transport.js":
+/*!********************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/transport.js ***!
+  \********************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+var parser = __webpack_require__(/*! engine.io-parser */ "./node_modules/engine.io-parser/lib/index.js");
+
+var Emitter = __webpack_require__(/*! component-emitter */ "./node_modules/component-emitter/index.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("engine.io-client:transport");
+
+var Transport = /*#__PURE__*/function (_Emitter) {
+  _inherits(Transport, _Emitter);
+
+  var _super = _createSuper(Transport);
+
+  /**
+   * Transport abstract constructor.
+   *
+   * @param {Object} options.
+   * @api private
+   */
+  function Transport(opts) {
+    var _this;
+
+    _classCallCheck(this, Transport);
+
+    _this = _super.call(this);
+    _this.opts = opts;
+    _this.query = opts.query;
+    _this.readyState = "";
+    _this.socket = opts.socket;
+    return _this;
+  }
+  /**
+   * Emits an error.
+   *
+   * @param {String} str
+   * @return {Transport} for chaining
+   * @api public
+   */
+
+
+  _createClass(Transport, [{
+    key: "onError",
+    value: function onError(msg, desc) {
+      var err = new Error(msg);
+      err.type = "TransportError";
+      err.description = desc;
+      this.emit("error", err);
+      return this;
+    }
+    /**
+     * Opens the transport.
+     *
+     * @api public
+     */
+
+  }, {
+    key: "open",
+    value: function open() {
+      if ("closed" === this.readyState || "" === this.readyState) {
+        this.readyState = "opening";
+        this.doOpen();
+      }
+
+      return this;
+    }
+    /**
+     * Closes the transport.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "close",
+    value: function close() {
+      if ("opening" === this.readyState || "open" === this.readyState) {
+        this.doClose();
+        this.onClose();
+      }
+
+      return this;
+    }
+    /**
+     * Sends multiple packets.
+     *
+     * @param {Array} packets
+     * @api private
+     */
+
+  }, {
+    key: "send",
+    value: function send(packets) {
+      if ("open" === this.readyState) {
+        this.write(packets);
+      } else {
+        // this might happen if the transport was silently closed in the beforeunload event handler
+        debug("transport is not open, discarding packets");
+      }
+    }
+    /**
+     * Called upon open
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onOpen",
+    value: function onOpen() {
+      this.readyState = "open";
+      this.writable = true;
+      this.emit("open");
+    }
+    /**
+     * Called with data.
+     *
+     * @param {String} data
+     * @api private
+     */
+
+  }, {
+    key: "onData",
+    value: function onData(data) {
+      var packet = parser.decodePacket(data, this.socket.binaryType);
+      this.onPacket(packet);
+    }
+    /**
+     * Called with a decoded packet.
+     */
+
+  }, {
+    key: "onPacket",
+    value: function onPacket(packet) {
+      this.emit("packet", packet);
+    }
+    /**
+     * Called upon close.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onClose",
+    value: function onClose() {
+      this.readyState = "closed";
+      this.emit("close");
+    }
+  }]);
+
+  return Transport;
+}(Emitter);
+
+module.exports = Transport;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/transports/index.js":
+/*!***************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/transports/index.js ***!
+  \***************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+var XMLHttpRequest = __webpack_require__(/*! ../../contrib/xmlhttprequest-ssl/XMLHttpRequest */ "./node_modules/engine.io-client/lib/xmlhttprequest.js");
+
+var XHR = __webpack_require__(/*! ./polling-xhr */ "./node_modules/engine.io-client/lib/transports/polling-xhr.js");
+
+var JSONP = __webpack_require__(/*! ./polling-jsonp */ "./node_modules/engine.io-client/lib/transports/polling-jsonp.js");
+
+var websocket = __webpack_require__(/*! ./websocket */ "./node_modules/engine.io-client/lib/transports/websocket.js");
+
+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 (typeof location !== "undefined") {
+    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);
+  }
+}
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/transports/polling-jsonp.js":
+/*!***********************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/transports/polling-jsonp.js ***!
+  \***********************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }
+
+function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+var Polling = __webpack_require__(/*! ./polling */ "./node_modules/engine.io-client/lib/transports/polling.js");
+
+var globalThis = __webpack_require__(/*! ../globalThis */ "./node_modules/engine.io-client/lib/globalThis.browser.js");
+
+var rNewline = /\n/g;
+var rEscapedNewline = /\\n/g;
+/**
+ * Global JSONP callbacks.
+ */
+
+var callbacks;
+
+var JSONPPolling = /*#__PURE__*/function (_Polling) {
+  _inherits(JSONPPolling, _Polling);
+
+  var _super = _createSuper(JSONPPolling);
+
+  /**
+   * JSONP Polling constructor.
+   *
+   * @param {Object} opts.
+   * @api public
+   */
+  function JSONPPolling(opts) {
+    var _this;
+
+    _classCallCheck(this, JSONPPolling);
+
+    _this = _super.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
+      callbacks = globalThis.___eio = globalThis.___eio || [];
+    } // callback identifier
+
+
+    _this.index = callbacks.length; // add callback to jsonp global
+
+    callbacks.push(_this.onData.bind(_assertThisInitialized(_this))); // append to query string
+
+    _this.query.j = _this.index;
+    return _this;
+  }
+  /**
+   * JSONP only supports binary as base64 encoded strings
+   */
+
+
+  _createClass(JSONPPolling, [{
+    key: "supportsBinary",
+    get: function get() {
+      return false;
+    }
+    /**
+     * Closes the socket.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "doClose",
+    value: function doClose() {
+      if (this.script) {
+        // prevent spurious errors from being emitted when the window is unloaded
+        this.script.onerror = function () {};
+
+        this.script.parentNode.removeChild(this.script);
+        this.script = null;
+      }
+
+      if (this.form) {
+        this.form.parentNode.removeChild(this.form);
+        this.form = null;
+        this.iframe = null;
+      }
+
+      _get(_getPrototypeOf(JSONPPolling.prototype), "doClose", this).call(this);
+    }
+    /**
+     * Starts a poll cycle.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "doPoll",
+    value: function doPoll() {
+      var _this2 = 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) {
+        _this2.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
+     */
+
+  }, {
+    key: "doWrite",
+    value: function doWrite(data, fn) {
+      var _this3 = this;
+
+      var iframe;
+
+      if (!this.form) {
+        var form = document.createElement("form");
+        var area = document.createElement("textarea");
+        var id = this.iframeId = "eio_iframe_" + this.index;
+        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();
+      }
+
+      var initIframe = function initIframe() {
+        if (_this3.iframe) {
+          try {
+            _this3.form.removeChild(_this3.iframe);
+          } catch (e) {
+            _this3.onError("jsonp polling iframe removal error", e);
+          }
+        }
+
+        try {
+          // ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
+          var html = '<iframe src="javascript:0" name="' + _this3.iframeId + '">';
+          iframe = document.createElement(html);
+        } catch (e) {
+          iframe = document.createElement("iframe");
+          iframe.name = _this3.iframeId;
+          iframe.src = "javascript:0";
+        }
+
+        iframe.id = _this3.iframeId;
+
+        _this3.form.appendChild(iframe);
+
+        _this3.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 (_this3.iframe.readyState === "complete") {
+            complete();
+          }
+        };
+      } else {
+        this.iframe.onload = complete;
+      }
+    }
+  }]);
+
+  return JSONPPolling;
+}(Polling);
+
+module.exports = JSONPPolling;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/transports/polling-xhr.js":
+/*!*********************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/transports/polling-xhr.js ***!
+  \*********************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+/* global attachEvent */
+var XMLHttpRequest = __webpack_require__(/*! ../../contrib/xmlhttprequest-ssl/XMLHttpRequest */ "./node_modules/engine.io-client/lib/xmlhttprequest.js");
+
+var Polling = __webpack_require__(/*! ./polling */ "./node_modules/engine.io-client/lib/transports/polling.js");
+
+var Emitter = __webpack_require__(/*! component-emitter */ "./node_modules/component-emitter/index.js");
+
+var _require = __webpack_require__(/*! ../util */ "./node_modules/engine.io-client/lib/util.js"),
+    pick = _require.pick;
+
+var globalThis = __webpack_require__(/*! ../globalThis */ "./node_modules/engine.io-client/lib/globalThis.browser.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("engine.io-client:polling-xhr");
+/**
+ * Empty function
+ */
+
+
+function empty() {}
+
+var hasXHR2 = function () {
+  var xhr = new XMLHttpRequest({
+    xdomain: false
+  });
+  return null != xhr.responseType;
+}();
+
+var XHR = /*#__PURE__*/function (_Polling) {
+  _inherits(XHR, _Polling);
+
+  var _super = _createSuper(XHR);
+
+  /**
+   * XHR Polling constructor.
+   *
+   * @param {Object} opts
+   * @api public
+   */
+  function XHR(opts) {
+    var _this;
+
+    _classCallCheck(this, XHR);
+
+    _this = _super.call(this, opts);
+
+    if (typeof location !== "undefined") {
+      var isSSL = "https:" === location.protocol;
+      var port = location.port; // some user agents have empty `location.port`
+
+      if (!port) {
+        port = isSSL ? 443 : 80;
+      }
+
+      _this.xd = typeof location !== "undefined" && opts.hostname !== location.hostname || port !== opts.port;
+      _this.xs = opts.secure !== isSSL;
+    }
+    /**
+     * XHR supports binary
+     */
+
+
+    var forceBase64 = opts && opts.forceBase64;
+    _this.supportsBinary = hasXHR2 && !forceBase64;
+    return _this;
+  }
+  /**
+   * Creates a request.
+   *
+   * @param {String} method
+   * @api private
+   */
+
+
+  _createClass(XHR, [{
+    key: "request",
+    value: function request() {
+      var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+
+      _extends(opts, {
+        xd: this.xd,
+        xs: this.xs
+      }, this.opts);
+
+      return new Request(this.uri(), opts);
+    }
+    /**
+     * Sends data.
+     *
+     * @param {String} data to send.
+     * @param {Function} called upon flush.
+     * @api private
+     */
+
+  }, {
+    key: "doWrite",
+    value: function doWrite(data, fn) {
+      var _this2 = this;
+
+      var req = this.request({
+        method: "POST",
+        data: data
+      });
+      req.on("success", fn);
+      req.on("error", function (err) {
+        _this2.onError("xhr post error", err);
+      });
+    }
+    /**
+     * Starts a poll cycle.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "doPoll",
+    value: function doPoll() {
+      var _this3 = this;
+
+      debug("xhr poll");
+      var req = this.request();
+      req.on("data", this.onData.bind(this));
+      req.on("error", function (err) {
+        _this3.onError("xhr poll error", err);
+      });
+      this.pollXhr = req;
+    }
+  }]);
+
+  return XHR;
+}(Polling);
+
+var Request = /*#__PURE__*/function (_Emitter) {
+  _inherits(Request, _Emitter);
+
+  var _super2 = _createSuper(Request);
+
+  /**
+   * Request constructor
+   *
+   * @param {Object} options
+   * @api public
+   */
+  function Request(uri, opts) {
+    var _this4;
+
+    _classCallCheck(this, Request);
+
+    _this4 = _super2.call(this);
+    _this4.opts = opts;
+    _this4.method = opts.method || "GET";
+    _this4.uri = uri;
+    _this4.async = false !== opts.async;
+    _this4.data = undefined !== opts.data ? opts.data : null;
+
+    _this4.create();
+
+    return _this4;
+  }
+  /**
+   * Creates the XHR object and sends the request.
+   *
+   * @api private
+   */
+
+
+  _createClass(Request, [{
+    key: "create",
+    value: function create() {
+      var _this5 = this;
+
+      var opts = pick(this.opts, "agent", "enablesXDR", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "autoUnref");
+      opts.xdomain = !!this.opts.xd;
+      opts.xscheme = !!this.opts.xs;
+      var xhr = this.xhr = new XMLHttpRequest(opts);
+
+      try {
+        debug("xhr open %s: %s", this.method, this.uri);
+        xhr.open(this.method, this.uri, this.async);
+
+        try {
+          if (this.opts.extraHeaders) {
+            xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);
+
+            for (var i in this.opts.extraHeaders) {
+              if (this.opts.extraHeaders.hasOwnProperty(i)) {
+                xhr.setRequestHeader(i, this.opts.extraHeaders[i]);
+              }
+            }
+          }
+        } catch (e) {}
+
+        if ("POST" === this.method) {
+          try {
+            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 = this.opts.withCredentials;
+        }
+
+        if (this.opts.requestTimeout) {
+          xhr.timeout = this.opts.requestTimeout;
+        }
+
+        if (this.hasXDR()) {
+          xhr.onload = function () {
+            _this5.onLoad();
+          };
+
+          xhr.onerror = function () {
+            _this5.onError(xhr.responseText);
+          };
+        } else {
+          xhr.onreadystatechange = function () {
+            if (4 !== xhr.readyState) return;
+
+            if (200 === xhr.status || 1223 === xhr.status) {
+              _this5.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 () {
+                _this5.onError(typeof xhr.status === "number" ? xhr.status : 0);
+              }, 0);
+            }
+          };
+        }
+
+        debug("xhr data %s", this.data);
+        xhr.send(this.data);
+      } catch (e) {
+        // Need to defer since .create() is called directly from the constructor
+        // and thus the 'error' event can only be only bound *after* this exception
+        // occurs.  Therefore, also, we cannot throw here at all.
+        setTimeout(function () {
+          _this5.onError(e);
+        }, 0);
+        return;
+      }
+
+      if (typeof document !== "undefined") {
+        this.index = Request.requestsCount++;
+        Request.requests[this.index] = this;
+      }
+    }
+    /**
+     * Called upon successful response.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onSuccess",
+    value: function onSuccess() {
+      this.emit("success");
+      this.cleanup();
+    }
+    /**
+     * Called if we have data.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onData",
+    value: function onData(data) {
+      this.emit("data", data);
+      this.onSuccess();
+    }
+    /**
+     * Called upon error.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onError",
+    value: function onError(err) {
+      this.emit("error", err);
+      this.cleanup(true);
+    }
+    /**
+     * Cleans up house.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "cleanup",
+    value: function cleanup(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 (typeof document !== "undefined") {
+        delete Request.requests[this.index];
+      }
+
+      this.xhr = null;
+    }
+    /**
+     * Called upon load.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onLoad",
+    value: function onLoad() {
+      var data = this.xhr.responseText;
+
+      if (data !== null) {
+        this.onData(data);
+      }
+    }
+    /**
+     * Check if it has XDomainRequest.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "hasXDR",
+    value: function hasXDR() {
+      return typeof XDomainRequest !== "undefined" && !this.xs && this.enablesXDR;
+    }
+    /**
+     * Aborts the request.
+     *
+     * @api public
+     */
+
+  }, {
+    key: "abort",
+    value: function abort() {
+      this.cleanup();
+    }
+  }]);
+
+  return Request;
+}(Emitter);
+/**
+ * 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 (typeof document !== "undefined") {
+  if (typeof attachEvent === "function") {
+    attachEvent("onunload", unloadHandler);
+  } else if (typeof addEventListener === "function") {
+    var terminationEvent = "onpagehide" in globalThis ? "pagehide" : "unload";
+    addEventListener(terminationEvent, unloadHandler, false);
+  }
+}
+
+function unloadHandler() {
+  for (var i in Request.requests) {
+    if (Request.requests.hasOwnProperty(i)) {
+      Request.requests[i].abort();
+    }
+  }
+}
+
+module.exports = XHR;
+module.exports.Request = Request;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/transports/polling.js":
+/*!*****************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/transports/polling.js ***!
+  \*****************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+var Transport = __webpack_require__(/*! ../transport */ "./node_modules/engine.io-client/lib/transport.js");
+
+var parseqs = __webpack_require__(/*! parseqs */ "./node_modules/parseqs/index.js");
+
+var parser = __webpack_require__(/*! engine.io-parser */ "./node_modules/engine.io-parser/lib/index.js");
+
+var yeast = __webpack_require__(/*! yeast */ "./node_modules/yeast/index.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("engine.io-client:polling");
+
+var Polling = /*#__PURE__*/function (_Transport) {
+  _inherits(Polling, _Transport);
+
+  var _super = _createSuper(Polling);
+
+  function Polling() {
+    _classCallCheck(this, Polling);
+
+    return _super.apply(this, arguments);
+  }
+
+  _createClass(Polling, [{
+    key: "name",
+    get:
+    /**
+     * Transport name.
+     */
+    function get() {
+      return "polling";
+    }
+    /**
+     * Opens the socket (triggers polling). We write a PING message to determine
+     * when the transport is open.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "doOpen",
+    value: function doOpen() {
+      this.poll();
+    }
+    /**
+     * Pauses polling.
+     *
+     * @param {Function} callback upon buffers are flushed and transport is paused
+     * @api private
+     */
+
+  }, {
+    key: "pause",
+    value: function pause(onPause) {
+      var _this = this;
+
+      this.readyState = "pausing";
+
+      var pause = function pause() {
+        debug("paused");
+        _this.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
+     */
+
+  }, {
+    key: "poll",
+    value: function poll() {
+      debug("polling");
+      this.polling = true;
+      this.doPoll();
+      this.emit("poll");
+    }
+    /**
+     * Overloads onData to detect payloads.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onData",
+    value: function onData(data) {
+      var _this2 = this;
+
+      debug("polling got data %s", data);
+
+      var callback = function callback(packet) {
+        // if its the first message we consider the transport open
+        if ("opening" === _this2.readyState && packet.type === "open") {
+          _this2.onOpen();
+        } // if its a close packet, we close the ongoing requests
+
+
+        if ("close" === packet.type) {
+          _this2.onClose();
+
+          return false;
+        } // otherwise bypass onData and handle the message
+
+
+        _this2.onPacket(packet);
+      }; // decode payload
+
+
+      parser.decodePayload(data, this.socket.binaryType).forEach(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
+     */
+
+  }, {
+    key: "doClose",
+    value: function doClose() {
+      var _this3 = this;
+
+      var close = function close() {
+        debug("writing close packet");
+
+        _this3.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
+     */
+
+  }, {
+    key: "write",
+    value: function write(packets) {
+      var _this4 = this;
+
+      this.writable = false;
+      parser.encodePayload(packets, function (data) {
+        _this4.doWrite(data, function () {
+          _this4.writable = true;
+
+          _this4.emit("drain");
+        });
+      });
+    }
+    /**
+     * Generates uri for connection.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "uri",
+    value: function uri() {
+      var query = this.query || {};
+      var schema = this.opts.secure ? "https" : "http";
+      var port = ""; // cache busting is forced
+
+      if (false !== this.opts.timestampRequests) {
+        query[this.opts.timestampParam] = yeast();
+      }
+
+      if (!this.supportsBinary && !query.sid) {
+        query.b64 = 1;
+      }
+
+      query = parseqs.encode(query); // avoid port if default for schema
+
+      if (this.opts.port && ("https" === schema && Number(this.opts.port) !== 443 || "http" === schema && Number(this.opts.port) !== 80)) {
+        port = ":" + this.opts.port;
+      } // prepend ? to query
+
+
+      if (query.length) {
+        query = "?" + query;
+      }
+
+      var ipv6 = this.opts.hostname.indexOf(":") !== -1;
+      return schema + "://" + (ipv6 ? "[" + this.opts.hostname + "]" : this.opts.hostname) + port + this.opts.path + query;
+    }
+  }]);
+
+  return Polling;
+}(Transport);
+
+module.exports = Polling;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/transports/websocket-constructor.browser.js":
+/*!***************************************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/transports/websocket-constructor.browser.js ***!
+  \***************************************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+var globalThis = __webpack_require__(/*! ../globalThis */ "./node_modules/engine.io-client/lib/globalThis.browser.js");
+
+var nextTick = function () {
+  var isPromiseAvailable = typeof Promise === "function" && typeof Promise.resolve === "function";
+
+  if (isPromiseAvailable) {
+    return function (cb) {
+      return Promise.resolve().then(cb);
+    };
+  } else {
+    return function (cb) {
+      return setTimeout(cb, 0);
+    };
+  }
+}();
+
+module.exports = {
+  WebSocket: globalThis.WebSocket || globalThis.MozWebSocket,
+  usingBrowserWebSocket: true,
+  defaultBinaryType: "arraybuffer",
+  nextTick: nextTick
+};
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/transports/websocket.js":
+/*!*******************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/transports/websocket.js ***!
+  \*******************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+var Transport = __webpack_require__(/*! ../transport */ "./node_modules/engine.io-client/lib/transport.js");
+
+var parser = __webpack_require__(/*! engine.io-parser */ "./node_modules/engine.io-parser/lib/index.js");
+
+var parseqs = __webpack_require__(/*! parseqs */ "./node_modules/parseqs/index.js");
+
+var yeast = __webpack_require__(/*! yeast */ "./node_modules/yeast/index.js");
+
+var _require = __webpack_require__(/*! ../util */ "./node_modules/engine.io-client/lib/util.js"),
+    pick = _require.pick;
+
+var _require2 = __webpack_require__(/*! ./websocket-constructor */ "./node_modules/engine.io-client/lib/transports/websocket-constructor.browser.js"),
+    WebSocket = _require2.WebSocket,
+    usingBrowserWebSocket = _require2.usingBrowserWebSocket,
+    defaultBinaryType = _require2.defaultBinaryType,
+    nextTick = _require2.nextTick;
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("engine.io-client:websocket"); // detect ReactNative environment
+
+
+var isReactNative = typeof navigator !== "undefined" && typeof navigator.product === "string" && navigator.product.toLowerCase() === "reactnative";
+
+var WS = /*#__PURE__*/function (_Transport) {
+  _inherits(WS, _Transport);
+
+  var _super = _createSuper(WS);
+
+  /**
+   * WebSocket transport constructor.
+   *
+   * @api {Object} connection options
+   * @api public
+   */
+  function WS(opts) {
+    var _this;
+
+    _classCallCheck(this, WS);
+
+    _this = _super.call(this, opts);
+    _this.supportsBinary = !opts.forceBase64;
+    return _this;
+  }
+  /**
+   * Transport name.
+   *
+   * @api public
+   */
+
+
+  _createClass(WS, [{
+    key: "name",
+    get: function get() {
+      return "websocket";
+    }
+    /**
+     * Opens socket.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "doOpen",
+    value: function doOpen() {
+      if (!this.check()) {
+        // let probe timeout
+        return;
+      }
+
+      var uri = this.uri();
+      var protocols = this.opts.protocols; // React Native only supports the 'headers' option, and will print a warning if anything else is passed
+
+      var opts = isReactNative ? {} : pick(this.opts, "agent", "perMessageDeflate", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "localAddress", "protocolVersion", "origin", "maxPayload", "family", "checkServerIdentity");
+
+      if (this.opts.extraHeaders) {
+        opts.headers = this.opts.extraHeaders;
+      }
+
+      try {
+        this.ws = usingBrowserWebSocket && !isReactNative ? protocols ? new WebSocket(uri, protocols) : new WebSocket(uri) : new WebSocket(uri, protocols, opts);
+      } catch (err) {
+        return this.emit("error", err);
+      }
+
+      this.ws.binaryType = this.socket.binaryType || defaultBinaryType;
+      this.addEventListeners();
+    }
+    /**
+     * Adds event listeners to the socket
+     *
+     * @api private
+     */
+
+  }, {
+    key: "addEventListeners",
+    value: function addEventListeners() {
+      var _this2 = this;
+
+      this.ws.onopen = function () {
+        if (_this2.opts.autoUnref) {
+          _this2.ws._socket.unref();
+        }
+
+        _this2.onOpen();
+      };
+
+      this.ws.onclose = this.onClose.bind(this);
+
+      this.ws.onmessage = function (ev) {
+        return _this2.onData(ev.data);
+      };
+
+      this.ws.onerror = function (e) {
+        return _this2.onError("websocket error", e);
+      };
+    }
+    /**
+     * Writes data to socket.
+     *
+     * @param {Array} array of packets.
+     * @api private
+     */
+
+  }, {
+    key: "write",
+    value: function write(packets) {
+      var _this3 = this;
+
+      this.writable = false; // encodePacket efficient as it uses WS framing
+      // no need for encodePayload
+
+      var _loop = function _loop(i) {
+        var packet = packets[i];
+        var lastPacket = i === packets.length - 1;
+        parser.encodePacket(packet, _this3.supportsBinary, function (data) {
+          // always create a new object (GH-437)
+          var opts = {};
+
+          if (!usingBrowserWebSocket) {
+            if (packet.options) {
+              opts.compress = packet.options.compress;
+            }
+
+            if (_this3.opts.perMessageDeflate) {
+              var len = "string" === typeof data ? Buffer.byteLength(data) : data.length;
+
+              if (len < _this3.opts.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 (usingBrowserWebSocket) {
+              // TypeError is thrown when passing the second argument on Safari
+              _this3.ws.send(data);
+            } else {
+              _this3.ws.send(data, opts);
+            }
+          } catch (e) {
+            debug("websocket closed before onclose event");
+          }
+
+          if (lastPacket) {
+            // fake drain
+            // defer to next tick to allow Socket to clear writeBuffer
+            nextTick(function () {
+              _this3.writable = true;
+
+              _this3.emit("drain");
+            });
+          }
+        });
+      };
+
+      for (var i = 0; i < packets.length; i++) {
+        _loop(i);
+      }
+    }
+    /**
+     * Called upon close
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onClose",
+    value: function onClose() {
+      Transport.prototype.onClose.call(this);
+    }
+    /**
+     * Closes socket.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "doClose",
+    value: function doClose() {
+      if (typeof this.ws !== "undefined") {
+        this.ws.close();
+        this.ws = null;
+      }
+    }
+    /**
+     * Generates uri for connection.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "uri",
+    value: function uri() {
+      var query = this.query || {};
+      var schema = this.opts.secure ? "wss" : "ws";
+      var port = ""; // avoid port if default for schema
+
+      if (this.opts.port && ("wss" === schema && Number(this.opts.port) !== 443 || "ws" === schema && Number(this.opts.port) !== 80)) {
+        port = ":" + this.opts.port;
+      } // append timestamp to URI
+
+
+      if (this.opts.timestampRequests) {
+        query[this.opts.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.opts.hostname.indexOf(":") !== -1;
+      return schema + "://" + (ipv6 ? "[" + this.opts.hostname + "]" : this.opts.hostname) + port + this.opts.path + query;
+    }
+    /**
+     * Feature detection for WebSocket.
+     *
+     * @return {Boolean} whether this transport is available.
+     * @api public
+     */
+
+  }, {
+    key: "check",
+    value: function check() {
+      return !!WebSocket && !("__initialize" in WebSocket && this.name === WS.prototype.name);
+    }
+  }]);
+
+  return WS;
+}(Transport);
+
+module.exports = WS;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/util.js":
+/*!***************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/util.js ***!
+  \***************************************************/
+/*! no static exports found */
+/***/ (function(module, exports) {
+
+module.exports.pick = function (obj) {
+  for (var _len = arguments.length, attr = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+    attr[_key - 1] = arguments[_key];
+  }
+
+  return attr.reduce(function (acc, k) {
+    if (obj.hasOwnProperty(k)) {
+      acc[k] = obj[k];
+    }
+
+    return acc;
+  }, {});
+};
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/xmlhttprequest.js":
+/*!*************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/xmlhttprequest.js ***!
+  \*************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+// browser shim for xmlhttprequest module
+var hasCORS = __webpack_require__(/*! has-cors */ "./node_modules/has-cors/index.js");
+
+var globalThis = __webpack_require__(/*! ./globalThis */ "./node_modules/engine.io-client/lib/globalThis.browser.js");
+
+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 globalThis[["Active"].concat("Object").join("X")]("Microsoft.XMLHTTP");
+    } catch (e) {}
+  }
+};
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-parser/lib/commons.js":
+/*!******************************************************!*\
+  !*** ./node_modules/engine.io-parser/lib/commons.js ***!
+  \******************************************************/
+/*! no static exports found */
+/***/ (function(module, exports) {
+
+var PACKET_TYPES = Object.create(null); // no Map = no polyfill
+
+PACKET_TYPES["open"] = "0";
+PACKET_TYPES["close"] = "1";
+PACKET_TYPES["ping"] = "2";
+PACKET_TYPES["pong"] = "3";
+PACKET_TYPES["message"] = "4";
+PACKET_TYPES["upgrade"] = "5";
+PACKET_TYPES["noop"] = "6";
+var PACKET_TYPES_REVERSE = Object.create(null);
+Object.keys(PACKET_TYPES).forEach(function (key) {
+  PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;
+});
+var ERROR_PACKET = {
+  type: "error",
+  data: "parser error"
+};
+module.exports = {
+  PACKET_TYPES: PACKET_TYPES,
+  PACKET_TYPES_REVERSE: PACKET_TYPES_REVERSE,
+  ERROR_PACKET: ERROR_PACKET
+};
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-parser/lib/decodePacket.browser.js":
+/*!*******************************************************************!*\
+  !*** ./node_modules/engine.io-parser/lib/decodePacket.browser.js ***!
+  \*******************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+var _require = __webpack_require__(/*! ./commons */ "./node_modules/engine.io-parser/lib/commons.js"),
+    PACKET_TYPES_REVERSE = _require.PACKET_TYPES_REVERSE,
+    ERROR_PACKET = _require.ERROR_PACKET;
+
+var withNativeArrayBuffer = typeof ArrayBuffer === "function";
+var base64decoder;
+
+if (withNativeArrayBuffer) {
+  base64decoder = __webpack_require__(/*! base64-arraybuffer */ "./node_modules/engine.io-parser/node_modules/base64-arraybuffer/lib/base64-arraybuffer.js");
+}
+
+var decodePacket = function decodePacket(encodedPacket, binaryType) {
+  if (typeof encodedPacket !== "string") {
+    return {
+      type: "message",
+      data: mapBinary(encodedPacket, binaryType)
+    };
+  }
+
+  var type = encodedPacket.charAt(0);
+
+  if (type === "b") {
+    return {
+      type: "message",
+      data: decodeBase64Packet(encodedPacket.substring(1), binaryType)
+    };
+  }
+
+  var packetType = PACKET_TYPES_REVERSE[type];
+
+  if (!packetType) {
+    return ERROR_PACKET;
+  }
+
+  return encodedPacket.length > 1 ? {
+    type: PACKET_TYPES_REVERSE[type],
+    data: encodedPacket.substring(1)
+  } : {
+    type: PACKET_TYPES_REVERSE[type]
+  };
+};
+
+var decodeBase64Packet = function decodeBase64Packet(data, binaryType) {
+  if (base64decoder) {
+    var decoded = base64decoder.decode(data);
+    return mapBinary(decoded, binaryType);
+  } else {
+    return {
+      base64: true,
+      data: data
+    }; // fallback for old browsers
+  }
+};
+
+var mapBinary = function mapBinary(data, binaryType) {
+  switch (binaryType) {
+    case "blob":
+      return data instanceof ArrayBuffer ? new Blob([data]) : data;
+
+    case "arraybuffer":
+    default:
+      return data;
+    // assuming the data is already an ArrayBuffer
+  }
+};
+
+module.exports = decodePacket;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-parser/lib/encodePacket.browser.js":
+/*!*******************************************************************!*\
+  !*** ./node_modules/engine.io-parser/lib/encodePacket.browser.js ***!
+  \*******************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+var _require = __webpack_require__(/*! ./commons */ "./node_modules/engine.io-parser/lib/commons.js"),
+    PACKET_TYPES = _require.PACKET_TYPES;
+
+var withNativeBlob = typeof Blob === "function" || typeof Blob !== "undefined" && Object.prototype.toString.call(Blob) === "[object BlobConstructor]";
+var withNativeArrayBuffer = typeof ArrayBuffer === "function"; // ArrayBuffer.isView method is not defined in IE10
+
+var isView = function isView(obj) {
+  return typeof ArrayBuffer.isView === "function" ? ArrayBuffer.isView(obj) : obj && obj.buffer instanceof ArrayBuffer;
+};
+
+var encodePacket = function encodePacket(_ref, supportsBinary, callback) {
+  var type = _ref.type,
+      data = _ref.data;
+
+  if (withNativeBlob && data instanceof Blob) {
+    if (supportsBinary) {
+      return callback(data);
+    } else {
+      return encodeBlobAsBase64(data, callback);
+    }
+  } else if (withNativeArrayBuffer && (data instanceof ArrayBuffer || isView(data))) {
+    if (supportsBinary) {
+      return callback(data instanceof ArrayBuffer ? data : data.buffer);
+    } else {
+      return encodeBlobAsBase64(new Blob([data]), callback);
+    }
+  } // plain string
+
+
+  return callback(PACKET_TYPES[type] + (data || ""));
+};
+
+var encodeBlobAsBase64 = function encodeBlobAsBase64(data, callback) {
+  var fileReader = new FileReader();
+
+  fileReader.onload = function () {
+    var content = fileReader.result.split(",")[1];
+    callback("b" + content);
+  };
+
+  return fileReader.readAsDataURL(data);
+};
+
+module.exports = encodePacket;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-parser/lib/index.js":
+/*!****************************************************!*\
+  !*** ./node_modules/engine.io-parser/lib/index.js ***!
+  \****************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+var encodePacket = __webpack_require__(/*! ./encodePacket */ "./node_modules/engine.io-parser/lib/encodePacket.browser.js");
+
+var decodePacket = __webpack_require__(/*! ./decodePacket */ "./node_modules/engine.io-parser/lib/decodePacket.browser.js");
+
+var SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text
+
+var encodePayload = function encodePayload(packets, callback) {
+  // some packets may be added to the array while encoding, so the initial length must be saved
+  var length = packets.length;
+  var encodedPackets = new Array(length);
+  var count = 0;
+  packets.forEach(function (packet, i) {
+    // force base64 encoding for binary packets
+    encodePacket(packet, false, function (encodedPacket) {
+      encodedPackets[i] = encodedPacket;
+
+      if (++count === length) {
+        callback(encodedPackets.join(SEPARATOR));
+      }
+    });
+  });
+};
+
+var decodePayload = function decodePayload(encodedPayload, binaryType) {
+  var encodedPackets = encodedPayload.split(SEPARATOR);
+  var packets = [];
+
+  for (var i = 0; i < encodedPackets.length; i++) {
+    var decodedPacket = decodePacket(encodedPackets[i], binaryType);
+    packets.push(decodedPacket);
+
+    if (decodedPacket.type === "error") {
+      break;
+    }
+  }
+
+  return packets;
+};
+
+module.exports = {
+  protocol: 4,
+  encodePacket: encodePacket,
+  encodePayload: encodePayload,
+  decodePacket: decodePacket,
+  decodePayload: decodePayload
+};
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-parser/node_modules/base64-arraybuffer/lib/base64-arraybuffer.js":
+/*!*************************************************************************************************!*\
+  !*** ./node_modules/engine.io-parser/node_modules/base64-arraybuffer/lib/base64-arraybuffer.js ***!
+  \*************************************************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports) {
+
+/*
+ * base64-arraybuffer
+ * https://github.com/niklasvh/base64-arraybuffer
+ *
+ * Copyright (c) 2012 Niklas von Hertzen
+ * Licensed under the MIT license.
+ */
+(function (chars) {
+  "use strict";
+
+  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 = chars.indexOf(base64[i]);
+      encoded2 = chars.indexOf(base64[i + 1]);
+      encoded3 = chars.indexOf(base64[i + 2]);
+      encoded4 = chars.indexOf(base64[i + 3]);
+      bytes[p++] = encoded1 << 2 | encoded2 >> 4;
+      bytes[p++] = (encoded2 & 15) << 4 | encoded3 >> 2;
+      bytes[p++] = (encoded3 & 3) << 6 | encoded4 & 63;
+    }
+
+    return arraybuffer;
+  };
+})("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/");
+
+/***/ }),
+
+/***/ "./node_modules/has-cors/index.js":
+/*!****************************************!*\
+  !*** ./node_modules/has-cors/index.js ***!
+  \****************************************/
+/*! no static exports found */
+/***/ (function(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;
+}
+
+/***/ }),
+
+/***/ "./node_modules/ms/index.js":
+/*!**********************************!*\
+  !*** ./node_modules/ms/index.js ***!
+  \**********************************/
+/*! no static exports found */
+/***/ (function(module, exports) {
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+/**
+ * Helpers.
+ */
+var s = 1000;
+var m = s * 60;
+var h = m * 60;
+var d = h * 24;
+var w = d * 7;
+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' && isFinite(val)) {
+    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 > 100) {
+    return;
+  }
+
+  var match = /^(-?(?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|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 'weeks':
+    case 'week':
+    case 'w':
+      return n * w;
+
+    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) {
+  var msAbs = Math.abs(ms);
+
+  if (msAbs >= d) {
+    return Math.round(ms / d) + 'd';
+  }
+
+  if (msAbs >= h) {
+    return Math.round(ms / h) + 'h';
+  }
+
+  if (msAbs >= m) {
+    return Math.round(ms / m) + 'm';
+  }
+
+  if (msAbs >= s) {
+    return Math.round(ms / s) + 's';
+  }
+
+  return ms + 'ms';
+}
+/**
+ * Long format for `ms`.
+ *
+ * @param {Number} ms
+ * @return {String}
+ * @api private
+ */
+
+
+function fmtLong(ms) {
+  var msAbs = Math.abs(ms);
+
+  if (msAbs >= d) {
+    return plural(ms, msAbs, d, 'day');
+  }
+
+  if (msAbs >= h) {
+    return plural(ms, msAbs, h, 'hour');
+  }
+
+  if (msAbs >= m) {
+    return plural(ms, msAbs, m, 'minute');
+  }
+
+  if (msAbs >= s) {
+    return plural(ms, msAbs, s, 'second');
+  }
+
+  return ms + ' ms';
+}
+/**
+ * Pluralization helper.
+ */
+
+
+function plural(ms, msAbs, n, name) {
+  var isPlural = msAbs >= n * 1.5;
+  return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');
+}
+
+/***/ }),
+
+/***/ "./node_modules/parseqs/index.js":
+/*!***************************************!*\
+  !*** ./node_modules/parseqs/index.js ***!
+  \***************************************/
+/*! no static exports found */
+/***/ (function(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;
+};
+
+/***/ }),
+
+/***/ "./node_modules/parseuri/index.js":
+/*!****************************************!*\
+  !*** ./node_modules/parseuri/index.js ***!
+  \****************************************/
+/*! no static exports found */
+/***/ (function(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;
+  }
+
+  uri.pathNames = pathNames(uri, uri['path']);
+  uri.queryKey = queryKey(uri, uri['query']);
+  return uri;
+};
+
+function pathNames(obj, path) {
+  var regx = /\/{2,9}/g,
+      names = path.replace(regx, "/").split("/");
+
+  if (path.substr(0, 1) == '/' || path.length === 0) {
+    names.splice(0, 1);
+  }
+
+  if (path.substr(path.length - 1, 1) == '/') {
+    names.splice(names.length - 1, 1);
+  }
+
+  return names;
+}
+
+function queryKey(uri, query) {
+  var data = {};
+  query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {
+    if ($1) {
+      data[$1] = $2;
+    }
+  });
+  return data;
+}
+
+/***/ }),
+
+/***/ "./node_modules/socket.io-parser/dist/binary.js":
+/*!******************************************************!*\
+  !*** ./node_modules/socket.io-parser/dist/binary.js ***!
+  \******************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.reconstructPacket = exports.deconstructPacket = void 0;
+
+var is_binary_1 = __webpack_require__(/*! ./is-binary */ "./node_modules/socket.io-parser/dist/is-binary.js");
+/**
+ * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.
+ *
+ * @param {Object} packet - socket.io event packet
+ * @return {Object} with deconstructed packet and list of buffers
+ * @public
+ */
+
+
+function deconstructPacket(packet) {
+  var buffers = [];
+  var packetData = packet.data;
+  var pack = packet;
+  pack.data = _deconstructPacket(packetData, buffers);
+  pack.attachments = buffers.length; // number of binary 'attachments'
+
+  return {
+    packet: pack,
+    buffers: buffers
+  };
+}
+
+exports.deconstructPacket = deconstructPacket;
+
+function _deconstructPacket(data, buffers) {
+  if (!data) return data;
+
+  if (is_binary_1.isBinary(data)) {
+    var placeholder = {
+      _placeholder: true,
+      num: buffers.length
+    };
+    buffers.push(data);
+    return placeholder;
+  } else if (Array.isArray(data)) {
+    var newData = new Array(data.length);
+
+    for (var i = 0; i < data.length; i++) {
+      newData[i] = _deconstructPacket(data[i], buffers);
+    }
+
+    return newData;
+  } else if (_typeof(data) === "object" && !(data instanceof Date)) {
+    var _newData = {};
+
+    for (var key in data) {
+      if (data.hasOwnProperty(key)) {
+        _newData[key] = _deconstructPacket(data[key], buffers);
+      }
+    }
+
+    return _newData;
+  }
+
+  return data;
+}
+/**
+ * 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
+ * @public
+ */
+
+
+function reconstructPacket(packet, buffers) {
+  packet.data = _reconstructPacket(packet.data, buffers);
+  packet.attachments = undefined; // no longer useful
+
+  return packet;
+}
+
+exports.reconstructPacket = reconstructPacket;
+
+function _reconstructPacket(data, buffers) {
+  if (!data) return data;
+
+  if (data && data._placeholder) {
+    return buffers[data.num]; // appropriate buffer (should be natural order anyway)
+  } else if (Array.isArray(data)) {
+    for (var i = 0; i < data.length; i++) {
+      data[i] = _reconstructPacket(data[i], buffers);
+    }
+  } else if (_typeof(data) === "object") {
+    for (var key in data) {
+      if (data.hasOwnProperty(key)) {
+        data[key] = _reconstructPacket(data[key], buffers);
+      }
+    }
+  }
+
+  return data;
+}
+
+/***/ }),
+
+/***/ "./node_modules/socket.io-parser/dist/index.js":
+/*!*****************************************************!*\
+  !*** ./node_modules/socket.io-parser/dist/index.js ***!
+  \*****************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }
+
+function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.Decoder = exports.Encoder = exports.PacketType = exports.protocol = void 0;
+
+var Emitter = __webpack_require__(/*! component-emitter */ "./node_modules/component-emitter/index.js");
+
+var binary_1 = __webpack_require__(/*! ./binary */ "./node_modules/socket.io-parser/dist/binary.js");
+
+var is_binary_1 = __webpack_require__(/*! ./is-binary */ "./node_modules/socket.io-parser/dist/is-binary.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("socket.io-parser");
+/**
+ * Protocol version.
+ *
+ * @public
+ */
+
+
+exports.protocol = 5;
+var PacketType;
+
+(function (PacketType) {
+  PacketType[PacketType["CONNECT"] = 0] = "CONNECT";
+  PacketType[PacketType["DISCONNECT"] = 1] = "DISCONNECT";
+  PacketType[PacketType["EVENT"] = 2] = "EVENT";
+  PacketType[PacketType["ACK"] = 3] = "ACK";
+  PacketType[PacketType["CONNECT_ERROR"] = 4] = "CONNECT_ERROR";
+  PacketType[PacketType["BINARY_EVENT"] = 5] = "BINARY_EVENT";
+  PacketType[PacketType["BINARY_ACK"] = 6] = "BINARY_ACK";
+})(PacketType = exports.PacketType || (exports.PacketType = {}));
+/**
+ * A socket.io Encoder instance
+ */
+
+
+var Encoder = /*#__PURE__*/function () {
+  function Encoder() {
+    _classCallCheck(this, Encoder);
+  }
+
+  _createClass(Encoder, [{
+    key: "encode",
+    value:
+    /**
+     * Encode a packet as a single string if non-binary, or as a
+     * buffer sequence, depending on packet type.
+     *
+     * @param {Object} obj - packet object
+     */
+    function encode(obj) {
+      debug("encoding packet %j", obj);
+
+      if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {
+        if (is_binary_1.hasBinary(obj)) {
+          obj.type = obj.type === PacketType.EVENT ? PacketType.BINARY_EVENT : PacketType.BINARY_ACK;
+          return this.encodeAsBinary(obj);
+        }
+      }
+
+      return [this.encodeAsString(obj)];
+    }
+    /**
+     * Encode packet as string.
+     */
+
+  }, {
+    key: "encodeAsString",
+    value: function encodeAsString(obj) {
+      // first is type
+      var str = "" + obj.type; // attachments if we have them
+
+      if (obj.type === PacketType.BINARY_EVENT || obj.type === PacketType.BINARY_ACK) {
+        str += obj.attachments + "-";
+      } // if we have a namespace other than `/`
+      // we append it followed by a comma `,`
+
+
+      if (obj.nsp && "/" !== obj.nsp) {
+        str += obj.nsp + ",";
+      } // immediately followed by the id
+
+
+      if (null != obj.id) {
+        str += obj.id;
+      } // json data
+
+
+      if (null != obj.data) {
+        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.
+     */
+
+  }, {
+    key: "encodeAsBinary",
+    value: function encodeAsBinary(obj) {
+      var deconstruction = binary_1.deconstructPacket(obj);
+      var pack = this.encodeAsString(deconstruction.packet);
+      var buffers = deconstruction.buffers;
+      buffers.unshift(pack); // add packet info to beginning of data list
+
+      return buffers; // write all the buffers
+    }
+  }]);
+
+  return Encoder;
+}();
+
+exports.Encoder = Encoder;
+/**
+ * A socket.io Decoder instance
+ *
+ * @return {Object} decoder
+ */
+
+var Decoder = /*#__PURE__*/function (_Emitter) {
+  _inherits(Decoder, _Emitter);
+
+  var _super = _createSuper(Decoder);
+
+  function Decoder() {
+    _classCallCheck(this, Decoder);
+
+    return _super.call(this);
+  }
+  /**
+   * Decodes an encoded packet string into packet JSON.
+   *
+   * @param {String} obj - encoded packet
+   */
+
+
+  _createClass(Decoder, [{
+    key: "add",
+    value: function add(obj) {
+      var packet;
+
+      if (typeof obj === "string") {
+        packet = this.decodeString(obj);
+
+        if (packet.type === PacketType.BINARY_EVENT || packet.type === PacketType.BINARY_ACK) {
+          // binary packet's json
+          this.reconstructor = new BinaryReconstructor(packet); // no attachments, labeled binary but no binary data to follow
+
+          if (packet.attachments === 0) {
+            _get(_getPrototypeOf(Decoder.prototype), "emit", this).call(this, "decoded", packet);
+          }
+        } else {
+          // non-binary full packet
+          _get(_getPrototypeOf(Decoder.prototype), "emit", this).call(this, "decoded", packet);
+        }
+      } else if (is_binary_1.isBinary(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;
+
+            _get(_getPrototypeOf(Decoder.prototype), "emit", this).call(this, "decoded", packet);
+          }
+        }
+      } else {
+        throw new Error("Unknown type: " + obj);
+      }
+    }
+    /**
+     * Decode a packet String (JSON data)
+     *
+     * @param {String} str
+     * @return {Object} packet
+     */
+
+  }, {
+    key: "decodeString",
+    value: function decodeString(str) {
+      var i = 0; // look up type
+
+      var p = {
+        type: Number(str.charAt(0))
+      };
+
+      if (PacketType[p.type] === undefined) {
+        throw new Error("unknown packet type " + p.type);
+      } // look up attachments if type binary
+
+
+      if (p.type === PacketType.BINARY_EVENT || p.type === PacketType.BINARY_ACK) {
+        var start = i + 1;
+
+        while (str.charAt(++i) !== "-" && i != str.length) {}
+
+        var buf = str.substring(start, i);
+
+        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)) {
+        var _start = i + 1;
+
+        while (++i) {
+          var c = str.charAt(i);
+          if ("," === c) break;
+          if (i === str.length) break;
+        }
+
+        p.nsp = str.substring(_start, i);
+      } else {
+        p.nsp = "/";
+      } // look up id
+
+
+      var next = str.charAt(i + 1);
+
+      if ("" !== next && Number(next) == next) {
+        var _start2 = i + 1;
+
+        while (++i) {
+          var _c = str.charAt(i);
+
+          if (null == _c || Number(_c) != _c) {
+            --i;
+            break;
+          }
+
+          if (i === str.length) break;
+        }
+
+        p.id = Number(str.substring(_start2, i + 1));
+      } // look up json data
+
+
+      if (str.charAt(++i)) {
+        var payload = tryParse(str.substr(i));
+
+        if (Decoder.isPayloadValid(p.type, payload)) {
+          p.data = payload;
+        } else {
+          throw new Error("invalid payload");
+        }
+      }
+
+      debug("decoded %s as %j", str, p);
+      return p;
+    }
+  }, {
+    key: "destroy",
+    value:
+    /**
+     * Deallocates a parser's resources
+     */
+    function destroy() {
+      if (this.reconstructor) {
+        this.reconstructor.finishedReconstruction();
+      }
+    }
+  }], [{
+    key: "isPayloadValid",
+    value: function isPayloadValid(type, payload) {
+      switch (type) {
+        case PacketType.CONNECT:
+          return _typeof(payload) === "object";
+
+        case PacketType.DISCONNECT:
+          return payload === undefined;
+
+        case PacketType.CONNECT_ERROR:
+          return typeof payload === "string" || _typeof(payload) === "object";
+
+        case PacketType.EVENT:
+        case PacketType.BINARY_EVENT:
+          return Array.isArray(payload) && payload.length > 0;
+
+        case PacketType.ACK:
+        case PacketType.BINARY_ACK:
+          return Array.isArray(payload);
+      }
+    }
+  }]);
+
+  return Decoder;
+}(Emitter);
+
+exports.Decoder = Decoder;
+
+function tryParse(str) {
+  try {
+    return JSON.parse(str);
+  } catch (e) {
+    return false;
+  }
+}
+/**
+ * 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
+ */
+
+
+var BinaryReconstructor = /*#__PURE__*/function () {
+  function BinaryReconstructor(packet) {
+    _classCallCheck(this, BinaryReconstructor);
+
+    this.packet = packet;
+    this.buffers = [];
+    this.reconPack = packet;
+  }
+  /**
+   * 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.
+   */
+
+
+  _createClass(BinaryReconstructor, [{
+    key: "takeBinaryData",
+    value: function takeBinaryData(binData) {
+      this.buffers.push(binData);
+
+      if (this.buffers.length === this.reconPack.attachments) {
+        // done with buffer list
+        var packet = binary_1.reconstructPacket(this.reconPack, this.buffers);
+        this.finishedReconstruction();
+        return packet;
+      }
+
+      return null;
+    }
+    /**
+     * Cleans up binary packet reconstruction variables.
+     */
+
+  }, {
+    key: "finishedReconstruction",
+    value: function finishedReconstruction() {
+      this.reconPack = null;
+      this.buffers = [];
+    }
+  }]);
+
+  return BinaryReconstructor;
+}();
+
+/***/ }),
+
+/***/ "./node_modules/socket.io-parser/dist/is-binary.js":
+/*!*********************************************************!*\
+  !*** ./node_modules/socket.io-parser/dist/is-binary.js ***!
+  \*********************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.hasBinary = exports.isBinary = void 0;
+var withNativeArrayBuffer = typeof ArrayBuffer === "function";
+
+var isView = function isView(obj) {
+  return typeof ArrayBuffer.isView === "function" ? ArrayBuffer.isView(obj) : obj.buffer instanceof ArrayBuffer;
+};
+
+var toString = Object.prototype.toString;
+var withNativeBlob = typeof Blob === "function" || typeof Blob !== "undefined" && toString.call(Blob) === "[object BlobConstructor]";
+var withNativeFile = typeof File === "function" || typeof File !== "undefined" && toString.call(File) === "[object FileConstructor]";
+/**
+ * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.
+ *
+ * @private
+ */
+
+function isBinary(obj) {
+  return withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj)) || withNativeBlob && obj instanceof Blob || withNativeFile && obj instanceof File;
+}
+
+exports.isBinary = isBinary;
+
+function hasBinary(obj, toJSON) {
+  if (!obj || _typeof(obj) !== "object") {
+    return false;
+  }
+
+  if (Array.isArray(obj)) {
+    for (var i = 0, l = obj.length; i < l; i++) {
+      if (hasBinary(obj[i])) {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  if (isBinary(obj)) {
+    return true;
+  }
+
+  if (obj.toJSON && typeof obj.toJSON === "function" && arguments.length === 1) {
+    return hasBinary(obj.toJSON(), true);
+  }
+
+  for (var key in obj) {
+    if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+exports.hasBinary = hasBinary;
+
+/***/ }),
+
+/***/ "./node_modules/yeast/index.js":
+/*!*************************************!*\
+  !*** ./node_modules/yeast/index.js ***!
+  \*************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"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;
+
+/***/ })
+
+/******/ });
+});
+//# sourceMappingURL=socket.io.js.map
\ No newline at end of file
diff --git a/client/lib/socket.io.js.map b/client/lib/socket.io.js.map
new file mode 100644
index 0000000..b7ef5ba
--- /dev/null
+++ b/client/lib/socket.io.js.map
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_a;\n        if (v === undefined)\n            return this._randomizationFactor;\n        this._randomizationFactor = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);\n        return this;\n    }\n    reconnectionDelayMax(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelayMax;\n        this._reconnectionDelayMax = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);\n        return this;\n    }\n    timeout(v) {\n        if (!arguments.length)\n            return this._timeout;\n        this._timeout = v;\n        return this;\n    }\n    /**\n     * Starts trying to reconnect if reconnection is enabled and we have not\n     * started reconnecting yet\n     *\n     * @private\n     */\n    maybeReconnectOnOpen() {\n        // Only try to reconnect if it's the first time we're connecting\n        if (!this._reconnecting &&\n            this._reconnection &&\n            this.backoff.attempts === 0) {\n            // keeps reconnection from firing twice for the same reconnection loop\n            this.reconnect();\n        }\n    }\n    /**\n     * Sets the current transport `socket`.\n     *\n     * @param {Function} fn - optional, callback\n     * @return self\n     * @public\n     */\n    open(fn) {\n        debug(\"readyState %s\", this._readyState);\n        if (~this._readyState.indexOf(\"open\"))\n            return this;\n        debug(\"opening %s\", this.uri);\n        this.engine = eio(this.uri, this.opts);\n        const socket = this.engine;\n        const self = this;\n        this._readyState = \"opening\";\n        this.skipReconnect = false;\n        // emit `open`\n        const openSubDestroy = on_1.on(socket, \"open\", function () {\n            self.onopen();\n            fn && fn();\n        });\n        // emit `error`\n        const errorSub = on_1.on(socket, \"error\", (err) => {\n            debug(\"error\");\n            self.cleanup();\n            self._readyState = \"closed\";\n            this.emitReserved(\"error\", err);\n            if (fn) {\n                fn(err);\n            }\n            else {\n                // Only do this if there is no fn to handle the error\n                self.maybeReconnectOnOpen();\n            }\n        });\n        if (false !== this._timeout) {\n            const timeout = this._timeout;\n            debug(\"connect attempt will timeout after %d\", timeout);\n            if (timeout === 0) {\n                openSubDestroy(); // prevents a race condition with the 'open' event\n            }\n            // set timer\n            const timer = setTimeout(() => {\n                debug(\"connect attempt timed out after %d\", timeout);\n                openSubDestroy();\n                socket.close();\n                socket.emit(\"error\", new Error(\"timeout\"));\n            }, timeout);\n            if (this.opts.autoUnref) {\n                timer.unref();\n            }\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n        this.subs.push(openSubDestroy);\n        this.subs.push(errorSub);\n        return this;\n    }\n    /**\n     * Alias for open()\n     *\n     * @return self\n     * @public\n     */\n    connect(fn) {\n        return this.open(fn);\n    }\n    /**\n     * Called upon transport open.\n     *\n     * @private\n     */\n    onopen() {\n        debug(\"open\");\n        // clear old subs\n        this.cleanup();\n        // mark as open\n        this._readyState = \"open\";\n        this.emitReserved(\"open\");\n        // add new subs\n        const socket = this.engine;\n        this.subs.push(on_1.on(socket, \"ping\", this.onping.bind(this)), on_1.on(socket, \"data\", this.ondata.bind(this)), on_1.on(socket, \"error\", this.onerror.bind(this)), on_1.on(socket, \"close\", this.onclose.bind(this)), on_1.on(this.decoder, \"decoded\", this.ondecoded.bind(this)));\n    }\n    /**\n     * Called upon a ping.\n     *\n     * @private\n     */\n    onping() {\n        this.emitReserved(\"ping\");\n    }\n    /**\n     * Called with data.\n     *\n     * @private\n     */\n    ondata(data) {\n        this.decoder.add(data);\n    }\n    /**\n     * Called when parser fully decodes a packet.\n     *\n     * @private\n     */\n    ondecoded(packet) {\n        this.emitReserved(\"packet\", packet);\n    }\n    /**\n     * Called upon socket error.\n     *\n     * @private\n     */\n    onerror(err) {\n        debug(\"error\", err);\n        this.emitReserved(\"error\", err);\n    }\n    /**\n     * Creates a new socket for the given `nsp`.\n     *\n     * @return {Socket}\n     * @public\n     */\n    socket(nsp, opts) {\n        let socket = this.nsps[nsp];\n        if (!socket) {\n            socket = new socket_1.Socket(this, nsp, opts);\n            this.nsps[nsp] = socket;\n        }\n        return socket;\n    }\n    /**\n     * Called upon a socket close.\n     *\n     * @param socket\n     * @private\n     */\n    _destroy(socket) {\n        const nsps = Object.keys(this.nsps);\n        for (const nsp of nsps) {\n            const socket = this.nsps[nsp];\n            if (socket.active) {\n                debug(\"socket %s is still active, skipping close\", nsp);\n                return;\n            }\n        }\n        this._close();\n    }\n    /**\n     * Writes a packet.\n     *\n     * @param packet\n     * @private\n     */\n    _packet(packet) {\n        debug(\"writing packet %j\", packet);\n        const encodedPackets = this.encoder.encode(packet);\n        for (let i = 0; i < encodedPackets.length; i++) {\n            this.engine.write(encodedPackets[i], packet.options);\n        }\n    }\n    /**\n     * Clean up transport subscriptions and packet buffer.\n     *\n     * @private\n     */\n    cleanup() {\n        debug(\"cleanup\");\n        this.subs.forEach((subDestroy) => subDestroy());\n        this.subs.length = 0;\n        this.decoder.destroy();\n    }\n    /**\n     * Close the current socket.\n     *\n     * @private\n     */\n    _close() {\n        debug(\"disconnect\");\n        this.skipReconnect = true;\n        this._reconnecting = false;\n        if (\"opening\" === this._readyState) {\n            // `onclose` will not fire because\n            // an open event never happened\n            this.cleanup();\n        }\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        if (this.engine)\n            this.engine.close();\n    }\n    /**\n     * Alias for close()\n     *\n     * @private\n     */\n    disconnect() {\n        return this._close();\n    }\n    /**\n     * Called upon engine close.\n     *\n     * @private\n     */\n    onclose(reason) {\n        debug(\"onclose\");\n        this.cleanup();\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        this.emitReserved(\"close\", reason);\n        if (this._reconnection && !this.skipReconnect) {\n            this.reconnect();\n        }\n    }\n    /**\n     * Attempt a reconnection.\n     *\n     * @private\n     */\n    reconnect() {\n        if (this._reconnecting || this.skipReconnect)\n            return this;\n        const self = this;\n        if (this.backoff.attempts >= this._reconnectionAttempts) {\n            debug(\"reconnect failed\");\n            this.backoff.reset();\n            this.emitReserved(\"reconnect_failed\");\n            this._reconnecting = false;\n        }\n        else {\n            const delay = this.backoff.duration();\n            debug(\"will wait %dms before reconnect attempt\", delay);\n            this._reconnecting = true;\n            const timer = setTimeout(() => {\n                if (self.skipReconnect)\n                    return;\n                debug(\"attempting reconnect\");\n                this.emitReserved(\"reconnect_attempt\", self.backoff.attempts);\n                // check again for the case socket closed in above events\n                if (self.skipReconnect)\n                    return;\n                self.open((err) => {\n                    if (err) {\n                        debug(\"reconnect attempt error\");\n                        self._reconnecting = false;\n                        self.reconnect();\n                        this.emitReserved(\"reconnect_error\", err);\n                    }\n                    else {\n                        debug(\"reconnect success\");\n                        self.onreconnect();\n                    }\n                });\n            }, delay);\n            if (this.opts.autoUnref) {\n                timer.unref();\n            }\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n    }\n    /**\n     * Called upon successful reconnect.\n     *\n     * @private\n     */\n    onreconnect() {\n        const attempt = this.backoff.attempts;\n        this._reconnecting = false;\n        this.backoff.reset();\n        this.emitReserved(\"reconnect\", attempt);\n    }\n}\nexports.Manager = Manager;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.on = void 0;\nfunction on(obj, ev, fn) {\n    obj.on(ev, fn);\n    return function subDestroy() {\n        obj.off(ev, fn);\n    };\n}\nexports.on = on;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Socket = void 0;\nconst socket_io_parser_1 = require(\"socket.io-parser\");\nconst on_1 = require(\"./on\");\nconst typed_events_1 = require(\"./typed-events\");\nconst debug = require(\"debug\")(\"socket.io-client:socket\");\n/**\n * Internal events.\n * These events can't be emitted by the user.\n */\nconst RESERVED_EVENTS = Object.freeze({\n    connect: 1,\n    connect_error: 1,\n    disconnect: 1,\n    disconnecting: 1,\n    // EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener\n    newListener: 1,\n    removeListener: 1,\n});\nclass Socket extends typed_events_1.StrictEventEmitter {\n    /**\n     * `Socket` constructor.\n     *\n     * @public\n     */\n    constructor(io, nsp, opts) {\n        super();\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.ids = 0;\n        this.acks = {};\n        this.flags = {};\n        this.io = io;\n        this.nsp = nsp;\n        this.ids = 0;\n        this.acks = {};\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.connected = false;\n        this.disconnected = true;\n        this.flags = {};\n        if (opts && opts.auth) {\n            this.auth = opts.auth;\n        }\n        if (this.io._autoConnect)\n            this.open();\n    }\n    /**\n     * Subscribe to open, close and packet events\n     *\n     * @private\n     */\n    subEvents() {\n        if (this.subs)\n            return;\n        const io = this.io;\n        this.subs = [\n            on_1.on(io, \"open\", this.onopen.bind(this)),\n            on_1.on(io, \"packet\", this.onpacket.bind(this)),\n            on_1.on(io, \"error\", this.onerror.bind(this)),\n            on_1.on(io, \"close\", this.onclose.bind(this)),\n        ];\n    }\n    /**\n     * Whether the Socket will try to reconnect when its Manager connects or reconnects\n     */\n    get active() {\n        return !!this.subs;\n    }\n    /**\n     * \"Opens\" the socket.\n     *\n     * @public\n     */\n    connect() {\n        if (this.connected)\n            return this;\n        this.subEvents();\n        if (!this.io[\"_reconnecting\"])\n            this.io.open(); // ensure open\n        if (\"open\" === this.io._readyState)\n            this.onopen();\n        return this;\n    }\n    /**\n     * Alias for connect()\n     */\n    open() {\n        return this.connect();\n    }\n    /**\n     * Sends a `message` event.\n     *\n     * @return self\n     * @public\n     */\n    send(...args) {\n        args.unshift(\"message\");\n        this.emit.apply(this, args);\n        return this;\n    }\n    /**\n     * Override `emit`.\n     * If the event is in `events`, it's emitted normally.\n     *\n     * @return self\n     * @public\n     */\n    emit(ev, ...args) {\n        if (RESERVED_EVENTS.hasOwnProperty(ev)) {\n            throw new Error('\"' + ev + '\" is a reserved event name');\n        }\n        args.unshift(ev);\n        const packet = {\n            type: socket_io_parser_1.PacketType.EVENT,\n            data: args,\n        };\n        packet.options = {};\n        packet.options.compress = this.flags.compress !== false;\n        // event ack callback\n        if (\"function\" === typeof args[args.length - 1]) {\n            debug(\"emitting packet with ack id %d\", this.ids);\n            this.acks[this.ids] = args.pop();\n            packet.id = this.ids++;\n        }\n        const isTransportWritable = this.io.engine &&\n            this.io.engine.transport &&\n            this.io.engine.transport.writable;\n        const discardPacket = this.flags.volatile && (!isTransportWritable || !this.connected);\n        if (discardPacket) {\n            debug(\"discard packet as the transport is not currently writable\");\n        }\n        else if (this.connected) {\n            this.packet(packet);\n        }\n        else {\n            this.sendBuffer.push(packet);\n        }\n        this.flags = {};\n        return this;\n    }\n    /**\n     * Sends a packet.\n     *\n     * @param packet\n     * @private\n     */\n    packet(packet) {\n        packet.nsp = this.nsp;\n        this.io._packet(packet);\n    }\n    /**\n     * Called upon engine `open`.\n     *\n     * @private\n     */\n    onopen() {\n        debug(\"transport is open - connecting\");\n        if (typeof this.auth == \"function\") {\n            this.auth((data) => {\n                this.packet({ type: socket_io_parser_1.PacketType.CONNECT, data });\n            });\n        }\n        else {\n            this.packet({ type: socket_io_parser_1.PacketType.CONNECT, data: this.auth });\n        }\n    }\n    /**\n     * Called upon engine or manager `error`.\n     *\n     * @param err\n     * @private\n     */\n    onerror(err) {\n        if (!this.connected) {\n            this.emitReserved(\"connect_error\", err);\n        }\n    }\n    /**\n     * Called upon engine `close`.\n     *\n     * @param reason\n     * @private\n     */\n    onclose(reason) {\n        debug(\"close (%s)\", reason);\n        this.connected = false;\n        this.disconnected = true;\n        delete this.id;\n        this.emitReserved(\"disconnect\", reason);\n    }\n    /**\n     * Called with socket packet.\n     *\n     * @param packet\n     * @private\n     */\n    onpacket(packet) {\n        const sameNamespace = packet.nsp === this.nsp;\n        if (!sameNamespace)\n            return;\n        switch (packet.type) {\n            case socket_io_parser_1.PacketType.CONNECT:\n                if (packet.data && packet.data.sid) {\n                    const id = packet.data.sid;\n                    this.onconnect(id);\n                }\n                else {\n                    this.emitReserved(\"connect_error\", new Error(\"It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)\"));\n                }\n                break;\n            case socket_io_parser_1.PacketType.EVENT:\n                this.onevent(packet);\n                break;\n            case socket_io_parser_1.PacketType.BINARY_EVENT:\n                this.onevent(packet);\n                break;\n            case socket_io_parser_1.PacketType.ACK:\n                this.onack(packet);\n                break;\n            case socket_io_parser_1.PacketType.BINARY_ACK:\n                this.onack(packet);\n                break;\n            case socket_io_parser_1.PacketType.DISCONNECT:\n                this.ondisconnect();\n                break;\n            case socket_io_parser_1.PacketType.CONNECT_ERROR:\n                const err = new Error(packet.data.message);\n                // @ts-ignore\n                err.data = packet.data.data;\n                this.emitReserved(\"connect_error\", err);\n                break;\n        }\n    }\n    /**\n     * Called upon a server event.\n     *\n     * @param packet\n     * @private\n     */\n    onevent(packet) {\n        const args = packet.data || [];\n        debug(\"emitting event %j\", args);\n        if (null != packet.id) {\n            debug(\"attaching ack callback to event\");\n            args.push(this.ack(packet.id));\n        }\n        if (this.connected) {\n            this.emitEvent(args);\n        }\n        else {\n            this.receiveBuffer.push(Object.freeze(args));\n        }\n    }\n    emitEvent(args) {\n        if (this._anyListeners && this._anyListeners.length) {\n            const listeners = this._anyListeners.slice();\n            for (const listener of listeners) {\n                listener.apply(this, args);\n            }\n        }\n        super.emit.apply(this, args);\n    }\n    /**\n     * Produces an ack callback to emit with an event.\n     *\n     * @private\n     */\n    ack(id) {\n        const self = this;\n        let sent = false;\n        return function (...args) {\n            // prevent double callbacks\n            if (sent)\n                return;\n            sent = true;\n            debug(\"sending ack %j\", args);\n            self.packet({\n                type: socket_io_parser_1.PacketType.ACK,\n                id: id,\n                data: args,\n            });\n        };\n    }\n    /**\n     * Called upon a server acknowlegement.\n     *\n     * @param packet\n     * @private\n     */\n    onack(packet) {\n        const ack = this.acks[packet.id];\n        if (\"function\" === typeof ack) {\n            debug(\"calling ack %s with %j\", packet.id, packet.data);\n            ack.apply(this, packet.data);\n            delete this.acks[packet.id];\n        }\n        else {\n            debug(\"bad ack %s\", packet.id);\n        }\n    }\n    /**\n     * Called upon server connect.\n     *\n     * @private\n     */\n    onconnect(id) {\n        debug(\"socket connected with id %s\", id);\n        this.id = id;\n        this.connected = true;\n        this.disconnected = false;\n        this.emitBuffered();\n        this.emitReserved(\"connect\");\n    }\n    /**\n     * Emit buffered events (received and emitted).\n     *\n     * @private\n     */\n    emitBuffered() {\n        this.receiveBuffer.forEach((args) => this.emitEvent(args));\n        this.receiveBuffer = [];\n        this.sendBuffer.forEach((packet) => this.packet(packet));\n        this.sendBuffer = [];\n    }\n    /**\n     * Called upon server disconnect.\n     *\n     * @private\n     */\n    ondisconnect() {\n        debug(\"server disconnect (%s)\", this.nsp);\n        this.destroy();\n        this.onclose(\"io server disconnect\");\n    }\n    /**\n     * Called upon forced client/server side disconnections,\n     * this method ensures the manager stops tracking us and\n     * that reconnections don't get triggered for this.\n     *\n     * @private\n     */\n    destroy() {\n        if (this.subs) {\n            // clean subscriptions to avoid reconnections\n            this.subs.forEach((subDestroy) => subDestroy());\n            this.subs = undefined;\n        }\n        this.io[\"_destroy\"](this);\n    }\n    /**\n     * Disconnects the socket manually.\n     *\n     * @return self\n     * @public\n     */\n    disconnect() {\n        if (this.connected) {\n            debug(\"performing disconnect (%s)\", this.nsp);\n            this.packet({ type: socket_io_parser_1.PacketType.DISCONNECT });\n        }\n        // remove socket from pool\n        this.destroy();\n        if (this.connected) {\n            // fire events\n            this.onclose(\"io client disconnect\");\n        }\n        return this;\n    }\n    /**\n     * Alias for disconnect()\n     *\n     * @return self\n     * @public\n     */\n    close() {\n        return this.disconnect();\n    }\n    /**\n     * Sets the compress flag.\n     *\n     * @param compress - if `true`, compresses the sending data\n     * @return self\n     * @public\n     */\n    compress(compress) {\n        this.flags.compress = compress;\n        return this;\n    }\n    /**\n     * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not\n     * ready to send messages.\n     *\n     * @returns self\n     * @public\n     */\n    get volatile() {\n        this.flags.volatile = true;\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback.\n     *\n     * @param listener\n     * @public\n     */\n    onAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.push(listener);\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback. The listener is added to the beginning of the listeners array.\n     *\n     * @param listener\n     * @public\n     */\n    prependAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.unshift(listener);\n        return this;\n    }\n    /**\n     * Removes the listener that will be fired when any event is emitted.\n     *\n     * @param listener\n     * @public\n     */\n    offAny(listener) {\n        if (!this._anyListeners) {\n            return this;\n        }\n        if (listener) {\n            const listeners = this._anyListeners;\n            for (let i = 0; i < listeners.length; i++) {\n                if (listener === listeners[i]) {\n                    listeners.splice(i, 1);\n                    return this;\n                }\n            }\n        }\n        else {\n            this._anyListeners = [];\n        }\n        return this;\n    }\n    /**\n     * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,\n     * e.g. to remove listeners.\n     *\n     * @public\n     */\n    listenersAny() {\n        return this._anyListeners || [];\n    }\n}\nexports.Socket = Socket;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.StrictEventEmitter = void 0;\nconst Emitter = require(\"component-emitter\");\n/**\n * Strictly typed version of an `EventEmitter`. A `TypedEventEmitter` takes type\n * parameters for mappings of event names to event data types, and strictly\n * types method calls to the `EventEmitter` according to these event maps.\n *\n * @typeParam ListenEvents - `EventsMap` of user-defined events that can be\n * listened to with `on` or `once`\n * @typeParam EmitEvents - `EventsMap` of user-defined events that can be\n * emitted with `emit`\n * @typeParam ReservedEvents - `EventsMap` of reserved events, that can be\n * emitted by socket.io with `emitReserved`, and can be listened to with\n * `listen`.\n */\nclass StrictEventEmitter extends Emitter {\n    /**\n     * Adds the `listener` function as an event listener for `ev`.\n     *\n     * @param ev Name of the event\n     * @param listener Callback function\n     */\n    on(ev, listener) {\n        super.on(ev, listener);\n        return this;\n    }\n    /**\n     * Adds a one-time `listener` function as an event listener for `ev`.\n     *\n     * @param ev Name of the event\n     * @param listener Callback function\n     */\n    once(ev, listener) {\n        super.once(ev, listener);\n        return this;\n    }\n    /**\n     * Emits an event.\n     *\n     * @param ev Name of the event\n     * @param args Values to send to listeners of this event\n     */\n    emit(ev, ...args) {\n        super.emit(ev, ...args);\n        return this;\n    }\n    /**\n     * Emits a reserved event.\n     *\n     * This method is `protected`, so that only a class extending\n     * `StrictEventEmitter` can emit its own reserved events.\n     *\n     * @param ev Reserved event name\n     * @param args Arguments to emit along with the event\n     */\n    emitReserved(ev, ...args) {\n        super.emit(ev, ...args);\n        return this;\n    }\n    /**\n     * Returns the listeners listening to an event.\n     *\n     * @param event Event name\n     * @returns Array of listeners subscribed to `event`\n     */\n    listeners(event) {\n        return super.listeners(event);\n    }\n}\nexports.StrictEventEmitter = StrictEventEmitter;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.url = void 0;\nconst parseuri = require(\"parseuri\");\nconst debug = require(\"debug\")(\"socket.io-client:url\");\n/**\n * URL parser.\n *\n * @param uri - url\n * @param path - the request path of the connection\n * @param loc - An object meant to mimic window.location.\n *        Defaults to window.location.\n * @public\n */\nfunction url(uri, path = \"\", loc) {\n    let obj = uri;\n    // default to window.location\n    loc = loc || (typeof location !== \"undefined\" && location);\n    if (null == uri)\n        uri = loc.protocol + \"//\" + loc.host;\n    // relative path support\n    if (typeof uri === \"string\") {\n        if (\"/\" === uri.charAt(0)) {\n            if (\"/\" === uri.charAt(1)) {\n                uri = loc.protocol + uri;\n            }\n            else {\n                uri = loc.host + uri;\n            }\n        }\n        if (!/^(https?|wss?):\\/\\//.test(uri)) {\n            debug(\"protocol-less url %s\", uri);\n            if (\"undefined\" !== typeof loc) {\n                uri = loc.protocol + \"//\" + uri;\n            }\n            else {\n                uri = \"https://\" + uri;\n            }\n        }\n        // parse\n        debug(\"parse %s\", uri);\n        obj = parseuri(uri);\n    }\n    // make sure we treat `localhost:80` and `localhost` equally\n    if (!obj.port) {\n        if (/^(http|ws)$/.test(obj.protocol)) {\n            obj.port = \"80\";\n        }\n        else if (/^(http|ws)s$/.test(obj.protocol)) {\n            obj.port = \"443\";\n        }\n    }\n    obj.path = obj.path || \"/\";\n    const ipv6 = obj.host.indexOf(\":\") !== -1;\n    const host = ipv6 ? \"[\" + obj.host + \"]\" : obj.host;\n    // define unique id\n    obj.id = obj.protocol + \"://\" + host + \":\" + obj.port + path;\n    // define href\n    obj.href =\n        obj.protocol +\n            \"://\" +\n            host +\n            (loc && loc.port === obj.port ? \"\" : \":\" + obj.port);\n    return obj;\n}\nexports.url = url;\n","\n/**\n * Expose `Backoff`.\n */\n\nmodule.exports = Backoff;\n\n/**\n * Initialize backoff timer with `opts`.\n *\n * - `min` initial timeout in milliseconds [100]\n * - `max` max timeout [10000]\n * - `jitter` [0]\n * - `factor` [2]\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction Backoff(opts) {\n  opts = opts || {};\n  this.ms = opts.min || 100;\n  this.max = opts.max || 10000;\n  this.factor = opts.factor || 2;\n  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;\n  this.attempts = 0;\n}\n\n/**\n * Return the backoff duration.\n *\n * @return {Number}\n * @api public\n */\n\nBackoff.prototype.duration = function(){\n  var ms = this.ms * Math.pow(this.factor, this.attempts++);\n  if (this.jitter) {\n    var rand =  Math.random();\n    var deviation = Math.floor(rand * this.jitter * ms);\n    ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;\n  }\n  return Math.min(ms, this.max) | 0;\n};\n\n/**\n * Reset the number of attempts.\n *\n * @api public\n */\n\nBackoff.prototype.reset = function(){\n  this.attempts = 0;\n};\n\n/**\n * Set the minimum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMin = function(min){\n  this.ms = min;\n};\n\n/**\n * Set the maximum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMax = function(max){\n  this.max = max;\n};\n\n/**\n * Set the jitter\n *\n * @api public\n */\n\nBackoff.prototype.setJitter = function(jitter){\n  this.jitter = jitter;\n};\n\n","\r\n/**\r\n * Expose `Emitter`.\r\n */\r\n\r\nif (typeof module !== 'undefined') {\r\n  module.exports = Emitter;\r\n}\r\n\r\n/**\r\n * Initialize a new `Emitter`.\r\n *\r\n * @api public\r\n */\r\n\r\nfunction Emitter(obj) {\r\n  if (obj) return mixin(obj);\r\n};\r\n\r\n/**\r\n * Mixin the emitter properties.\r\n *\r\n * @param {Object} obj\r\n * @return {Object}\r\n * @api private\r\n */\r\n\r\nfunction mixin(obj) {\r\n  for (var key in Emitter.prototype) {\r\n    obj[key] = Emitter.prototype[key];\r\n  }\r\n  return obj;\r\n}\r\n\r\n/**\r\n * Listen on the given `event` with `fn`.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.on =\r\nEmitter.prototype.addEventListener = function(event, fn){\r\n  this._callbacks = this._callbacks || {};\r\n  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])\r\n    .push(fn);\r\n  return this;\r\n};\r\n\r\n/**\r\n * Adds an `event` listener that will be invoked a single\r\n * time then automatically removed.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.once = function(event, fn){\r\n  function on() {\r\n    this.off(event, on);\r\n    fn.apply(this, arguments);\r\n  }\r\n\r\n  on.fn = fn;\r\n  this.on(event, on);\r\n  return this;\r\n};\r\n\r\n/**\r\n * Remove the given callback for `event` or all\r\n * registered callbacks.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.off =\r\nEmitter.prototype.removeListener =\r\nEmitter.prototype.removeAllListeners =\r\nEmitter.prototype.removeEventListener = function(event, fn){\r\n  this._callbacks = this._callbacks || {};\r\n\r\n  // all\r\n  if (0 == arguments.length) {\r\n    this._callbacks = {};\r\n    return this;\r\n  }\r\n\r\n  // specific event\r\n  var callbacks = this._callbacks['$' + event];\r\n  if (!callbacks) return this;\r\n\r\n  // remove all handlers\r\n  if (1 == arguments.length) {\r\n    delete this._callbacks['$' + event];\r\n    return this;\r\n  }\r\n\r\n  // remove specific handler\r\n  var cb;\r\n  for (var i = 0; i < callbacks.length; i++) {\r\n    cb = callbacks[i];\r\n    if (cb === fn || cb.fn === fn) {\r\n      callbacks.splice(i, 1);\r\n      break;\r\n    }\r\n  }\r\n\r\n  // Remove event specific arrays for event types that no\r\n  // one is subscribed for to avoid memory leak.\r\n  if (callbacks.length === 0) {\r\n    delete this._callbacks['$' + event];\r\n  }\r\n\r\n  return this;\r\n};\r\n\r\n/**\r\n * Emit `event` with the given args.\r\n *\r\n * @param {String} event\r\n * @param {Mixed} ...\r\n * @return {Emitter}\r\n */\r\n\r\nEmitter.prototype.emit = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n\r\n  var args = new Array(arguments.length - 1)\r\n    , callbacks = this._callbacks['$' + event];\r\n\r\n  for (var i = 1; i < arguments.length; i++) {\r\n    args[i - 1] = arguments[i];\r\n  }\r\n\r\n  if (callbacks) {\r\n    callbacks = callbacks.slice(0);\r\n    for (var i = 0, len = callbacks.length; i < len; ++i) {\r\n      callbacks[i].apply(this, args);\r\n    }\r\n  }\r\n\r\n  return this;\r\n};\r\n\r\n/**\r\n * Return array of callbacks for `event`.\r\n *\r\n * @param {String} event\r\n * @return {Array}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.listeners = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n  return this._callbacks['$' + event] || [];\r\n};\r\n\r\n/**\r\n * Check if this emitter has `event` handlers.\r\n *\r\n * @param {String} event\r\n * @return {Boolean}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.hasListeners = function(event){\r\n  return !! this.listeners(event).length;\r\n};\r\n","/* eslint-env browser */\n\n/**\n * This is the web browser implementation of `debug()`.\n */\n\nexports.formatArgs = formatArgs;\nexports.save = save;\nexports.load = load;\nexports.useColors = useColors;\nexports.storage = localstorage();\nexports.destroy = (() => {\n\tlet warned = false;\n\n\treturn () => {\n\t\tif (!warned) {\n\t\t\twarned = true;\n\t\t\tconsole.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');\n\t\t}\n\t};\n})();\n\n/**\n * Colors.\n */\n\nexports.colors = [\n\t'#0000CC',\n\t'#0000FF',\n\t'#0033CC',\n\t'#0033FF',\n\t'#0066CC',\n\t'#0066FF',\n\t'#0099CC',\n\t'#0099FF',\n\t'#00CC00',\n\t'#00CC33',\n\t'#00CC66',\n\t'#00CC99',\n\t'#00CCCC',\n\t'#00CCFF',\n\t'#3300CC',\n\t'#3300FF',\n\t'#3333CC',\n\t'#3333FF',\n\t'#3366CC',\n\t'#3366FF',\n\t'#3399CC',\n\t'#3399FF',\n\t'#33CC00',\n\t'#33CC33',\n\t'#33CC66',\n\t'#33CC99',\n\t'#33CCCC',\n\t'#33CCFF',\n\t'#6600CC',\n\t'#6600FF',\n\t'#6633CC',\n\t'#6633FF',\n\t'#66CC00',\n\t'#66CC33',\n\t'#9900CC',\n\t'#9900FF',\n\t'#9933CC',\n\t'#9933FF',\n\t'#99CC00',\n\t'#99CC33',\n\t'#CC0000',\n\t'#CC0033',\n\t'#CC0066',\n\t'#CC0099',\n\t'#CC00CC',\n\t'#CC00FF',\n\t'#CC3300',\n\t'#CC3333',\n\t'#CC3366',\n\t'#CC3399',\n\t'#CC33CC',\n\t'#CC33FF',\n\t'#CC6600',\n\t'#CC6633',\n\t'#CC9900',\n\t'#CC9933',\n\t'#CCCC00',\n\t'#CCCC33',\n\t'#FF0000',\n\t'#FF0033',\n\t'#FF0066',\n\t'#FF0099',\n\t'#FF00CC',\n\t'#FF00FF',\n\t'#FF3300',\n\t'#FF3333',\n\t'#FF3366',\n\t'#FF3399',\n\t'#FF33CC',\n\t'#FF33FF',\n\t'#FF6600',\n\t'#FF6633',\n\t'#FF9900',\n\t'#FF9933',\n\t'#FFCC00',\n\t'#FFCC33'\n];\n\n/**\n * Currently only WebKit-based Web Inspectors, Firefox >= v31,\n * and the Firebug extension (any Firefox version) are known\n * to support \"%c\" CSS customizations.\n *\n * TODO: add a `localStorage` variable to explicitly enable/disable colors\n */\n\n// eslint-disable-next-line complexity\nfunction useColors() {\n\t// NB: In an Electron preload script, document will be defined but not fully\n\t// initialized. Since we know we're in Chrome, we'll just detect this case\n\t// explicitly\n\tif (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {\n\t\treturn true;\n\t}\n\n\t// Internet Explorer and Edge do not support colors.\n\tif (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\\/(\\d+)/)) {\n\t\treturn false;\n\t}\n\n\t// Is webkit? http://stackoverflow.com/a/16459606/376773\n\t// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632\n\treturn (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) ||\n\t\t// Is firebug? http://stackoverflow.com/a/398120/376773\n\t\t(typeof window !== 'undefined' && window.console && (window.console.firebug || (window.console.exception && window.console.table))) ||\n\t\t// Is firefox >= v31?\n\t\t// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages\n\t\t(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\\/(\\d+)/) && parseInt(RegExp.$1, 10) >= 31) ||\n\t\t// Double check webkit in userAgent just in case we are in a worker\n\t\t(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\\/(\\d+)/));\n}\n\n/**\n * Colorize log arguments if enabled.\n *\n * @api public\n */\n\nfunction formatArgs(args) {\n\targs[0] = (this.useColors ? '%c' : '') +\n\t\tthis.namespace +\n\t\t(this.useColors ? ' %c' : ' ') +\n\t\targs[0] +\n\t\t(this.useColors ? '%c ' : ' ') +\n\t\t'+' + module.exports.humanize(this.diff);\n\n\tif (!this.useColors) {\n\t\treturn;\n\t}\n\n\tconst c = 'color: ' + this.color;\n\targs.splice(1, 0, c, 'color: inherit');\n\n\t// The final \"%c\" is somewhat tricky, because there could be other\n\t// arguments passed either before or after the %c, so we need to\n\t// figure out the correct index to insert the CSS into\n\tlet index = 0;\n\tlet lastC = 0;\n\targs[0].replace(/%[a-zA-Z%]/g, match => {\n\t\tif (match === '%%') {\n\t\t\treturn;\n\t\t}\n\t\tindex++;\n\t\tif (match === '%c') {\n\t\t\t// We only are interested in the *last* %c\n\t\t\t// (the user may have provided their own)\n\t\t\tlastC = index;\n\t\t}\n\t});\n\n\targs.splice(lastC, 0, c);\n}\n\n/**\n * Invokes `console.debug()` when available.\n * No-op when `console.debug` is not a \"function\".\n * If `console.debug` is not available, falls back\n * to `console.log`.\n *\n * @api public\n */\nexports.log = console.debug || console.log || (() => {});\n\n/**\n * Save `namespaces`.\n *\n * @param {String} namespaces\n * @api private\n */\nfunction save(namespaces) {\n\ttry {\n\t\tif (namespaces) {\n\t\t\texports.storage.setItem('debug', namespaces);\n\t\t} else {\n\t\t\texports.storage.removeItem('debug');\n\t\t}\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n}\n\n/**\n * Load `namespaces`.\n *\n * @return {String} returns the previously persisted debug modes\n * @api private\n */\nfunction load() {\n\tlet r;\n\ttry {\n\t\tr = exports.storage.getItem('debug');\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n\n\t// If debug isn't set in LS, and we're in Electron, try to load $DEBUG\n\tif (!r && typeof process !== 'undefined' && 'env' in process) {\n\t\tr = process.env.DEBUG;\n\t}\n\n\treturn r;\n}\n\n/**\n * Localstorage attempts to return the localstorage.\n *\n * This is necessary because safari throws\n * when a user disables cookies/localstorage\n * and you attempt to access it.\n *\n * @return {LocalStorage}\n * @api private\n */\n\nfunction localstorage() {\n\ttry {\n\t\t// TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context\n\t\t// The Browser also has localStorage in the global context.\n\t\treturn localStorage;\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n}\n\nmodule.exports = require('./common')(exports);\n\nconst {formatters} = module.exports;\n\n/**\n * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.\n */\n\nformatters.j = function (v) {\n\ttry {\n\t\treturn JSON.stringify(v);\n\t} catch (error) {\n\t\treturn '[UnexpectedJSONParseError]: ' + error.message;\n\t}\n};\n","\n/**\n * This is the common logic for both the Node.js and web browser\n * implementations of `debug()`.\n */\n\nfunction setup(env) {\n\tcreateDebug.debug = createDebug;\n\tcreateDebug.default = createDebug;\n\tcreateDebug.coerce = coerce;\n\tcreateDebug.disable = disable;\n\tcreateDebug.enable = enable;\n\tcreateDebug.enabled = enabled;\n\tcreateDebug.humanize = require('ms');\n\tcreateDebug.destroy = destroy;\n\n\tObject.keys(env).forEach(key => {\n\t\tcreateDebug[key] = env[key];\n\t});\n\n\t/**\n\t* The currently active debug mode names, and names to skip.\n\t*/\n\n\tcreateDebug.names = [];\n\tcreateDebug.skips = [];\n\n\t/**\n\t* Map of special \"%n\" handling functions, for the debug \"format\" argument.\n\t*\n\t* Valid key names are a single, lower or upper-case letter, i.e. \"n\" and \"N\".\n\t*/\n\tcreateDebug.formatters = {};\n\n\t/**\n\t* Selects a color for a debug namespace\n\t* @param {String} namespace The namespace string for the for the debug instance to be colored\n\t* @return {Number|String} An ANSI color code for the given namespace\n\t* @api private\n\t*/\n\tfunction selectColor(namespace) {\n\t\tlet hash = 0;\n\n\t\tfor (let i = 0; i < namespace.length; i++) {\n\t\t\thash = ((hash << 5) - hash) + namespace.charCodeAt(i);\n\t\t\thash |= 0; // Convert to 32bit integer\n\t\t}\n\n\t\treturn createDebug.colors[Math.abs(hash) % createDebug.colors.length];\n\t}\n\tcreateDebug.selectColor = selectColor;\n\n\t/**\n\t* Create a debugger with the given `namespace`.\n\t*\n\t* @param {String} namespace\n\t* @return {Function}\n\t* @api public\n\t*/\n\tfunction createDebug(namespace) {\n\t\tlet prevTime;\n\t\tlet enableOverride = null;\n\n\t\tfunction debug(...args) {\n\t\t\t// Disabled?\n\t\t\tif (!debug.enabled) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst self = debug;\n\n\t\t\t// Set `diff` timestamp\n\t\t\tconst curr = Number(new Date());\n\t\t\tconst ms = curr - (prevTime || curr);\n\t\t\tself.diff = ms;\n\t\t\tself.prev = prevTime;\n\t\t\tself.curr = curr;\n\t\t\tprevTime = curr;\n\n\t\t\targs[0] = createDebug.coerce(args[0]);\n\n\t\t\tif (typeof args[0] !== 'string') {\n\t\t\t\t// Anything else let's inspect with %O\n\t\t\t\targs.unshift('%O');\n\t\t\t}\n\n\t\t\t// Apply any `formatters` transformations\n\t\t\tlet index = 0;\n\t\t\targs[0] = args[0].replace(/%([a-zA-Z%])/g, (match, format) => {\n\t\t\t\t// If we encounter an escaped % then don't increase the array index\n\t\t\t\tif (match === '%%') {\n\t\t\t\t\treturn '%';\n\t\t\t\t}\n\t\t\t\tindex++;\n\t\t\t\tconst formatter = createDebug.formatters[format];\n\t\t\t\tif (typeof formatter === 'function') {\n\t\t\t\t\tconst val = args[index];\n\t\t\t\t\tmatch = formatter.call(self, val);\n\n\t\t\t\t\t// Now we need to remove `args[index]` since it's inlined in the `format`\n\t\t\t\t\targs.splice(index, 1);\n\t\t\t\t\tindex--;\n\t\t\t\t}\n\t\t\t\treturn match;\n\t\t\t});\n\n\t\t\t// Apply env-specific formatting (colors, etc.)\n\t\t\tcreateDebug.formatArgs.call(self, args);\n\n\t\t\tconst logFn = self.log || createDebug.log;\n\t\t\tlogFn.apply(self, args);\n\t\t}\n\n\t\tdebug.namespace = namespace;\n\t\tdebug.useColors = createDebug.useColors();\n\t\tdebug.color = createDebug.selectColor(namespace);\n\t\tdebug.extend = extend;\n\t\tdebug.destroy = createDebug.destroy; // XXX Temporary. Will be removed in the next major release.\n\n\t\tObject.defineProperty(debug, 'enabled', {\n\t\t\tenumerable: true,\n\t\t\tconfigurable: false,\n\t\t\tget: () => enableOverride === null ? createDebug.enabled(namespace) : enableOverride,\n\t\t\tset: v => {\n\t\t\t\tenableOverride = v;\n\t\t\t}\n\t\t});\n\n\t\t// Env-specific initialization logic for debug instances\n\t\tif (typeof createDebug.init === 'function') {\n\t\t\tcreateDebug.init(debug);\n\t\t}\n\n\t\treturn debug;\n\t}\n\n\tfunction extend(namespace, delimiter) {\n\t\tconst newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);\n\t\tnewDebug.log = this.log;\n\t\treturn newDebug;\n\t}\n\n\t/**\n\t* Enables a debug mode by namespaces. This can include modes\n\t* separated by a colon and wildcards.\n\t*\n\t* @param {String} namespaces\n\t* @api public\n\t*/\n\tfunction enable(namespaces) {\n\t\tcreateDebug.save(namespaces);\n\n\t\tcreateDebug.names = [];\n\t\tcreateDebug.skips = [];\n\n\t\tlet i;\n\t\tconst split = (typeof namespaces === 'string' ? namespaces : '').split(/[\\s,]+/);\n\t\tconst len = split.length;\n\n\t\tfor (i = 0; i < len; i++) {\n\t\t\tif (!split[i]) {\n\t\t\t\t// ignore empty strings\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tnamespaces = split[i].replace(/\\*/g, '.*?');\n\n\t\t\tif (namespaces[0] === '-') {\n\t\t\t\tcreateDebug.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));\n\t\t\t} else {\n\t\t\t\tcreateDebug.names.push(new RegExp('^' + namespaces + '$'));\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t* Disable debug output.\n\t*\n\t* @return {String} namespaces\n\t* @api public\n\t*/\n\tfunction disable() {\n\t\tconst namespaces = [\n\t\t\t...createDebug.names.map(toNamespace),\n\t\t\t...createDebug.skips.map(toNamespace).map(namespace => '-' + namespace)\n\t\t].join(',');\n\t\tcreateDebug.enable('');\n\t\treturn namespaces;\n\t}\n\n\t/**\n\t* Returns true if the given mode name is enabled, false otherwise.\n\t*\n\t* @param {String} name\n\t* @return {Boolean}\n\t* @api public\n\t*/\n\tfunction enabled(name) {\n\t\tif (name[name.length - 1] === '*') {\n\t\t\treturn true;\n\t\t}\n\n\t\tlet i;\n\t\tlet len;\n\n\t\tfor (i = 0, len = createDebug.skips.length; i < len; i++) {\n\t\t\tif (createDebug.skips[i].test(name)) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\tfor (i = 0, len = createDebug.names.length; i < len; i++) {\n\t\t\tif (createDebug.names[i].test(name)) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t* Convert regexp to namespace\n\t*\n\t* @param {RegExp} regxep\n\t* @return {String} namespace\n\t* @api private\n\t*/\n\tfunction toNamespace(regexp) {\n\t\treturn regexp.toString()\n\t\t\t.substring(2, regexp.toString().length - 2)\n\t\t\t.replace(/\\.\\*\\?$/, '*');\n\t}\n\n\t/**\n\t* Coerce `val`.\n\t*\n\t* @param {Mixed} val\n\t* @return {Mixed}\n\t* @api private\n\t*/\n\tfunction coerce(val) {\n\t\tif (val instanceof Error) {\n\t\t\treturn val.stack || val.message;\n\t\t}\n\t\treturn val;\n\t}\n\n\t/**\n\t* XXX DO NOT USE. This is a temporary stub function.\n\t* XXX It WILL be removed in the next major release.\n\t*/\n\tfunction destroy() {\n\t\tconsole.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');\n\t}\n\n\tcreateDebug.enable(createDebug.load());\n\n\treturn createDebug;\n}\n\nmodule.exports = setup;\n","module.exports = (() => {\n  if (typeof self !== \"undefined\") {\n    return self;\n  } else if (typeof window !== \"undefined\") {\n    return window;\n  } else {\n    return Function(\"return this\")();\n  }\n})();\n","const Socket = require(\"./socket\");\n\nmodule.exports = (uri, opts) => new Socket(uri, opts);\n\n/**\n * Expose deps for legacy compatibility\n * and standalone browser access.\n */\n\nmodule.exports.Socket = Socket;\nmodule.exports.protocol = Socket.protocol; // this is an int\nmodule.exports.Transport = require(\"./transport\");\nmodule.exports.transports = require(\"./transports/index\");\nmodule.exports.parser = require(\"engine.io-parser\");\n","const transports = require(\"./transports/index\");\nconst Emitter = require(\"component-emitter\");\nconst debug = require(\"debug\")(\"engine.io-client:socket\");\nconst parser = require(\"engine.io-parser\");\nconst parseuri = require(\"parseuri\");\nconst parseqs = require(\"parseqs\");\n\nclass Socket extends Emitter {\n  /**\n   * Socket constructor.\n   *\n   * @param {String|Object} uri or options\n   * @param {Object} options\n   * @api public\n   */\n  constructor(uri, opts = {}) {\n    super();\n\n    if (uri && \"object\" === typeof uri) {\n      opts = uri;\n      uri = null;\n    }\n\n    if (uri) {\n      uri = parseuri(uri);\n      opts.hostname = uri.host;\n      opts.secure = uri.protocol === \"https\" || uri.protocol === \"wss\";\n      opts.port = uri.port;\n      if (uri.query) opts.query = uri.query;\n    } else if (opts.host) {\n      opts.hostname = parseuri(opts.host).host;\n    }\n\n    this.secure =\n      null != opts.secure\n        ? opts.secure\n        : typeof location !== \"undefined\" && \"https:\" === location.protocol;\n\n    if (opts.hostname && !opts.port) {\n      // if no port is specified manually, use the protocol default\n      opts.port = this.secure ? \"443\" : \"80\";\n    }\n\n    this.hostname =\n      opts.hostname ||\n      (typeof location !== \"undefined\" ? location.hostname : \"localhost\");\n    this.port =\n      opts.port ||\n      (typeof location !== \"undefined\" && location.port\n        ? location.port\n        : this.secure\n        ? 443\n        : 80);\n\n    this.transports = opts.transports || [\"polling\", \"websocket\"];\n    this.readyState = \"\";\n    this.writeBuffer = [];\n    this.prevBufferLen = 0;\n\n    this.opts = Object.assign(\n      {\n        path: \"/engine.io\",\n        agent: false,\n        withCredentials: false,\n        upgrade: true,\n        jsonp: true,\n        timestampParam: \"t\",\n        rememberUpgrade: false,\n        rejectUnauthorized: true,\n        perMessageDeflate: {\n          threshold: 1024\n        },\n        transportOptions: {},\n        closeOnBeforeunload: true\n      },\n      opts\n    );\n\n    this.opts.path = this.opts.path.replace(/\\/$/, \"\") + \"/\";\n\n    if (typeof this.opts.query === \"string\") {\n      this.opts.query = parseqs.decode(this.opts.query);\n    }\n\n    // set on handshake\n    this.id = null;\n    this.upgrades = null;\n    this.pingInterval = null;\n    this.pingTimeout = null;\n\n    // set on heartbeat\n    this.pingTimeoutTimer = null;\n\n    if (typeof addEventListener === \"function\") {\n      if (this.opts.closeOnBeforeunload) {\n        // Firefox closes the connection when the \"beforeunload\" event is emitted but not Chrome. This event listener\n        // ensures every browser behaves the same (no \"disconnect\" event at the Socket.IO level when the page is\n        // closed/reloaded)\n        addEventListener(\n          \"beforeunload\",\n          () => {\n            if (this.transport) {\n              // silently close the transport\n              this.transport.removeAllListeners();\n              this.transport.close();\n            }\n          },\n          false\n        );\n      }\n      if (this.hostname !== \"localhost\") {\n        this.offlineEventListener = () => {\n          this.onClose(\"transport close\");\n        };\n        addEventListener(\"offline\", this.offlineEventListener, false);\n      }\n    }\n\n    this.open();\n  }\n\n  /**\n   * Creates transport of the given type.\n   *\n   * @param {String} transport name\n   * @return {Transport}\n   * @api private\n   */\n  createTransport(name) {\n    debug('creating transport \"%s\"', name);\n    const query = clone(this.opts.query);\n\n    // append engine.io protocol identifier\n    query.EIO = parser.protocol;\n\n    // transport name\n    query.transport = name;\n\n    // session id if we already have one\n    if (this.id) query.sid = this.id;\n\n    const opts = Object.assign(\n      {},\n      this.opts.transportOptions[name],\n      this.opts,\n      {\n        query,\n        socket: this,\n        hostname: this.hostname,\n        secure: this.secure,\n        port: this.port\n      }\n    );\n\n    debug(\"options: %j\", opts);\n\n    return new transports[name](opts);\n  }\n\n  /**\n   * Initializes transport to use and starts probe.\n   *\n   * @api private\n   */\n  open() {\n    let transport;\n    if (\n      this.opts.rememberUpgrade &&\n      Socket.priorWebsocketSuccess &&\n      this.transports.indexOf(\"websocket\") !== -1\n    ) {\n      transport = \"websocket\";\n    } else if (0 === this.transports.length) {\n      // Emit error on next tick so it can be listened to\n      setTimeout(() => {\n        this.emit(\"error\", \"No transports available\");\n      }, 0);\n      return;\n    } else {\n      transport = this.transports[0];\n    }\n    this.readyState = \"opening\";\n\n    // Retry with the next transport if the transport is disabled (jsonp: false)\n    try {\n      transport = this.createTransport(transport);\n    } catch (e) {\n      debug(\"error while creating transport: %s\", e);\n      this.transports.shift();\n      this.open();\n      return;\n    }\n\n    transport.open();\n    this.setTransport(transport);\n  }\n\n  /**\n   * Sets the current transport. Disables the existing one (if any).\n   *\n   * @api private\n   */\n  setTransport(transport) {\n    debug(\"setting transport %s\", transport.name);\n\n    if (this.transport) {\n      debug(\"clearing existing transport %s\", this.transport.name);\n      this.transport.removeAllListeners();\n    }\n\n    // set up transport\n    this.transport = transport;\n\n    // set up transport listeners\n    transport\n      .on(\"drain\", this.onDrain.bind(this))\n      .on(\"packet\", this.onPacket.bind(this))\n      .on(\"error\", this.onError.bind(this))\n      .on(\"close\", () => {\n        this.onClose(\"transport close\");\n      });\n  }\n\n  /**\n   * Probes a transport.\n   *\n   * @param {String} transport name\n   * @api private\n   */\n  probe(name) {\n    debug('probing transport \"%s\"', name);\n    let transport = this.createTransport(name, { probe: 1 });\n    let failed = false;\n\n    Socket.priorWebsocketSuccess = false;\n\n    const onTransportOpen = () => {\n      if (failed) return;\n\n      debug('probe transport \"%s\" opened', name);\n      transport.send([{ type: \"ping\", data: \"probe\" }]);\n      transport.once(\"packet\", msg => {\n        if (failed) return;\n        if (\"pong\" === msg.type && \"probe\" === msg.data) {\n          debug('probe transport \"%s\" pong', name);\n          this.upgrading = true;\n          this.emit(\"upgrading\", transport);\n          if (!transport) return;\n          Socket.priorWebsocketSuccess = \"websocket\" === transport.name;\n\n          debug('pausing current transport \"%s\"', this.transport.name);\n          this.transport.pause(() => {\n            if (failed) return;\n            if (\"closed\" === this.readyState) return;\n            debug(\"changing transport and sending upgrade packet\");\n\n            cleanup();\n\n            this.setTransport(transport);\n            transport.send([{ type: \"upgrade\" }]);\n            this.emit(\"upgrade\", transport);\n            transport = null;\n            this.upgrading = false;\n            this.flush();\n          });\n        } else {\n          debug('probe transport \"%s\" failed', name);\n          const err = new Error(\"probe error\");\n          err.transport = transport.name;\n          this.emit(\"upgradeError\", err);\n        }\n      });\n    };\n\n    function freezeTransport() {\n      if (failed) return;\n\n      // Any callback called by transport should be ignored since now\n      failed = true;\n\n      cleanup();\n\n      transport.close();\n      transport = null;\n    }\n\n    // Handle any error that happens while probing\n    const onerror = err => {\n      const error = new Error(\"probe error: \" + err);\n      error.transport = transport.name;\n\n      freezeTransport();\n\n      debug('probe transport \"%s\" failed because of error: %s', name, err);\n\n      this.emit(\"upgradeError\", error);\n    };\n\n    function onTransportClose() {\n      onerror(\"transport closed\");\n    }\n\n    // When the socket is closed while we're probing\n    function onclose() {\n      onerror(\"socket closed\");\n    }\n\n    // When the socket is upgraded while we're probing\n    function onupgrade(to) {\n      if (transport && to.name !== transport.name) {\n        debug('\"%s\" works - aborting \"%s\"', to.name, transport.name);\n        freezeTransport();\n      }\n    }\n\n    // Remove all listeners on the transport and on self\n    const cleanup = () => {\n      transport.removeListener(\"open\", onTransportOpen);\n      transport.removeListener(\"error\", onerror);\n      transport.removeListener(\"close\", onTransportClose);\n      this.removeListener(\"close\", onclose);\n      this.removeListener(\"upgrading\", onupgrade);\n    };\n\n    transport.once(\"open\", onTransportOpen);\n    transport.once(\"error\", onerror);\n    transport.once(\"close\", onTransportClose);\n\n    this.once(\"close\", onclose);\n    this.once(\"upgrading\", onupgrade);\n\n    transport.open();\n  }\n\n  /**\n   * Called when connection is deemed open.\n   *\n   * @api public\n   */\n  onOpen() {\n    debug(\"socket open\");\n    this.readyState = \"open\";\n    Socket.priorWebsocketSuccess = \"websocket\" === this.transport.name;\n    this.emit(\"open\");\n    this.flush();\n\n    // we check for `readyState` in case an `open`\n    // listener already closed the socket\n    if (\n      \"open\" === this.readyState &&\n      this.opts.upgrade &&\n      this.transport.pause\n    ) {\n      debug(\"starting upgrade probes\");\n      let i = 0;\n      const l = this.upgrades.length;\n      for (; i < l; i++) {\n        this.probe(this.upgrades[i]);\n      }\n    }\n  }\n\n  /**\n   * Handles a packet.\n   *\n   * @api private\n   */\n  onPacket(packet) {\n    if (\n      \"opening\" === this.readyState ||\n      \"open\" === this.readyState ||\n      \"closing\" === this.readyState\n    ) {\n      debug('socket receive: type \"%s\", data \"%s\"', packet.type, packet.data);\n\n      this.emit(\"packet\", packet);\n\n      // Socket is live - any packet counts\n      this.emit(\"heartbeat\");\n\n      switch (packet.type) {\n        case \"open\":\n          this.onHandshake(JSON.parse(packet.data));\n          break;\n\n        case \"ping\":\n          this.resetPingTimeout();\n          this.sendPacket(\"pong\");\n          this.emit(\"ping\");\n          this.emit(\"pong\");\n          break;\n\n        case \"error\":\n          const err = new Error(\"server error\");\n          err.code = packet.data;\n          this.onError(err);\n          break;\n\n        case \"message\":\n          this.emit(\"data\", packet.data);\n          this.emit(\"message\", packet.data);\n          break;\n      }\n    } else {\n      debug('packet received with socket readyState \"%s\"', this.readyState);\n    }\n  }\n\n  /**\n   * Called upon handshake completion.\n   *\n   * @param {Object} handshake obj\n   * @api private\n   */\n  onHandshake(data) {\n    this.emit(\"handshake\", data);\n    this.id = data.sid;\n    this.transport.query.sid = data.sid;\n    this.upgrades = this.filterUpgrades(data.upgrades);\n    this.pingInterval = data.pingInterval;\n    this.pingTimeout = data.pingTimeout;\n    this.onOpen();\n    // In case open handler closes socket\n    if (\"closed\" === this.readyState) return;\n    this.resetPingTimeout();\n  }\n\n  /**\n   * Sets and resets ping timeout timer based on server pings.\n   *\n   * @api private\n   */\n  resetPingTimeout() {\n    clearTimeout(this.pingTimeoutTimer);\n    this.pingTimeoutTimer = setTimeout(() => {\n      this.onClose(\"ping timeout\");\n    }, this.pingInterval + this.pingTimeout);\n    if (this.opts.autoUnref) {\n      this.pingTimeoutTimer.unref();\n    }\n  }\n\n  /**\n   * Called on `drain` event\n   *\n   * @api private\n   */\n  onDrain() {\n    this.writeBuffer.splice(0, this.prevBufferLen);\n\n    // setting prevBufferLen = 0 is very important\n    // for example, when upgrading, upgrade packet is sent over,\n    // and a nonzero prevBufferLen could cause problems on `drain`\n    this.prevBufferLen = 0;\n\n    if (0 === this.writeBuffer.length) {\n      this.emit(\"drain\");\n    } else {\n      this.flush();\n    }\n  }\n\n  /**\n   * Flush write buffers.\n   *\n   * @api private\n   */\n  flush() {\n    if (\n      \"closed\" !== this.readyState &&\n      this.transport.writable &&\n      !this.upgrading &&\n      this.writeBuffer.length\n    ) {\n      debug(\"flushing %d packets in socket\", this.writeBuffer.length);\n      this.transport.send(this.writeBuffer);\n      // keep track of current length of writeBuffer\n      // splice writeBuffer and callbackBuffer on `drain`\n      this.prevBufferLen = this.writeBuffer.length;\n      this.emit(\"flush\");\n    }\n  }\n\n  /**\n   * Sends a message.\n   *\n   * @param {String} message.\n   * @param {Function} callback function.\n   * @param {Object} options.\n   * @return {Socket} for chaining.\n   * @api public\n   */\n  write(msg, options, fn) {\n    this.sendPacket(\"message\", msg, options, fn);\n    return this;\n  }\n\n  send(msg, options, fn) {\n    this.sendPacket(\"message\", msg, options, fn);\n    return this;\n  }\n\n  /**\n   * Sends a packet.\n   *\n   * @param {String} packet type.\n   * @param {String} data.\n   * @param {Object} options.\n   * @param {Function} callback function.\n   * @api private\n   */\n  sendPacket(type, data, options, fn) {\n    if (\"function\" === typeof data) {\n      fn = data;\n      data = undefined;\n    }\n\n    if (\"function\" === typeof options) {\n      fn = options;\n      options = null;\n    }\n\n    if (\"closing\" === this.readyState || \"closed\" === this.readyState) {\n      return;\n    }\n\n    options = options || {};\n    options.compress = false !== options.compress;\n\n    const packet = {\n      type: type,\n      data: data,\n      options: options\n    };\n    this.emit(\"packetCreate\", packet);\n    this.writeBuffer.push(packet);\n    if (fn) this.once(\"flush\", fn);\n    this.flush();\n  }\n\n  /**\n   * Closes the connection.\n   *\n   * @api private\n   */\n  close() {\n    const close = () => {\n      this.onClose(\"forced close\");\n      debug(\"socket closing - telling transport to close\");\n      this.transport.close();\n    };\n\n    const cleanupAndClose = () => {\n      this.removeListener(\"upgrade\", cleanupAndClose);\n      this.removeListener(\"upgradeError\", cleanupAndClose);\n      close();\n    };\n\n    const waitForUpgrade = () => {\n      // wait for upgrade to finish since we can't send packets while pausing a transport\n      this.once(\"upgrade\", cleanupAndClose);\n      this.once(\"upgradeError\", cleanupAndClose);\n    };\n\n    if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n      this.readyState = \"closing\";\n\n      if (this.writeBuffer.length) {\n        this.once(\"drain\", () => {\n          if (this.upgrading) {\n            waitForUpgrade();\n          } else {\n            close();\n          }\n        });\n      } else if (this.upgrading) {\n        waitForUpgrade();\n      } else {\n        close();\n      }\n    }\n\n    return this;\n  }\n\n  /**\n   * Called upon transport error\n   *\n   * @api private\n   */\n  onError(err) {\n    debug(\"socket error %j\", err);\n    Socket.priorWebsocketSuccess = false;\n    this.emit(\"error\", err);\n    this.onClose(\"transport error\", err);\n  }\n\n  /**\n   * Called upon transport close.\n   *\n   * @api private\n   */\n  onClose(reason, desc) {\n    if (\n      \"opening\" === this.readyState ||\n      \"open\" === this.readyState ||\n      \"closing\" === this.readyState\n    ) {\n      debug('socket close with reason: \"%s\"', reason);\n\n      // clear timers\n      clearTimeout(this.pingIntervalTimer);\n      clearTimeout(this.pingTimeoutTimer);\n\n      // stop event from firing again for transport\n      this.transport.removeAllListeners(\"close\");\n\n      // ensure transport won't stay open\n      this.transport.close();\n\n      // ignore further transport communication\n      this.transport.removeAllListeners();\n\n      if (typeof removeEventListener === \"function\") {\n        removeEventListener(\"offline\", this.offlineEventListener, false);\n      }\n\n      // set ready state\n      this.readyState = \"closed\";\n\n      // clear session id\n      this.id = null;\n\n      // emit close event\n      this.emit(\"close\", reason, desc);\n\n      // clean buffers after, so users can still\n      // grab the buffers on `close` event\n      this.writeBuffer = [];\n      this.prevBufferLen = 0;\n    }\n  }\n\n  /**\n   * Filters upgrades, returning only those matching client transports.\n   *\n   * @param {Array} server upgrades\n   * @api private\n   *\n   */\n  filterUpgrades(upgrades) {\n    const filteredUpgrades = [];\n    let i = 0;\n    const j = upgrades.length;\n    for (; i < j; i++) {\n      if (~this.transports.indexOf(upgrades[i]))\n        filteredUpgrades.push(upgrades[i]);\n    }\n    return filteredUpgrades;\n  }\n}\n\nSocket.priorWebsocketSuccess = false;\n\n/**\n * Protocol version.\n *\n * @api public\n */\n\nSocket.protocol = parser.protocol; // this is an int\n\nfunction clone(obj) {\n  const o = {};\n  for (let i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      o[i] = obj[i];\n    }\n  }\n  return o;\n}\n\nmodule.exports = Socket;\n","const parser = require(\"engine.io-parser\");\nconst Emitter = require(\"component-emitter\");\nconst debug = require(\"debug\")(\"engine.io-client:transport\");\n\nclass Transport extends Emitter {\n  /**\n   * Transport abstract constructor.\n   *\n   * @param {Object} options.\n   * @api private\n   */\n  constructor(opts) {\n    super();\n\n    this.opts = opts;\n    this.query = opts.query;\n    this.readyState = \"\";\n    this.socket = opts.socket;\n  }\n\n  /**\n   * Emits an error.\n   *\n   * @param {String} str\n   * @return {Transport} for chaining\n   * @api public\n   */\n  onError(msg, desc) {\n    const err = new Error(msg);\n    err.type = \"TransportError\";\n    err.description = desc;\n    this.emit(\"error\", err);\n    return this;\n  }\n\n  /**\n   * Opens the transport.\n   *\n   * @api public\n   */\n  open() {\n    if (\"closed\" === this.readyState || \"\" === this.readyState) {\n      this.readyState = \"opening\";\n      this.doOpen();\n    }\n\n    return this;\n  }\n\n  /**\n   * Closes the transport.\n   *\n   * @api private\n   */\n  close() {\n    if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n      this.doClose();\n      this.onClose();\n    }\n\n    return this;\n  }\n\n  /**\n   * Sends multiple packets.\n   *\n   * @param {Array} packets\n   * @api private\n   */\n  send(packets) {\n    if (\"open\" === this.readyState) {\n      this.write(packets);\n    } else {\n      // this might happen if the transport was silently closed in the beforeunload event handler\n      debug(\"transport is not open, discarding packets\");\n    }\n  }\n\n  /**\n   * Called upon open\n   *\n   * @api private\n   */\n  onOpen() {\n    this.readyState = \"open\";\n    this.writable = true;\n    this.emit(\"open\");\n  }\n\n  /**\n   * Called with data.\n   *\n   * @param {String} data\n   * @api private\n   */\n  onData(data) {\n    const packet = parser.decodePacket(data, this.socket.binaryType);\n    this.onPacket(packet);\n  }\n\n  /**\n   * Called with a decoded packet.\n   */\n  onPacket(packet) {\n    this.emit(\"packet\", packet);\n  }\n\n  /**\n   * Called upon close.\n   *\n   * @api private\n   */\n  onClose() {\n    this.readyState = \"closed\";\n    this.emit(\"close\");\n  }\n}\n\nmodule.exports = Transport;\n","const XMLHttpRequest = require(\"../../contrib/xmlhttprequest-ssl/XMLHttpRequest\");\nconst XHR = require(\"./polling-xhr\");\nconst JSONP = require(\"./polling-jsonp\");\nconst websocket = require(\"./websocket\");\n\nexports.polling = polling;\nexports.websocket = websocket;\n\n/**\n * Polling transport polymorphic constructor.\n * Decides on xhr vs jsonp based on feature detection.\n *\n * @api private\n */\n\nfunction polling(opts) {\n  let xhr;\n  let xd = false;\n  let xs = false;\n  const jsonp = false !== opts.jsonp;\n\n  if (typeof location !== \"undefined\") {\n    const isSSL = \"https:\" === location.protocol;\n    let port = location.port;\n\n    // some user agents have empty `location.port`\n    if (!port) {\n      port = isSSL ? 443 : 80;\n    }\n\n    xd = opts.hostname !== location.hostname || port !== opts.port;\n    xs = opts.secure !== isSSL;\n  }\n\n  opts.xdomain = xd;\n  opts.xscheme = xs;\n  xhr = new XMLHttpRequest(opts);\n\n  if (\"open\" in xhr && !opts.forceJSONP) {\n    return new XHR(opts);\n  } else {\n    if (!jsonp) throw new Error(\"JSONP disabled\");\n    return new JSONP(opts);\n  }\n}\n","const Polling = require(\"./polling\");\nconst globalThis = require(\"../globalThis\");\n\nconst rNewline = /\\n/g;\nconst rEscapedNewline = /\\\\n/g;\n\n/**\n * Global JSONP callbacks.\n */\n\nlet callbacks;\n\nclass JSONPPolling extends Polling {\n  /**\n   * JSONP Polling constructor.\n   *\n   * @param {Object} opts.\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    this.query = this.query || {};\n\n    // define global callbacks array if not present\n    // we do this here (lazily) to avoid unneeded global pollution\n    if (!callbacks) {\n      // we need to consider multiple engines in the same page\n      callbacks = globalThis.___eio = globalThis.___eio || [];\n    }\n\n    // callback identifier\n    this.index = callbacks.length;\n\n    // add callback to jsonp global\n    callbacks.push(this.onData.bind(this));\n\n    // append to query string\n    this.query.j = this.index;\n  }\n\n  /**\n   * JSONP only supports binary as base64 encoded strings\n   */\n  get supportsBinary() {\n    return false;\n  }\n\n  /**\n   * Closes the socket.\n   *\n   * @api private\n   */\n  doClose() {\n    if (this.script) {\n      // prevent spurious errors from being emitted when the window is unloaded\n      this.script.onerror = () => {};\n      this.script.parentNode.removeChild(this.script);\n      this.script = null;\n    }\n\n    if (this.form) {\n      this.form.parentNode.removeChild(this.form);\n      this.form = null;\n      this.iframe = null;\n    }\n\n    super.doClose();\n  }\n\n  /**\n   * Starts a poll cycle.\n   *\n   * @api private\n   */\n  doPoll() {\n    const script = document.createElement(\"script\");\n\n    if (this.script) {\n      this.script.parentNode.removeChild(this.script);\n      this.script = null;\n    }\n\n    script.async = true;\n    script.src = this.uri();\n    script.onerror = e => {\n      this.onError(\"jsonp poll error\", e);\n    };\n\n    const insertAt = document.getElementsByTagName(\"script\")[0];\n    if (insertAt) {\n      insertAt.parentNode.insertBefore(script, insertAt);\n    } else {\n      (document.head || document.body).appendChild(script);\n    }\n    this.script = script;\n\n    const isUAgecko =\n      \"undefined\" !== typeof navigator && /gecko/i.test(navigator.userAgent);\n\n    if (isUAgecko) {\n      setTimeout(function() {\n        const iframe = document.createElement(\"iframe\");\n        document.body.appendChild(iframe);\n        document.body.removeChild(iframe);\n      }, 100);\n    }\n  }\n\n  /**\n   * Writes with a hidden iframe.\n   *\n   * @param {String} data to send\n   * @param {Function} called upon flush.\n   * @api private\n   */\n  doWrite(data, fn) {\n    let iframe;\n\n    if (!this.form) {\n      const form = document.createElement(\"form\");\n      const area = document.createElement(\"textarea\");\n      const id = (this.iframeId = \"eio_iframe_\" + this.index);\n\n      form.className = \"socketio\";\n      form.style.position = \"absolute\";\n      form.style.top = \"-1000px\";\n      form.style.left = \"-1000px\";\n      form.target = id;\n      form.method = \"POST\";\n      form.setAttribute(\"accept-charset\", \"utf-8\");\n      area.name = \"d\";\n      form.appendChild(area);\n      document.body.appendChild(form);\n\n      this.form = form;\n      this.area = area;\n    }\n\n    this.form.action = this.uri();\n\n    function complete() {\n      initIframe();\n      fn();\n    }\n\n    const initIframe = () => {\n      if (this.iframe) {\n        try {\n          this.form.removeChild(this.iframe);\n        } catch (e) {\n          this.onError(\"jsonp polling iframe removal error\", e);\n        }\n      }\n\n      try {\n        // ie6 dynamic iframes with target=\"\" support (thanks Chris Lambacher)\n        const html = '<iframe src=\"javascript:0\" name=\"' + this.iframeId + '\">';\n        iframe = document.createElement(html);\n      } catch (e) {\n        iframe = document.createElement(\"iframe\");\n        iframe.name = this.iframeId;\n        iframe.src = \"javascript:0\";\n      }\n\n      iframe.id = this.iframeId;\n\n      this.form.appendChild(iframe);\n      this.iframe = iframe;\n    };\n\n    initIframe();\n\n    // escape \\n to prevent it from being converted into \\r\\n by some UAs\n    // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side\n    data = data.replace(rEscapedNewline, \"\\\\\\n\");\n    this.area.value = data.replace(rNewline, \"\\\\n\");\n\n    try {\n      this.form.submit();\n    } catch (e) {}\n\n    if (this.iframe.attachEvent) {\n      this.iframe.onreadystatechange = () => {\n        if (this.iframe.readyState === \"complete\") {\n          complete();\n        }\n      };\n    } else {\n      this.iframe.onload = complete;\n    }\n  }\n}\n\nmodule.exports = JSONPPolling;\n","/* global attachEvent */\n\nconst XMLHttpRequest = require(\"../../contrib/xmlhttprequest-ssl/XMLHttpRequest\");\nconst Polling = require(\"./polling\");\nconst Emitter = require(\"component-emitter\");\nconst { pick } = require(\"../util\");\nconst globalThis = require(\"../globalThis\");\n\nconst debug = require(\"debug\")(\"engine.io-client:polling-xhr\");\n\n/**\n * Empty function\n */\n\nfunction empty() {}\n\nconst hasXHR2 = (function() {\n  const xhr = new XMLHttpRequest({ xdomain: false });\n  return null != xhr.responseType;\n})();\n\nclass XHR extends Polling {\n  /**\n   * XHR Polling constructor.\n   *\n   * @param {Object} opts\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    if (typeof location !== \"undefined\") {\n      const isSSL = \"https:\" === location.protocol;\n      let port = location.port;\n\n      // some user agents have empty `location.port`\n      if (!port) {\n        port = isSSL ? 443 : 80;\n      }\n\n      this.xd =\n        (typeof location !== \"undefined\" &&\n          opts.hostname !== location.hostname) ||\n        port !== opts.port;\n      this.xs = opts.secure !== isSSL;\n    }\n    /**\n     * XHR supports binary\n     */\n    const forceBase64 = opts && opts.forceBase64;\n    this.supportsBinary = hasXHR2 && !forceBase64;\n  }\n\n  /**\n   * Creates a request.\n   *\n   * @param {String} method\n   * @api private\n   */\n  request(opts = {}) {\n    Object.assign(opts, { xd: this.xd, xs: this.xs }, this.opts);\n    return new Request(this.uri(), opts);\n  }\n\n  /**\n   * Sends data.\n   *\n   * @param {String} data to send.\n   * @param {Function} called upon flush.\n   * @api private\n   */\n  doWrite(data, fn) {\n    const req = this.request({\n      method: \"POST\",\n      data: data\n    });\n    req.on(\"success\", fn);\n    req.on(\"error\", err => {\n      this.onError(\"xhr post error\", err);\n    });\n  }\n\n  /**\n   * Starts a poll cycle.\n   *\n   * @api private\n   */\n  doPoll() {\n    debug(\"xhr poll\");\n    const req = this.request();\n    req.on(\"data\", this.onData.bind(this));\n    req.on(\"error\", err => {\n      this.onError(\"xhr poll error\", err);\n    });\n    this.pollXhr = req;\n  }\n}\n\nclass Request extends Emitter {\n  /**\n   * Request constructor\n   *\n   * @param {Object} options\n   * @api public\n   */\n  constructor(uri, opts) {\n    super();\n    this.opts = opts;\n\n    this.method = opts.method || \"GET\";\n    this.uri = uri;\n    this.async = false !== opts.async;\n    this.data = undefined !== opts.data ? opts.data : null;\n\n    this.create();\n  }\n\n  /**\n   * Creates the XHR object and sends the request.\n   *\n   * @api private\n   */\n  create() {\n    const opts = pick(\n      this.opts,\n      \"agent\",\n      \"enablesXDR\",\n      \"pfx\",\n      \"key\",\n      \"passphrase\",\n      \"cert\",\n      \"ca\",\n      \"ciphers\",\n      \"rejectUnauthorized\",\n      \"autoUnref\"\n    );\n    opts.xdomain = !!this.opts.xd;\n    opts.xscheme = !!this.opts.xs;\n\n    const xhr = (this.xhr = new XMLHttpRequest(opts));\n\n    try {\n      debug(\"xhr open %s: %s\", this.method, this.uri);\n      xhr.open(this.method, this.uri, this.async);\n      try {\n        if (this.opts.extraHeaders) {\n          xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);\n          for (let i in this.opts.extraHeaders) {\n            if (this.opts.extraHeaders.hasOwnProperty(i)) {\n              xhr.setRequestHeader(i, this.opts.extraHeaders[i]);\n            }\n          }\n        }\n      } catch (e) {}\n\n      if (\"POST\" === this.method) {\n        try {\n          xhr.setRequestHeader(\"Content-type\", \"text/plain;charset=UTF-8\");\n        } catch (e) {}\n      }\n\n      try {\n        xhr.setRequestHeader(\"Accept\", \"*/*\");\n      } catch (e) {}\n\n      // ie6 check\n      if (\"withCredentials\" in xhr) {\n        xhr.withCredentials = this.opts.withCredentials;\n      }\n\n      if (this.opts.requestTimeout) {\n        xhr.timeout = this.opts.requestTimeout;\n      }\n\n      if (this.hasXDR()) {\n        xhr.onload = () => {\n          this.onLoad();\n        };\n        xhr.onerror = () => {\n          this.onError(xhr.responseText);\n        };\n      } else {\n        xhr.onreadystatechange = () => {\n          if (4 !== xhr.readyState) return;\n          if (200 === xhr.status || 1223 === xhr.status) {\n            this.onLoad();\n          } else {\n            // make sure the `error` event handler that's user-set\n            // does not throw in the same tick and gets caught here\n            setTimeout(() => {\n              this.onError(typeof xhr.status === \"number\" ? xhr.status : 0);\n            }, 0);\n          }\n        };\n      }\n\n      debug(\"xhr data %s\", this.data);\n      xhr.send(this.data);\n    } catch (e) {\n      // Need to defer since .create() is called directly from the constructor\n      // and thus the 'error' event can only be only bound *after* this exception\n      // occurs.  Therefore, also, we cannot throw here at all.\n      setTimeout(() => {\n        this.onError(e);\n      }, 0);\n      return;\n    }\n\n    if (typeof document !== \"undefined\") {\n      this.index = Request.requestsCount++;\n      Request.requests[this.index] = this;\n    }\n  }\n\n  /**\n   * Called upon successful response.\n   *\n   * @api private\n   */\n  onSuccess() {\n    this.emit(\"success\");\n    this.cleanup();\n  }\n\n  /**\n   * Called if we have data.\n   *\n   * @api private\n   */\n  onData(data) {\n    this.emit(\"data\", data);\n    this.onSuccess();\n  }\n\n  /**\n   * Called upon error.\n   *\n   * @api private\n   */\n  onError(err) {\n    this.emit(\"error\", err);\n    this.cleanup(true);\n  }\n\n  /**\n   * Cleans up house.\n   *\n   * @api private\n   */\n  cleanup(fromError) {\n    if (\"undefined\" === typeof this.xhr || null === this.xhr) {\n      return;\n    }\n    // xmlhttprequest\n    if (this.hasXDR()) {\n      this.xhr.onload = this.xhr.onerror = empty;\n    } else {\n      this.xhr.onreadystatechange = empty;\n    }\n\n    if (fromError) {\n      try {\n        this.xhr.abort();\n      } catch (e) {}\n    }\n\n    if (typeof document !== \"undefined\") {\n      delete Request.requests[this.index];\n    }\n\n    this.xhr = null;\n  }\n\n  /**\n   * Called upon load.\n   *\n   * @api private\n   */\n  onLoad() {\n    const data = this.xhr.responseText;\n    if (data !== null) {\n      this.onData(data);\n    }\n  }\n\n  /**\n   * Check if it has XDomainRequest.\n   *\n   * @api private\n   */\n  hasXDR() {\n    return typeof XDomainRequest !== \"undefined\" && !this.xs && this.enablesXDR;\n  }\n\n  /**\n   * Aborts the request.\n   *\n   * @api public\n   */\n  abort() {\n    this.cleanup();\n  }\n}\n\n/**\n * Aborts pending requests when unloading the window. This is needed to prevent\n * memory leaks (e.g. when using IE) and to ensure that no spurious error is\n * emitted.\n */\n\nRequest.requestsCount = 0;\nRequest.requests = {};\n\nif (typeof document !== \"undefined\") {\n  if (typeof attachEvent === \"function\") {\n    attachEvent(\"onunload\", unloadHandler);\n  } else if (typeof addEventListener === \"function\") {\n    const terminationEvent = \"onpagehide\" in globalThis ? \"pagehide\" : \"unload\";\n    addEventListener(terminationEvent, unloadHandler, false);\n  }\n}\n\nfunction unloadHandler() {\n  for (let i in Request.requests) {\n    if (Request.requests.hasOwnProperty(i)) {\n      Request.requests[i].abort();\n    }\n  }\n}\n\nmodule.exports = XHR;\nmodule.exports.Request = Request;\n","const Transport = require(\"../transport\");\nconst parseqs = require(\"parseqs\");\nconst parser = require(\"engine.io-parser\");\nconst yeast = require(\"yeast\");\n\nconst debug = require(\"debug\")(\"engine.io-client:polling\");\n\nclass Polling extends Transport {\n  /**\n   * Transport name.\n   */\n  get name() {\n    return \"polling\";\n  }\n\n  /**\n   * Opens the socket (triggers polling). We write a PING message to determine\n   * when the transport is open.\n   *\n   * @api private\n   */\n  doOpen() {\n    this.poll();\n  }\n\n  /**\n   * Pauses polling.\n   *\n   * @param {Function} callback upon buffers are flushed and transport is paused\n   * @api private\n   */\n  pause(onPause) {\n    this.readyState = \"pausing\";\n\n    const pause = () => {\n      debug(\"paused\");\n      this.readyState = \"paused\";\n      onPause();\n    };\n\n    if (this.polling || !this.writable) {\n      let total = 0;\n\n      if (this.polling) {\n        debug(\"we are currently polling - waiting to pause\");\n        total++;\n        this.once(\"pollComplete\", function() {\n          debug(\"pre-pause polling complete\");\n          --total || pause();\n        });\n      }\n\n      if (!this.writable) {\n        debug(\"we are currently writing - waiting to pause\");\n        total++;\n        this.once(\"drain\", function() {\n          debug(\"pre-pause writing complete\");\n          --total || pause();\n        });\n      }\n    } else {\n      pause();\n    }\n  }\n\n  /**\n   * Starts polling cycle.\n   *\n   * @api public\n   */\n  poll() {\n    debug(\"polling\");\n    this.polling = true;\n    this.doPoll();\n    this.emit(\"poll\");\n  }\n\n  /**\n   * Overloads onData to detect payloads.\n   *\n   * @api private\n   */\n  onData(data) {\n    debug(\"polling got data %s\", data);\n    const callback = packet => {\n      // if its the first message we consider the transport open\n      if (\"opening\" === this.readyState && packet.type === \"open\") {\n        this.onOpen();\n      }\n\n      // if its a close packet, we close the ongoing requests\n      if (\"close\" === packet.type) {\n        this.onClose();\n        return false;\n      }\n\n      // otherwise bypass onData and handle the message\n      this.onPacket(packet);\n    };\n\n    // decode payload\n    parser.decodePayload(data, this.socket.binaryType).forEach(callback);\n\n    // if an event did not trigger closing\n    if (\"closed\" !== this.readyState) {\n      // if we got data we're not polling\n      this.polling = false;\n      this.emit(\"pollComplete\");\n\n      if (\"open\" === this.readyState) {\n        this.poll();\n      } else {\n        debug('ignoring poll - transport state \"%s\"', this.readyState);\n      }\n    }\n  }\n\n  /**\n   * For polling, send a close packet.\n   *\n   * @api private\n   */\n  doClose() {\n    const close = () => {\n      debug(\"writing close packet\");\n      this.write([{ type: \"close\" }]);\n    };\n\n    if (\"open\" === this.readyState) {\n      debug(\"transport open - closing\");\n      close();\n    } else {\n      // in case we're trying to close while\n      // handshaking is in progress (GH-164)\n      debug(\"transport not open - deferring close\");\n      this.once(\"open\", close);\n    }\n  }\n\n  /**\n   * Writes a packets payload.\n   *\n   * @param {Array} data packets\n   * @param {Function} drain callback\n   * @api private\n   */\n  write(packets) {\n    this.writable = false;\n\n    parser.encodePayload(packets, data => {\n      this.doWrite(data, () => {\n        this.writable = true;\n        this.emit(\"drain\");\n      });\n    });\n  }\n\n  /**\n   * Generates uri for connection.\n   *\n   * @api private\n   */\n  uri() {\n    let query = this.query || {};\n    const schema = this.opts.secure ? \"https\" : \"http\";\n    let port = \"\";\n\n    // cache busting is forced\n    if (false !== this.opts.timestampRequests) {\n      query[this.opts.timestampParam] = yeast();\n    }\n\n    if (!this.supportsBinary && !query.sid) {\n      query.b64 = 1;\n    }\n\n    query = parseqs.encode(query);\n\n    // avoid port if default for schema\n    if (\n      this.opts.port &&\n      ((\"https\" === schema && Number(this.opts.port) !== 443) ||\n        (\"http\" === schema && Number(this.opts.port) !== 80))\n    ) {\n      port = \":\" + this.opts.port;\n    }\n\n    // prepend ? to query\n    if (query.length) {\n      query = \"?\" + query;\n    }\n\n    const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n    return (\n      schema +\n      \"://\" +\n      (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n      port +\n      this.opts.path +\n      query\n    );\n  }\n}\n\nmodule.exports = Polling;\n","const globalThis = require(\"../globalThis\");\nconst nextTick = (() => {\n  const isPromiseAvailable =\n    typeof Promise === \"function\" && typeof Promise.resolve === \"function\";\n  if (isPromiseAvailable) {\n    return cb => Promise.resolve().then(cb);\n  } else {\n    return cb => setTimeout(cb, 0);\n  }\n})();\n\nmodule.exports = {\n  WebSocket: globalThis.WebSocket || globalThis.MozWebSocket,\n  usingBrowserWebSocket: true,\n  defaultBinaryType: \"arraybuffer\",\n  nextTick\n};\n","const Transport = require(\"../transport\");\nconst parser = require(\"engine.io-parser\");\nconst parseqs = require(\"parseqs\");\nconst yeast = require(\"yeast\");\nconst { pick } = require(\"../util\");\nconst {\n  WebSocket,\n  usingBrowserWebSocket,\n  defaultBinaryType,\n  nextTick\n} = require(\"./websocket-constructor\");\n\nconst debug = require(\"debug\")(\"engine.io-client:websocket\");\n\n// detect ReactNative environment\nconst isReactNative =\n  typeof navigator !== \"undefined\" &&\n  typeof navigator.product === \"string\" &&\n  navigator.product.toLowerCase() === \"reactnative\";\n\nclass WS extends Transport {\n  /**\n   * WebSocket transport constructor.\n   *\n   * @api {Object} connection options\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    this.supportsBinary = !opts.forceBase64;\n  }\n\n  /**\n   * Transport name.\n   *\n   * @api public\n   */\n  get name() {\n    return \"websocket\";\n  }\n\n  /**\n   * Opens socket.\n   *\n   * @api private\n   */\n  doOpen() {\n    if (!this.check()) {\n      // let probe timeout\n      return;\n    }\n\n    const uri = this.uri();\n    const protocols = this.opts.protocols;\n\n    // React Native only supports the 'headers' option, and will print a warning if anything else is passed\n    const opts = isReactNative\n      ? {}\n      : pick(\n          this.opts,\n          \"agent\",\n          \"perMessageDeflate\",\n          \"pfx\",\n          \"key\",\n          \"passphrase\",\n          \"cert\",\n          \"ca\",\n          \"ciphers\",\n          \"rejectUnauthorized\",\n          \"localAddress\",\n          \"protocolVersion\",\n          \"origin\",\n          \"maxPayload\",\n          \"family\",\n          \"checkServerIdentity\"\n        );\n\n    if (this.opts.extraHeaders) {\n      opts.headers = this.opts.extraHeaders;\n    }\n\n    try {\n      this.ws =\n        usingBrowserWebSocket && !isReactNative\n          ? protocols\n            ? new WebSocket(uri, protocols)\n            : new WebSocket(uri)\n          : new WebSocket(uri, protocols, opts);\n    } catch (err) {\n      return this.emit(\"error\", err);\n    }\n\n    this.ws.binaryType = this.socket.binaryType || defaultBinaryType;\n\n    this.addEventListeners();\n  }\n\n  /**\n   * Adds event listeners to the socket\n   *\n   * @api private\n   */\n  addEventListeners() {\n    this.ws.onopen = () => {\n      if (this.opts.autoUnref) {\n        this.ws._socket.unref();\n      }\n      this.onOpen();\n    };\n    this.ws.onclose = this.onClose.bind(this);\n    this.ws.onmessage = ev => this.onData(ev.data);\n    this.ws.onerror = e => this.onError(\"websocket error\", e);\n  }\n\n  /**\n   * Writes data to socket.\n   *\n   * @param {Array} array of packets.\n   * @api private\n   */\n  write(packets) {\n    this.writable = false;\n\n    // encodePacket efficient as it uses WS framing\n    // no need for encodePayload\n    for (let i = 0; i < packets.length; i++) {\n      const packet = packets[i];\n      const lastPacket = i === packets.length - 1;\n\n      parser.encodePacket(packet, this.supportsBinary, data => {\n        // always create a new object (GH-437)\n        const opts = {};\n        if (!usingBrowserWebSocket) {\n          if (packet.options) {\n            opts.compress = packet.options.compress;\n          }\n\n          if (this.opts.perMessageDeflate) {\n            const len =\n              \"string\" === typeof data ? Buffer.byteLength(data) : data.length;\n            if (len < this.opts.perMessageDeflate.threshold) {\n              opts.compress = false;\n            }\n          }\n        }\n\n        // Sometimes the websocket has already been closed but the browser didn't\n        // have a chance of informing us about it yet, in that case send will\n        // throw an error\n        try {\n          if (usingBrowserWebSocket) {\n            // TypeError is thrown when passing the second argument on Safari\n            this.ws.send(data);\n          } else {\n            this.ws.send(data, opts);\n          }\n        } catch (e) {\n          debug(\"websocket closed before onclose event\");\n        }\n\n        if (lastPacket) {\n          // fake drain\n          // defer to next tick to allow Socket to clear writeBuffer\n          nextTick(() => {\n            this.writable = true;\n            this.emit(\"drain\");\n          });\n        }\n      });\n    }\n  }\n\n  /**\n   * Called upon close\n   *\n   * @api private\n   */\n  onClose() {\n    Transport.prototype.onClose.call(this);\n  }\n\n  /**\n   * Closes socket.\n   *\n   * @api private\n   */\n  doClose() {\n    if (typeof this.ws !== \"undefined\") {\n      this.ws.close();\n      this.ws = null;\n    }\n  }\n\n  /**\n   * Generates uri for connection.\n   *\n   * @api private\n   */\n  uri() {\n    let query = this.query || {};\n    const schema = this.opts.secure ? \"wss\" : \"ws\";\n    let port = \"\";\n\n    // avoid port if default for schema\n    if (\n      this.opts.port &&\n      ((\"wss\" === schema && Number(this.opts.port) !== 443) ||\n        (\"ws\" === schema && Number(this.opts.port) !== 80))\n    ) {\n      port = \":\" + this.opts.port;\n    }\n\n    // append timestamp to URI\n    if (this.opts.timestampRequests) {\n      query[this.opts.timestampParam] = yeast();\n    }\n\n    // communicate binary support capabilities\n    if (!this.supportsBinary) {\n      query.b64 = 1;\n    }\n\n    query = parseqs.encode(query);\n\n    // prepend ? to query\n    if (query.length) {\n      query = \"?\" + query;\n    }\n\n    const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n    return (\n      schema +\n      \"://\" +\n      (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n      port +\n      this.opts.path +\n      query\n    );\n  }\n\n  /**\n   * Feature detection for WebSocket.\n   *\n   * @return {Boolean} whether this transport is available.\n   * @api public\n   */\n  check() {\n    return (\n      !!WebSocket &&\n      !(\"__initialize\" in WebSocket && this.name === WS.prototype.name)\n    );\n  }\n}\n\nmodule.exports = WS;\n","module.exports.pick = (obj, ...attr) => {\n  return attr.reduce((acc, k) => {\n    if (obj.hasOwnProperty(k)) {\n      acc[k] = obj[k];\n    }\n    return acc;\n  }, {});\n};\n","// browser shim for xmlhttprequest module\n\nconst hasCORS = require(\"has-cors\");\nconst globalThis = require(\"./globalThis\");\n\nmodule.exports = function(opts) {\n  const xdomain = opts.xdomain;\n\n  // scheme must be same when usign XDomainRequest\n  // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx\n  const xscheme = opts.xscheme;\n\n  // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.\n  // https://github.com/Automattic/engine.io-client/pull/217\n  const enablesXDR = opts.enablesXDR;\n\n  // XMLHttpRequest can be disabled on IE\n  try {\n    if (\"undefined\" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {\n      return new XMLHttpRequest();\n    }\n  } catch (e) {}\n\n  // Use XDomainRequest for IE8 if enablesXDR is true\n  // because loading bar keeps flashing when using jsonp-polling\n  // https://github.com/yujiosaka/socke.io-ie8-loading-example\n  try {\n    if (\"undefined\" !== typeof XDomainRequest && !xscheme && enablesXDR) {\n      return new XDomainRequest();\n    }\n  } catch (e) {}\n\n  if (!xdomain) {\n    try {\n      return new globalThis[[\"Active\"].concat(\"Object\").join(\"X\")](\n        \"Microsoft.XMLHTTP\"\n      );\n    } catch (e) {}\n  }\n};\n","const PACKET_TYPES = Object.create(null); // no Map = no polyfill\nPACKET_TYPES[\"open\"] = \"0\";\nPACKET_TYPES[\"close\"] = \"1\";\nPACKET_TYPES[\"ping\"] = \"2\";\nPACKET_TYPES[\"pong\"] = \"3\";\nPACKET_TYPES[\"message\"] = \"4\";\nPACKET_TYPES[\"upgrade\"] = \"5\";\nPACKET_TYPES[\"noop\"] = \"6\";\n\nconst PACKET_TYPES_REVERSE = Object.create(null);\nObject.keys(PACKET_TYPES).forEach(key => {\n  PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;\n});\n\nconst ERROR_PACKET = { type: \"error\", data: \"parser error\" };\n\nmodule.exports = {\n  PACKET_TYPES,\n  PACKET_TYPES_REVERSE,\n  ERROR_PACKET\n};\n","const { PACKET_TYPES_REVERSE, ERROR_PACKET } = require(\"./commons\");\n\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n\nlet base64decoder;\nif (withNativeArrayBuffer) {\n  base64decoder = require(\"base64-arraybuffer\");\n}\n\nconst decodePacket = (encodedPacket, binaryType) => {\n  if (typeof encodedPacket !== \"string\") {\n    return {\n      type: \"message\",\n      data: mapBinary(encodedPacket, binaryType)\n    };\n  }\n  const type = encodedPacket.charAt(0);\n  if (type === \"b\") {\n    return {\n      type: \"message\",\n      data: decodeBase64Packet(encodedPacket.substring(1), binaryType)\n    };\n  }\n  const packetType = PACKET_TYPES_REVERSE[type];\n  if (!packetType) {\n    return ERROR_PACKET;\n  }\n  return encodedPacket.length > 1\n    ? {\n        type: PACKET_TYPES_REVERSE[type],\n        data: encodedPacket.substring(1)\n      }\n    : {\n        type: PACKET_TYPES_REVERSE[type]\n      };\n};\n\nconst decodeBase64Packet = (data, binaryType) => {\n  if (base64decoder) {\n    const decoded = base64decoder.decode(data);\n    return mapBinary(decoded, binaryType);\n  } else {\n    return { base64: true, data }; // fallback for old browsers\n  }\n};\n\nconst mapBinary = (data, binaryType) => {\n  switch (binaryType) {\n    case \"blob\":\n      return data instanceof ArrayBuffer ? new Blob([data]) : data;\n    case \"arraybuffer\":\n    default:\n      return data; // assuming the data is already an ArrayBuffer\n  }\n};\n\nmodule.exports = decodePacket;\n","const { PACKET_TYPES } = require(\"./commons\");\n\nconst withNativeBlob =\n  typeof Blob === \"function\" ||\n  (typeof Blob !== \"undefined\" &&\n    Object.prototype.toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n\n// ArrayBuffer.isView method is not defined in IE10\nconst isView = obj => {\n  return typeof ArrayBuffer.isView === \"function\"\n    ? ArrayBuffer.isView(obj)\n    : obj && obj.buffer instanceof ArrayBuffer;\n};\n\nconst encodePacket = ({ type, data }, supportsBinary, callback) => {\n  if (withNativeBlob && data instanceof Blob) {\n    if (supportsBinary) {\n      return callback(data);\n    } else {\n      return encodeBlobAsBase64(data, callback);\n    }\n  } else if (\n    withNativeArrayBuffer &&\n    (data instanceof ArrayBuffer || isView(data))\n  ) {\n    if (supportsBinary) {\n      return callback(data instanceof ArrayBuffer ? data : data.buffer);\n    } else {\n      return encodeBlobAsBase64(new Blob([data]), callback);\n    }\n  }\n  // plain string\n  return callback(PACKET_TYPES[type] + (data || \"\"));\n};\n\nconst encodeBlobAsBase64 = (data, callback) => {\n  const fileReader = new FileReader();\n  fileReader.onload = function() {\n    const content = fileReader.result.split(\",\")[1];\n    callback(\"b\" + content);\n  };\n  return fileReader.readAsDataURL(data);\n};\n\nmodule.exports = encodePacket;\n","const encodePacket = require(\"./encodePacket\");\nconst decodePacket = require(\"./decodePacket\");\n\nconst SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text\n\nconst encodePayload = (packets, callback) => {\n  // some packets may be added to the array while encoding, so the initial length must be saved\n  const length = packets.length;\n  const encodedPackets = new Array(length);\n  let count = 0;\n\n  packets.forEach((packet, i) => {\n    // force base64 encoding for binary packets\n    encodePacket(packet, false, encodedPacket => {\n      encodedPackets[i] = encodedPacket;\n      if (++count === length) {\n        callback(encodedPackets.join(SEPARATOR));\n      }\n    });\n  });\n};\n\nconst decodePayload = (encodedPayload, binaryType) => {\n  const encodedPackets = encodedPayload.split(SEPARATOR);\n  const packets = [];\n  for (let i = 0; i < encodedPackets.length; i++) {\n    const decodedPacket = decodePacket(encodedPackets[i], binaryType);\n    packets.push(decodedPacket);\n    if (decodedPacket.type === \"error\") {\n      break;\n    }\n  }\n  return packets;\n};\n\nmodule.exports = {\n  protocol: 4,\n  encodePacket,\n  encodePayload,\n  decodePacket,\n  decodePayload\n};\n","/*\n * base64-arraybuffer\n * https://github.com/niklasvh/base64-arraybuffer\n *\n * Copyright (c) 2012 Niklas von Hertzen\n * Licensed under the MIT license.\n */\n(function(chars){\n  \"use strict\";\n\n  exports.encode = function(arraybuffer) {\n    var bytes = new Uint8Array(arraybuffer),\n    i, len = bytes.length, base64 = \"\";\n\n    for (i = 0; i < len; i+=3) {\n      base64 += chars[bytes[i] >> 2];\n      base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];\n      base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];\n      base64 += chars[bytes[i + 2] & 63];\n    }\n\n    if ((len % 3) === 2) {\n      base64 = base64.substring(0, base64.length - 1) + \"=\";\n    } else if (len % 3 === 1) {\n      base64 = base64.substring(0, base64.length - 2) + \"==\";\n    }\n\n    return base64;\n  };\n\n  exports.decode =  function(base64) {\n    var bufferLength = base64.length * 0.75,\n    len = base64.length, i, p = 0,\n    encoded1, encoded2, encoded3, encoded4;\n\n    if (base64[base64.length - 1] === \"=\") {\n      bufferLength--;\n      if (base64[base64.length - 2] === \"=\") {\n        bufferLength--;\n      }\n    }\n\n    var arraybuffer = new ArrayBuffer(bufferLength),\n    bytes = new Uint8Array(arraybuffer);\n\n    for (i = 0; i < len; i+=4) {\n      encoded1 = chars.indexOf(base64[i]);\n      encoded2 = chars.indexOf(base64[i+1]);\n      encoded3 = chars.indexOf(base64[i+2]);\n      encoded4 = chars.indexOf(base64[i+3]);\n\n      bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);\n      bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);\n      bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);\n    }\n\n    return arraybuffer;\n  };\n})(\"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\");\n","\n/**\n * Module exports.\n *\n * Logic borrowed from Modernizr:\n *\n *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js\n */\n\ntry {\n  module.exports = typeof XMLHttpRequest !== 'undefined' &&\n    'withCredentials' in new XMLHttpRequest();\n} catch (err) {\n  // if XMLHttp support is disabled in IE then it will throw\n  // when trying to create\n  module.exports = false;\n}\n","/**\n * Helpers.\n */\n\nvar s = 1000;\nvar m = s * 60;\nvar h = m * 60;\nvar d = h * 24;\nvar w = d * 7;\nvar y = d * 365.25;\n\n/**\n * Parse or format the given `val`.\n *\n * Options:\n *\n *  - `long` verbose formatting [false]\n *\n * @param {String|Number} val\n * @param {Object} [options]\n * @throws {Error} throw an error if val is not a non-empty string or a number\n * @return {String|Number}\n * @api public\n */\n\nmodule.exports = function(val, options) {\n  options = options || {};\n  var type = typeof val;\n  if (type === 'string' && val.length > 0) {\n    return parse(val);\n  } else if (type === 'number' && isFinite(val)) {\n    return options.long ? fmtLong(val) : fmtShort(val);\n  }\n  throw new Error(\n    'val is not a non-empty string or a valid number. val=' +\n      JSON.stringify(val)\n  );\n};\n\n/**\n * Parse the given `str` and return milliseconds.\n *\n * @param {String} str\n * @return {Number}\n * @api private\n */\n\nfunction parse(str) {\n  str = String(str);\n  if (str.length > 100) {\n    return;\n  }\n  var match = /^(-?(?:\\d+)?\\.?\\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(\n    str\n  );\n  if (!match) {\n    return;\n  }\n  var n = parseFloat(match[1]);\n  var type = (match[2] || 'ms').toLowerCase();\n  switch (type) {\n    case 'years':\n    case 'year':\n    case 'yrs':\n    case 'yr':\n    case 'y':\n      return n * y;\n    case 'weeks':\n    case 'week':\n    case 'w':\n      return n * w;\n    case 'days':\n    case 'day':\n    case 'd':\n      return n * d;\n    case 'hours':\n    case 'hour':\n    case 'hrs':\n    case 'hr':\n    case 'h':\n      return n * h;\n    case 'minutes':\n    case 'minute':\n    case 'mins':\n    case 'min':\n    case 'm':\n      return n * m;\n    case 'seconds':\n    case 'second':\n    case 'secs':\n    case 'sec':\n    case 's':\n      return n * s;\n    case 'milliseconds':\n    case 'millisecond':\n    case 'msecs':\n    case 'msec':\n    case 'ms':\n      return n;\n    default:\n      return undefined;\n  }\n}\n\n/**\n * Short format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtShort(ms) {\n  var msAbs = Math.abs(ms);\n  if (msAbs >= d) {\n    return Math.round(ms / d) + 'd';\n  }\n  if (msAbs >= h) {\n    return Math.round(ms / h) + 'h';\n  }\n  if (msAbs >= m) {\n    return Math.round(ms / m) + 'm';\n  }\n  if (msAbs >= s) {\n    return Math.round(ms / s) + 's';\n  }\n  return ms + 'ms';\n}\n\n/**\n * Long format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtLong(ms) {\n  var msAbs = Math.abs(ms);\n  if (msAbs >= d) {\n    return plural(ms, msAbs, d, 'day');\n  }\n  if (msAbs >= h) {\n    return plural(ms, msAbs, h, 'hour');\n  }\n  if (msAbs >= m) {\n    return plural(ms, msAbs, m, 'minute');\n  }\n  if (msAbs >= s) {\n    return plural(ms, msAbs, s, 'second');\n  }\n  return ms + ' ms';\n}\n\n/**\n * Pluralization helper.\n */\n\nfunction plural(ms, msAbs, n, name) {\n  var isPlural = msAbs >= n * 1.5;\n  return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');\n}\n","/**\n * Compiles a querystring\n * Returns string representation of the object\n *\n * @param {Object}\n * @api private\n */\n\nexports.encode = function (obj) {\n  var str = '';\n\n  for (var i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      if (str.length) str += '&';\n      str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);\n    }\n  }\n\n  return str;\n};\n\n/**\n * Parses a simple querystring into an object\n *\n * @param {String} qs\n * @api private\n */\n\nexports.decode = function(qs){\n  var qry = {};\n  var pairs = qs.split('&');\n  for (var i = 0, l = pairs.length; i < l; i++) {\n    var pair = pairs[i].split('=');\n    qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);\n  }\n  return qry;\n};\n","/**\n * Parses an URI\n *\n * @author Steven Levithan <stevenlevithan.com> (MIT license)\n * @api private\n */\n\nvar re = /^(?:(?![^:@]+:[^:@\\/]*@)(http|https|ws|wss):\\/\\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\\/?#]*)(?::(\\d*))?)(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))(?:\\?([^#]*))?(?:#(.*))?)/;\n\nvar parts = [\n    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'\n];\n\nmodule.exports = function parseuri(str) {\n    var src = str,\n        b = str.indexOf('['),\n        e = str.indexOf(']');\n\n    if (b != -1 && e != -1) {\n        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);\n    }\n\n    var m = re.exec(str || ''),\n        uri = {},\n        i = 14;\n\n    while (i--) {\n        uri[parts[i]] = m[i] || '';\n    }\n\n    if (b != -1 && e != -1) {\n        uri.source = src;\n        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');\n        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');\n        uri.ipv6uri = true;\n    }\n\n    uri.pathNames = pathNames(uri, uri['path']);\n    uri.queryKey = queryKey(uri, uri['query']);\n\n    return uri;\n};\n\nfunction pathNames(obj, path) {\n    var regx = /\\/{2,9}/g,\n        names = path.replace(regx, \"/\").split(\"/\");\n\n    if (path.substr(0, 1) == '/' || path.length === 0) {\n        names.splice(0, 1);\n    }\n    if (path.substr(path.length - 1, 1) == '/') {\n        names.splice(names.length - 1, 1);\n    }\n\n    return names;\n}\n\nfunction queryKey(uri, query) {\n    var data = {};\n\n    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {\n        if ($1) {\n            data[$1] = $2;\n        }\n    });\n\n    return data;\n}\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.reconstructPacket = exports.deconstructPacket = void 0;\nconst is_binary_1 = require(\"./is-binary\");\n/**\n * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.\n *\n * @param {Object} packet - socket.io event packet\n * @return {Object} with deconstructed packet and list of buffers\n * @public\n */\nfunction deconstructPacket(packet) {\n    const buffers = [];\n    const packetData = packet.data;\n    const pack = packet;\n    pack.data = _deconstructPacket(packetData, buffers);\n    pack.attachments = buffers.length; // number of binary 'attachments'\n    return { packet: pack, buffers: buffers };\n}\nexports.deconstructPacket = deconstructPacket;\nfunction _deconstructPacket(data, buffers) {\n    if (!data)\n        return data;\n    if (is_binary_1.isBinary(data)) {\n        const placeholder = { _placeholder: true, num: buffers.length };\n        buffers.push(data);\n        return placeholder;\n    }\n    else if (Array.isArray(data)) {\n        const newData = new Array(data.length);\n        for (let i = 0; i < data.length; i++) {\n            newData[i] = _deconstructPacket(data[i], buffers);\n        }\n        return newData;\n    }\n    else if (typeof data === \"object\" && !(data instanceof Date)) {\n        const newData = {};\n        for (const key in data) {\n            if (data.hasOwnProperty(key)) {\n                newData[key] = _deconstructPacket(data[key], buffers);\n            }\n        }\n        return newData;\n    }\n    return data;\n}\n/**\n * Reconstructs a binary packet from its placeholder packet and buffers\n *\n * @param {Object} packet - event packet with placeholders\n * @param {Array} buffers - binary buffers to put in placeholder positions\n * @return {Object} reconstructed packet\n * @public\n */\nfunction reconstructPacket(packet, buffers) {\n    packet.data = _reconstructPacket(packet.data, buffers);\n    packet.attachments = undefined; // no longer useful\n    return packet;\n}\nexports.reconstructPacket = reconstructPacket;\nfunction _reconstructPacket(data, buffers) {\n    if (!data)\n        return data;\n    if (data && data._placeholder) {\n        return buffers[data.num]; // appropriate buffer (should be natural order anyway)\n    }\n    else if (Array.isArray(data)) {\n        for (let i = 0; i < data.length; i++) {\n            data[i] = _reconstructPacket(data[i], buffers);\n        }\n    }\n    else if (typeof data === \"object\") {\n        for (const key in data) {\n            if (data.hasOwnProperty(key)) {\n                data[key] = _reconstructPacket(data[key], buffers);\n            }\n        }\n    }\n    return data;\n}\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Decoder = exports.Encoder = exports.PacketType = exports.protocol = void 0;\nconst Emitter = require(\"component-emitter\");\nconst binary_1 = require(\"./binary\");\nconst is_binary_1 = require(\"./is-binary\");\nconst debug = require(\"debug\")(\"socket.io-parser\");\n/**\n * Protocol version.\n *\n * @public\n */\nexports.protocol = 5;\nvar PacketType;\n(function (PacketType) {\n    PacketType[PacketType[\"CONNECT\"] = 0] = \"CONNECT\";\n    PacketType[PacketType[\"DISCONNECT\"] = 1] = \"DISCONNECT\";\n    PacketType[PacketType[\"EVENT\"] = 2] = \"EVENT\";\n    PacketType[PacketType[\"ACK\"] = 3] = \"ACK\";\n    PacketType[PacketType[\"CONNECT_ERROR\"] = 4] = \"CONNECT_ERROR\";\n    PacketType[PacketType[\"BINARY_EVENT\"] = 5] = \"BINARY_EVENT\";\n    PacketType[PacketType[\"BINARY_ACK\"] = 6] = \"BINARY_ACK\";\n})(PacketType = exports.PacketType || (exports.PacketType = {}));\n/**\n * A socket.io Encoder instance\n */\nclass Encoder {\n    /**\n     * Encode a packet as a single string if non-binary, or as a\n     * buffer sequence, depending on packet type.\n     *\n     * @param {Object} obj - packet object\n     */\n    encode(obj) {\n        debug(\"encoding packet %j\", obj);\n        if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {\n            if (is_binary_1.hasBinary(obj)) {\n                obj.type =\n                    obj.type === PacketType.EVENT\n                        ? PacketType.BINARY_EVENT\n                        : PacketType.BINARY_ACK;\n                return this.encodeAsBinary(obj);\n            }\n        }\n        return [this.encodeAsString(obj)];\n    }\n    /**\n     * Encode packet as string.\n     */\n    encodeAsString(obj) {\n        // first is type\n        let str = \"\" + obj.type;\n        // attachments if we have them\n        if (obj.type === PacketType.BINARY_EVENT ||\n            obj.type === PacketType.BINARY_ACK) {\n            str += obj.attachments + \"-\";\n        }\n        // if we have a namespace other than `/`\n        // we append it followed by a comma `,`\n        if (obj.nsp && \"/\" !== obj.nsp) {\n            str += obj.nsp + \",\";\n        }\n        // immediately followed by the id\n        if (null != obj.id) {\n            str += obj.id;\n        }\n        // json data\n        if (null != obj.data) {\n            str += JSON.stringify(obj.data);\n        }\n        debug(\"encoded %j as %s\", obj, str);\n        return str;\n    }\n    /**\n     * Encode packet as 'buffer sequence' by removing blobs, and\n     * deconstructing packet into object with placeholders and\n     * a list of buffers.\n     */\n    encodeAsBinary(obj) {\n        const deconstruction = binary_1.deconstructPacket(obj);\n        const pack = this.encodeAsString(deconstruction.packet);\n        const buffers = deconstruction.buffers;\n        buffers.unshift(pack); // add packet info to beginning of data list\n        return buffers; // write all the buffers\n    }\n}\nexports.Encoder = Encoder;\n/**\n * A socket.io Decoder instance\n *\n * @return {Object} decoder\n */\nclass Decoder extends Emitter {\n    constructor() {\n        super();\n    }\n    /**\n     * Decodes an encoded packet string into packet JSON.\n     *\n     * @param {String} obj - encoded packet\n     */\n    add(obj) {\n        let packet;\n        if (typeof obj === \"string\") {\n            packet = this.decodeString(obj);\n            if (packet.type === PacketType.BINARY_EVENT ||\n                packet.type === PacketType.BINARY_ACK) {\n                // binary packet's json\n                this.reconstructor = new BinaryReconstructor(packet);\n                // no attachments, labeled binary but no binary data to follow\n                if (packet.attachments === 0) {\n                    super.emit(\"decoded\", packet);\n                }\n            }\n            else {\n                // non-binary full packet\n                super.emit(\"decoded\", packet);\n            }\n        }\n        else if (is_binary_1.isBinary(obj) || obj.base64) {\n            // raw binary data\n            if (!this.reconstructor) {\n                throw new Error(\"got binary data when not reconstructing a packet\");\n            }\n            else {\n                packet = this.reconstructor.takeBinaryData(obj);\n                if (packet) {\n                    // received final buffer\n                    this.reconstructor = null;\n                    super.emit(\"decoded\", packet);\n                }\n            }\n        }\n        else {\n            throw new Error(\"Unknown type: \" + obj);\n        }\n    }\n    /**\n     * Decode a packet String (JSON data)\n     *\n     * @param {String} str\n     * @return {Object} packet\n     */\n    decodeString(str) {\n        let i = 0;\n        // look up type\n        const p = {\n            type: Number(str.charAt(0)),\n        };\n        if (PacketType[p.type] === undefined) {\n            throw new Error(\"unknown packet type \" + p.type);\n        }\n        // look up attachments if type binary\n        if (p.type === PacketType.BINARY_EVENT ||\n            p.type === PacketType.BINARY_ACK) {\n            const start = i + 1;\n            while (str.charAt(++i) !== \"-\" && i != str.length) { }\n            const buf = str.substring(start, i);\n            if (buf != Number(buf) || str.charAt(i) !== \"-\") {\n                throw new Error(\"Illegal attachments\");\n            }\n            p.attachments = Number(buf);\n        }\n        // look up namespace (if any)\n        if (\"/\" === str.charAt(i + 1)) {\n            const start = i + 1;\n            while (++i) {\n                const c = str.charAt(i);\n                if (\",\" === c)\n                    break;\n                if (i === str.length)\n                    break;\n            }\n            p.nsp = str.substring(start, i);\n        }\n        else {\n            p.nsp = \"/\";\n        }\n        // look up id\n        const next = str.charAt(i + 1);\n        if (\"\" !== next && Number(next) == next) {\n            const start = i + 1;\n            while (++i) {\n                const c = str.charAt(i);\n                if (null == c || Number(c) != c) {\n                    --i;\n                    break;\n                }\n                if (i === str.length)\n                    break;\n            }\n            p.id = Number(str.substring(start, i + 1));\n        }\n        // look up json data\n        if (str.charAt(++i)) {\n            const payload = tryParse(str.substr(i));\n            if (Decoder.isPayloadValid(p.type, payload)) {\n                p.data = payload;\n            }\n            else {\n                throw new Error(\"invalid payload\");\n            }\n        }\n        debug(\"decoded %s as %j\", str, p);\n        return p;\n    }\n    static isPayloadValid(type, payload) {\n        switch (type) {\n            case PacketType.CONNECT:\n                return typeof payload === \"object\";\n            case PacketType.DISCONNECT:\n                return payload === undefined;\n            case PacketType.CONNECT_ERROR:\n                return typeof payload === \"string\" || typeof payload === \"object\";\n            case PacketType.EVENT:\n            case PacketType.BINARY_EVENT:\n                return Array.isArray(payload) && payload.length > 0;\n            case PacketType.ACK:\n            case PacketType.BINARY_ACK:\n                return Array.isArray(payload);\n        }\n    }\n    /**\n     * Deallocates a parser's resources\n     */\n    destroy() {\n        if (this.reconstructor) {\n            this.reconstructor.finishedReconstruction();\n        }\n    }\n}\nexports.Decoder = Decoder;\nfunction tryParse(str) {\n    try {\n        return JSON.parse(str);\n    }\n    catch (e) {\n        return false;\n    }\n}\n/**\n * A manager of a binary event's 'buffer sequence'. Should\n * be constructed whenever a packet of type BINARY_EVENT is\n * decoded.\n *\n * @param {Object} packet\n * @return {BinaryReconstructor} initialized reconstructor\n */\nclass BinaryReconstructor {\n    constructor(packet) {\n        this.packet = packet;\n        this.buffers = [];\n        this.reconPack = packet;\n    }\n    /**\n     * Method to be called when binary data received from connection\n     * after a BINARY_EVENT packet.\n     *\n     * @param {Buffer | ArrayBuffer} binData - the raw binary data received\n     * @return {null | Object} returns null if more binary data is expected or\n     *   a reconstructed packet object if all buffers have been received.\n     */\n    takeBinaryData(binData) {\n        this.buffers.push(binData);\n        if (this.buffers.length === this.reconPack.attachments) {\n            // done with buffer list\n            const packet = binary_1.reconstructPacket(this.reconPack, this.buffers);\n            this.finishedReconstruction();\n            return packet;\n        }\n        return null;\n    }\n    /**\n     * Cleans up binary packet reconstruction variables.\n     */\n    finishedReconstruction() {\n        this.reconPack = null;\n        this.buffers = [];\n    }\n}\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.hasBinary = exports.isBinary = void 0;\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\nconst isView = (obj) => {\n    return typeof ArrayBuffer.isView === \"function\"\n        ? ArrayBuffer.isView(obj)\n        : obj.buffer instanceof ArrayBuffer;\n};\nconst toString = Object.prototype.toString;\nconst withNativeBlob = typeof Blob === \"function\" ||\n    (typeof Blob !== \"undefined\" &&\n        toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeFile = typeof File === \"function\" ||\n    (typeof File !== \"undefined\" &&\n        toString.call(File) === \"[object FileConstructor]\");\n/**\n * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.\n *\n * @private\n */\nfunction isBinary(obj) {\n    return ((withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj))) ||\n        (withNativeBlob && obj instanceof Blob) ||\n        (withNativeFile && obj instanceof File));\n}\nexports.isBinary = isBinary;\nfunction hasBinary(obj, toJSON) {\n    if (!obj || typeof obj !== \"object\") {\n        return false;\n    }\n    if (Array.isArray(obj)) {\n        for (let i = 0, l = obj.length; i < l; i++) {\n            if (hasBinary(obj[i])) {\n                return true;\n            }\n        }\n        return false;\n    }\n    if (isBinary(obj)) {\n        return true;\n    }\n    if (obj.toJSON &&\n        typeof obj.toJSON === \"function\" &&\n        arguments.length === 1) {\n        return hasBinary(obj.toJSON(), true);\n    }\n    for (const key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {\n            return true;\n        }\n    }\n    return false;\n}\nexports.hasBinary = hasBinary;\n","'use strict';\n\nvar alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')\n  , length = 64\n  , map = {}\n  , seed = 0\n  , i = 0\n  , prev;\n\n/**\n * Return a string representing the specified number.\n *\n * @param {Number} num The number to convert.\n * @returns {String} The string representation of the number.\n * @api public\n */\nfunction encode(num) {\n  var encoded = '';\n\n  do {\n    encoded = alphabet[num % length] + encoded;\n    num = Math.floor(num / length);\n  } while (num > 0);\n\n  return encoded;\n}\n\n/**\n * Return the integer value specified by the given string.\n *\n * @param {String} str The string to convert.\n * @returns {Number} The integer value represented by the string.\n * @api public\n */\nfunction decode(str) {\n  var decoded = 0;\n\n  for (i = 0; i < str.length; i++) {\n    decoded = decoded * length + map[str.charAt(i)];\n  }\n\n  return decoded;\n}\n\n/**\n * Yeast: A tiny growing id generator.\n *\n * @returns {String} A unique id.\n * @api public\n */\nfunction yeast() {\n  var now = encode(+new Date());\n\n  if (now !== prev) return seed = 0, prev = now;\n  return now +'.'+ encode(seed++);\n}\n\n//\n// Map each character to its index.\n//\nfor (; i < length; i++) map[alphabet[i]] = i;\n\n//\n// Expose the `yeast`, `encode` and `decode` functions.\n//\nyeast.encode = encode;\nyeast.decode = decode;\nmodule.exports = yeast;\n"],"sourceRoot":""}
\ No newline at end of file
diff --git a/client/lib/socket.io.min.js b/client/lib/socket.io.min.js
new file mode 100644
index 0000000..bc1643f
--- /dev/null
+++ b/client/lib/socket.io.min.js
@@ -0,0 +1,7 @@
+/*!
+ * Socket.IO v4.1.3
+ * (c) 2014-2021 Guillermo Rauch
+ * Released under the MIT License.
+ */
+!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.io=e():t.io=e()}(self,(function(){return function(t){var e={};function n(r){if(e[r])return e[r].exports;var o=e[r]={i:r,l:!1,exports:{}};return t[r].call(o.exports,o,o.exports,n),o.l=!0,o.exports}return n.m=t,n.c=e,n.d=function(t,e,r){n.o(t,e)||Object.defineProperty(t,e,{enumerable:!0,get:r})},n.r=function(t){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(t,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(t,"__esModule",{value:!0})},n.t=function(t,e){if(1&e&&(t=n(t)),8&e)return t;if(4&e&&"object"==typeof t&&t&&t.__esModule)return t;var r=Object.create(null);if(n.r(r),Object.defineProperty(r,"default",{enumerable:!0,value:t}),2&e&&"string"!=typeof t)for(var o in t)n.d(r,o,function(e){return t[e]}.bind(null,o));return r},n.n=function(t){var e=t&&t.__esModule?function(){return 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\t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 18);\n","const encodePacket = require(\"./encodePacket\");\nconst decodePacket = require(\"./decodePacket\");\n\nconst SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text\n\nconst encodePayload = (packets, callback) => {\n  // some packets may be added to the array while encoding, so the initial length must be saved\n  const length = packets.length;\n  const encodedPackets = new Array(length);\n  let count = 0;\n\n  packets.forEach((packet, i) => {\n    // force base64 encoding for binary packets\n    encodePacket(packet, false, encodedPacket => {\n      encodedPackets[i] = encodedPacket;\n      if (++count === length) {\n        callback(encodedPackets.join(SEPARATOR));\n      }\n    });\n  });\n};\n\nconst decodePayload = (encodedPayload, binaryType) => {\n  const encodedPackets = encodedPayload.split(SEPARATOR);\n  const packets = [];\n  for (let i = 0; i < encodedPackets.length; i++) {\n    const decodedPacket = decodePacket(encodedPackets[i], binaryType);\n    packets.push(decodedPacket);\n    if (decodedPacket.type === \"error\") {\n      break;\n    }\n  }\n  return packets;\n};\n\nmodule.exports = {\n  protocol: 4,\n  encodePacket,\n  encodePayload,\n  decodePacket,\n  decodePayload\n};\n","\r\n/**\r\n * Expose `Emitter`.\r\n */\r\n\r\nif (typeof module !== 'undefined') {\r\n  module.exports = Emitter;\r\n}\r\n\r\n/**\r\n * Initialize a new `Emitter`.\r\n *\r\n * @api public\r\n */\r\n\r\nfunction Emitter(obj) {\r\n  if (obj) return mixin(obj);\r\n};\r\n\r\n/**\r\n * Mixin the emitter properties.\r\n *\r\n * @param {Object} obj\r\n * @return {Object}\r\n * @api private\r\n */\r\n\r\nfunction mixin(obj) {\r\n  for (var key in Emitter.prototype) {\r\n    obj[key] = Emitter.prototype[key];\r\n  }\r\n  return obj;\r\n}\r\n\r\n/**\r\n * Listen on the given `event` with `fn`.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.on =\r\nEmitter.prototype.addEventListener = function(event, fn){\r\n  this._callbacks = this._callbacks || {};\r\n  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])\r\n    .push(fn);\r\n  return this;\r\n};\r\n\r\n/**\r\n * Adds an `event` listener that will be invoked a single\r\n * time then automatically removed.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.once = function(event, fn){\r\n  function on() {\r\n    this.off(event, on);\r\n    fn.apply(this, arguments);\r\n  }\r\n\r\n  on.fn = fn;\r\n  this.on(event, on);\r\n  return this;\r\n};\r\n\r\n/**\r\n * Remove the given callback for `event` or all\r\n * registered callbacks.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.off =\r\nEmitter.prototype.removeListener =\r\nEmitter.prototype.removeAllListeners =\r\nEmitter.prototype.removeEventListener = function(event, fn){\r\n  this._callbacks = this._callbacks || {};\r\n\r\n  // all\r\n  if (0 == arguments.length) {\r\n    this._callbacks = {};\r\n    return this;\r\n  }\r\n\r\n  // specific event\r\n  var callbacks = this._callbacks['$' + event];\r\n  if (!callbacks) return this;\r\n\r\n  // remove all handlers\r\n  if (1 == arguments.length) {\r\n    delete this._callbacks['$' + event];\r\n    return this;\r\n  }\r\n\r\n  // remove specific handler\r\n  var cb;\r\n  for (var i = 0; i < callbacks.length; i++) {\r\n    cb = callbacks[i];\r\n    if (cb === fn || cb.fn === fn) {\r\n      callbacks.splice(i, 1);\r\n      break;\r\n    }\r\n  }\r\n\r\n  // Remove event specific arrays for event types that no\r\n  // one is subscribed for to avoid memory leak.\r\n  if (callbacks.length === 0) {\r\n    delete this._callbacks['$' + event];\r\n  }\r\n\r\n  return this;\r\n};\r\n\r\n/**\r\n * Emit `event` with the given args.\r\n *\r\n * @param {String} event\r\n * @param {Mixed} ...\r\n * @return {Emitter}\r\n */\r\n\r\nEmitter.prototype.emit = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n\r\n  var args = new Array(arguments.length - 1)\r\n    , callbacks = this._callbacks['$' + event];\r\n\r\n  for (var i = 1; i < arguments.length; i++) {\r\n    args[i - 1] = arguments[i];\r\n  }\r\n\r\n  if (callbacks) {\r\n    callbacks = callbacks.slice(0);\r\n    for (var i = 0, len = callbacks.length; i < len; ++i) {\r\n      callbacks[i].apply(this, args);\r\n    }\r\n  }\r\n\r\n  return this;\r\n};\r\n\r\n/**\r\n * Return array of callbacks for `event`.\r\n *\r\n * @param {String} event\r\n * @return {Array}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.listeners = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n  return this._callbacks['$' + event] || [];\r\n};\r\n\r\n/**\r\n * Check if this emitter has `event` handlers.\r\n *\r\n * @param {String} event\r\n * @return {Boolean}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.hasListeners = function(event){\r\n  return !! this.listeners(event).length;\r\n};\r\n","module.exports = (() => {\n  if (typeof self !== \"undefined\") {\n    return self;\n  } else if (typeof window !== \"undefined\") {\n    return window;\n  } else {\n    return Function(\"return this\")();\n  }\n})();\n","const parser = require(\"engine.io-parser\");\nconst Emitter = require(\"component-emitter\");\n\n\n\nclass Transport extends Emitter {\n  /**\n   * Transport abstract constructor.\n   *\n   * @param {Object} options.\n   * @api private\n   */\n  constructor(opts) {\n    super();\n\n    this.opts = opts;\n    this.query = opts.query;\n    this.readyState = \"\";\n    this.socket = opts.socket;\n  }\n\n  /**\n   * Emits an error.\n   *\n   * @param {String} str\n   * @return {Transport} for chaining\n   * @api public\n   */\n  onError(msg, desc) {\n    const err = new Error(msg);\n    err.type = \"TransportError\";\n    err.description = desc;\n    this.emit(\"error\", err);\n    return this;\n  }\n\n  /**\n   * Opens the transport.\n   *\n   * @api public\n   */\n  open() {\n    if (\"closed\" === this.readyState || \"\" === this.readyState) {\n      this.readyState = \"opening\";\n      this.doOpen();\n    }\n\n    return this;\n  }\n\n  /**\n   * Closes the transport.\n   *\n   * @api private\n   */\n  close() {\n    if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n      this.doClose();\n      this.onClose();\n    }\n\n    return this;\n  }\n\n  /**\n   * Sends multiple packets.\n   *\n   * @param {Array} packets\n   * @api private\n   */\n  send(packets) {\n    if (\"open\" === this.readyState) {\n      this.write(packets);\n    } else {\n      // this might happen if the transport was silently closed in the beforeunload event handler\n\n\n    }\n  }\n\n  /**\n   * Called upon open\n   *\n   * @api private\n   */\n  onOpen() {\n    this.readyState = \"open\";\n    this.writable = true;\n    this.emit(\"open\");\n  }\n\n  /**\n   * Called with data.\n   *\n   * @param {String} data\n   * @api private\n   */\n  onData(data) {\n    const packet = parser.decodePacket(data, this.socket.binaryType);\n    this.onPacket(packet);\n  }\n\n  /**\n   * Called with a decoded packet.\n   */\n  onPacket(packet) {\n    this.emit(\"packet\", packet);\n  }\n\n  /**\n   * Called upon close.\n   *\n   * @api private\n   */\n  onClose() {\n    this.readyState = \"closed\";\n    this.emit(\"close\");\n  }\n}\n\nmodule.exports = Transport;\n","/**\n * Compiles a querystring\n * Returns string representation of the object\n *\n * @param {Object}\n * @api private\n */\n\nexports.encode = function (obj) {\n  var str = '';\n\n  for (var i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      if (str.length) str += '&';\n      str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);\n    }\n  }\n\n  return str;\n};\n\n/**\n * Parses a simple querystring into an object\n *\n * @param {String} qs\n * @api private\n */\n\nexports.decode = function(qs){\n  var qry = {};\n  var pairs = qs.split('&');\n  for (var i = 0, l = pairs.length; i < l; i++) {\n    var pair = pairs[i].split('=');\n    qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);\n  }\n  return qry;\n};\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Decoder = exports.Encoder = exports.PacketType = exports.protocol = void 0;\nconst Emitter = require(\"component-emitter\");\nconst binary_1 = require(\"./binary\");\nconst is_binary_1 = require(\"./is-binary\");\n\n\n/**\n * Protocol version.\n *\n * @public\n */\nexports.protocol = 5;\nvar PacketType;\n(function (PacketType) {\n    PacketType[PacketType[\"CONNECT\"] = 0] = \"CONNECT\";\n    PacketType[PacketType[\"DISCONNECT\"] = 1] = \"DISCONNECT\";\n    PacketType[PacketType[\"EVENT\"] = 2] = \"EVENT\";\n    PacketType[PacketType[\"ACK\"] = 3] = \"ACK\";\n    PacketType[PacketType[\"CONNECT_ERROR\"] = 4] = \"CONNECT_ERROR\";\n    PacketType[PacketType[\"BINARY_EVENT\"] = 5] = \"BINARY_EVENT\";\n    PacketType[PacketType[\"BINARY_ACK\"] = 6] = \"BINARY_ACK\";\n})(PacketType = exports.PacketType || (exports.PacketType = {}));\n/**\n * A socket.io Encoder instance\n */\nclass Encoder {\n    /**\n     * Encode a packet as a single string if non-binary, or as a\n     * buffer sequence, depending on packet type.\n     *\n     * @param {Object} obj - packet object\n     */\n    encode(obj) {\n\n\n        if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {\n            if (is_binary_1.hasBinary(obj)) {\n                obj.type =\n                    obj.type === PacketType.EVENT\n                        ? PacketType.BINARY_EVENT\n                        : PacketType.BINARY_ACK;\n                return this.encodeAsBinary(obj);\n            }\n        }\n        return [this.encodeAsString(obj)];\n    }\n    /**\n     * Encode packet as string.\n     */\n    encodeAsString(obj) {\n        // first is type\n        let str = \"\" + obj.type;\n        // attachments if we have them\n        if (obj.type === PacketType.BINARY_EVENT ||\n            obj.type === PacketType.BINARY_ACK) {\n            str += obj.attachments + \"-\";\n        }\n        // if we have a namespace other than `/`\n        // we append it followed by a comma `,`\n        if (obj.nsp && \"/\" !== obj.nsp) {\n            str += obj.nsp + \",\";\n        }\n        // immediately followed by the id\n        if (null != obj.id) {\n            str += obj.id;\n        }\n        // json data\n        if (null != obj.data) {\n            str += JSON.stringify(obj.data);\n        }\n\n\n        return str;\n    }\n    /**\n     * Encode packet as 'buffer sequence' by removing blobs, and\n     * deconstructing packet into object with placeholders and\n     * a list of buffers.\n     */\n    encodeAsBinary(obj) {\n        const deconstruction = binary_1.deconstructPacket(obj);\n        const pack = this.encodeAsString(deconstruction.packet);\n        const buffers = deconstruction.buffers;\n        buffers.unshift(pack); // add packet info to beginning of data list\n        return buffers; // write all the buffers\n    }\n}\nexports.Encoder = Encoder;\n/**\n * A socket.io Decoder instance\n *\n * @return {Object} decoder\n */\nclass Decoder extends Emitter {\n    constructor() {\n        super();\n    }\n    /**\n     * Decodes an encoded packet string into packet JSON.\n     *\n     * @param {String} obj - encoded packet\n     */\n    add(obj) {\n        let packet;\n        if (typeof obj === \"string\") {\n            packet = this.decodeString(obj);\n            if (packet.type === PacketType.BINARY_EVENT ||\n                packet.type === PacketType.BINARY_ACK) {\n                // binary packet's json\n                this.reconstructor = new BinaryReconstructor(packet);\n                // no attachments, labeled binary but no binary data to follow\n                if (packet.attachments === 0) {\n                    super.emit(\"decoded\", packet);\n                }\n            }\n            else {\n                // non-binary full packet\n                super.emit(\"decoded\", packet);\n            }\n        }\n        else if (is_binary_1.isBinary(obj) || obj.base64) {\n            // raw binary data\n            if (!this.reconstructor) {\n                throw new Error(\"got binary data when not reconstructing a packet\");\n            }\n            else {\n                packet = this.reconstructor.takeBinaryData(obj);\n                if (packet) {\n                    // received final buffer\n                    this.reconstructor = null;\n                    super.emit(\"decoded\", packet);\n                }\n            }\n        }\n        else {\n            throw new Error(\"Unknown type: \" + obj);\n        }\n    }\n    /**\n     * Decode a packet String (JSON data)\n     *\n     * @param {String} str\n     * @return {Object} packet\n     */\n    decodeString(str) {\n        let i = 0;\n        // look up type\n        const p = {\n            type: Number(str.charAt(0)),\n        };\n        if (PacketType[p.type] === undefined) {\n            throw new Error(\"unknown packet type \" + p.type);\n        }\n        // look up attachments if type binary\n        if (p.type === PacketType.BINARY_EVENT ||\n            p.type === PacketType.BINARY_ACK) {\n            const start = i + 1;\n            while (str.charAt(++i) !== \"-\" && i != str.length) { }\n            const buf = str.substring(start, i);\n            if (buf != Number(buf) || str.charAt(i) !== \"-\") {\n                throw new Error(\"Illegal attachments\");\n            }\n            p.attachments = Number(buf);\n        }\n        // look up namespace (if any)\n        if (\"/\" === str.charAt(i + 1)) {\n            const start = i + 1;\n            while (++i) {\n                const c = str.charAt(i);\n                if (\",\" === c)\n                    break;\n                if (i === str.length)\n                    break;\n            }\n            p.nsp = str.substring(start, i);\n        }\n        else {\n            p.nsp = \"/\";\n        }\n        // look up id\n        const next = str.charAt(i + 1);\n        if (\"\" !== next && Number(next) == next) {\n            const start = i + 1;\n            while (++i) {\n                const c = str.charAt(i);\n                if (null == c || Number(c) != c) {\n                    --i;\n                    break;\n                }\n                if (i === str.length)\n                    break;\n            }\n            p.id = Number(str.substring(start, i + 1));\n        }\n        // look up json data\n        if (str.charAt(++i)) {\n            const payload = tryParse(str.substr(i));\n            if (Decoder.isPayloadValid(p.type, payload)) {\n                p.data = payload;\n            }\n            else {\n                throw new Error(\"invalid payload\");\n            }\n        }\n\n\n        return p;\n    }\n    static isPayloadValid(type, payload) {\n        switch (type) {\n            case PacketType.CONNECT:\n                return typeof payload === \"object\";\n            case PacketType.DISCONNECT:\n                return payload === undefined;\n            case PacketType.CONNECT_ERROR:\n                return typeof payload === \"string\" || typeof payload === \"object\";\n            case PacketType.EVENT:\n            case PacketType.BINARY_EVENT:\n                return Array.isArray(payload) && payload.length > 0;\n            case PacketType.ACK:\n            case PacketType.BINARY_ACK:\n                return Array.isArray(payload);\n        }\n    }\n    /**\n     * Deallocates a parser's resources\n     */\n    destroy() {\n        if (this.reconstructor) {\n            this.reconstructor.finishedReconstruction();\n        }\n    }\n}\nexports.Decoder = Decoder;\nfunction tryParse(str) {\n    try {\n        return JSON.parse(str);\n    }\n    catch (e) {\n        return false;\n    }\n}\n/**\n * A manager of a binary event's 'buffer sequence'. Should\n * be constructed whenever a packet of type BINARY_EVENT is\n * decoded.\n *\n * @param {Object} packet\n * @return {BinaryReconstructor} initialized reconstructor\n */\nclass BinaryReconstructor {\n    constructor(packet) {\n        this.packet = packet;\n        this.buffers = [];\n        this.reconPack = packet;\n    }\n    /**\n     * Method to be called when binary data received from connection\n     * after a BINARY_EVENT packet.\n     *\n     * @param {Buffer | ArrayBuffer} binData - the raw binary data received\n     * @return {null | Object} returns null if more binary data is expected or\n     *   a reconstructed packet object if all buffers have been received.\n     */\n    takeBinaryData(binData) {\n        this.buffers.push(binData);\n        if (this.buffers.length === this.reconPack.attachments) {\n            // done with buffer list\n            const packet = binary_1.reconstructPacket(this.reconPack, this.buffers);\n            this.finishedReconstruction();\n            return packet;\n        }\n        return null;\n    }\n    /**\n     * Cleans up binary packet reconstruction variables.\n     */\n    finishedReconstruction() {\n        this.reconPack = null;\n        this.buffers = [];\n    }\n}\n","/**\n * Parses an URI\n *\n * @author Steven Levithan <stevenlevithan.com> (MIT license)\n * @api private\n */\n\nvar re = /^(?:(?![^:@]+:[^:@\\/]*@)(http|https|ws|wss):\\/\\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\\/?#]*)(?::(\\d*))?)(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))(?:\\?([^#]*))?(?:#(.*))?)/;\n\nvar parts = [\n    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'\n];\n\nmodule.exports = function parseuri(str) {\n    var src = str,\n        b = str.indexOf('['),\n        e = str.indexOf(']');\n\n    if (b != -1 && e != -1) {\n        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);\n    }\n\n    var m = re.exec(str || ''),\n        uri = {},\n        i = 14;\n\n    while (i--) {\n        uri[parts[i]] = m[i] || '';\n    }\n\n    if (b != -1 && e != -1) {\n        uri.source = src;\n        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');\n        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');\n        uri.ipv6uri = true;\n    }\n\n    uri.pathNames = pathNames(uri, uri['path']);\n    uri.queryKey = queryKey(uri, uri['query']);\n\n    return uri;\n};\n\nfunction pathNames(obj, path) {\n    var regx = /\\/{2,9}/g,\n        names = path.replace(regx, \"/\").split(\"/\");\n\n    if (path.substr(0, 1) == '/' || path.length === 0) {\n        names.splice(0, 1);\n    }\n    if (path.substr(path.length - 1, 1) == '/') {\n        names.splice(names.length - 1, 1);\n    }\n\n    return names;\n}\n\nfunction queryKey(uri, query) {\n    var data = {};\n\n    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {\n        if ($1) {\n            data[$1] = $2;\n        }\n    });\n\n    return data;\n}\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Manager = void 0;\nconst eio = require(\"engine.io-client\");\nconst socket_1 = require(\"./socket\");\nconst parser = require(\"socket.io-parser\");\nconst on_1 = require(\"./on\");\nconst Backoff = require(\"backo2\");\nconst typed_events_1 = require(\"./typed-events\");\n\n\nclass Manager extends typed_events_1.StrictEventEmitter {\n    constructor(uri, opts) {\n        super();\n        this.nsps = {};\n        this.subs = [];\n        if (uri && \"object\" === typeof uri) {\n            opts = uri;\n            uri = undefined;\n        }\n        opts = opts || {};\n        opts.path = opts.path || \"/socket.io\";\n        this.opts = opts;\n        this.reconnection(opts.reconnection !== false);\n        this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);\n        this.reconnectionDelay(opts.reconnectionDelay || 1000);\n        this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);\n        this.randomizationFactor(opts.randomizationFactor || 0.5);\n        this.backoff = new Backoff({\n            min: this.reconnectionDelay(),\n            max: this.reconnectionDelayMax(),\n            jitter: this.randomizationFactor(),\n        });\n        this.timeout(null == opts.timeout ? 20000 : opts.timeout);\n        this._readyState = \"closed\";\n        this.uri = uri;\n        const _parser = opts.parser || parser;\n        this.encoder = new _parser.Encoder();\n        this.decoder = new _parser.Decoder();\n        this._autoConnect = opts.autoConnect !== false;\n        if (this._autoConnect)\n            this.open();\n    }\n    reconnection(v) {\n        if (!arguments.length)\n            return this._reconnection;\n        this._reconnection = !!v;\n        return this;\n    }\n    reconnectionAttempts(v) {\n        if (v === undefined)\n            return this._reconnectionAttempts;\n        this._reconnectionAttempts = v;\n        return this;\n    }\n    reconnectionDelay(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelay;\n        this._reconnectionDelay = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMin(v);\n        return this;\n    }\n    randomizationFactor(v) {\n        var _a;\n        if (v === undefined)\n            return this._randomizationFactor;\n        this._randomizationFactor = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);\n        return this;\n    }\n    reconnectionDelayMax(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelayMax;\n        this._reconnectionDelayMax = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);\n        return this;\n    }\n    timeout(v) {\n        if (!arguments.length)\n            return this._timeout;\n        this._timeout = v;\n        return this;\n    }\n    /**\n     * Starts trying to reconnect if reconnection is enabled and we have not\n     * started reconnecting yet\n     *\n     * @private\n     */\n    maybeReconnectOnOpen() {\n        // Only try to reconnect if it's the first time we're connecting\n        if (!this._reconnecting &&\n            this._reconnection &&\n            this.backoff.attempts === 0) {\n            // keeps reconnection from firing twice for the same reconnection loop\n            this.reconnect();\n        }\n    }\n    /**\n     * Sets the current transport `socket`.\n     *\n     * @param {Function} fn - optional, callback\n     * @return self\n     * @public\n     */\n    open(fn) {\n\n\n        if (~this._readyState.indexOf(\"open\"))\n            return this;\n\n\n        this.engine = eio(this.uri, this.opts);\n        const socket = this.engine;\n        const self = this;\n        this._readyState = \"opening\";\n        this.skipReconnect = false;\n        // emit `open`\n        const openSubDestroy = on_1.on(socket, \"open\", function () {\n            self.onopen();\n            fn && fn();\n        });\n        // emit `error`\n        const errorSub = on_1.on(socket, \"error\", (err) => {\n\n\n            self.cleanup();\n            self._readyState = \"closed\";\n            this.emitReserved(\"error\", err);\n            if (fn) {\n                fn(err);\n            }\n            else {\n                // Only do this if there is no fn to handle the error\n                self.maybeReconnectOnOpen();\n            }\n        });\n        if (false !== this._timeout) {\n            const timeout = this._timeout;\n\n\n            if (timeout === 0) {\n                openSubDestroy(); // prevents a race condition with the 'open' event\n            }\n            // set timer\n            const timer = setTimeout(() => {\n\n\n                openSubDestroy();\n                socket.close();\n                socket.emit(\"error\", new Error(\"timeout\"));\n            }, timeout);\n            if (this.opts.autoUnref) {\n                timer.unref();\n            }\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n        this.subs.push(openSubDestroy);\n        this.subs.push(errorSub);\n        return this;\n    }\n    /**\n     * Alias for open()\n     *\n     * @return self\n     * @public\n     */\n    connect(fn) {\n        return this.open(fn);\n    }\n    /**\n     * Called upon transport open.\n     *\n     * @private\n     */\n    onopen() {\n\n\n        // clear old subs\n        this.cleanup();\n        // mark as open\n        this._readyState = \"open\";\n        this.emitReserved(\"open\");\n        // add new subs\n        const socket = this.engine;\n        this.subs.push(on_1.on(socket, \"ping\", this.onping.bind(this)), on_1.on(socket, \"data\", this.ondata.bind(this)), on_1.on(socket, \"error\", this.onerror.bind(this)), on_1.on(socket, \"close\", this.onclose.bind(this)), on_1.on(this.decoder, \"decoded\", this.ondecoded.bind(this)));\n    }\n    /**\n     * Called upon a ping.\n     *\n     * @private\n     */\n    onping() {\n        this.emitReserved(\"ping\");\n    }\n    /**\n     * Called with data.\n     *\n     * @private\n     */\n    ondata(data) {\n        this.decoder.add(data);\n    }\n    /**\n     * Called when parser fully decodes a packet.\n     *\n     * @private\n     */\n    ondecoded(packet) {\n        this.emitReserved(\"packet\", packet);\n    }\n    /**\n     * Called upon socket error.\n     *\n     * @private\n     */\n    onerror(err) {\n\n\n        this.emitReserved(\"error\", err);\n    }\n    /**\n     * Creates a new socket for the given `nsp`.\n     *\n     * @return {Socket}\n     * @public\n     */\n    socket(nsp, opts) {\n        let socket = this.nsps[nsp];\n        if (!socket) {\n            socket = new socket_1.Socket(this, nsp, opts);\n            this.nsps[nsp] = socket;\n        }\n        return socket;\n    }\n    /**\n     * Called upon a socket close.\n     *\n     * @param socket\n     * @private\n     */\n    _destroy(socket) {\n        const nsps = Object.keys(this.nsps);\n        for (const nsp of nsps) {\n            const socket = this.nsps[nsp];\n            if (socket.active) {\n\n\n                return;\n            }\n        }\n        this._close();\n    }\n    /**\n     * Writes a packet.\n     *\n     * @param packet\n     * @private\n     */\n    _packet(packet) {\n\n\n        const encodedPackets = this.encoder.encode(packet);\n        for (let i = 0; i < encodedPackets.length; i++) {\n            this.engine.write(encodedPackets[i], packet.options);\n        }\n    }\n    /**\n     * Clean up transport subscriptions and packet buffer.\n     *\n     * @private\n     */\n    cleanup() {\n\n\n        this.subs.forEach((subDestroy) => subDestroy());\n        this.subs.length = 0;\n        this.decoder.destroy();\n    }\n    /**\n     * Close the current socket.\n     *\n     * @private\n     */\n    _close() {\n\n\n        this.skipReconnect = true;\n        this._reconnecting = false;\n        if (\"opening\" === this._readyState) {\n            // `onclose` will not fire because\n            // an open event never happened\n            this.cleanup();\n        }\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        if (this.engine)\n            this.engine.close();\n    }\n    /**\n     * Alias for close()\n     *\n     * @private\n     */\n    disconnect() {\n        return this._close();\n    }\n    /**\n     * Called upon engine close.\n     *\n     * @private\n     */\n    onclose(reason) {\n\n\n        this.cleanup();\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        this.emitReserved(\"close\", reason);\n        if (this._reconnection && !this.skipReconnect) {\n            this.reconnect();\n        }\n    }\n    /**\n     * Attempt a reconnection.\n     *\n     * @private\n     */\n    reconnect() {\n        if (this._reconnecting || this.skipReconnect)\n            return this;\n        const self = this;\n        if (this.backoff.attempts >= this._reconnectionAttempts) {\n\n\n            this.backoff.reset();\n            this.emitReserved(\"reconnect_failed\");\n            this._reconnecting = false;\n        }\n        else {\n            const delay = this.backoff.duration();\n\n\n            this._reconnecting = true;\n            const timer = setTimeout(() => {\n                if (self.skipReconnect)\n                    return;\n\n\n                this.emitReserved(\"reconnect_attempt\", self.backoff.attempts);\n                // check again for the case socket closed in above events\n                if (self.skipReconnect)\n                    return;\n                self.open((err) => {\n                    if (err) {\n\n\n                        self._reconnecting = false;\n                        self.reconnect();\n                        this.emitReserved(\"reconnect_error\", err);\n                    }\n                    else {\n\n\n                        self.onreconnect();\n                    }\n                });\n            }, delay);\n            if (this.opts.autoUnref) {\n                timer.unref();\n            }\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n    }\n    /**\n     * Called upon successful reconnect.\n     *\n     * @private\n     */\n    onreconnect() {\n        const attempt = this.backoff.attempts;\n        this._reconnecting = false;\n        this.backoff.reset();\n        this.emitReserved(\"reconnect\", attempt);\n    }\n}\nexports.Manager = Manager;\n","const XMLHttpRequest = require(\"../../contrib/xmlhttprequest-ssl/XMLHttpRequest\");\nconst XHR = require(\"./polling-xhr\");\nconst JSONP = require(\"./polling-jsonp\");\nconst websocket = require(\"./websocket\");\n\nexports.polling = polling;\nexports.websocket = websocket;\n\n/**\n * Polling transport polymorphic constructor.\n * Decides on xhr vs jsonp based on feature detection.\n *\n * @api private\n */\n\nfunction polling(opts) {\n  let xhr;\n  let xd = false;\n  let xs = false;\n  const jsonp = false !== opts.jsonp;\n\n  if (typeof location !== \"undefined\") {\n    const isSSL = \"https:\" === location.protocol;\n    let port = location.port;\n\n    // some user agents have empty `location.port`\n    if (!port) {\n      port = isSSL ? 443 : 80;\n    }\n\n    xd = opts.hostname !== location.hostname || port !== opts.port;\n    xs = opts.secure !== isSSL;\n  }\n\n  opts.xdomain = xd;\n  opts.xscheme = xs;\n  xhr = new XMLHttpRequest(opts);\n\n  if (\"open\" in xhr && !opts.forceJSONP) {\n    return new XHR(opts);\n  } else {\n    if (!jsonp) throw new Error(\"JSONP disabled\");\n    return new JSONP(opts);\n  }\n}\n","// browser shim for xmlhttprequest module\n\nconst hasCORS = require(\"has-cors\");\nconst globalThis = require(\"./globalThis\");\n\nmodule.exports = function(opts) {\n  const xdomain = opts.xdomain;\n\n  // scheme must be same when usign XDomainRequest\n  // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx\n  const xscheme = opts.xscheme;\n\n  // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.\n  // https://github.com/Automattic/engine.io-client/pull/217\n  const enablesXDR = opts.enablesXDR;\n\n  // XMLHttpRequest can be disabled on IE\n  try {\n    if (\"undefined\" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {\n      return new XMLHttpRequest();\n    }\n  } catch (e) {}\n\n  // Use XDomainRequest for IE8 if enablesXDR is true\n  // because loading bar keeps flashing when using jsonp-polling\n  // https://github.com/yujiosaka/socke.io-ie8-loading-example\n  try {\n    if (\"undefined\" !== typeof XDomainRequest && !xscheme && enablesXDR) {\n      return new XDomainRequest();\n    }\n  } catch (e) {}\n\n  if (!xdomain) {\n    try {\n      return new globalThis[[\"Active\"].concat(\"Object\").join(\"X\")](\n        \"Microsoft.XMLHTTP\"\n      );\n    } catch (e) {}\n  }\n};\n","const Transport = require(\"../transport\");\nconst parseqs = require(\"parseqs\");\nconst parser = require(\"engine.io-parser\");\nconst yeast = require(\"yeast\");\n\n\n\n\nclass Polling extends Transport {\n  /**\n   * Transport name.\n   */\n  get name() {\n    return \"polling\";\n  }\n\n  /**\n   * Opens the socket (triggers polling). We write a PING message to determine\n   * when the transport is open.\n   *\n   * @api private\n   */\n  doOpen() {\n    this.poll();\n  }\n\n  /**\n   * Pauses polling.\n   *\n   * @param {Function} callback upon buffers are flushed and transport is paused\n   * @api private\n   */\n  pause(onPause) {\n    this.readyState = \"pausing\";\n\n    const pause = () => {\n\n\n      this.readyState = \"paused\";\n      onPause();\n    };\n\n    if (this.polling || !this.writable) {\n      let total = 0;\n\n      if (this.polling) {\n\n\n        total++;\n        this.once(\"pollComplete\", function() {\n\n\n          --total || pause();\n        });\n      }\n\n      if (!this.writable) {\n\n\n        total++;\n        this.once(\"drain\", function() {\n\n\n          --total || pause();\n        });\n      }\n    } else {\n      pause();\n    }\n  }\n\n  /**\n   * Starts polling cycle.\n   *\n   * @api public\n   */\n  poll() {\n\n\n    this.polling = true;\n    this.doPoll();\n    this.emit(\"poll\");\n  }\n\n  /**\n   * Overloads onData to detect payloads.\n   *\n   * @api private\n   */\n  onData(data) {\n\n\n    const callback = packet => {\n      // if its the first message we consider the transport open\n      if (\"opening\" === this.readyState && packet.type === \"open\") {\n        this.onOpen();\n      }\n\n      // if its a close packet, we close the ongoing requests\n      if (\"close\" === packet.type) {\n        this.onClose();\n        return false;\n      }\n\n      // otherwise bypass onData and handle the message\n      this.onPacket(packet);\n    };\n\n    // decode payload\n    parser.decodePayload(data, this.socket.binaryType).forEach(callback);\n\n    // if an event did not trigger closing\n    if (\"closed\" !== this.readyState) {\n      // if we got data we're not polling\n      this.polling = false;\n      this.emit(\"pollComplete\");\n\n      if (\"open\" === this.readyState) {\n        this.poll();\n      } else {\n\n\n      }\n    }\n  }\n\n  /**\n   * For polling, send a close packet.\n   *\n   * @api private\n   */\n  doClose() {\n    const close = () => {\n\n\n      this.write([{ type: \"close\" }]);\n    };\n\n    if (\"open\" === this.readyState) {\n\n\n      close();\n    } else {\n      // in case we're trying to close while\n      // handshaking is in progress (GH-164)\n\n\n      this.once(\"open\", close);\n    }\n  }\n\n  /**\n   * Writes a packets payload.\n   *\n   * @param {Array} data packets\n   * @param {Function} drain callback\n   * @api private\n   */\n  write(packets) {\n    this.writable = false;\n\n    parser.encodePayload(packets, data => {\n      this.doWrite(data, () => {\n        this.writable = true;\n        this.emit(\"drain\");\n      });\n    });\n  }\n\n  /**\n   * Generates uri for connection.\n   *\n   * @api private\n   */\n  uri() {\n    let query = this.query || {};\n    const schema = this.opts.secure ? \"https\" : \"http\";\n    let port = \"\";\n\n    // cache busting is forced\n    if (false !== this.opts.timestampRequests) {\n      query[this.opts.timestampParam] = yeast();\n    }\n\n    if (!this.supportsBinary && !query.sid) {\n      query.b64 = 1;\n    }\n\n    query = parseqs.encode(query);\n\n    // avoid port if default for schema\n    if (\n      this.opts.port &&\n      ((\"https\" === schema && Number(this.opts.port) !== 443) ||\n        (\"http\" === schema && Number(this.opts.port) !== 80))\n    ) {\n      port = \":\" + this.opts.port;\n    }\n\n    // prepend ? to query\n    if (query.length) {\n      query = \"?\" + query;\n    }\n\n    const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n    return (\n      schema +\n      \"://\" +\n      (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n      port +\n      this.opts.path +\n      query\n    );\n  }\n}\n\nmodule.exports = Polling;\n","const PACKET_TYPES = Object.create(null); // no Map = no polyfill\nPACKET_TYPES[\"open\"] = \"0\";\nPACKET_TYPES[\"close\"] = \"1\";\nPACKET_TYPES[\"ping\"] = \"2\";\nPACKET_TYPES[\"pong\"] = \"3\";\nPACKET_TYPES[\"message\"] = \"4\";\nPACKET_TYPES[\"upgrade\"] = \"5\";\nPACKET_TYPES[\"noop\"] = \"6\";\n\nconst PACKET_TYPES_REVERSE = Object.create(null);\nObject.keys(PACKET_TYPES).forEach(key => {\n  PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;\n});\n\nconst ERROR_PACKET = { type: \"error\", data: \"parser error\" };\n\nmodule.exports = {\n  PACKET_TYPES,\n  PACKET_TYPES_REVERSE,\n  ERROR_PACKET\n};\n","'use strict';\n\nvar alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')\n  , length = 64\n  , map = {}\n  , seed = 0\n  , i = 0\n  , prev;\n\n/**\n * Return a string representing the specified number.\n *\n * @param {Number} num The number to convert.\n * @returns {String} The string representation of the number.\n * @api public\n */\nfunction encode(num) {\n  var encoded = '';\n\n  do {\n    encoded = alphabet[num % length] + encoded;\n    num = Math.floor(num / length);\n  } while (num > 0);\n\n  return encoded;\n}\n\n/**\n * Return the integer value specified by the given string.\n *\n * @param {String} str The string to convert.\n * @returns {Number} The integer value represented by the string.\n * @api public\n */\nfunction decode(str) {\n  var decoded = 0;\n\n  for (i = 0; i < str.length; i++) {\n    decoded = decoded * length + map[str.charAt(i)];\n  }\n\n  return decoded;\n}\n\n/**\n * Yeast: A tiny growing id generator.\n *\n * @returns {String} A unique id.\n * @api public\n */\nfunction yeast() {\n  var now = encode(+new Date());\n\n  if (now !== prev) return seed = 0, prev = now;\n  return now +'.'+ encode(seed++);\n}\n\n//\n// Map each character to its index.\n//\nfor (; i < length; i++) map[alphabet[i]] = i;\n\n//\n// Expose the `yeast`, `encode` and `decode` functions.\n//\nyeast.encode = encode;\nyeast.decode = decode;\nmodule.exports = yeast;\n","module.exports.pick = (obj, ...attr) => {\n  return attr.reduce((acc, k) => {\n    if (obj.hasOwnProperty(k)) {\n      acc[k] = obj[k];\n    }\n    return acc;\n  }, {});\n};\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Socket = void 0;\nconst socket_io_parser_1 = require(\"socket.io-parser\");\nconst on_1 = require(\"./on\");\nconst typed_events_1 = require(\"./typed-events\");\n\n\n/**\n * Internal events.\n * These events can't be emitted by the user.\n */\nconst RESERVED_EVENTS = Object.freeze({\n    connect: 1,\n    connect_error: 1,\n    disconnect: 1,\n    disconnecting: 1,\n    // EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener\n    newListener: 1,\n    removeListener: 1,\n});\nclass Socket extends typed_events_1.StrictEventEmitter {\n    /**\n     * `Socket` constructor.\n     *\n     * @public\n     */\n    constructor(io, nsp, opts) {\n        super();\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.ids = 0;\n        this.acks = {};\n        this.flags = {};\n        this.io = io;\n        this.nsp = nsp;\n        this.ids = 0;\n        this.acks = {};\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.connected = false;\n        this.disconnected = true;\n        this.flags = {};\n        if (opts && opts.auth) {\n            this.auth = opts.auth;\n        }\n        if (this.io._autoConnect)\n            this.open();\n    }\n    /**\n     * Subscribe to open, close and packet events\n     *\n     * @private\n     */\n    subEvents() {\n        if (this.subs)\n            return;\n        const io = this.io;\n        this.subs = [\n            on_1.on(io, \"open\", this.onopen.bind(this)),\n            on_1.on(io, \"packet\", this.onpacket.bind(this)),\n            on_1.on(io, \"error\", this.onerror.bind(this)),\n            on_1.on(io, \"close\", this.onclose.bind(this)),\n        ];\n    }\n    /**\n     * Whether the Socket will try to reconnect when its Manager connects or reconnects\n     */\n    get active() {\n        return !!this.subs;\n    }\n    /**\n     * \"Opens\" the socket.\n     *\n     * @public\n     */\n    connect() {\n        if (this.connected)\n            return this;\n        this.subEvents();\n        if (!this.io[\"_reconnecting\"])\n            this.io.open(); // ensure open\n        if (\"open\" === this.io._readyState)\n            this.onopen();\n        return this;\n    }\n    /**\n     * Alias for connect()\n     */\n    open() {\n        return this.connect();\n    }\n    /**\n     * Sends a `message` event.\n     *\n     * @return self\n     * @public\n     */\n    send(...args) {\n        args.unshift(\"message\");\n        this.emit.apply(this, args);\n        return this;\n    }\n    /**\n     * Override `emit`.\n     * If the event is in `events`, it's emitted normally.\n     *\n     * @return self\n     * @public\n     */\n    emit(ev, ...args) {\n        if (RESERVED_EVENTS.hasOwnProperty(ev)) {\n            throw new Error('\"' + ev + '\" is a reserved event name');\n        }\n        args.unshift(ev);\n        const packet = {\n            type: socket_io_parser_1.PacketType.EVENT,\n            data: args,\n        };\n        packet.options = {};\n        packet.options.compress = this.flags.compress !== false;\n        // event ack callback\n        if (\"function\" === typeof args[args.length - 1]) {\n\n\n            this.acks[this.ids] = args.pop();\n            packet.id = this.ids++;\n        }\n        const isTransportWritable = this.io.engine &&\n            this.io.engine.transport &&\n            this.io.engine.transport.writable;\n        const discardPacket = this.flags.volatile && (!isTransportWritable || !this.connected);\n        if (discardPacket) {\n\n\n        }\n        else if (this.connected) {\n            this.packet(packet);\n        }\n        else {\n            this.sendBuffer.push(packet);\n        }\n        this.flags = {};\n        return this;\n    }\n    /**\n     * Sends a packet.\n     *\n     * @param packet\n     * @private\n     */\n    packet(packet) {\n        packet.nsp = this.nsp;\n        this.io._packet(packet);\n    }\n    /**\n     * Called upon engine `open`.\n     *\n     * @private\n     */\n    onopen() {\n\n\n        if (typeof this.auth == \"function\") {\n            this.auth((data) => {\n                this.packet({ type: socket_io_parser_1.PacketType.CONNECT, data });\n            });\n        }\n        else {\n            this.packet({ type: socket_io_parser_1.PacketType.CONNECT, data: this.auth });\n        }\n    }\n    /**\n     * Called upon engine or manager `error`.\n     *\n     * @param err\n     * @private\n     */\n    onerror(err) {\n        if (!this.connected) {\n            this.emitReserved(\"connect_error\", err);\n        }\n    }\n    /**\n     * Called upon engine `close`.\n     *\n     * @param reason\n     * @private\n     */\n    onclose(reason) {\n\n\n        this.connected = false;\n        this.disconnected = true;\n        delete this.id;\n        this.emitReserved(\"disconnect\", reason);\n    }\n    /**\n     * Called with socket packet.\n     *\n     * @param packet\n     * @private\n     */\n    onpacket(packet) {\n        const sameNamespace = packet.nsp === this.nsp;\n        if (!sameNamespace)\n            return;\n        switch (packet.type) {\n            case socket_io_parser_1.PacketType.CONNECT:\n                if (packet.data && packet.data.sid) {\n                    const id = packet.data.sid;\n                    this.onconnect(id);\n                }\n                else {\n                    this.emitReserved(\"connect_error\", new Error(\"It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)\"));\n                }\n                break;\n            case socket_io_parser_1.PacketType.EVENT:\n                this.onevent(packet);\n                break;\n            case socket_io_parser_1.PacketType.BINARY_EVENT:\n                this.onevent(packet);\n                break;\n            case socket_io_parser_1.PacketType.ACK:\n                this.onack(packet);\n                break;\n            case socket_io_parser_1.PacketType.BINARY_ACK:\n                this.onack(packet);\n                break;\n            case socket_io_parser_1.PacketType.DISCONNECT:\n                this.ondisconnect();\n                break;\n            case socket_io_parser_1.PacketType.CONNECT_ERROR:\n                const err = new Error(packet.data.message);\n                // @ts-ignore\n                err.data = packet.data.data;\n                this.emitReserved(\"connect_error\", err);\n                break;\n        }\n    }\n    /**\n     * Called upon a server event.\n     *\n     * @param packet\n     * @private\n     */\n    onevent(packet) {\n        const args = packet.data || [];\n\n\n        if (null != packet.id) {\n\n\n            args.push(this.ack(packet.id));\n        }\n        if (this.connected) {\n            this.emitEvent(args);\n        }\n        else {\n            this.receiveBuffer.push(Object.freeze(args));\n        }\n    }\n    emitEvent(args) {\n        if (this._anyListeners && this._anyListeners.length) {\n            const listeners = this._anyListeners.slice();\n            for (const listener of listeners) {\n                listener.apply(this, args);\n            }\n        }\n        super.emit.apply(this, args);\n    }\n    /**\n     * Produces an ack callback to emit with an event.\n     *\n     * @private\n     */\n    ack(id) {\n        const self = this;\n        let sent = false;\n        return function (...args) {\n            // prevent double callbacks\n            if (sent)\n                return;\n            sent = true;\n\n\n            self.packet({\n                type: socket_io_parser_1.PacketType.ACK,\n                id: id,\n                data: args,\n            });\n        };\n    }\n    /**\n     * Called upon a server acknowlegement.\n     *\n     * @param packet\n     * @private\n     */\n    onack(packet) {\n        const ack = this.acks[packet.id];\n        if (\"function\" === typeof ack) {\n\n\n            ack.apply(this, packet.data);\n            delete this.acks[packet.id];\n        }\n        else {\n\n\n        }\n    }\n    /**\n     * Called upon server connect.\n     *\n     * @private\n     */\n    onconnect(id) {\n\n\n        this.id = id;\n        this.connected = true;\n        this.disconnected = false;\n        this.emitBuffered();\n        this.emitReserved(\"connect\");\n    }\n    /**\n     * Emit buffered events (received and emitted).\n     *\n     * @private\n     */\n    emitBuffered() {\n        this.receiveBuffer.forEach((args) => this.emitEvent(args));\n        this.receiveBuffer = [];\n        this.sendBuffer.forEach((packet) => this.packet(packet));\n        this.sendBuffer = [];\n    }\n    /**\n     * Called upon server disconnect.\n     *\n     * @private\n     */\n    ondisconnect() {\n\n\n        this.destroy();\n        this.onclose(\"io server disconnect\");\n    }\n    /**\n     * Called upon forced client/server side disconnections,\n     * this method ensures the manager stops tracking us and\n     * that reconnections don't get triggered for this.\n     *\n     * @private\n     */\n    destroy() {\n        if (this.subs) {\n            // clean subscriptions to avoid reconnections\n            this.subs.forEach((subDestroy) => subDestroy());\n            this.subs = undefined;\n        }\n        this.io[\"_destroy\"](this);\n    }\n    /**\n     * Disconnects the socket manually.\n     *\n     * @return self\n     * @public\n     */\n    disconnect() {\n        if (this.connected) {\n\n\n            this.packet({ type: socket_io_parser_1.PacketType.DISCONNECT });\n        }\n        // remove socket from pool\n        this.destroy();\n        if (this.connected) {\n            // fire events\n            this.onclose(\"io client disconnect\");\n        }\n        return this;\n    }\n    /**\n     * Alias for disconnect()\n     *\n     * @return self\n     * @public\n     */\n    close() {\n        return this.disconnect();\n    }\n    /**\n     * Sets the compress flag.\n     *\n     * @param compress - if `true`, compresses the sending data\n     * @return self\n     * @public\n     */\n    compress(compress) {\n        this.flags.compress = compress;\n        return this;\n    }\n    /**\n     * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not\n     * ready to send messages.\n     *\n     * @returns self\n     * @public\n     */\n    get volatile() {\n        this.flags.volatile = true;\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback.\n     *\n     * @param listener\n     * @public\n     */\n    onAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.push(listener);\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback. The listener is added to the beginning of the listeners array.\n     *\n     * @param listener\n     * @public\n     */\n    prependAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.unshift(listener);\n        return this;\n    }\n    /**\n     * Removes the listener that will be fired when any event is emitted.\n     *\n     * @param listener\n     * @public\n     */\n    offAny(listener) {\n        if (!this._anyListeners) {\n            return this;\n        }\n        if (listener) {\n            const listeners = this._anyListeners;\n            for (let i = 0; i < listeners.length; i++) {\n                if (listener === listeners[i]) {\n                    listeners.splice(i, 1);\n                    return this;\n                }\n            }\n        }\n        else {\n            this._anyListeners = [];\n        }\n        return this;\n    }\n    /**\n     * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,\n     * e.g. to remove listeners.\n     *\n     * @public\n     */\n    listenersAny() {\n        return this._anyListeners || [];\n    }\n}\nexports.Socket = Socket;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.hasBinary = exports.isBinary = void 0;\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\nconst isView = (obj) => {\n    return typeof ArrayBuffer.isView === \"function\"\n        ? ArrayBuffer.isView(obj)\n        : obj.buffer instanceof ArrayBuffer;\n};\nconst toString = Object.prototype.toString;\nconst withNativeBlob = typeof Blob === \"function\" ||\n    (typeof Blob !== \"undefined\" &&\n        toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeFile = typeof File === \"function\" ||\n    (typeof File !== \"undefined\" &&\n        toString.call(File) === \"[object FileConstructor]\");\n/**\n * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.\n *\n * @private\n */\nfunction isBinary(obj) {\n    return ((withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj))) ||\n        (withNativeBlob && obj instanceof Blob) ||\n        (withNativeFile && obj instanceof File));\n}\nexports.isBinary = isBinary;\nfunction hasBinary(obj, toJSON) {\n    if (!obj || typeof obj !== \"object\") {\n        return false;\n    }\n    if (Array.isArray(obj)) {\n        for (let i = 0, l = obj.length; i < l; i++) {\n            if (hasBinary(obj[i])) {\n                return true;\n            }\n        }\n        return false;\n    }\n    if (isBinary(obj)) {\n        return true;\n    }\n    if (obj.toJSON &&\n        typeof obj.toJSON === \"function\" &&\n        arguments.length === 1) {\n        return hasBinary(obj.toJSON(), true);\n    }\n    for (const key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {\n            return true;\n        }\n    }\n    return false;\n}\nexports.hasBinary = hasBinary;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.on = void 0;\nfunction on(obj, ev, fn) {\n    obj.on(ev, fn);\n    return function subDestroy() {\n        obj.off(ev, fn);\n    };\n}\nexports.on = on;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.StrictEventEmitter = void 0;\nconst Emitter = require(\"component-emitter\");\n/**\n * Strictly typed version of an `EventEmitter`. A `TypedEventEmitter` takes type\n * parameters for mappings of event names to event data types, and strictly\n * types method calls to the `EventEmitter` according to these event maps.\n *\n * @typeParam ListenEvents - `EventsMap` of user-defined events that can be\n * listened to with `on` or `once`\n * @typeParam EmitEvents - `EventsMap` of user-defined events that can be\n * emitted with `emit`\n * @typeParam ReservedEvents - `EventsMap` of reserved events, that can be\n * emitted by socket.io with `emitReserved`, and can be listened to with\n * `listen`.\n */\nclass StrictEventEmitter extends Emitter {\n    /**\n     * Adds the `listener` function as an event listener for `ev`.\n     *\n     * @param ev Name of the event\n     * @param listener Callback function\n     */\n    on(ev, listener) {\n        super.on(ev, listener);\n        return this;\n    }\n    /**\n     * Adds a one-time `listener` function as an event listener for `ev`.\n     *\n     * @param ev Name of the event\n     * @param listener Callback function\n     */\n    once(ev, listener) {\n        super.once(ev, listener);\n        return this;\n    }\n    /**\n     * Emits an event.\n     *\n     * @param ev Name of the event\n     * @param args Values to send to listeners of this event\n     */\n    emit(ev, ...args) {\n        super.emit(ev, ...args);\n        return this;\n    }\n    /**\n     * Emits a reserved event.\n     *\n     * This method is `protected`, so that only a class extending\n     * `StrictEventEmitter` can emit its own reserved events.\n     *\n     * @param ev Reserved event name\n     * @param args Arguments to emit along with the event\n     */\n    emitReserved(ev, ...args) {\n        super.emit(ev, ...args);\n        return this;\n    }\n    /**\n     * Returns the listeners listening to an event.\n     *\n     * @param event Event name\n     * @returns Array of listeners subscribed to `event`\n     */\n    listeners(event) {\n        return super.listeners(event);\n    }\n}\nexports.StrictEventEmitter = StrictEventEmitter;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.io = exports.Socket = exports.Manager = exports.protocol = void 0;\nconst url_1 = require(\"./url\");\nconst manager_1 = require(\"./manager\");\n\n\n/**\n * Module exports.\n */\nmodule.exports = exports = lookup;\n/**\n * Managers cache.\n */\nconst cache = (exports.managers = {});\nfunction lookup(uri, opts) {\n    if (typeof uri === \"object\") {\n        opts = uri;\n        uri = undefined;\n    }\n    opts = opts || {};\n    const parsed = url_1.url(uri, opts.path || \"/socket.io\");\n    const source = parsed.source;\n    const id = parsed.id;\n    const path = parsed.path;\n    const sameNamespace = cache[id] && path in cache[id][\"nsps\"];\n    const newConnection = opts.forceNew ||\n        opts[\"force new connection\"] ||\n        false === opts.multiplex ||\n        sameNamespace;\n    let io;\n    if (newConnection) {\n\n\n        io = new manager_1.Manager(source, opts);\n    }\n    else {\n        if (!cache[id]) {\n\n\n            cache[id] = new manager_1.Manager(source, opts);\n        }\n        io = cache[id];\n    }\n    if (parsed.query && !opts.query) {\n        opts.query = parsed.queryKey;\n    }\n    return io.socket(parsed.path, opts);\n}\nexports.io = lookup;\n/**\n * Protocol version.\n *\n * @public\n */\nvar socket_io_parser_1 = require(\"socket.io-parser\");\nObject.defineProperty(exports, \"protocol\", { enumerable: true, get: function () { return socket_io_parser_1.protocol; } });\n/**\n * `connect`.\n *\n * @param {String} uri\n * @public\n */\nexports.connect = lookup;\n/**\n * Expose constructors for standalone build.\n *\n * @public\n */\nvar manager_2 = require(\"./manager\");\nObject.defineProperty(exports, \"Manager\", { enumerable: true, get: function () { return manager_2.Manager; } });\nvar socket_1 = require(\"./socket\");\nObject.defineProperty(exports, \"Socket\", { enumerable: true, get: function () { return socket_1.Socket; } });\nexports.default = lookup;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.url = void 0;\nconst parseuri = require(\"parseuri\");\n\n\n/**\n * URL parser.\n *\n * @param uri - url\n * @param path - the request path of the connection\n * @param loc - An object meant to mimic window.location.\n *        Defaults to window.location.\n * @public\n */\nfunction url(uri, path = \"\", loc) {\n    let obj = uri;\n    // default to window.location\n    loc = loc || (typeof location !== \"undefined\" && location);\n    if (null == uri)\n        uri = loc.protocol + \"//\" + loc.host;\n    // relative path support\n    if (typeof uri === \"string\") {\n        if (\"/\" === uri.charAt(0)) {\n            if (\"/\" === uri.charAt(1)) {\n                uri = loc.protocol + uri;\n            }\n            else {\n                uri = loc.host + uri;\n            }\n        }\n        if (!/^(https?|wss?):\\/\\//.test(uri)) {\n\n\n            if (\"undefined\" !== typeof loc) {\n                uri = loc.protocol + \"//\" + uri;\n            }\n            else {\n                uri = \"https://\" + uri;\n            }\n        }\n        // parse\n\n\n        obj = parseuri(uri);\n    }\n    // make sure we treat `localhost:80` and `localhost` equally\n    if (!obj.port) {\n        if (/^(http|ws)$/.test(obj.protocol)) {\n            obj.port = \"80\";\n        }\n        else if (/^(http|ws)s$/.test(obj.protocol)) {\n            obj.port = \"443\";\n        }\n    }\n    obj.path = obj.path || \"/\";\n    const ipv6 = obj.host.indexOf(\":\") !== -1;\n    const host = ipv6 ? \"[\" + obj.host + \"]\" : obj.host;\n    // define unique id\n    obj.id = obj.protocol + \"://\" + host + \":\" + obj.port + path;\n    // define href\n    obj.href =\n        obj.protocol +\n            \"://\" +\n            host +\n            (loc && loc.port === obj.port ? \"\" : \":\" + obj.port);\n    return obj;\n}\nexports.url = url;\n","const Socket = require(\"./socket\");\n\nmodule.exports = (uri, opts) => new Socket(uri, opts);\n\n/**\n * Expose deps for legacy compatibility\n * and standalone browser access.\n */\n\nmodule.exports.Socket = Socket;\nmodule.exports.protocol = Socket.protocol; // this is an int\nmodule.exports.Transport = require(\"./transport\");\nmodule.exports.transports = require(\"./transports/index\");\nmodule.exports.parser = require(\"engine.io-parser\");\n","const transports = require(\"./transports/index\");\nconst Emitter = require(\"component-emitter\");\n\n\nconst parser = require(\"engine.io-parser\");\nconst parseuri = require(\"parseuri\");\nconst parseqs = require(\"parseqs\");\n\nclass Socket extends Emitter {\n  /**\n   * Socket constructor.\n   *\n   * @param {String|Object} uri or options\n   * @param {Object} options\n   * @api public\n   */\n  constructor(uri, opts = {}) {\n    super();\n\n    if (uri && \"object\" === typeof uri) {\n      opts = uri;\n      uri = null;\n    }\n\n    if (uri) {\n      uri = parseuri(uri);\n      opts.hostname = uri.host;\n      opts.secure = uri.protocol === \"https\" || uri.protocol === \"wss\";\n      opts.port = uri.port;\n      if (uri.query) opts.query = uri.query;\n    } else if (opts.host) {\n      opts.hostname = parseuri(opts.host).host;\n    }\n\n    this.secure =\n      null != opts.secure\n        ? opts.secure\n        : typeof location !== \"undefined\" && \"https:\" === location.protocol;\n\n    if (opts.hostname && !opts.port) {\n      // if no port is specified manually, use the protocol default\n      opts.port = this.secure ? \"443\" : \"80\";\n    }\n\n    this.hostname =\n      opts.hostname ||\n      (typeof location !== \"undefined\" ? location.hostname : \"localhost\");\n    this.port =\n      opts.port ||\n      (typeof location !== \"undefined\" && location.port\n        ? location.port\n        : this.secure\n        ? 443\n        : 80);\n\n    this.transports = opts.transports || [\"polling\", \"websocket\"];\n    this.readyState = \"\";\n    this.writeBuffer = [];\n    this.prevBufferLen = 0;\n\n    this.opts = Object.assign(\n      {\n        path: \"/engine.io\",\n        agent: false,\n        withCredentials: false,\n        upgrade: true,\n        jsonp: true,\n        timestampParam: \"t\",\n        rememberUpgrade: false,\n        rejectUnauthorized: true,\n        perMessageDeflate: {\n          threshold: 1024\n        },\n        transportOptions: {},\n        closeOnBeforeunload: true\n      },\n      opts\n    );\n\n    this.opts.path = this.opts.path.replace(/\\/$/, \"\") + \"/\";\n\n    if (typeof this.opts.query === \"string\") {\n      this.opts.query = parseqs.decode(this.opts.query);\n    }\n\n    // set on handshake\n    this.id = null;\n    this.upgrades = null;\n    this.pingInterval = null;\n    this.pingTimeout = null;\n\n    // set on heartbeat\n    this.pingTimeoutTimer = null;\n\n    if (typeof addEventListener === \"function\") {\n      if (this.opts.closeOnBeforeunload) {\n        // Firefox closes the connection when the \"beforeunload\" event is emitted but not Chrome. This event listener\n        // ensures every browser behaves the same (no \"disconnect\" event at the Socket.IO level when the page is\n        // closed/reloaded)\n        addEventListener(\n          \"beforeunload\",\n          () => {\n            if (this.transport) {\n              // silently close the transport\n              this.transport.removeAllListeners();\n              this.transport.close();\n            }\n          },\n          false\n        );\n      }\n      if (this.hostname !== \"localhost\") {\n        this.offlineEventListener = () => {\n          this.onClose(\"transport close\");\n        };\n        addEventListener(\"offline\", this.offlineEventListener, false);\n      }\n    }\n\n    this.open();\n  }\n\n  /**\n   * Creates transport of the given type.\n   *\n   * @param {String} transport name\n   * @return {Transport}\n   * @api private\n   */\n  createTransport(name) {\n\n\n    const query = clone(this.opts.query);\n\n    // append engine.io protocol identifier\n    query.EIO = parser.protocol;\n\n    // transport name\n    query.transport = name;\n\n    // session id if we already have one\n    if (this.id) query.sid = this.id;\n\n    const opts = Object.assign(\n      {},\n      this.opts.transportOptions[name],\n      this.opts,\n      {\n        query,\n        socket: this,\n        hostname: this.hostname,\n        secure: this.secure,\n        port: this.port\n      }\n    );\n\n\n\n\n    return new transports[name](opts);\n  }\n\n  /**\n   * Initializes transport to use and starts probe.\n   *\n   * @api private\n   */\n  open() {\n    let transport;\n    if (\n      this.opts.rememberUpgrade &&\n      Socket.priorWebsocketSuccess &&\n      this.transports.indexOf(\"websocket\") !== -1\n    ) {\n      transport = \"websocket\";\n    } else if (0 === this.transports.length) {\n      // Emit error on next tick so it can be listened to\n      setTimeout(() => {\n        this.emit(\"error\", \"No transports available\");\n      }, 0);\n      return;\n    } else {\n      transport = this.transports[0];\n    }\n    this.readyState = \"opening\";\n\n    // Retry with the next transport if the transport is disabled (jsonp: false)\n    try {\n      transport = this.createTransport(transport);\n    } catch (e) {\n\n\n      this.transports.shift();\n      this.open();\n      return;\n    }\n\n    transport.open();\n    this.setTransport(transport);\n  }\n\n  /**\n   * Sets the current transport. Disables the existing one (if any).\n   *\n   * @api private\n   */\n  setTransport(transport) {\n\n\n\n    if (this.transport) {\n\n\n      this.transport.removeAllListeners();\n    }\n\n    // set up transport\n    this.transport = transport;\n\n    // set up transport listeners\n    transport\n      .on(\"drain\", this.onDrain.bind(this))\n      .on(\"packet\", this.onPacket.bind(this))\n      .on(\"error\", this.onError.bind(this))\n      .on(\"close\", () => {\n        this.onClose(\"transport close\");\n      });\n  }\n\n  /**\n   * Probes a transport.\n   *\n   * @param {String} transport name\n   * @api private\n   */\n  probe(name) {\n\n\n    let transport = this.createTransport(name, { probe: 1 });\n    let failed = false;\n\n    Socket.priorWebsocketSuccess = false;\n\n    const onTransportOpen = () => {\n      if (failed) return;\n\n\n\n      transport.send([{ type: \"ping\", data: \"probe\" }]);\n      transport.once(\"packet\", msg => {\n        if (failed) return;\n        if (\"pong\" === msg.type && \"probe\" === msg.data) {\n\n\n          this.upgrading = true;\n          this.emit(\"upgrading\", transport);\n          if (!transport) return;\n          Socket.priorWebsocketSuccess = \"websocket\" === transport.name;\n\n\n\n          this.transport.pause(() => {\n            if (failed) return;\n            if (\"closed\" === this.readyState) return;\n\n\n\n            cleanup();\n\n            this.setTransport(transport);\n            transport.send([{ type: \"upgrade\" }]);\n            this.emit(\"upgrade\", transport);\n            transport = null;\n            this.upgrading = false;\n            this.flush();\n          });\n        } else {\n\n\n          const err = new Error(\"probe error\");\n          err.transport = transport.name;\n          this.emit(\"upgradeError\", err);\n        }\n      });\n    };\n\n    function freezeTransport() {\n      if (failed) return;\n\n      // Any callback called by transport should be ignored since now\n      failed = true;\n\n      cleanup();\n\n      transport.close();\n      transport = null;\n    }\n\n    // Handle any error that happens while probing\n    const onerror = err => {\n      const error = new Error(\"probe error: \" + err);\n      error.transport = transport.name;\n\n      freezeTransport();\n\n\n\n\n      this.emit(\"upgradeError\", error);\n    };\n\n    function onTransportClose() {\n      onerror(\"transport closed\");\n    }\n\n    // When the socket is closed while we're probing\n    function onclose() {\n      onerror(\"socket closed\");\n    }\n\n    // When the socket is upgraded while we're probing\n    function onupgrade(to) {\n      if (transport && to.name !== transport.name) {\n\n\n        freezeTransport();\n      }\n    }\n\n    // Remove all listeners on the transport and on self\n    const cleanup = () => {\n      transport.removeListener(\"open\", onTransportOpen);\n      transport.removeListener(\"error\", onerror);\n      transport.removeListener(\"close\", onTransportClose);\n      this.removeListener(\"close\", onclose);\n      this.removeListener(\"upgrading\", onupgrade);\n    };\n\n    transport.once(\"open\", onTransportOpen);\n    transport.once(\"error\", onerror);\n    transport.once(\"close\", onTransportClose);\n\n    this.once(\"close\", onclose);\n    this.once(\"upgrading\", onupgrade);\n\n    transport.open();\n  }\n\n  /**\n   * Called when connection is deemed open.\n   *\n   * @api public\n   */\n  onOpen() {\n\n\n    this.readyState = \"open\";\n    Socket.priorWebsocketSuccess = \"websocket\" === this.transport.name;\n    this.emit(\"open\");\n    this.flush();\n\n    // we check for `readyState` in case an `open`\n    // listener already closed the socket\n    if (\n      \"open\" === this.readyState &&\n      this.opts.upgrade &&\n      this.transport.pause\n    ) {\n\n\n      let i = 0;\n      const l = this.upgrades.length;\n      for (; i < l; i++) {\n        this.probe(this.upgrades[i]);\n      }\n    }\n  }\n\n  /**\n   * Handles a packet.\n   *\n   * @api private\n   */\n  onPacket(packet) {\n    if (\n      \"opening\" === this.readyState ||\n      \"open\" === this.readyState ||\n      \"closing\" === this.readyState\n    ) {\n\n\n\n      this.emit(\"packet\", packet);\n\n      // Socket is live - any packet counts\n      this.emit(\"heartbeat\");\n\n      switch (packet.type) {\n        case \"open\":\n          this.onHandshake(JSON.parse(packet.data));\n          break;\n\n        case \"ping\":\n          this.resetPingTimeout();\n          this.sendPacket(\"pong\");\n          this.emit(\"ping\");\n          this.emit(\"pong\");\n          break;\n\n        case \"error\":\n          const err = new Error(\"server error\");\n          err.code = packet.data;\n          this.onError(err);\n          break;\n\n        case \"message\":\n          this.emit(\"data\", packet.data);\n          this.emit(\"message\", packet.data);\n          break;\n      }\n    } else {\n\n\n    }\n  }\n\n  /**\n   * Called upon handshake completion.\n   *\n   * @param {Object} handshake obj\n   * @api private\n   */\n  onHandshake(data) {\n    this.emit(\"handshake\", data);\n    this.id = data.sid;\n    this.transport.query.sid = data.sid;\n    this.upgrades = this.filterUpgrades(data.upgrades);\n    this.pingInterval = data.pingInterval;\n    this.pingTimeout = data.pingTimeout;\n    this.onOpen();\n    // In case open handler closes socket\n    if (\"closed\" === this.readyState) return;\n    this.resetPingTimeout();\n  }\n\n  /**\n   * Sets and resets ping timeout timer based on server pings.\n   *\n   * @api private\n   */\n  resetPingTimeout() {\n    clearTimeout(this.pingTimeoutTimer);\n    this.pingTimeoutTimer = setTimeout(() => {\n      this.onClose(\"ping timeout\");\n    }, this.pingInterval + this.pingTimeout);\n    if (this.opts.autoUnref) {\n      this.pingTimeoutTimer.unref();\n    }\n  }\n\n  /**\n   * Called on `drain` event\n   *\n   * @api private\n   */\n  onDrain() {\n    this.writeBuffer.splice(0, this.prevBufferLen);\n\n    // setting prevBufferLen = 0 is very important\n    // for example, when upgrading, upgrade packet is sent over,\n    // and a nonzero prevBufferLen could cause problems on `drain`\n    this.prevBufferLen = 0;\n\n    if (0 === this.writeBuffer.length) {\n      this.emit(\"drain\");\n    } else {\n      this.flush();\n    }\n  }\n\n  /**\n   * Flush write buffers.\n   *\n   * @api private\n   */\n  flush() {\n    if (\n      \"closed\" !== this.readyState &&\n      this.transport.writable &&\n      !this.upgrading &&\n      this.writeBuffer.length\n    ) {\n\n\n      this.transport.send(this.writeBuffer);\n      // keep track of current length of writeBuffer\n      // splice writeBuffer and callbackBuffer on `drain`\n      this.prevBufferLen = this.writeBuffer.length;\n      this.emit(\"flush\");\n    }\n  }\n\n  /**\n   * Sends a message.\n   *\n   * @param {String} message.\n   * @param {Function} callback function.\n   * @param {Object} options.\n   * @return {Socket} for chaining.\n   * @api public\n   */\n  write(msg, options, fn) {\n    this.sendPacket(\"message\", msg, options, fn);\n    return this;\n  }\n\n  send(msg, options, fn) {\n    this.sendPacket(\"message\", msg, options, fn);\n    return this;\n  }\n\n  /**\n   * Sends a packet.\n   *\n   * @param {String} packet type.\n   * @param {String} data.\n   * @param {Object} options.\n   * @param {Function} callback function.\n   * @api private\n   */\n  sendPacket(type, data, options, fn) {\n    if (\"function\" === typeof data) {\n      fn = data;\n      data = undefined;\n    }\n\n    if (\"function\" === typeof options) {\n      fn = options;\n      options = null;\n    }\n\n    if (\"closing\" === this.readyState || \"closed\" === this.readyState) {\n      return;\n    }\n\n    options = options || {};\n    options.compress = false !== options.compress;\n\n    const packet = {\n      type: type,\n      data: data,\n      options: options\n    };\n    this.emit(\"packetCreate\", packet);\n    this.writeBuffer.push(packet);\n    if (fn) this.once(\"flush\", fn);\n    this.flush();\n  }\n\n  /**\n   * Closes the connection.\n   *\n   * @api private\n   */\n  close() {\n    const close = () => {\n      this.onClose(\"forced close\");\n\n\n      this.transport.close();\n    };\n\n    const cleanupAndClose = () => {\n      this.removeListener(\"upgrade\", cleanupAndClose);\n      this.removeListener(\"upgradeError\", cleanupAndClose);\n      close();\n    };\n\n    const waitForUpgrade = () => {\n      // wait for upgrade to finish since we can't send packets while pausing a transport\n      this.once(\"upgrade\", cleanupAndClose);\n      this.once(\"upgradeError\", cleanupAndClose);\n    };\n\n    if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n      this.readyState = \"closing\";\n\n      if (this.writeBuffer.length) {\n        this.once(\"drain\", () => {\n          if (this.upgrading) {\n            waitForUpgrade();\n          } else {\n            close();\n          }\n        });\n      } else if (this.upgrading) {\n        waitForUpgrade();\n      } else {\n        close();\n      }\n    }\n\n    return this;\n  }\n\n  /**\n   * Called upon transport error\n   *\n   * @api private\n   */\n  onError(err) {\n\n\n    Socket.priorWebsocketSuccess = false;\n    this.emit(\"error\", err);\n    this.onClose(\"transport error\", err);\n  }\n\n  /**\n   * Called upon transport close.\n   *\n   * @api private\n   */\n  onClose(reason, desc) {\n    if (\n      \"opening\" === this.readyState ||\n      \"open\" === this.readyState ||\n      \"closing\" === this.readyState\n    ) {\n\n\n\n      // clear timers\n      clearTimeout(this.pingIntervalTimer);\n      clearTimeout(this.pingTimeoutTimer);\n\n      // stop event from firing again for transport\n      this.transport.removeAllListeners(\"close\");\n\n      // ensure transport won't stay open\n      this.transport.close();\n\n      // ignore further transport communication\n      this.transport.removeAllListeners();\n\n      if (typeof removeEventListener === \"function\") {\n        removeEventListener(\"offline\", this.offlineEventListener, false);\n      }\n\n      // set ready state\n      this.readyState = \"closed\";\n\n      // clear session id\n      this.id = null;\n\n      // emit close event\n      this.emit(\"close\", reason, desc);\n\n      // clean buffers after, so users can still\n      // grab the buffers on `close` event\n      this.writeBuffer = [];\n      this.prevBufferLen = 0;\n    }\n  }\n\n  /**\n   * Filters upgrades, returning only those matching client transports.\n   *\n   * @param {Array} server upgrades\n   * @api private\n   *\n   */\n  filterUpgrades(upgrades) {\n    const filteredUpgrades = [];\n    let i = 0;\n    const j = upgrades.length;\n    for (; i < j; i++) {\n      if (~this.transports.indexOf(upgrades[i]))\n        filteredUpgrades.push(upgrades[i]);\n    }\n    return filteredUpgrades;\n  }\n}\n\nSocket.priorWebsocketSuccess = false;\n\n/**\n * Protocol version.\n *\n * @api public\n */\n\nSocket.protocol = parser.protocol; // this is an int\n\nfunction clone(obj) {\n  const o = {};\n  for (let i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      o[i] = obj[i];\n    }\n  }\n  return o;\n}\n\nmodule.exports = Socket;\n","\n/**\n * Module exports.\n *\n * Logic borrowed from Modernizr:\n *\n *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js\n */\n\ntry {\n  module.exports = typeof XMLHttpRequest !== 'undefined' &&\n    'withCredentials' in new XMLHttpRequest();\n} catch (err) {\n  // if XMLHttp support is disabled in IE then it will throw\n  // when trying to create\n  module.exports = false;\n}\n","/* global attachEvent */\n\nconst XMLHttpRequest = require(\"../../contrib/xmlhttprequest-ssl/XMLHttpRequest\");\nconst Polling = require(\"./polling\");\nconst Emitter = require(\"component-emitter\");\nconst { pick } = require(\"../util\");\nconst globalThis = require(\"../globalThis\");\n\n\n\n\n/**\n * Empty function\n */\n\nfunction empty() {}\n\nconst hasXHR2 = (function() {\n  const xhr = new XMLHttpRequest({ xdomain: false });\n  return null != xhr.responseType;\n})();\n\nclass XHR extends Polling {\n  /**\n   * XHR Polling constructor.\n   *\n   * @param {Object} opts\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    if (typeof location !== \"undefined\") {\n      const isSSL = \"https:\" === location.protocol;\n      let port = location.port;\n\n      // some user agents have empty `location.port`\n      if (!port) {\n        port = isSSL ? 443 : 80;\n      }\n\n      this.xd =\n        (typeof location !== \"undefined\" &&\n          opts.hostname !== location.hostname) ||\n        port !== opts.port;\n      this.xs = opts.secure !== isSSL;\n    }\n    /**\n     * XHR supports binary\n     */\n    const forceBase64 = opts && opts.forceBase64;\n    this.supportsBinary = hasXHR2 && !forceBase64;\n  }\n\n  /**\n   * Creates a request.\n   *\n   * @param {String} method\n   * @api private\n   */\n  request(opts = {}) {\n    Object.assign(opts, { xd: this.xd, xs: this.xs }, this.opts);\n    return new Request(this.uri(), opts);\n  }\n\n  /**\n   * Sends data.\n   *\n   * @param {String} data to send.\n   * @param {Function} called upon flush.\n   * @api private\n   */\n  doWrite(data, fn) {\n    const req = this.request({\n      method: \"POST\",\n      data: data\n    });\n    req.on(\"success\", fn);\n    req.on(\"error\", err => {\n      this.onError(\"xhr post error\", err);\n    });\n  }\n\n  /**\n   * Starts a poll cycle.\n   *\n   * @api private\n   */\n  doPoll() {\n\n\n    const req = this.request();\n    req.on(\"data\", this.onData.bind(this));\n    req.on(\"error\", err => {\n      this.onError(\"xhr poll error\", err);\n    });\n    this.pollXhr = req;\n  }\n}\n\nclass Request extends Emitter {\n  /**\n   * Request constructor\n   *\n   * @param {Object} options\n   * @api public\n   */\n  constructor(uri, opts) {\n    super();\n    this.opts = opts;\n\n    this.method = opts.method || \"GET\";\n    this.uri = uri;\n    this.async = false !== opts.async;\n    this.data = undefined !== opts.data ? opts.data : null;\n\n    this.create();\n  }\n\n  /**\n   * Creates the XHR object and sends the request.\n   *\n   * @api private\n   */\n  create() {\n    const opts = pick(\n      this.opts,\n      \"agent\",\n      \"enablesXDR\",\n      \"pfx\",\n      \"key\",\n      \"passphrase\",\n      \"cert\",\n      \"ca\",\n      \"ciphers\",\n      \"rejectUnauthorized\",\n      \"autoUnref\"\n    );\n    opts.xdomain = !!this.opts.xd;\n    opts.xscheme = !!this.opts.xs;\n\n    const xhr = (this.xhr = new XMLHttpRequest(opts));\n\n    try {\n\n\n      xhr.open(this.method, this.uri, this.async);\n      try {\n        if (this.opts.extraHeaders) {\n          xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);\n          for (let i in this.opts.extraHeaders) {\n            if (this.opts.extraHeaders.hasOwnProperty(i)) {\n              xhr.setRequestHeader(i, this.opts.extraHeaders[i]);\n            }\n          }\n        }\n      } catch (e) {}\n\n      if (\"POST\" === this.method) {\n        try {\n          xhr.setRequestHeader(\"Content-type\", \"text/plain;charset=UTF-8\");\n        } catch (e) {}\n      }\n\n      try {\n        xhr.setRequestHeader(\"Accept\", \"*/*\");\n      } catch (e) {}\n\n      // ie6 check\n      if (\"withCredentials\" in xhr) {\n        xhr.withCredentials = this.opts.withCredentials;\n      }\n\n      if (this.opts.requestTimeout) {\n        xhr.timeout = this.opts.requestTimeout;\n      }\n\n      if (this.hasXDR()) {\n        xhr.onload = () => {\n          this.onLoad();\n        };\n        xhr.onerror = () => {\n          this.onError(xhr.responseText);\n        };\n      } else {\n        xhr.onreadystatechange = () => {\n          if (4 !== xhr.readyState) return;\n          if (200 === xhr.status || 1223 === xhr.status) {\n            this.onLoad();\n          } else {\n            // make sure the `error` event handler that's user-set\n            // does not throw in the same tick and gets caught here\n            setTimeout(() => {\n              this.onError(typeof xhr.status === \"number\" ? xhr.status : 0);\n            }, 0);\n          }\n        };\n      }\n\n\n\n      xhr.send(this.data);\n    } catch (e) {\n      // Need to defer since .create() is called directly from the constructor\n      // and thus the 'error' event can only be only bound *after* this exception\n      // occurs.  Therefore, also, we cannot throw here at all.\n      setTimeout(() => {\n        this.onError(e);\n      }, 0);\n      return;\n    }\n\n    if (typeof document !== \"undefined\") {\n      this.index = Request.requestsCount++;\n      Request.requests[this.index] = this;\n    }\n  }\n\n  /**\n   * Called upon successful response.\n   *\n   * @api private\n   */\n  onSuccess() {\n    this.emit(\"success\");\n    this.cleanup();\n  }\n\n  /**\n   * Called if we have data.\n   *\n   * @api private\n   */\n  onData(data) {\n    this.emit(\"data\", data);\n    this.onSuccess();\n  }\n\n  /**\n   * Called upon error.\n   *\n   * @api private\n   */\n  onError(err) {\n    this.emit(\"error\", err);\n    this.cleanup(true);\n  }\n\n  /**\n   * Cleans up house.\n   *\n   * @api private\n   */\n  cleanup(fromError) {\n    if (\"undefined\" === typeof this.xhr || null === this.xhr) {\n      return;\n    }\n    // xmlhttprequest\n    if (this.hasXDR()) {\n      this.xhr.onload = this.xhr.onerror = empty;\n    } else {\n      this.xhr.onreadystatechange = empty;\n    }\n\n    if (fromError) {\n      try {\n        this.xhr.abort();\n      } catch (e) {}\n    }\n\n    if (typeof document !== \"undefined\") {\n      delete Request.requests[this.index];\n    }\n\n    this.xhr = null;\n  }\n\n  /**\n   * Called upon load.\n   *\n   * @api private\n   */\n  onLoad() {\n    const data = this.xhr.responseText;\n    if (data !== null) {\n      this.onData(data);\n    }\n  }\n\n  /**\n   * Check if it has XDomainRequest.\n   *\n   * @api private\n   */\n  hasXDR() {\n    return typeof XDomainRequest !== \"undefined\" && !this.xs && this.enablesXDR;\n  }\n\n  /**\n   * Aborts the request.\n   *\n   * @api public\n   */\n  abort() {\n    this.cleanup();\n  }\n}\n\n/**\n * Aborts pending requests when unloading the window. This is needed to prevent\n * memory leaks (e.g. when using IE) and to ensure that no spurious error is\n * emitted.\n */\n\nRequest.requestsCount = 0;\nRequest.requests = {};\n\nif (typeof document !== \"undefined\") {\n  if (typeof attachEvent === \"function\") {\n    attachEvent(\"onunload\", unloadHandler);\n  } else if (typeof addEventListener === \"function\") {\n    const terminationEvent = \"onpagehide\" in globalThis ? \"pagehide\" : \"unload\";\n    addEventListener(terminationEvent, unloadHandler, false);\n  }\n}\n\nfunction unloadHandler() {\n  for (let i in Request.requests) {\n    if (Request.requests.hasOwnProperty(i)) {\n      Request.requests[i].abort();\n    }\n  }\n}\n\nmodule.exports = XHR;\nmodule.exports.Request = Request;\n","const { PACKET_TYPES } = require(\"./commons\");\n\nconst withNativeBlob =\n  typeof Blob === \"function\" ||\n  (typeof Blob !== \"undefined\" &&\n    Object.prototype.toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n\n// ArrayBuffer.isView method is not defined in IE10\nconst isView = obj => {\n  return typeof ArrayBuffer.isView === \"function\"\n    ? ArrayBuffer.isView(obj)\n    : obj && obj.buffer instanceof ArrayBuffer;\n};\n\nconst encodePacket = ({ type, data }, supportsBinary, callback) => {\n  if (withNativeBlob && data instanceof Blob) {\n    if (supportsBinary) {\n      return callback(data);\n    } else {\n      return encodeBlobAsBase64(data, callback);\n    }\n  } else if (\n    withNativeArrayBuffer &&\n    (data instanceof ArrayBuffer || isView(data))\n  ) {\n    if (supportsBinary) {\n      return callback(data instanceof ArrayBuffer ? data : data.buffer);\n    } else {\n      return encodeBlobAsBase64(new Blob([data]), callback);\n    }\n  }\n  // plain string\n  return callback(PACKET_TYPES[type] + (data || \"\"));\n};\n\nconst encodeBlobAsBase64 = (data, callback) => {\n  const fileReader = new FileReader();\n  fileReader.onload = function() {\n    const content = fileReader.result.split(\",\")[1];\n    callback(\"b\" + content);\n  };\n  return fileReader.readAsDataURL(data);\n};\n\nmodule.exports = encodePacket;\n","const { PACKET_TYPES_REVERSE, ERROR_PACKET } = require(\"./commons\");\n\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n\nlet base64decoder;\nif (withNativeArrayBuffer) {\n  base64decoder = require(\"base64-arraybuffer\");\n}\n\nconst decodePacket = (encodedPacket, binaryType) => {\n  if (typeof encodedPacket !== \"string\") {\n    return {\n      type: \"message\",\n      data: mapBinary(encodedPacket, binaryType)\n    };\n  }\n  const type = encodedPacket.charAt(0);\n  if (type === \"b\") {\n    return {\n      type: \"message\",\n      data: decodeBase64Packet(encodedPacket.substring(1), binaryType)\n    };\n  }\n  const packetType = PACKET_TYPES_REVERSE[type];\n  if (!packetType) {\n    return ERROR_PACKET;\n  }\n  return encodedPacket.length > 1\n    ? {\n        type: PACKET_TYPES_REVERSE[type],\n        data: encodedPacket.substring(1)\n      }\n    : {\n        type: PACKET_TYPES_REVERSE[type]\n      };\n};\n\nconst decodeBase64Packet = (data, binaryType) => {\n  if (base64decoder) {\n    const decoded = base64decoder.decode(data);\n    return mapBinary(decoded, binaryType);\n  } else {\n    return { base64: true, data }; // fallback for old browsers\n  }\n};\n\nconst mapBinary = (data, binaryType) => {\n  switch (binaryType) {\n    case \"blob\":\n      return data instanceof ArrayBuffer ? new Blob([data]) : data;\n    case \"arraybuffer\":\n    default:\n      return data; // assuming the data is already an ArrayBuffer\n  }\n};\n\nmodule.exports = decodePacket;\n","/*\n * base64-arraybuffer\n * https://github.com/niklasvh/base64-arraybuffer\n *\n * Copyright (c) 2012 Niklas von Hertzen\n * Licensed under the MIT license.\n */\n(function(chars){\n  \"use strict\";\n\n  exports.encode = function(arraybuffer) {\n    var bytes = new Uint8Array(arraybuffer),\n    i, len = bytes.length, base64 = \"\";\n\n    for (i = 0; i < len; i+=3) {\n      base64 += chars[bytes[i] >> 2];\n      base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];\n      base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];\n      base64 += chars[bytes[i + 2] & 63];\n    }\n\n    if ((len % 3) === 2) {\n      base64 = base64.substring(0, base64.length - 1) + \"=\";\n    } else if (len % 3 === 1) {\n      base64 = base64.substring(0, base64.length - 2) + \"==\";\n    }\n\n    return base64;\n  };\n\n  exports.decode =  function(base64) {\n    var bufferLength = base64.length * 0.75,\n    len = base64.length, i, p = 0,\n    encoded1, encoded2, encoded3, encoded4;\n\n    if (base64[base64.length - 1] === \"=\") {\n      bufferLength--;\n      if (base64[base64.length - 2] === \"=\") {\n        bufferLength--;\n      }\n    }\n\n    var arraybuffer = new ArrayBuffer(bufferLength),\n    bytes = new Uint8Array(arraybuffer);\n\n    for (i = 0; i < len; i+=4) {\n      encoded1 = chars.indexOf(base64[i]);\n      encoded2 = chars.indexOf(base64[i+1]);\n      encoded3 = chars.indexOf(base64[i+2]);\n      encoded4 = chars.indexOf(base64[i+3]);\n\n      bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);\n      bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);\n      bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);\n    }\n\n    return arraybuffer;\n  };\n})(\"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\");\n","const Polling = require(\"./polling\");\nconst globalThis = require(\"../globalThis\");\n\nconst rNewline = /\\n/g;\nconst rEscapedNewline = /\\\\n/g;\n\n/**\n * Global JSONP callbacks.\n */\n\nlet callbacks;\n\nclass JSONPPolling extends Polling {\n  /**\n   * JSONP Polling constructor.\n   *\n   * @param {Object} opts.\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    this.query = this.query || {};\n\n    // define global callbacks array if not present\n    // we do this here (lazily) to avoid unneeded global pollution\n    if (!callbacks) {\n      // we need to consider multiple engines in the same page\n      callbacks = globalThis.___eio = globalThis.___eio || [];\n    }\n\n    // callback identifier\n    this.index = callbacks.length;\n\n    // add callback to jsonp global\n    callbacks.push(this.onData.bind(this));\n\n    // append to query string\n    this.query.j = this.index;\n  }\n\n  /**\n   * JSONP only supports binary as base64 encoded strings\n   */\n  get supportsBinary() {\n    return false;\n  }\n\n  /**\n   * Closes the socket.\n   *\n   * @api private\n   */\n  doClose() {\n    if (this.script) {\n      // prevent spurious errors from being emitted when the window is unloaded\n      this.script.onerror = () => {};\n      this.script.parentNode.removeChild(this.script);\n      this.script = null;\n    }\n\n    if (this.form) {\n      this.form.parentNode.removeChild(this.form);\n      this.form = null;\n      this.iframe = null;\n    }\n\n    super.doClose();\n  }\n\n  /**\n   * Starts a poll cycle.\n   *\n   * @api private\n   */\n  doPoll() {\n    const script = document.createElement(\"script\");\n\n    if (this.script) {\n      this.script.parentNode.removeChild(this.script);\n      this.script = null;\n    }\n\n    script.async = true;\n    script.src = this.uri();\n    script.onerror = e => {\n      this.onError(\"jsonp poll error\", e);\n    };\n\n    const insertAt = document.getElementsByTagName(\"script\")[0];\n    if (insertAt) {\n      insertAt.parentNode.insertBefore(script, insertAt);\n    } else {\n      (document.head || document.body).appendChild(script);\n    }\n    this.script = script;\n\n    const isUAgecko =\n      \"undefined\" !== typeof navigator && /gecko/i.test(navigator.userAgent);\n\n    if (isUAgecko) {\n      setTimeout(function() {\n        const iframe = document.createElement(\"iframe\");\n        document.body.appendChild(iframe);\n        document.body.removeChild(iframe);\n      }, 100);\n    }\n  }\n\n  /**\n   * Writes with a hidden iframe.\n   *\n   * @param {String} data to send\n   * @param {Function} called upon flush.\n   * @api private\n   */\n  doWrite(data, fn) {\n    let iframe;\n\n    if (!this.form) {\n      const form = document.createElement(\"form\");\n      const area = document.createElement(\"textarea\");\n      const id = (this.iframeId = \"eio_iframe_\" + this.index);\n\n      form.className = \"socketio\";\n      form.style.position = \"absolute\";\n      form.style.top = \"-1000px\";\n      form.style.left = \"-1000px\";\n      form.target = id;\n      form.method = \"POST\";\n      form.setAttribute(\"accept-charset\", \"utf-8\");\n      area.name = \"d\";\n      form.appendChild(area);\n      document.body.appendChild(form);\n\n      this.form = form;\n      this.area = area;\n    }\n\n    this.form.action = this.uri();\n\n    function complete() {\n      initIframe();\n      fn();\n    }\n\n    const initIframe = () => {\n      if (this.iframe) {\n        try {\n          this.form.removeChild(this.iframe);\n        } catch (e) {\n          this.onError(\"jsonp polling iframe removal error\", e);\n        }\n      }\n\n      try {\n        // ie6 dynamic iframes with target=\"\" support (thanks Chris Lambacher)\n        const html = '<iframe src=\"javascript:0\" name=\"' + this.iframeId + '\">';\n        iframe = document.createElement(html);\n      } catch (e) {\n        iframe = document.createElement(\"iframe\");\n        iframe.name = this.iframeId;\n        iframe.src = \"javascript:0\";\n      }\n\n      iframe.id = this.iframeId;\n\n      this.form.appendChild(iframe);\n      this.iframe = iframe;\n    };\n\n    initIframe();\n\n    // escape \\n to prevent it from being converted into \\r\\n by some UAs\n    // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side\n    data = data.replace(rEscapedNewline, \"\\\\\\n\");\n    this.area.value = data.replace(rNewline, \"\\\\n\");\n\n    try {\n      this.form.submit();\n    } catch (e) {}\n\n    if (this.iframe.attachEvent) {\n      this.iframe.onreadystatechange = () => {\n        if (this.iframe.readyState === \"complete\") {\n          complete();\n        }\n      };\n    } else {\n      this.iframe.onload = complete;\n    }\n  }\n}\n\nmodule.exports = JSONPPolling;\n","const Transport = require(\"../transport\");\nconst parser = require(\"engine.io-parser\");\nconst parseqs = require(\"parseqs\");\nconst yeast = require(\"yeast\");\nconst { pick } = require(\"../util\");\nconst {\n  WebSocket,\n  usingBrowserWebSocket,\n  defaultBinaryType,\n  nextTick\n} = require(\"./websocket-constructor\");\n\n\n\n\n// detect ReactNative environment\nconst isReactNative =\n  typeof navigator !== \"undefined\" &&\n  typeof navigator.product === \"string\" &&\n  navigator.product.toLowerCase() === \"reactnative\";\n\nclass WS extends Transport {\n  /**\n   * WebSocket transport constructor.\n   *\n   * @api {Object} connection options\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    this.supportsBinary = !opts.forceBase64;\n  }\n\n  /**\n   * Transport name.\n   *\n   * @api public\n   */\n  get name() {\n    return \"websocket\";\n  }\n\n  /**\n   * Opens socket.\n   *\n   * @api private\n   */\n  doOpen() {\n    if (!this.check()) {\n      // let probe timeout\n      return;\n    }\n\n    const uri = this.uri();\n    const protocols = this.opts.protocols;\n\n    // React Native only supports the 'headers' option, and will print a warning if anything else is passed\n    const opts = isReactNative\n      ? {}\n      : pick(\n          this.opts,\n          \"agent\",\n          \"perMessageDeflate\",\n          \"pfx\",\n          \"key\",\n          \"passphrase\",\n          \"cert\",\n          \"ca\",\n          \"ciphers\",\n          \"rejectUnauthorized\",\n          \"localAddress\",\n          \"protocolVersion\",\n          \"origin\",\n          \"maxPayload\",\n          \"family\",\n          \"checkServerIdentity\"\n        );\n\n    if (this.opts.extraHeaders) {\n      opts.headers = this.opts.extraHeaders;\n    }\n\n    try {\n      this.ws =\n        usingBrowserWebSocket && !isReactNative\n          ? protocols\n            ? new WebSocket(uri, protocols)\n            : new WebSocket(uri)\n          : new WebSocket(uri, protocols, opts);\n    } catch (err) {\n      return this.emit(\"error\", err);\n    }\n\n    this.ws.binaryType = this.socket.binaryType || defaultBinaryType;\n\n    this.addEventListeners();\n  }\n\n  /**\n   * Adds event listeners to the socket\n   *\n   * @api private\n   */\n  addEventListeners() {\n    this.ws.onopen = () => {\n      if (this.opts.autoUnref) {\n        this.ws._socket.unref();\n      }\n      this.onOpen();\n    };\n    this.ws.onclose = this.onClose.bind(this);\n    this.ws.onmessage = ev => this.onData(ev.data);\n    this.ws.onerror = e => this.onError(\"websocket error\", e);\n  }\n\n  /**\n   * Writes data to socket.\n   *\n   * @param {Array} array of packets.\n   * @api private\n   */\n  write(packets) {\n    this.writable = false;\n\n    // encodePacket efficient as it uses WS framing\n    // no need for encodePayload\n    for (let i = 0; i < packets.length; i++) {\n      const packet = packets[i];\n      const lastPacket = i === packets.length - 1;\n\n      parser.encodePacket(packet, this.supportsBinary, data => {\n        // always create a new object (GH-437)\n        const opts = {};\n        if (!usingBrowserWebSocket) {\n          if (packet.options) {\n            opts.compress = packet.options.compress;\n          }\n\n          if (this.opts.perMessageDeflate) {\n            const len =\n              \"string\" === typeof data ? Buffer.byteLength(data) : data.length;\n            if (len < this.opts.perMessageDeflate.threshold) {\n              opts.compress = false;\n            }\n          }\n        }\n\n        // Sometimes the websocket has already been closed but the browser didn't\n        // have a chance of informing us about it yet, in that case send will\n        // throw an error\n        try {\n          if (usingBrowserWebSocket) {\n            // TypeError is thrown when passing the second argument on Safari\n            this.ws.send(data);\n          } else {\n            this.ws.send(data, opts);\n          }\n        } catch (e) {\n\n\n        }\n\n        if (lastPacket) {\n          // fake drain\n          // defer to next tick to allow Socket to clear writeBuffer\n          nextTick(() => {\n            this.writable = true;\n            this.emit(\"drain\");\n          });\n        }\n      });\n    }\n  }\n\n  /**\n   * Called upon close\n   *\n   * @api private\n   */\n  onClose() {\n    Transport.prototype.onClose.call(this);\n  }\n\n  /**\n   * Closes socket.\n   *\n   * @api private\n   */\n  doClose() {\n    if (typeof this.ws !== \"undefined\") {\n      this.ws.close();\n      this.ws = null;\n    }\n  }\n\n  /**\n   * Generates uri for connection.\n   *\n   * @api private\n   */\n  uri() {\n    let query = this.query || {};\n    const schema = this.opts.secure ? \"wss\" : \"ws\";\n    let port = \"\";\n\n    // avoid port if default for schema\n    if (\n      this.opts.port &&\n      ((\"wss\" === schema && Number(this.opts.port) !== 443) ||\n        (\"ws\" === schema && Number(this.opts.port) !== 80))\n    ) {\n      port = \":\" + this.opts.port;\n    }\n\n    // append timestamp to URI\n    if (this.opts.timestampRequests) {\n      query[this.opts.timestampParam] = yeast();\n    }\n\n    // communicate binary support capabilities\n    if (!this.supportsBinary) {\n      query.b64 = 1;\n    }\n\n    query = parseqs.encode(query);\n\n    // prepend ? to query\n    if (query.length) {\n      query = \"?\" + query;\n    }\n\n    const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n    return (\n      schema +\n      \"://\" +\n      (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n      port +\n      this.opts.path +\n      query\n    );\n  }\n\n  /**\n   * Feature detection for WebSocket.\n   *\n   * @return {Boolean} whether this transport is available.\n   * @api public\n   */\n  check() {\n    return (\n      !!WebSocket &&\n      !(\"__initialize\" in WebSocket && this.name === WS.prototype.name)\n    );\n  }\n}\n\nmodule.exports = WS;\n","const globalThis = require(\"../globalThis\");\nconst nextTick = (() => {\n  const isPromiseAvailable =\n    typeof Promise === \"function\" && typeof Promise.resolve === \"function\";\n  if (isPromiseAvailable) {\n    return cb => Promise.resolve().then(cb);\n  } else {\n    return cb => setTimeout(cb, 0);\n  }\n})();\n\nmodule.exports = {\n  WebSocket: globalThis.WebSocket || globalThis.MozWebSocket,\n  usingBrowserWebSocket: true,\n  defaultBinaryType: \"arraybuffer\",\n  nextTick\n};\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.reconstructPacket = exports.deconstructPacket = void 0;\nconst is_binary_1 = require(\"./is-binary\");\n/**\n * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.\n *\n * @param {Object} packet - socket.io event packet\n * @return {Object} with deconstructed packet and list of buffers\n * @public\n */\nfunction deconstructPacket(packet) {\n    const buffers = [];\n    const packetData = packet.data;\n    const pack = packet;\n    pack.data = _deconstructPacket(packetData, buffers);\n    pack.attachments = buffers.length; // number of binary 'attachments'\n    return { packet: pack, buffers: buffers };\n}\nexports.deconstructPacket = deconstructPacket;\nfunction _deconstructPacket(data, buffers) {\n    if (!data)\n        return data;\n    if (is_binary_1.isBinary(data)) {\n        const placeholder = { _placeholder: true, num: buffers.length };\n        buffers.push(data);\n        return placeholder;\n    }\n    else if (Array.isArray(data)) {\n        const newData = new Array(data.length);\n        for (let i = 0; i < data.length; i++) {\n            newData[i] = _deconstructPacket(data[i], buffers);\n        }\n        return newData;\n    }\n    else if (typeof data === \"object\" && !(data instanceof Date)) {\n        const newData = {};\n        for (const key in data) {\n            if (data.hasOwnProperty(key)) {\n                newData[key] = _deconstructPacket(data[key], buffers);\n            }\n        }\n        return newData;\n    }\n    return data;\n}\n/**\n * Reconstructs a binary packet from its placeholder packet and buffers\n *\n * @param {Object} packet - event packet with placeholders\n * @param {Array} buffers - binary buffers to put in placeholder positions\n * @return {Object} reconstructed packet\n * @public\n */\nfunction reconstructPacket(packet, buffers) {\n    packet.data = _reconstructPacket(packet.data, buffers);\n    packet.attachments = undefined; // no longer useful\n    return packet;\n}\nexports.reconstructPacket = reconstructPacket;\nfunction _reconstructPacket(data, buffers) {\n    if (!data)\n        return data;\n    if (data && data._placeholder) {\n        return buffers[data.num]; // appropriate buffer (should be natural order anyway)\n    }\n    else if (Array.isArray(data)) {\n        for (let i = 0; i < data.length; i++) {\n            data[i] = _reconstructPacket(data[i], buffers);\n        }\n    }\n    else if (typeof data === \"object\") {\n        for (const key in data) {\n            if (data.hasOwnProperty(key)) {\n                data[key] = _reconstructPacket(data[key], buffers);\n            }\n        }\n    }\n    return data;\n}\n","\n/**\n * Expose `Backoff`.\n */\n\nmodule.exports = Backoff;\n\n/**\n * Initialize backoff timer with `opts`.\n *\n * - `min` initial timeout in milliseconds [100]\n * - `max` max timeout [10000]\n * - `jitter` [0]\n * - `factor` [2]\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction Backoff(opts) {\n  opts = opts || {};\n  this.ms = opts.min || 100;\n  this.max = opts.max || 10000;\n  this.factor = opts.factor || 2;\n  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;\n  this.attempts = 0;\n}\n\n/**\n * Return the backoff duration.\n *\n * @return {Number}\n * @api public\n */\n\nBackoff.prototype.duration = function(){\n  var ms = this.ms * Math.pow(this.factor, this.attempts++);\n  if (this.jitter) {\n    var rand =  Math.random();\n    var deviation = Math.floor(rand * this.jitter * ms);\n    ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;\n  }\n  return Math.min(ms, this.max) | 0;\n};\n\n/**\n * Reset the number of attempts.\n *\n * @api public\n */\n\nBackoff.prototype.reset = function(){\n  this.attempts = 0;\n};\n\n/**\n * Set the minimum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMin = function(min){\n  this.ms = min;\n};\n\n/**\n * Set the maximum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMax = function(max){\n  this.max = max;\n};\n\n/**\n * Set the jitter\n *\n * @api public\n */\n\nBackoff.prototype.setJitter = function(jitter){\n  this.jitter = jitter;\n};\n\n"],"sourceRoot":""}
\ No newline at end of file
diff --git a/client/lib/socket.io.msgpack.min.js b/client/lib/socket.io.msgpack.min.js
new file mode 100644
index 0000000..1c623e0
--- /dev/null
+++ b/client/lib/socket.io.msgpack.min.js
@@ -0,0 +1,7 @@
+/*!
+ * Socket.IO v4.1.3
+ * (c) 2014-2021 Guillermo Rauch
+ * Released under the MIT License.
+ */
+!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.io=e():t.io=e()}(self,(function(){return function(t){var e={};function n(r){if(e[r])return e[r].exports;var o=e[r]={i:r,l:!1,exports:{}};return t[r].call(o.exports,o,o.exports,n),o.l=!0,o.exports}return n.m=t,n.c=e,n.d=function(t,e,r){n.o(t,e)||Object.defineProperty(t,e,{enumerable:!0,get:r})},n.r=function(t){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(t,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(t,"__esModule",{value:!0})},n.t=function(t,e){if(1&e&&(t=n(t)),8&e)return t;if(4&e&&"object"==typeof t&&t&&t.__esModule)return t;var r=Object.create(null);if(n.r(r),Object.defineProperty(r,"default",{enumerable:!0,value:t}),2&e&&"string"!=typeof t)for(var o in t)n.d(r,o,function(e){return t[e]}.bind(null,o));return r},n.n=function(t){var e=t&&t.__esModule?function(){return t.default}:function(){return t};return n.d(e,"a",e),e},n.o=function(t,e){return Object.prototype.hasOwnProperty.call(t,e)},n.p="",n(n.s=17)}([function(t,e,n){var r=n(23),o=n(24),i=String.fromCharCode(30);t.exports={protocol:4,encodePacket:r,encodePayload:function(t,e){var n=t.length,o=new Array(n),s=0;t.forEach((function(t,c){r(t,!1,(function(t){o[c]=t,++s===n&&e(o.join(i))}))}))},decodePacket:o,decodePayload:function(t,e){for(var n=t.split(i),r=[],s=0;s<n.length;s++){var c=o(n[s],e);if(r.push(c),"error"===c.type)break}return r}}},function(t,e,n){function r(t){if(t)return function(t){for(var e in r.prototype)t[e]=r.prototype[e];return t}(t)}t.exports=r,r.prototype.on=r.prototype.addEventListener=function(t,e){return this._callbacks=this._callbacks||{},(this._callbacks["$"+t]=this._callbacks["$"+t]||[]).push(e),this},r.prototype.once=function(t,e){function n(){this.off(t,n),e.apply(this,arguments)}return n.fn=e,this.on(t,n),this},r.prototype.off=r.prototype.removeListener=r.prototype.removeAllListeners=r.prototype.removeEventListener=function(t,e){if(this._callbacks=this._callbacks||{},0==arguments.length)return this._callbacks={},this;var n,r=this._callbacks["$"+t];if(!r)return this;if(1==arguments.length)return delete this._callbacks["$"+t],this;for(var o=0;o<r.length;o++)if((n=r[o])===e||n.fn===e){r.splice(o,1);break}return 0===r.length&&delete this._callbacks["$"+t],this},r.prototype.emit=function(t){this._callbacks=this._callbacks||{};for(var e=new Array(arguments.length-1),n=this._callbacks["$"+t],r=1;r<arguments.length;r++)e[r-1]=arguments[r];if(n){r=0;for(var o=(n=n.slice(0)).length;r<o;++r)n[r].apply(this,e)}return this},r.prototype.listeners=function(t){return this._callbacks=this._callbacks||{},this._callbacks["$"+t]||[]},r.prototype.hasListeners=function(t){return!!this.listeners(t).length}},function(t,e){t.exports="undefined"!=typeof self?self:"undefined"!=typeof window?window:Function("return this")()},function(t,e,n){function r(t){return(r="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof Symbol&&t.constructor===Symbol&&t!==Symbol.prototype?"symbol":typeof t})(t)}function o(t,e){for(var n=0;n<e.length;n++){var r=e[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(t,r.key,r)}}function i(t,e){return(i=Object.setPrototypeOf||function(t,e){return t.__proto__=e,t})(t,e)}function s(t){var e=function(){if("undefined"==typeof Reflect||!Reflect.construct)return!1;if(Reflect.construct.sham)return!1;if("function"==typeof Proxy)return!0;try{return Boolean.prototype.valueOf.call(Reflect.construct(Boolean,[],(function(){}))),!0}catch(t){return!1}}();return function(){var n,r=a(t);if(e){var o=a(this).constructor;n=Reflect.construct(r,arguments,o)}else n=r.apply(this,arguments);return c(this,n)}}function c(t,e){return!e||"object"!==r(e)&&"function"!=typeof e?function(t){if(void 0===t)throw new ReferenceError("this hasn't been initialised - super() hasn't been called");return t}(t):e}function a(t){return(a=Object.setPrototypeOf?Object.getPrototypeOf:function(t){return t.__proto__||Object.getPrototypeOf(t)})(t)}var u=n(0),f=function(t){!function(t,e){if("function"!=typeof e&&null!==e)throw new TypeError("Super expression must either be null or a function");t.prototype=Object.create(e&&e.prototype,{constructor:{value:t,writable:!0,configurable:!0}}),e&&i(t,e)}(a,t);var e,n,r,c=s(a);function a(t){var e;return function(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}(this,a),(e=c.call(this)).opts=t,e.query=t.query,e.readyState="",e.socket=t.socket,e}return e=a,(n=[{key:"onError",value:function(t,e){var n=new Error(t);return n.type="TransportError",n.description=e,this.emit("error",n),this}},{key:"open",value:function(){return"closed"!==this.readyState&&""!==this.readyState||(this.readyState="opening",this.doOpen()),this}},{key:"close",value:function(){return"opening"!==this.readyState&&"open"!==this.readyState||(this.doClose(),this.onClose()),this}},{key:"send",value:function(t){"open"===this.readyState&&this.write(t)}},{key:"onOpen",value:function(){this.readyState="open",this.writable=!0,this.emit("open")}},{key:"onData",value:function(t){var e=u.decodePacket(t,this.socket.binaryType);this.onPacket(e)}},{key:"onPacket",value:function(t){this.emit("packet",t)}},{key:"onClose",value:function(){this.readyState="closed",this.emit("close")}}])&&o(e.prototype,n),r&&o(e,r),a}(n(1));t.exports=f},function(t,e){e.encode=function(t){var e="";for(var n in t)t.hasOwnProperty(n)&&(e.length&&(e+="&"),e+=encodeURIComponent(n)+"="+encodeURIComponent(t[n]));return e},e.decode=function(t){for(var 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this.connected||(this.subEvents(),this.io._reconnecting||this.io.open(),"open"===this.io._readyState&&this.onopen()),this}},{key:"open",value:function(){return this.connect()}},{key:"send",value:function(){for(var t=arguments.length,e=new Array(t),n=0;n<t;n++)e[n]=arguments[n];return e.unshift("message"),this.emit.apply(this,e),this}},{key:"emit",value:function(t){if(d.hasOwnProperty(t))throw new Error('"'+t+'" is a reserved event name');for(var e=arguments.length,n=new Array(e>1?e-1:0),r=1;r<e;r++)n[r-1]=arguments[r];n.unshift(t);var o={type:p.PacketType.EVENT,data:n,options:{}};o.options.compress=!1!==this.flags.compress,"function"==typeof n[n.length-1]&&(this.acks[this.ids]=n.pop(),o.id=this.ids++);var i=this.io.engine&&this.io.engine.transport&&this.io.engine.transport.writable,s=this.flags.volatile&&(!i||!this.connected);return s||(this.connected?this.packet(o):this.sendBuffer.push(o)),this.flags={},this}},{key:"packet",value:function(t){t.nsp=this.nsp,this.io._packet(t)}},{key:"onopen",value:function(){var t=this;"function"==typeof this.auth?this.auth((function(e){t.packet({type:p.PacketType.CONNECT,data:e})})):this.packet({type:p.PacketType.CONNECT,data:this.auth})}},{key:"onerror",value:function(t){this.connected||this.emitReserved("connect_error",t)}},{key:"onclose",value:function(t){this.connected=!1,this.disconnected=!0,delete this.id,this.emitReserved("disconnect",t)}},{key:"onpacket",value:function(t){if(t.nsp===this.nsp)switch(t.type){case p.PacketType.CONNECT:if(t.data&&t.data.sid){var e=t.data.sid;this.onconnect(e)}else this.emitReserved("connect_error",new Error("It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)"));break;case p.PacketType.EVENT:case p.PacketType.BINARY_EVENT:this.onevent(t);break;case p.PacketType.ACK:case p.PacketType.BINARY_ACK:this.onack(t);break;case p.PacketType.DISCONNECT:this.ondisconnect();break;case p.PacketType.CONNECT_ERROR:var n=new Error(t.data.message);n.data=t.data.data,this.emitReserved("connect_error",n)}}},{key:"onevent",value:function(t){var e=t.data||[];null!=t.id&&e.push(this.ack(t.id)),this.connected?this.emitEvent(e):this.receiveBuffer.push(Object.freeze(e))}},{key:"emitEvent",value:function(t){if(this._anyListeners&&this._anyListeners.length){var e,n=o(this._anyListeners.slice());try{for(n.s();!(e=n.n()).done;)e.value.apply(this,t)}catch(t){n.e(t)}finally{n.f()}}c(h(f.prototype),"emit",this).apply(this,t)}},{key:"ack",value:function(t){var e=this,n=!1;return function(){if(!n){n=!0;for(var r=arguments.length,o=new Array(r),i=0;i<r;i++)o[i]=arguments[i];e.packet({type:p.PacketType.ACK,id:t,data:o})}}}},{key:"onack",value:function(t){var e=this.acks[t.id];"function"==typeof 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diff --git a/client/lib/socket.io.msgpack.min.js.map b/client/lib/socket.io.msgpack.min.js.map
new file mode 100644
index 0000000..a6b111b
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return value when already ns object\n \t// mode & 8|1: behave like require\n \t__webpack_require__.t = function(value, mode) {\n \t\tif(mode & 1) value = __webpack_require__(value);\n \t\tif(mode & 8) return value;\n \t\tif((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;\n \t\tvar ns = Object.create(null);\n \t\t__webpack_require__.r(ns);\n \t\tObject.defineProperty(ns, 'default', { enumerable: true, value: value });\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 17);\n","const encodePacket = require(\"./encodePacket\");\nconst decodePacket = require(\"./decodePacket\");\n\nconst SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text\n\nconst encodePayload = (packets, callback) => {\n  // some packets may be added to the array while encoding, so the initial length must be saved\n  const length = packets.length;\n  const encodedPackets = new Array(length);\n  let count = 0;\n\n  packets.forEach((packet, i) => {\n    // force base64 encoding for binary packets\n    encodePacket(packet, false, encodedPacket => {\n      encodedPackets[i] = encodedPacket;\n      if (++count === length) {\n        callback(encodedPackets.join(SEPARATOR));\n      }\n    });\n  });\n};\n\nconst decodePayload = (encodedPayload, binaryType) => {\n  const encodedPackets = encodedPayload.split(SEPARATOR);\n  const packets = [];\n  for (let i = 0; i < encodedPackets.length; i++) {\n    const decodedPacket = decodePacket(encodedPackets[i], binaryType);\n    packets.push(decodedPacket);\n    if (decodedPacket.type === \"error\") {\n      break;\n    }\n  }\n  return packets;\n};\n\nmodule.exports = {\n  protocol: 4,\n  encodePacket,\n  encodePayload,\n  decodePacket,\n  decodePayload\n};\n","\r\n/**\r\n * Expose `Emitter`.\r\n */\r\n\r\nif (typeof module !== 'undefined') {\r\n  module.exports = Emitter;\r\n}\r\n\r\n/**\r\n * Initialize a new `Emitter`.\r\n *\r\n * @api public\r\n */\r\n\r\nfunction Emitter(obj) {\r\n  if (obj) return mixin(obj);\r\n};\r\n\r\n/**\r\n * Mixin the emitter properties.\r\n *\r\n * @param {Object} obj\r\n * @return {Object}\r\n * @api private\r\n */\r\n\r\nfunction mixin(obj) {\r\n  for (var key in Emitter.prototype) {\r\n    obj[key] = Emitter.prototype[key];\r\n  }\r\n  return obj;\r\n}\r\n\r\n/**\r\n * Listen on the given `event` with `fn`.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.on =\r\nEmitter.prototype.addEventListener = function(event, fn){\r\n  this._callbacks = this._callbacks || {};\r\n  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])\r\n    .push(fn);\r\n  return this;\r\n};\r\n\r\n/**\r\n * Adds an `event` listener that will be invoked a single\r\n * time then automatically removed.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.once = function(event, fn){\r\n  function on() {\r\n    this.off(event, on);\r\n    fn.apply(this, arguments);\r\n  }\r\n\r\n  on.fn = fn;\r\n  this.on(event, on);\r\n  return this;\r\n};\r\n\r\n/**\r\n * Remove the given callback for `event` or all\r\n * registered callbacks.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.off =\r\nEmitter.prototype.removeListener =\r\nEmitter.prototype.removeAllListeners =\r\nEmitter.prototype.removeEventListener = function(event, fn){\r\n  this._callbacks = this._callbacks || {};\r\n\r\n  // all\r\n  if (0 == arguments.length) {\r\n    this._callbacks = {};\r\n    return this;\r\n  }\r\n\r\n  // specific event\r\n  var callbacks = this._callbacks['$' + event];\r\n  if (!callbacks) return this;\r\n\r\n  // remove all handlers\r\n  if (1 == arguments.length) {\r\n    delete this._callbacks['$' + event];\r\n    return this;\r\n  }\r\n\r\n  // remove specific handler\r\n  var cb;\r\n  for (var i = 0; i < callbacks.length; i++) {\r\n    cb = callbacks[i];\r\n    if (cb === fn || cb.fn === fn) {\r\n      callbacks.splice(i, 1);\r\n      break;\r\n    }\r\n  }\r\n\r\n  // Remove event specific arrays for event types that no\r\n  // one is subscribed for to avoid memory leak.\r\n  if (callbacks.length === 0) {\r\n    delete this._callbacks['$' + event];\r\n  }\r\n\r\n  return this;\r\n};\r\n\r\n/**\r\n * Emit `event` with the given args.\r\n *\r\n * @param {String} event\r\n * @param {Mixed} ...\r\n * @return {Emitter}\r\n */\r\n\r\nEmitter.prototype.emit = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n\r\n  var args = new Array(arguments.length - 1)\r\n    , callbacks = this._callbacks['$' + event];\r\n\r\n  for (var i = 1; i < arguments.length; i++) {\r\n    args[i - 1] = arguments[i];\r\n  }\r\n\r\n  if (callbacks) {\r\n    callbacks = callbacks.slice(0);\r\n    for (var i = 0, len = callbacks.length; i < len; ++i) {\r\n      callbacks[i].apply(this, args);\r\n    }\r\n  }\r\n\r\n  return this;\r\n};\r\n\r\n/**\r\n * Return array of callbacks for `event`.\r\n *\r\n * @param {String} event\r\n * @return {Array}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.listeners = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n  return this._callbacks['$' + event] || [];\r\n};\r\n\r\n/**\r\n * Check if this emitter has `event` handlers.\r\n *\r\n * @param {String} event\r\n * @return {Boolean}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.hasListeners = function(event){\r\n  return !! this.listeners(event).length;\r\n};\r\n","module.exports = (() => {\n  if (typeof self !== \"undefined\") {\n    return self;\n  } else if (typeof window !== \"undefined\") {\n    return window;\n  } else {\n    return Function(\"return this\")();\n  }\n})();\n","const parser = require(\"engine.io-parser\");\nconst Emitter = require(\"component-emitter\");\n\n\n\nclass Transport extends Emitter {\n  /**\n   * Transport abstract constructor.\n   *\n   * @param {Object} options.\n   * @api private\n   */\n  constructor(opts) {\n    super();\n\n    this.opts = opts;\n    this.query = opts.query;\n    this.readyState = \"\";\n    this.socket = opts.socket;\n  }\n\n  /**\n   * Emits an error.\n   *\n   * @param {String} str\n   * @return {Transport} for chaining\n   * @api public\n   */\n  onError(msg, desc) {\n    const err = new Error(msg);\n    err.type = \"TransportError\";\n    err.description = desc;\n    this.emit(\"error\", err);\n    return this;\n  }\n\n  /**\n   * Opens the transport.\n   *\n   * @api public\n   */\n  open() {\n    if (\"closed\" === this.readyState || \"\" === this.readyState) {\n      this.readyState = \"opening\";\n      this.doOpen();\n    }\n\n    return this;\n  }\n\n  /**\n   * Closes the transport.\n   *\n   * @api private\n   */\n  close() {\n    if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n      this.doClose();\n      this.onClose();\n    }\n\n    return this;\n  }\n\n  /**\n   * Sends multiple packets.\n   *\n   * @param {Array} packets\n   * @api private\n   */\n  send(packets) {\n    if (\"open\" === this.readyState) {\n      this.write(packets);\n    } else {\n      // this might happen if the transport was silently closed in the beforeunload event handler\n\n\n    }\n  }\n\n  /**\n   * Called upon open\n   *\n   * @api private\n   */\n  onOpen() {\n    this.readyState = \"open\";\n    this.writable = true;\n    this.emit(\"open\");\n  }\n\n  /**\n   * Called with data.\n   *\n   * @param {String} data\n   * @api private\n   */\n  onData(data) {\n    const packet = parser.decodePacket(data, this.socket.binaryType);\n    this.onPacket(packet);\n  }\n\n  /**\n   * Called with a decoded packet.\n   */\n  onPacket(packet) {\n    this.emit(\"packet\", packet);\n  }\n\n  /**\n   * Called upon close.\n   *\n   * @api private\n   */\n  onClose() {\n    this.readyState = \"closed\";\n    this.emit(\"close\");\n  }\n}\n\nmodule.exports = Transport;\n","/**\n * Compiles a querystring\n * Returns string representation of the object\n *\n * @param {Object}\n * @api private\n */\n\nexports.encode = function (obj) {\n  var str = '';\n\n  for (var i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      if (str.length) str += '&';\n      str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);\n    }\n  }\n\n  return str;\n};\n\n/**\n * Parses a simple querystring into an object\n *\n * @param {String} qs\n * @api private\n */\n\nexports.decode = function(qs){\n  var qry = {};\n  var pairs = qs.split('&');\n  for (var i = 0, l = pairs.length; i < l; i++) {\n    var pair = pairs[i].split('=');\n    qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);\n  }\n  return qry;\n};\n","var msgpack = require(\"notepack.io\");\nvar Emitter = require(\"component-emitter\");\n\nexports.protocol = 5;\n\n/**\n * Packet types (see https://github.com/socketio/socket.io-protocol)\n */\n\nvar PacketType = (exports.PacketType = {\n  CONNECT: 0,\n  DISCONNECT: 1,\n  EVENT: 2,\n  ACK: 3,\n  CONNECT_ERROR: 4,\n});\n\nvar isInteger =\n  Number.isInteger ||\n  function (value) {\n    return (\n      typeof value === \"number\" &&\n      isFinite(value) &&\n      Math.floor(value) === value\n    );\n  };\n\nvar isString = function (value) {\n  return typeof value === \"string\";\n};\n\nvar isObject = function (value) {\n  return Object.prototype.toString.call(value) === \"[object Object]\";\n};\n\nfunction Encoder() {}\n\nEncoder.prototype.encode = function (packet) {\n  return [msgpack.encode(packet)];\n};\n\nfunction Decoder() {}\n\nEmitter(Decoder.prototype);\n\nDecoder.prototype.add = function (obj) {\n  var decoded = msgpack.decode(obj);\n  this.checkPacket(decoded);\n  this.emit(\"decoded\", decoded);\n};\n\nfunction isDataValid(decoded) {\n  switch (decoded.type) {\n    case PacketType.CONNECT:\n      return decoded.data === undefined || isObject(decoded.data);\n    case PacketType.DISCONNECT:\n      return decoded.data === undefined;\n    case PacketType.CONNECT_ERROR:\n      return isString(decoded.data) || isObject(decoded.data);\n    default:\n      return Array.isArray(decoded.data);\n  }\n}\n\nDecoder.prototype.checkPacket = function (decoded) {\n  var isTypeValid =\n    isInteger(decoded.type) &&\n    decoded.type >= PacketType.CONNECT &&\n    decoded.type <= PacketType.CONNECT_ERROR;\n  if (!isTypeValid) {\n    throw new Error(\"invalid packet type\");\n  }\n\n  if (!isString(decoded.nsp)) {\n    throw new Error(\"invalid namespace\");\n  }\n\n  if (!isDataValid(decoded)) {\n    throw new Error(\"invalid payload\");\n  }\n\n  var isAckValid = decoded.id === undefined || isInteger(decoded.id);\n  if (!isAckValid) {\n    throw new Error(\"invalid packet id\");\n  }\n};\n\nDecoder.prototype.destroy = function () {};\n\nexports.Encoder = Encoder;\nexports.Decoder = Decoder;\n","/**\n * Parses an URI\n *\n * @author Steven Levithan <stevenlevithan.com> (MIT license)\n * @api private\n */\n\nvar re = /^(?:(?![^:@]+:[^:@\\/]*@)(http|https|ws|wss):\\/\\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\\/?#]*)(?::(\\d*))?)(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))(?:\\?([^#]*))?(?:#(.*))?)/;\n\nvar parts = [\n    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'\n];\n\nmodule.exports = function parseuri(str) {\n    var src = str,\n        b = str.indexOf('['),\n        e = str.indexOf(']');\n\n    if (b != -1 && e != -1) {\n        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);\n    }\n\n    var m = re.exec(str || ''),\n        uri = {},\n        i = 14;\n\n    while (i--) {\n        uri[parts[i]] = m[i] || '';\n    }\n\n    if (b != -1 && e != -1) {\n        uri.source = src;\n        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');\n        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');\n        uri.ipv6uri = true;\n    }\n\n    uri.pathNames = pathNames(uri, uri['path']);\n    uri.queryKey = queryKey(uri, uri['query']);\n\n    return uri;\n};\n\nfunction pathNames(obj, path) {\n    var regx = /\\/{2,9}/g,\n        names = path.replace(regx, \"/\").split(\"/\");\n\n    if (path.substr(0, 1) == '/' || path.length === 0) {\n        names.splice(0, 1);\n    }\n    if (path.substr(path.length - 1, 1) == '/') {\n        names.splice(names.length - 1, 1);\n    }\n\n    return names;\n}\n\nfunction queryKey(uri, query) {\n    var data = {};\n\n    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {\n        if ($1) {\n            data[$1] = $2;\n        }\n    });\n\n    return data;\n}\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Manager = void 0;\nconst eio = require(\"engine.io-client\");\nconst socket_1 = require(\"./socket\");\nconst parser = require(\"socket.io-parser\");\nconst on_1 = require(\"./on\");\nconst Backoff = require(\"backo2\");\nconst typed_events_1 = require(\"./typed-events\");\n\n\nclass Manager extends typed_events_1.StrictEventEmitter {\n    constructor(uri, opts) {\n        super();\n        this.nsps = {};\n        this.subs = [];\n        if (uri && \"object\" === typeof uri) {\n            opts = uri;\n            uri = undefined;\n        }\n        opts = opts || {};\n        opts.path = opts.path || \"/socket.io\";\n        this.opts = opts;\n        this.reconnection(opts.reconnection !== false);\n        this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);\n        this.reconnectionDelay(opts.reconnectionDelay || 1000);\n        this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);\n        this.randomizationFactor(opts.randomizationFactor || 0.5);\n        this.backoff = new Backoff({\n            min: this.reconnectionDelay(),\n            max: this.reconnectionDelayMax(),\n            jitter: this.randomizationFactor(),\n        });\n        this.timeout(null == opts.timeout ? 20000 : opts.timeout);\n        this._readyState = \"closed\";\n        this.uri = uri;\n        const _parser = opts.parser || parser;\n        this.encoder = new _parser.Encoder();\n        this.decoder = new _parser.Decoder();\n        this._autoConnect = opts.autoConnect !== false;\n        if (this._autoConnect)\n            this.open();\n    }\n    reconnection(v) {\n        if (!arguments.length)\n            return this._reconnection;\n        this._reconnection = !!v;\n        return this;\n    }\n    reconnectionAttempts(v) {\n        if (v === undefined)\n            return this._reconnectionAttempts;\n        this._reconnectionAttempts = v;\n        return this;\n    }\n    reconnectionDelay(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelay;\n        this._reconnectionDelay = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMin(v);\n        return this;\n    }\n    randomizationFactor(v) {\n        var _a;\n        if (v === undefined)\n            return this._randomizationFactor;\n        this._randomizationFactor = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);\n        return this;\n    }\n    reconnectionDelayMax(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelayMax;\n        this._reconnectionDelayMax = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);\n        return this;\n    }\n    timeout(v) {\n        if (!arguments.length)\n            return this._timeout;\n        this._timeout = v;\n        return this;\n    }\n    /**\n     * Starts trying to reconnect if reconnection is enabled and we have not\n     * started reconnecting yet\n     *\n     * @private\n     */\n    maybeReconnectOnOpen() {\n        // Only try to reconnect if it's the first time we're connecting\n        if (!this._reconnecting &&\n            this._reconnection &&\n            this.backoff.attempts === 0) {\n            // keeps reconnection from firing twice for the same reconnection loop\n            this.reconnect();\n        }\n    }\n    /**\n     * Sets the current transport `socket`.\n     *\n     * @param {Function} fn - optional, callback\n     * @return self\n     * @public\n     */\n    open(fn) {\n\n\n        if (~this._readyState.indexOf(\"open\"))\n            return this;\n\n\n        this.engine = eio(this.uri, this.opts);\n        const socket = this.engine;\n        const self = this;\n        this._readyState = \"opening\";\n        this.skipReconnect = false;\n        // emit `open`\n        const openSubDestroy = on_1.on(socket, \"open\", function () {\n            self.onopen();\n            fn && fn();\n        });\n        // emit `error`\n        const errorSub = on_1.on(socket, \"error\", (err) => {\n\n\n            self.cleanup();\n            self._readyState = \"closed\";\n            this.emitReserved(\"error\", err);\n            if (fn) {\n                fn(err);\n            }\n            else {\n                // Only do this if there is no fn to handle the error\n                self.maybeReconnectOnOpen();\n            }\n        });\n        if (false !== this._timeout) {\n            const timeout = this._timeout;\n\n\n            if (timeout === 0) {\n                openSubDestroy(); // prevents a race condition with the 'open' event\n            }\n            // set timer\n            const timer = setTimeout(() => {\n\n\n                openSubDestroy();\n                socket.close();\n                socket.emit(\"error\", new Error(\"timeout\"));\n            }, timeout);\n            if (this.opts.autoUnref) {\n                timer.unref();\n            }\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n        this.subs.push(openSubDestroy);\n        this.subs.push(errorSub);\n        return this;\n    }\n    /**\n     * Alias for open()\n     *\n     * @return self\n     * @public\n     */\n    connect(fn) {\n        return this.open(fn);\n    }\n    /**\n     * Called upon transport open.\n     *\n     * @private\n     */\n    onopen() {\n\n\n        // clear old subs\n        this.cleanup();\n        // mark as open\n        this._readyState = \"open\";\n        this.emitReserved(\"open\");\n        // add new subs\n        const socket = this.engine;\n        this.subs.push(on_1.on(socket, \"ping\", this.onping.bind(this)), on_1.on(socket, \"data\", this.ondata.bind(this)), on_1.on(socket, \"error\", this.onerror.bind(this)), on_1.on(socket, \"close\", this.onclose.bind(this)), on_1.on(this.decoder, \"decoded\", this.ondecoded.bind(this)));\n    }\n    /**\n     * Called upon a ping.\n     *\n     * @private\n     */\n    onping() {\n        this.emitReserved(\"ping\");\n    }\n    /**\n     * Called with data.\n     *\n     * @private\n     */\n    ondata(data) {\n        this.decoder.add(data);\n    }\n    /**\n     * Called when parser fully decodes a packet.\n     *\n     * @private\n     */\n    ondecoded(packet) {\n        this.emitReserved(\"packet\", packet);\n    }\n    /**\n     * Called upon socket error.\n     *\n     * @private\n     */\n    onerror(err) {\n\n\n        this.emitReserved(\"error\", err);\n    }\n    /**\n     * Creates a new socket for the given `nsp`.\n     *\n     * @return {Socket}\n     * @public\n     */\n    socket(nsp, opts) {\n        let socket = this.nsps[nsp];\n        if (!socket) {\n            socket = new socket_1.Socket(this, nsp, opts);\n            this.nsps[nsp] = socket;\n        }\n        return socket;\n    }\n    /**\n     * Called upon a socket close.\n     *\n     * @param socket\n     * @private\n     */\n    _destroy(socket) {\n        const nsps = Object.keys(this.nsps);\n        for (const nsp of nsps) {\n            const socket = this.nsps[nsp];\n            if (socket.active) {\n\n\n                return;\n            }\n        }\n        this._close();\n    }\n    /**\n     * Writes a packet.\n     *\n     * @param packet\n     * @private\n     */\n    _packet(packet) {\n\n\n        const encodedPackets = this.encoder.encode(packet);\n        for (let i = 0; i < encodedPackets.length; i++) {\n            this.engine.write(encodedPackets[i], packet.options);\n        }\n    }\n    /**\n     * Clean up transport subscriptions and packet buffer.\n     *\n     * @private\n     */\n    cleanup() {\n\n\n        this.subs.forEach((subDestroy) => subDestroy());\n        this.subs.length = 0;\n        this.decoder.destroy();\n    }\n    /**\n     * Close the current socket.\n     *\n     * @private\n     */\n    _close() {\n\n\n        this.skipReconnect = true;\n        this._reconnecting = false;\n        if (\"opening\" === this._readyState) {\n            // `onclose` will not fire because\n            // an open event never happened\n            this.cleanup();\n        }\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        if (this.engine)\n            this.engine.close();\n    }\n    /**\n     * Alias for close()\n     *\n     * @private\n     */\n    disconnect() {\n        return this._close();\n    }\n    /**\n     * Called upon engine close.\n     *\n     * @private\n     */\n    onclose(reason) {\n\n\n        this.cleanup();\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        this.emitReserved(\"close\", reason);\n        if (this._reconnection && !this.skipReconnect) {\n            this.reconnect();\n        }\n    }\n    /**\n     * Attempt a reconnection.\n     *\n     * @private\n     */\n    reconnect() {\n        if (this._reconnecting || this.skipReconnect)\n            return this;\n        const self = this;\n        if (this.backoff.attempts >= this._reconnectionAttempts) {\n\n\n            this.backoff.reset();\n            this.emitReserved(\"reconnect_failed\");\n            this._reconnecting = false;\n        }\n        else {\n            const delay = this.backoff.duration();\n\n\n            this._reconnecting = true;\n            const timer = setTimeout(() => {\n                if (self.skipReconnect)\n                    return;\n\n\n                this.emitReserved(\"reconnect_attempt\", self.backoff.attempts);\n                // check again for the case socket closed in above events\n                if (self.skipReconnect)\n                    return;\n                self.open((err) => {\n                    if (err) {\n\n\n                        self._reconnecting = false;\n                        self.reconnect();\n                        this.emitReserved(\"reconnect_error\", err);\n                    }\n                    else {\n\n\n                        self.onreconnect();\n                    }\n                });\n            }, delay);\n            if (this.opts.autoUnref) {\n                timer.unref();\n            }\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n    }\n    /**\n     * Called upon successful reconnect.\n     *\n     * @private\n     */\n    onreconnect() {\n        const attempt = this.backoff.attempts;\n        this._reconnecting = false;\n        this.backoff.reset();\n        this.emitReserved(\"reconnect\", attempt);\n    }\n}\nexports.Manager = Manager;\n","const XMLHttpRequest = require(\"../../contrib/xmlhttprequest-ssl/XMLHttpRequest\");\nconst XHR = require(\"./polling-xhr\");\nconst JSONP = require(\"./polling-jsonp\");\nconst websocket = require(\"./websocket\");\n\nexports.polling = polling;\nexports.websocket = websocket;\n\n/**\n * Polling transport polymorphic constructor.\n * Decides on xhr vs jsonp based on feature detection.\n *\n * @api private\n */\n\nfunction polling(opts) {\n  let xhr;\n  let xd = false;\n  let xs = false;\n  const jsonp = false !== opts.jsonp;\n\n  if (typeof location !== \"undefined\") {\n    const isSSL = \"https:\" === location.protocol;\n    let port = location.port;\n\n    // some user agents have empty `location.port`\n    if (!port) {\n      port = isSSL ? 443 : 80;\n    }\n\n    xd = opts.hostname !== location.hostname || port !== opts.port;\n    xs = opts.secure !== isSSL;\n  }\n\n  opts.xdomain = xd;\n  opts.xscheme = xs;\n  xhr = new XMLHttpRequest(opts);\n\n  if (\"open\" in xhr && !opts.forceJSONP) {\n    return new XHR(opts);\n  } else {\n    if (!jsonp) throw new Error(\"JSONP disabled\");\n    return new JSONP(opts);\n  }\n}\n","// browser shim for xmlhttprequest module\n\nconst hasCORS = require(\"has-cors\");\nconst globalThis = require(\"./globalThis\");\n\nmodule.exports = function(opts) {\n  const xdomain = opts.xdomain;\n\n  // scheme must be same when usign XDomainRequest\n  // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx\n  const xscheme = opts.xscheme;\n\n  // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.\n  // https://github.com/Automattic/engine.io-client/pull/217\n  const enablesXDR = opts.enablesXDR;\n\n  // XMLHttpRequest can be disabled on IE\n  try {\n    if (\"undefined\" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {\n      return new XMLHttpRequest();\n    }\n  } catch (e) {}\n\n  // Use XDomainRequest for IE8 if enablesXDR is true\n  // because loading bar keeps flashing when using jsonp-polling\n  // https://github.com/yujiosaka/socke.io-ie8-loading-example\n  try {\n    if (\"undefined\" !== typeof XDomainRequest && !xscheme && enablesXDR) {\n      return new XDomainRequest();\n    }\n  } catch (e) {}\n\n  if (!xdomain) {\n    try {\n      return new globalThis[[\"Active\"].concat(\"Object\").join(\"X\")](\n        \"Microsoft.XMLHTTP\"\n      );\n    } catch (e) {}\n  }\n};\n","const Transport = require(\"../transport\");\nconst parseqs = require(\"parseqs\");\nconst parser = require(\"engine.io-parser\");\nconst yeast = require(\"yeast\");\n\n\n\n\nclass Polling extends Transport {\n  /**\n   * Transport name.\n   */\n  get name() {\n    return \"polling\";\n  }\n\n  /**\n   * Opens the socket (triggers polling). We write a PING message to determine\n   * when the transport is open.\n   *\n   * @api private\n   */\n  doOpen() {\n    this.poll();\n  }\n\n  /**\n   * Pauses polling.\n   *\n   * @param {Function} callback upon buffers are flushed and transport is paused\n   * @api private\n   */\n  pause(onPause) {\n    this.readyState = \"pausing\";\n\n    const pause = () => {\n\n\n      this.readyState = \"paused\";\n      onPause();\n    };\n\n    if (this.polling || !this.writable) {\n      let total = 0;\n\n      if (this.polling) {\n\n\n        total++;\n        this.once(\"pollComplete\", function() {\n\n\n          --total || pause();\n        });\n      }\n\n      if (!this.writable) {\n\n\n        total++;\n        this.once(\"drain\", function() {\n\n\n          --total || pause();\n        });\n      }\n    } else {\n      pause();\n    }\n  }\n\n  /**\n   * Starts polling cycle.\n   *\n   * @api public\n   */\n  poll() {\n\n\n    this.polling = true;\n    this.doPoll();\n    this.emit(\"poll\");\n  }\n\n  /**\n   * Overloads onData to detect payloads.\n   *\n   * @api private\n   */\n  onData(data) {\n\n\n    const callback = packet => {\n      // if its the first message we consider the transport open\n      if (\"opening\" === this.readyState && packet.type === \"open\") {\n        this.onOpen();\n      }\n\n      // if its a close packet, we close the ongoing requests\n      if (\"close\" === packet.type) {\n        this.onClose();\n        return false;\n      }\n\n      // otherwise bypass onData and handle the message\n      this.onPacket(packet);\n    };\n\n    // decode payload\n    parser.decodePayload(data, this.socket.binaryType).forEach(callback);\n\n    // if an event did not trigger closing\n    if (\"closed\" !== this.readyState) {\n      // if we got data we're not polling\n      this.polling = false;\n      this.emit(\"pollComplete\");\n\n      if (\"open\" === this.readyState) {\n        this.poll();\n      } else {\n\n\n      }\n    }\n  }\n\n  /**\n   * For polling, send a close packet.\n   *\n   * @api private\n   */\n  doClose() {\n    const close = () => {\n\n\n      this.write([{ type: \"close\" }]);\n    };\n\n    if (\"open\" === this.readyState) {\n\n\n      close();\n    } else {\n      // in case we're trying to close while\n      // handshaking is in progress (GH-164)\n\n\n      this.once(\"open\", close);\n    }\n  }\n\n  /**\n   * Writes a packets payload.\n   *\n   * @param {Array} data packets\n   * @param {Function} drain callback\n   * @api private\n   */\n  write(packets) {\n    this.writable = false;\n\n    parser.encodePayload(packets, data => {\n      this.doWrite(data, () => {\n        this.writable = true;\n        this.emit(\"drain\");\n      });\n    });\n  }\n\n  /**\n   * Generates uri for connection.\n   *\n   * @api private\n   */\n  uri() {\n    let query = this.query || {};\n    const schema = this.opts.secure ? \"https\" : \"http\";\n    let port = \"\";\n\n    // cache busting is forced\n    if (false !== this.opts.timestampRequests) {\n      query[this.opts.timestampParam] = yeast();\n    }\n\n    if (!this.supportsBinary && !query.sid) {\n      query.b64 = 1;\n    }\n\n    query = parseqs.encode(query);\n\n    // avoid port if default for schema\n    if (\n      this.opts.port &&\n      ((\"https\" === schema && Number(this.opts.port) !== 443) ||\n        (\"http\" === schema && Number(this.opts.port) !== 80))\n    ) {\n      port = \":\" + this.opts.port;\n    }\n\n    // prepend ? to query\n    if (query.length) {\n      query = \"?\" + query;\n    }\n\n    const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n    return (\n      schema +\n      \"://\" +\n      (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n      port +\n      this.opts.path +\n      query\n    );\n  }\n}\n\nmodule.exports = Polling;\n","const PACKET_TYPES = Object.create(null); // no Map = no polyfill\nPACKET_TYPES[\"open\"] = \"0\";\nPACKET_TYPES[\"close\"] = \"1\";\nPACKET_TYPES[\"ping\"] = \"2\";\nPACKET_TYPES[\"pong\"] = \"3\";\nPACKET_TYPES[\"message\"] = \"4\";\nPACKET_TYPES[\"upgrade\"] = \"5\";\nPACKET_TYPES[\"noop\"] = \"6\";\n\nconst PACKET_TYPES_REVERSE = Object.create(null);\nObject.keys(PACKET_TYPES).forEach(key => {\n  PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;\n});\n\nconst ERROR_PACKET = { type: \"error\", data: \"parser error\" };\n\nmodule.exports = {\n  PACKET_TYPES,\n  PACKET_TYPES_REVERSE,\n  ERROR_PACKET\n};\n","'use strict';\n\nvar alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')\n  , length = 64\n  , map = {}\n  , seed = 0\n  , i = 0\n  , prev;\n\n/**\n * Return a string representing the specified number.\n *\n * @param {Number} num The number to convert.\n * @returns {String} The string representation of the number.\n * @api public\n */\nfunction encode(num) {\n  var encoded = '';\n\n  do {\n    encoded = alphabet[num % length] + encoded;\n    num = Math.floor(num / length);\n  } while (num > 0);\n\n  return encoded;\n}\n\n/**\n * Return the integer value specified by the given string.\n *\n * @param {String} str The string to convert.\n * @returns {Number} The integer value represented by the string.\n * @api public\n */\nfunction decode(str) {\n  var decoded = 0;\n\n  for (i = 0; i < str.length; i++) {\n    decoded = decoded * length + map[str.charAt(i)];\n  }\n\n  return decoded;\n}\n\n/**\n * Yeast: A tiny growing id generator.\n *\n * @returns {String} A unique id.\n * @api public\n */\nfunction yeast() {\n  var now = encode(+new Date());\n\n  if (now !== prev) return seed = 0, prev = now;\n  return now +'.'+ encode(seed++);\n}\n\n//\n// Map each character to its index.\n//\nfor (; i < length; i++) map[alphabet[i]] = i;\n\n//\n// Expose the `yeast`, `encode` and `decode` functions.\n//\nyeast.encode = encode;\nyeast.decode = decode;\nmodule.exports = yeast;\n","module.exports.pick = (obj, ...attr) => {\n  return attr.reduce((acc, k) => {\n    if (obj.hasOwnProperty(k)) {\n      acc[k] = obj[k];\n    }\n    return acc;\n  }, {});\n};\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Socket = void 0;\nconst socket_io_parser_1 = require(\"socket.io-parser\");\nconst on_1 = require(\"./on\");\nconst typed_events_1 = require(\"./typed-events\");\n\n\n/**\n * Internal events.\n * These events can't be emitted by the user.\n */\nconst RESERVED_EVENTS = Object.freeze({\n    connect: 1,\n    connect_error: 1,\n    disconnect: 1,\n    disconnecting: 1,\n    // EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener\n    newListener: 1,\n    removeListener: 1,\n});\nclass Socket extends typed_events_1.StrictEventEmitter {\n    /**\n     * `Socket` constructor.\n     *\n     * @public\n     */\n    constructor(io, nsp, opts) {\n        super();\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.ids = 0;\n        this.acks = {};\n        this.flags = {};\n        this.io = io;\n        this.nsp = nsp;\n        this.ids = 0;\n        this.acks = {};\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.connected = false;\n        this.disconnected = true;\n        this.flags = {};\n        if (opts && opts.auth) {\n            this.auth = opts.auth;\n        }\n        if (this.io._autoConnect)\n            this.open();\n    }\n    /**\n     * Subscribe to open, close and packet events\n     *\n     * @private\n     */\n    subEvents() {\n        if (this.subs)\n            return;\n        const io = this.io;\n        this.subs = [\n            on_1.on(io, \"open\", this.onopen.bind(this)),\n            on_1.on(io, \"packet\", this.onpacket.bind(this)),\n            on_1.on(io, \"error\", this.onerror.bind(this)),\n            on_1.on(io, \"close\", this.onclose.bind(this)),\n        ];\n    }\n    /**\n     * Whether the Socket will try to reconnect when its Manager connects or reconnects\n     */\n    get active() {\n        return !!this.subs;\n    }\n    /**\n     * \"Opens\" the socket.\n     *\n     * @public\n     */\n    connect() {\n        if (this.connected)\n            return this;\n        this.subEvents();\n        if (!this.io[\"_reconnecting\"])\n            this.io.open(); // ensure open\n        if (\"open\" === this.io._readyState)\n            this.onopen();\n        return this;\n    }\n    /**\n     * Alias for connect()\n     */\n    open() {\n        return this.connect();\n    }\n    /**\n     * Sends a `message` event.\n     *\n     * @return self\n     * @public\n     */\n    send(...args) {\n        args.unshift(\"message\");\n        this.emit.apply(this, args);\n        return this;\n    }\n    /**\n     * Override `emit`.\n     * If the event is in `events`, it's emitted normally.\n     *\n     * @return self\n     * @public\n     */\n    emit(ev, ...args) {\n        if (RESERVED_EVENTS.hasOwnProperty(ev)) {\n            throw new Error('\"' + ev + '\" is a reserved event name');\n        }\n        args.unshift(ev);\n        const packet = {\n            type: socket_io_parser_1.PacketType.EVENT,\n            data: args,\n        };\n        packet.options = {};\n        packet.options.compress = this.flags.compress !== false;\n        // event ack callback\n        if (\"function\" === typeof args[args.length - 1]) {\n\n\n            this.acks[this.ids] = args.pop();\n            packet.id = this.ids++;\n        }\n        const isTransportWritable = this.io.engine &&\n            this.io.engine.transport &&\n            this.io.engine.transport.writable;\n        const discardPacket = this.flags.volatile && (!isTransportWritable || !this.connected);\n        if (discardPacket) {\n\n\n        }\n        else if (this.connected) {\n            this.packet(packet);\n        }\n        else {\n            this.sendBuffer.push(packet);\n        }\n        this.flags = {};\n        return this;\n    }\n    /**\n     * Sends a packet.\n     *\n     * @param packet\n     * @private\n     */\n    packet(packet) {\n        packet.nsp = this.nsp;\n        this.io._packet(packet);\n    }\n    /**\n     * Called upon engine `open`.\n     *\n     * @private\n     */\n    onopen() {\n\n\n        if (typeof this.auth == \"function\") {\n            this.auth((data) => {\n                this.packet({ type: socket_io_parser_1.PacketType.CONNECT, data });\n            });\n        }\n        else {\n            this.packet({ type: socket_io_parser_1.PacketType.CONNECT, data: this.auth });\n        }\n    }\n    /**\n     * Called upon engine or manager `error`.\n     *\n     * @param err\n     * @private\n     */\n    onerror(err) {\n        if (!this.connected) {\n            this.emitReserved(\"connect_error\", err);\n        }\n    }\n    /**\n     * Called upon engine `close`.\n     *\n     * @param reason\n     * @private\n     */\n    onclose(reason) {\n\n\n        this.connected = false;\n        this.disconnected = true;\n        delete this.id;\n        this.emitReserved(\"disconnect\", reason);\n    }\n    /**\n     * Called with socket packet.\n     *\n     * @param packet\n     * @private\n     */\n    onpacket(packet) {\n        const sameNamespace = packet.nsp === this.nsp;\n        if (!sameNamespace)\n            return;\n        switch (packet.type) {\n            case socket_io_parser_1.PacketType.CONNECT:\n                if (packet.data && packet.data.sid) {\n                    const id = packet.data.sid;\n                    this.onconnect(id);\n                }\n                else {\n                    this.emitReserved(\"connect_error\", new Error(\"It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)\"));\n                }\n                break;\n            case socket_io_parser_1.PacketType.EVENT:\n                this.onevent(packet);\n                break;\n            case socket_io_parser_1.PacketType.BINARY_EVENT:\n                this.onevent(packet);\n                break;\n            case socket_io_parser_1.PacketType.ACK:\n                this.onack(packet);\n                break;\n            case socket_io_parser_1.PacketType.BINARY_ACK:\n                this.onack(packet);\n                break;\n            case socket_io_parser_1.PacketType.DISCONNECT:\n                this.ondisconnect();\n                break;\n            case socket_io_parser_1.PacketType.CONNECT_ERROR:\n                const err = new Error(packet.data.message);\n                // @ts-ignore\n                err.data = packet.data.data;\n                this.emitReserved(\"connect_error\", err);\n                break;\n        }\n    }\n    /**\n     * Called upon a server event.\n     *\n     * @param packet\n     * @private\n     */\n    onevent(packet) {\n        const args = packet.data || [];\n\n\n        if (null != packet.id) {\n\n\n            args.push(this.ack(packet.id));\n        }\n        if (this.connected) {\n            this.emitEvent(args);\n        }\n        else {\n            this.receiveBuffer.push(Object.freeze(args));\n        }\n    }\n    emitEvent(args) {\n        if (this._anyListeners && this._anyListeners.length) {\n            const listeners = this._anyListeners.slice();\n            for (const listener of listeners) {\n                listener.apply(this, args);\n            }\n        }\n        super.emit.apply(this, args);\n    }\n    /**\n     * Produces an ack callback to emit with an event.\n     *\n     * @private\n     */\n    ack(id) {\n        const self = this;\n        let sent = false;\n        return function (...args) {\n            // prevent double callbacks\n            if (sent)\n                return;\n            sent = true;\n\n\n            self.packet({\n                type: socket_io_parser_1.PacketType.ACK,\n                id: id,\n                data: args,\n            });\n        };\n    }\n    /**\n     * Called upon a server acknowlegement.\n     *\n     * @param packet\n     * @private\n     */\n    onack(packet) {\n        const ack = this.acks[packet.id];\n        if (\"function\" === typeof ack) {\n\n\n            ack.apply(this, packet.data);\n            delete this.acks[packet.id];\n        }\n        else {\n\n\n        }\n    }\n    /**\n     * Called upon server connect.\n     *\n     * @private\n     */\n    onconnect(id) {\n\n\n        this.id = id;\n        this.connected = true;\n        this.disconnected = false;\n        this.emitBuffered();\n        this.emitReserved(\"connect\");\n    }\n    /**\n     * Emit buffered events (received and emitted).\n     *\n     * @private\n     */\n    emitBuffered() {\n        this.receiveBuffer.forEach((args) => this.emitEvent(args));\n        this.receiveBuffer = [];\n        this.sendBuffer.forEach((packet) => this.packet(packet));\n        this.sendBuffer = [];\n    }\n    /**\n     * Called upon server disconnect.\n     *\n     * @private\n     */\n    ondisconnect() {\n\n\n        this.destroy();\n        this.onclose(\"io server disconnect\");\n    }\n    /**\n     * Called upon forced client/server side disconnections,\n     * this method ensures the manager stops tracking us and\n     * that reconnections don't get triggered for this.\n     *\n     * @private\n     */\n    destroy() {\n        if (this.subs) {\n            // clean subscriptions to avoid reconnections\n            this.subs.forEach((subDestroy) => subDestroy());\n            this.subs = undefined;\n        }\n        this.io[\"_destroy\"](this);\n    }\n    /**\n     * Disconnects the socket manually.\n     *\n     * @return self\n     * @public\n     */\n    disconnect() {\n        if (this.connected) {\n\n\n            this.packet({ type: socket_io_parser_1.PacketType.DISCONNECT });\n        }\n        // remove socket from pool\n        this.destroy();\n        if (this.connected) {\n            // fire events\n            this.onclose(\"io client disconnect\");\n        }\n        return this;\n    }\n    /**\n     * Alias for disconnect()\n     *\n     * @return self\n     * @public\n     */\n    close() {\n        return this.disconnect();\n    }\n    /**\n     * Sets the compress flag.\n     *\n     * @param compress - if `true`, compresses the sending data\n     * @return self\n     * @public\n     */\n    compress(compress) {\n        this.flags.compress = compress;\n        return this;\n    }\n    /**\n     * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not\n     * ready to send messages.\n     *\n     * @returns self\n     * @public\n     */\n    get volatile() {\n        this.flags.volatile = true;\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback.\n     *\n     * @param listener\n     * @public\n     */\n    onAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.push(listener);\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback. The listener is added to the beginning of the listeners array.\n     *\n     * @param listener\n     * @public\n     */\n    prependAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.unshift(listener);\n        return this;\n    }\n    /**\n     * Removes the listener that will be fired when any event is emitted.\n     *\n     * @param listener\n     * @public\n     */\n    offAny(listener) {\n        if (!this._anyListeners) {\n            return this;\n        }\n        if (listener) {\n            const listeners = this._anyListeners;\n            for (let i = 0; i < listeners.length; i++) {\n                if (listener === listeners[i]) {\n                    listeners.splice(i, 1);\n                    return this;\n                }\n            }\n        }\n        else {\n            this._anyListeners = [];\n        }\n        return this;\n    }\n    /**\n     * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,\n     * e.g. to remove listeners.\n     *\n     * @public\n     */\n    listenersAny() {\n        return this._anyListeners || [];\n    }\n}\nexports.Socket = Socket;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.on = void 0;\nfunction on(obj, ev, fn) {\n    obj.on(ev, fn);\n    return function subDestroy() {\n        obj.off(ev, fn);\n    };\n}\nexports.on = on;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.StrictEventEmitter = void 0;\nconst Emitter = require(\"component-emitter\");\n/**\n * Strictly typed version of an `EventEmitter`. A `TypedEventEmitter` takes type\n * parameters for mappings of event names to event data types, and strictly\n * types method calls to the `EventEmitter` according to these event maps.\n *\n * @typeParam ListenEvents - `EventsMap` of user-defined events that can be\n * listened to with `on` or `once`\n * @typeParam EmitEvents - `EventsMap` of user-defined events that can be\n * emitted with `emit`\n * @typeParam ReservedEvents - `EventsMap` of reserved events, that can be\n * emitted by socket.io with `emitReserved`, and can be listened to with\n * `listen`.\n */\nclass StrictEventEmitter extends Emitter {\n    /**\n     * Adds the `listener` function as an event listener for `ev`.\n     *\n     * @param ev Name of the event\n     * @param listener Callback function\n     */\n    on(ev, listener) {\n        super.on(ev, listener);\n        return this;\n    }\n    /**\n     * Adds a one-time `listener` function as an event listener for `ev`.\n     *\n     * @param ev Name of the event\n     * @param listener Callback function\n     */\n    once(ev, listener) {\n        super.once(ev, listener);\n        return this;\n    }\n    /**\n     * Emits an event.\n     *\n     * @param ev Name of the event\n     * @param args Values to send to listeners of this event\n     */\n    emit(ev, ...args) {\n        super.emit(ev, ...args);\n        return this;\n    }\n    /**\n     * Emits a reserved event.\n     *\n     * This method is `protected`, so that only a class extending\n     * `StrictEventEmitter` can emit its own reserved events.\n     *\n     * @param ev Reserved event name\n     * @param args Arguments to emit along with the event\n     */\n    emitReserved(ev, ...args) {\n        super.emit(ev, ...args);\n        return this;\n    }\n    /**\n     * Returns the listeners listening to an event.\n     *\n     * @param event Event name\n     * @returns Array of listeners subscribed to `event`\n     */\n    listeners(event) {\n        return super.listeners(event);\n    }\n}\nexports.StrictEventEmitter = StrictEventEmitter;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.io = exports.Socket = exports.Manager = exports.protocol = void 0;\nconst url_1 = require(\"./url\");\nconst manager_1 = require(\"./manager\");\n\n\n/**\n * Module exports.\n */\nmodule.exports = exports = lookup;\n/**\n * Managers cache.\n */\nconst cache = (exports.managers = {});\nfunction lookup(uri, opts) {\n    if (typeof uri === \"object\") {\n        opts = uri;\n        uri = undefined;\n    }\n    opts = opts || {};\n    const parsed = url_1.url(uri, opts.path || \"/socket.io\");\n    const source = parsed.source;\n    const id = parsed.id;\n    const path = parsed.path;\n    const sameNamespace = cache[id] && path in cache[id][\"nsps\"];\n    const newConnection = opts.forceNew ||\n        opts[\"force new connection\"] ||\n        false === opts.multiplex ||\n        sameNamespace;\n    let io;\n    if (newConnection) {\n\n\n        io = new manager_1.Manager(source, opts);\n    }\n    else {\n        if (!cache[id]) {\n\n\n            cache[id] = new manager_1.Manager(source, opts);\n        }\n        io = cache[id];\n    }\n    if (parsed.query && !opts.query) {\n        opts.query = parsed.queryKey;\n    }\n    return io.socket(parsed.path, opts);\n}\nexports.io = lookup;\n/**\n * Protocol version.\n *\n * @public\n */\nvar socket_io_parser_1 = require(\"socket.io-parser\");\nObject.defineProperty(exports, \"protocol\", { enumerable: true, get: function () { return socket_io_parser_1.protocol; } });\n/**\n * `connect`.\n *\n * @param {String} uri\n * @public\n */\nexports.connect = lookup;\n/**\n * Expose constructors for standalone build.\n *\n * @public\n */\nvar manager_2 = require(\"./manager\");\nObject.defineProperty(exports, \"Manager\", { enumerable: true, get: function () { return manager_2.Manager; } });\nvar socket_1 = require(\"./socket\");\nObject.defineProperty(exports, \"Socket\", { enumerable: true, get: function () { return socket_1.Socket; } });\nexports.default = lookup;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.url = void 0;\nconst parseuri = require(\"parseuri\");\n\n\n/**\n * URL parser.\n *\n * @param uri - url\n * @param path - the request path of the connection\n * @param loc - An object meant to mimic window.location.\n *        Defaults to window.location.\n * @public\n */\nfunction url(uri, path = \"\", loc) {\n    let obj = uri;\n    // default to window.location\n    loc = loc || (typeof location !== \"undefined\" && location);\n    if (null == uri)\n        uri = loc.protocol + \"//\" + loc.host;\n    // relative path support\n    if (typeof uri === \"string\") {\n        if (\"/\" === uri.charAt(0)) {\n            if (\"/\" === uri.charAt(1)) {\n                uri = loc.protocol + uri;\n            }\n            else {\n                uri = loc.host + uri;\n            }\n        }\n        if (!/^(https?|wss?):\\/\\//.test(uri)) {\n\n\n            if (\"undefined\" !== typeof loc) {\n                uri = loc.protocol + \"//\" + uri;\n            }\n            else {\n                uri = \"https://\" + uri;\n            }\n        }\n        // parse\n\n\n        obj = parseuri(uri);\n    }\n    // make sure we treat `localhost:80` and `localhost` equally\n    if (!obj.port) {\n        if (/^(http|ws)$/.test(obj.protocol)) {\n            obj.port = \"80\";\n        }\n        else if (/^(http|ws)s$/.test(obj.protocol)) {\n            obj.port = \"443\";\n        }\n    }\n    obj.path = obj.path || \"/\";\n    const ipv6 = obj.host.indexOf(\":\") !== -1;\n    const host = ipv6 ? \"[\" + obj.host + \"]\" : obj.host;\n    // define unique id\n    obj.id = obj.protocol + \"://\" + host + \":\" + obj.port + path;\n    // define href\n    obj.href =\n        obj.protocol +\n            \"://\" +\n            host +\n            (loc && loc.port === obj.port ? \"\" : \":\" + obj.port);\n    return obj;\n}\nexports.url = url;\n","const Socket = require(\"./socket\");\n\nmodule.exports = (uri, opts) => new Socket(uri, opts);\n\n/**\n * Expose deps for legacy compatibility\n * and standalone browser access.\n */\n\nmodule.exports.Socket = Socket;\nmodule.exports.protocol = Socket.protocol; // this is an int\nmodule.exports.Transport = require(\"./transport\");\nmodule.exports.transports = require(\"./transports/index\");\nmodule.exports.parser = require(\"engine.io-parser\");\n","const transports = require(\"./transports/index\");\nconst Emitter = require(\"component-emitter\");\n\n\nconst parser = require(\"engine.io-parser\");\nconst parseuri = require(\"parseuri\");\nconst parseqs = require(\"parseqs\");\n\nclass Socket extends Emitter {\n  /**\n   * Socket constructor.\n   *\n   * @param {String|Object} uri or options\n   * @param {Object} options\n   * @api public\n   */\n  constructor(uri, opts = {}) {\n    super();\n\n    if (uri && \"object\" === typeof uri) {\n      opts = uri;\n      uri = null;\n    }\n\n    if (uri) {\n      uri = parseuri(uri);\n      opts.hostname = uri.host;\n      opts.secure = uri.protocol === \"https\" || uri.protocol === \"wss\";\n      opts.port = uri.port;\n      if (uri.query) opts.query = uri.query;\n    } else if (opts.host) {\n      opts.hostname = parseuri(opts.host).host;\n    }\n\n    this.secure =\n      null != opts.secure\n        ? opts.secure\n        : typeof location !== \"undefined\" && \"https:\" === location.protocol;\n\n    if (opts.hostname && !opts.port) {\n      // if no port is specified manually, use the protocol default\n      opts.port = this.secure ? \"443\" : \"80\";\n    }\n\n    this.hostname =\n      opts.hostname ||\n      (typeof location !== \"undefined\" ? location.hostname : \"localhost\");\n    this.port =\n      opts.port ||\n      (typeof location !== \"undefined\" && location.port\n        ? location.port\n        : this.secure\n        ? 443\n        : 80);\n\n    this.transports = opts.transports || [\"polling\", \"websocket\"];\n    this.readyState = \"\";\n    this.writeBuffer = [];\n    this.prevBufferLen = 0;\n\n    this.opts = Object.assign(\n      {\n        path: \"/engine.io\",\n        agent: false,\n        withCredentials: false,\n        upgrade: true,\n        jsonp: true,\n        timestampParam: \"t\",\n        rememberUpgrade: false,\n        rejectUnauthorized: true,\n        perMessageDeflate: {\n          threshold: 1024\n        },\n        transportOptions: {},\n        closeOnBeforeunload: true\n      },\n      opts\n    );\n\n    this.opts.path = this.opts.path.replace(/\\/$/, \"\") + \"/\";\n\n    if (typeof this.opts.query === \"string\") {\n      this.opts.query = parseqs.decode(this.opts.query);\n    }\n\n    // set on handshake\n    this.id = null;\n    this.upgrades = null;\n    this.pingInterval = null;\n    this.pingTimeout = null;\n\n    // set on heartbeat\n    this.pingTimeoutTimer = null;\n\n    if (typeof addEventListener === \"function\") {\n      if (this.opts.closeOnBeforeunload) {\n        // Firefox closes the connection when the \"beforeunload\" event is emitted but not Chrome. This event listener\n        // ensures every browser behaves the same (no \"disconnect\" event at the Socket.IO level when the page is\n        // closed/reloaded)\n        addEventListener(\n          \"beforeunload\",\n          () => {\n            if (this.transport) {\n              // silently close the transport\n              this.transport.removeAllListeners();\n              this.transport.close();\n            }\n          },\n          false\n        );\n      }\n      if (this.hostname !== \"localhost\") {\n        this.offlineEventListener = () => {\n          this.onClose(\"transport close\");\n        };\n        addEventListener(\"offline\", this.offlineEventListener, false);\n      }\n    }\n\n    this.open();\n  }\n\n  /**\n   * Creates transport of the given type.\n   *\n   * @param {String} transport name\n   * @return {Transport}\n   * @api private\n   */\n  createTransport(name) {\n\n\n    const query = clone(this.opts.query);\n\n    // append engine.io protocol identifier\n    query.EIO = parser.protocol;\n\n    // transport name\n    query.transport = name;\n\n    // session id if we already have one\n    if (this.id) query.sid = this.id;\n\n    const opts = Object.assign(\n      {},\n      this.opts.transportOptions[name],\n      this.opts,\n      {\n        query,\n        socket: this,\n        hostname: this.hostname,\n        secure: this.secure,\n        port: this.port\n      }\n    );\n\n\n\n\n    return new transports[name](opts);\n  }\n\n  /**\n   * Initializes transport to use and starts probe.\n   *\n   * @api private\n   */\n  open() {\n    let transport;\n    if (\n      this.opts.rememberUpgrade &&\n      Socket.priorWebsocketSuccess &&\n      this.transports.indexOf(\"websocket\") !== -1\n    ) {\n      transport = \"websocket\";\n    } else if (0 === this.transports.length) {\n      // Emit error on next tick so it can be listened to\n      setTimeout(() => {\n        this.emit(\"error\", \"No transports available\");\n      }, 0);\n      return;\n    } else {\n      transport = this.transports[0];\n    }\n    this.readyState = \"opening\";\n\n    // Retry with the next transport if the transport is disabled (jsonp: false)\n    try {\n      transport = this.createTransport(transport);\n    } catch (e) {\n\n\n      this.transports.shift();\n      this.open();\n      return;\n    }\n\n    transport.open();\n    this.setTransport(transport);\n  }\n\n  /**\n   * Sets the current transport. Disables the existing one (if any).\n   *\n   * @api private\n   */\n  setTransport(transport) {\n\n\n\n    if (this.transport) {\n\n\n      this.transport.removeAllListeners();\n    }\n\n    // set up transport\n    this.transport = transport;\n\n    // set up transport listeners\n    transport\n      .on(\"drain\", this.onDrain.bind(this))\n      .on(\"packet\", this.onPacket.bind(this))\n      .on(\"error\", this.onError.bind(this))\n      .on(\"close\", () => {\n        this.onClose(\"transport close\");\n      });\n  }\n\n  /**\n   * Probes a transport.\n   *\n   * @param {String} transport name\n   * @api private\n   */\n  probe(name) {\n\n\n    let transport = this.createTransport(name, { probe: 1 });\n    let failed = false;\n\n    Socket.priorWebsocketSuccess = false;\n\n    const onTransportOpen = () => {\n      if (failed) return;\n\n\n\n      transport.send([{ type: \"ping\", data: \"probe\" }]);\n      transport.once(\"packet\", msg => {\n        if (failed) return;\n        if (\"pong\" === msg.type && \"probe\" === msg.data) {\n\n\n          this.upgrading = true;\n          this.emit(\"upgrading\", transport);\n          if (!transport) return;\n          Socket.priorWebsocketSuccess = \"websocket\" === transport.name;\n\n\n\n          this.transport.pause(() => {\n            if (failed) return;\n            if (\"closed\" === this.readyState) return;\n\n\n\n            cleanup();\n\n            this.setTransport(transport);\n            transport.send([{ type: \"upgrade\" }]);\n            this.emit(\"upgrade\", transport);\n            transport = null;\n            this.upgrading = false;\n            this.flush();\n          });\n        } else {\n\n\n          const err = new Error(\"probe error\");\n          err.transport = transport.name;\n          this.emit(\"upgradeError\", err);\n        }\n      });\n    };\n\n    function freezeTransport() {\n      if (failed) return;\n\n      // Any callback called by transport should be ignored since now\n      failed = true;\n\n      cleanup();\n\n      transport.close();\n      transport = null;\n    }\n\n    // Handle any error that happens while probing\n    const onerror = err => {\n      const error = new Error(\"probe error: \" + err);\n      error.transport = transport.name;\n\n      freezeTransport();\n\n\n\n\n      this.emit(\"upgradeError\", error);\n    };\n\n    function onTransportClose() {\n      onerror(\"transport closed\");\n    }\n\n    // When the socket is closed while we're probing\n    function onclose() {\n      onerror(\"socket closed\");\n    }\n\n    // When the socket is upgraded while we're probing\n    function onupgrade(to) {\n      if (transport && to.name !== transport.name) {\n\n\n        freezeTransport();\n      }\n    }\n\n    // Remove all listeners on the transport and on self\n    const cleanup = () => {\n      transport.removeListener(\"open\", onTransportOpen);\n      transport.removeListener(\"error\", onerror);\n      transport.removeListener(\"close\", onTransportClose);\n      this.removeListener(\"close\", onclose);\n      this.removeListener(\"upgrading\", onupgrade);\n    };\n\n    transport.once(\"open\", onTransportOpen);\n    transport.once(\"error\", onerror);\n    transport.once(\"close\", onTransportClose);\n\n    this.once(\"close\", onclose);\n    this.once(\"upgrading\", onupgrade);\n\n    transport.open();\n  }\n\n  /**\n   * Called when connection is deemed open.\n   *\n   * @api public\n   */\n  onOpen() {\n\n\n    this.readyState = \"open\";\n    Socket.priorWebsocketSuccess = \"websocket\" === this.transport.name;\n    this.emit(\"open\");\n    this.flush();\n\n    // we check for `readyState` in case an `open`\n    // listener already closed the socket\n    if (\n      \"open\" === this.readyState &&\n      this.opts.upgrade &&\n      this.transport.pause\n    ) {\n\n\n      let i = 0;\n      const l = this.upgrades.length;\n      for (; i < l; i++) {\n        this.probe(this.upgrades[i]);\n      }\n    }\n  }\n\n  /**\n   * Handles a packet.\n   *\n   * @api private\n   */\n  onPacket(packet) {\n    if (\n      \"opening\" === this.readyState ||\n      \"open\" === this.readyState ||\n      \"closing\" === this.readyState\n    ) {\n\n\n\n      this.emit(\"packet\", packet);\n\n      // Socket is live - any packet counts\n      this.emit(\"heartbeat\");\n\n      switch (packet.type) {\n        case \"open\":\n          this.onHandshake(JSON.parse(packet.data));\n          break;\n\n        case \"ping\":\n          this.resetPingTimeout();\n          this.sendPacket(\"pong\");\n          this.emit(\"ping\");\n          this.emit(\"pong\");\n          break;\n\n        case \"error\":\n          const err = new Error(\"server error\");\n          err.code = packet.data;\n          this.onError(err);\n          break;\n\n        case \"message\":\n          this.emit(\"data\", packet.data);\n          this.emit(\"message\", packet.data);\n          break;\n      }\n    } else {\n\n\n    }\n  }\n\n  /**\n   * Called upon handshake completion.\n   *\n   * @param {Object} handshake obj\n   * @api private\n   */\n  onHandshake(data) {\n    this.emit(\"handshake\", data);\n    this.id = data.sid;\n    this.transport.query.sid = data.sid;\n    this.upgrades = this.filterUpgrades(data.upgrades);\n    this.pingInterval = data.pingInterval;\n    this.pingTimeout = data.pingTimeout;\n    this.onOpen();\n    // In case open handler closes socket\n    if (\"closed\" === this.readyState) return;\n    this.resetPingTimeout();\n  }\n\n  /**\n   * Sets and resets ping timeout timer based on server pings.\n   *\n   * @api private\n   */\n  resetPingTimeout() {\n    clearTimeout(this.pingTimeoutTimer);\n    this.pingTimeoutTimer = setTimeout(() => {\n      this.onClose(\"ping timeout\");\n    }, this.pingInterval + this.pingTimeout);\n    if (this.opts.autoUnref) {\n      this.pingTimeoutTimer.unref();\n    }\n  }\n\n  /**\n   * Called on `drain` event\n   *\n   * @api private\n   */\n  onDrain() {\n    this.writeBuffer.splice(0, this.prevBufferLen);\n\n    // setting prevBufferLen = 0 is very important\n    // for example, when upgrading, upgrade packet is sent over,\n    // and a nonzero prevBufferLen could cause problems on `drain`\n    this.prevBufferLen = 0;\n\n    if (0 === this.writeBuffer.length) {\n      this.emit(\"drain\");\n    } else {\n      this.flush();\n    }\n  }\n\n  /**\n   * Flush write buffers.\n   *\n   * @api private\n   */\n  flush() {\n    if (\n      \"closed\" !== this.readyState &&\n      this.transport.writable &&\n      !this.upgrading &&\n      this.writeBuffer.length\n    ) {\n\n\n      this.transport.send(this.writeBuffer);\n      // keep track of current length of writeBuffer\n      // splice writeBuffer and callbackBuffer on `drain`\n      this.prevBufferLen = this.writeBuffer.length;\n      this.emit(\"flush\");\n    }\n  }\n\n  /**\n   * Sends a message.\n   *\n   * @param {String} message.\n   * @param {Function} callback function.\n   * @param {Object} options.\n   * @return {Socket} for chaining.\n   * @api public\n   */\n  write(msg, options, fn) {\n    this.sendPacket(\"message\", msg, options, fn);\n    return this;\n  }\n\n  send(msg, options, fn) {\n    this.sendPacket(\"message\", msg, options, fn);\n    return this;\n  }\n\n  /**\n   * Sends a packet.\n   *\n   * @param {String} packet type.\n   * @param {String} data.\n   * @param {Object} options.\n   * @param {Function} callback function.\n   * @api private\n   */\n  sendPacket(type, data, options, fn) {\n    if (\"function\" === typeof data) {\n      fn = data;\n      data = undefined;\n    }\n\n    if (\"function\" === typeof options) {\n      fn = options;\n      options = null;\n    }\n\n    if (\"closing\" === this.readyState || \"closed\" === this.readyState) {\n      return;\n    }\n\n    options = options || {};\n    options.compress = false !== options.compress;\n\n    const packet = {\n      type: type,\n      data: data,\n      options: options\n    };\n    this.emit(\"packetCreate\", packet);\n    this.writeBuffer.push(packet);\n    if (fn) this.once(\"flush\", fn);\n    this.flush();\n  }\n\n  /**\n   * Closes the connection.\n   *\n   * @api private\n   */\n  close() {\n    const close = () => {\n      this.onClose(\"forced close\");\n\n\n      this.transport.close();\n    };\n\n    const cleanupAndClose = () => {\n      this.removeListener(\"upgrade\", cleanupAndClose);\n      this.removeListener(\"upgradeError\", cleanupAndClose);\n      close();\n    };\n\n    const waitForUpgrade = () => {\n      // wait for upgrade to finish since we can't send packets while pausing a transport\n      this.once(\"upgrade\", cleanupAndClose);\n      this.once(\"upgradeError\", cleanupAndClose);\n    };\n\n    if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n      this.readyState = \"closing\";\n\n      if (this.writeBuffer.length) {\n        this.once(\"drain\", () => {\n          if (this.upgrading) {\n            waitForUpgrade();\n          } else {\n            close();\n          }\n        });\n      } else if (this.upgrading) {\n        waitForUpgrade();\n      } else {\n        close();\n      }\n    }\n\n    return this;\n  }\n\n  /**\n   * Called upon transport error\n   *\n   * @api private\n   */\n  onError(err) {\n\n\n    Socket.priorWebsocketSuccess = false;\n    this.emit(\"error\", err);\n    this.onClose(\"transport error\", err);\n  }\n\n  /**\n   * Called upon transport close.\n   *\n   * @api private\n   */\n  onClose(reason, desc) {\n    if (\n      \"opening\" === this.readyState ||\n      \"open\" === this.readyState ||\n      \"closing\" === this.readyState\n    ) {\n\n\n\n      // clear timers\n      clearTimeout(this.pingIntervalTimer);\n      clearTimeout(this.pingTimeoutTimer);\n\n      // stop event from firing again for transport\n      this.transport.removeAllListeners(\"close\");\n\n      // ensure transport won't stay open\n      this.transport.close();\n\n      // ignore further transport communication\n      this.transport.removeAllListeners();\n\n      if (typeof removeEventListener === \"function\") {\n        removeEventListener(\"offline\", this.offlineEventListener, false);\n      }\n\n      // set ready state\n      this.readyState = \"closed\";\n\n      // clear session id\n      this.id = null;\n\n      // emit close event\n      this.emit(\"close\", reason, desc);\n\n      // clean buffers after, so users can still\n      // grab the buffers on `close` event\n      this.writeBuffer = [];\n      this.prevBufferLen = 0;\n    }\n  }\n\n  /**\n   * Filters upgrades, returning only those matching client transports.\n   *\n   * @param {Array} server upgrades\n   * @api private\n   *\n   */\n  filterUpgrades(upgrades) {\n    const filteredUpgrades = [];\n    let i = 0;\n    const j = upgrades.length;\n    for (; i < j; i++) {\n      if (~this.transports.indexOf(upgrades[i]))\n        filteredUpgrades.push(upgrades[i]);\n    }\n    return filteredUpgrades;\n  }\n}\n\nSocket.priorWebsocketSuccess = false;\n\n/**\n * Protocol version.\n *\n * @api public\n */\n\nSocket.protocol = parser.protocol; // this is an int\n\nfunction clone(obj) {\n  const o = {};\n  for (let i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      o[i] = obj[i];\n    }\n  }\n  return o;\n}\n\nmodule.exports = Socket;\n","\n/**\n * Module exports.\n *\n * Logic borrowed from Modernizr:\n *\n *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js\n */\n\ntry {\n  module.exports = typeof XMLHttpRequest !== 'undefined' &&\n    'withCredentials' in new XMLHttpRequest();\n} catch (err) {\n  // if XMLHttp support is disabled in IE then it will throw\n  // when trying to create\n  module.exports = false;\n}\n","/* global attachEvent */\n\nconst XMLHttpRequest = require(\"../../contrib/xmlhttprequest-ssl/XMLHttpRequest\");\nconst Polling = require(\"./polling\");\nconst Emitter = require(\"component-emitter\");\nconst { pick } = require(\"../util\");\nconst globalThis = require(\"../globalThis\");\n\n\n\n\n/**\n * Empty function\n */\n\nfunction empty() {}\n\nconst hasXHR2 = (function() {\n  const xhr = new XMLHttpRequest({ xdomain: false });\n  return null != xhr.responseType;\n})();\n\nclass XHR extends Polling {\n  /**\n   * XHR Polling constructor.\n   *\n   * @param {Object} opts\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    if (typeof location !== \"undefined\") {\n      const isSSL = \"https:\" === location.protocol;\n      let port = location.port;\n\n      // some user agents have empty `location.port`\n      if (!port) {\n        port = isSSL ? 443 : 80;\n      }\n\n      this.xd =\n        (typeof location !== \"undefined\" &&\n          opts.hostname !== location.hostname) ||\n        port !== opts.port;\n      this.xs = opts.secure !== isSSL;\n    }\n    /**\n     * XHR supports binary\n     */\n    const forceBase64 = opts && opts.forceBase64;\n    this.supportsBinary = hasXHR2 && !forceBase64;\n  }\n\n  /**\n   * Creates a request.\n   *\n   * @param {String} method\n   * @api private\n   */\n  request(opts = {}) {\n    Object.assign(opts, { xd: this.xd, xs: this.xs }, this.opts);\n    return new Request(this.uri(), opts);\n  }\n\n  /**\n   * Sends data.\n   *\n   * @param {String} data to send.\n   * @param {Function} called upon flush.\n   * @api private\n   */\n  doWrite(data, fn) {\n    const req = this.request({\n      method: \"POST\",\n      data: data\n    });\n    req.on(\"success\", fn);\n    req.on(\"error\", err => {\n      this.onError(\"xhr post error\", err);\n    });\n  }\n\n  /**\n   * Starts a poll cycle.\n   *\n   * @api private\n   */\n  doPoll() {\n\n\n    const req = this.request();\n    req.on(\"data\", this.onData.bind(this));\n    req.on(\"error\", err => {\n      this.onError(\"xhr poll error\", err);\n    });\n    this.pollXhr = req;\n  }\n}\n\nclass Request extends Emitter {\n  /**\n   * Request constructor\n   *\n   * @param {Object} options\n   * @api public\n   */\n  constructor(uri, opts) {\n    super();\n    this.opts = opts;\n\n    this.method = opts.method || \"GET\";\n    this.uri = uri;\n    this.async = false !== opts.async;\n    this.data = undefined !== opts.data ? opts.data : null;\n\n    this.create();\n  }\n\n  /**\n   * Creates the XHR object and sends the request.\n   *\n   * @api private\n   */\n  create() {\n    const opts = pick(\n      this.opts,\n      \"agent\",\n      \"enablesXDR\",\n      \"pfx\",\n      \"key\",\n      \"passphrase\",\n      \"cert\",\n      \"ca\",\n      \"ciphers\",\n      \"rejectUnauthorized\",\n      \"autoUnref\"\n    );\n    opts.xdomain = !!this.opts.xd;\n    opts.xscheme = !!this.opts.xs;\n\n    const xhr = (this.xhr = new XMLHttpRequest(opts));\n\n    try {\n\n\n      xhr.open(this.method, this.uri, this.async);\n      try {\n        if (this.opts.extraHeaders) {\n          xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);\n          for (let i in this.opts.extraHeaders) {\n            if (this.opts.extraHeaders.hasOwnProperty(i)) {\n              xhr.setRequestHeader(i, this.opts.extraHeaders[i]);\n            }\n          }\n        }\n      } catch (e) {}\n\n      if (\"POST\" === this.method) {\n        try {\n          xhr.setRequestHeader(\"Content-type\", \"text/plain;charset=UTF-8\");\n        } catch (e) {}\n      }\n\n      try {\n        xhr.setRequestHeader(\"Accept\", \"*/*\");\n      } catch (e) {}\n\n      // ie6 check\n      if (\"withCredentials\" in xhr) {\n        xhr.withCredentials = this.opts.withCredentials;\n      }\n\n      if (this.opts.requestTimeout) {\n        xhr.timeout = this.opts.requestTimeout;\n      }\n\n      if (this.hasXDR()) {\n        xhr.onload = () => {\n          this.onLoad();\n        };\n        xhr.onerror = () => {\n          this.onError(xhr.responseText);\n        };\n      } else {\n        xhr.onreadystatechange = () => {\n          if (4 !== xhr.readyState) return;\n          if (200 === xhr.status || 1223 === xhr.status) {\n            this.onLoad();\n          } else {\n            // make sure the `error` event handler that's user-set\n            // does not throw in the same tick and gets caught here\n            setTimeout(() => {\n              this.onError(typeof xhr.status === \"number\" ? xhr.status : 0);\n            }, 0);\n          }\n        };\n      }\n\n\n\n      xhr.send(this.data);\n    } catch (e) {\n      // Need to defer since .create() is called directly from the constructor\n      // and thus the 'error' event can only be only bound *after* this exception\n      // occurs.  Therefore, also, we cannot throw here at all.\n      setTimeout(() => {\n        this.onError(e);\n      }, 0);\n      return;\n    }\n\n    if (typeof document !== \"undefined\") {\n      this.index = Request.requestsCount++;\n      Request.requests[this.index] = this;\n    }\n  }\n\n  /**\n   * Called upon successful response.\n   *\n   * @api private\n   */\n  onSuccess() {\n    this.emit(\"success\");\n    this.cleanup();\n  }\n\n  /**\n   * Called if we have data.\n   *\n   * @api private\n   */\n  onData(data) {\n    this.emit(\"data\", data);\n    this.onSuccess();\n  }\n\n  /**\n   * Called upon error.\n   *\n   * @api private\n   */\n  onError(err) {\n    this.emit(\"error\", err);\n    this.cleanup(true);\n  }\n\n  /**\n   * Cleans up house.\n   *\n   * @api private\n   */\n  cleanup(fromError) {\n    if (\"undefined\" === typeof this.xhr || null === this.xhr) {\n      return;\n    }\n    // xmlhttprequest\n    if (this.hasXDR()) {\n      this.xhr.onload = this.xhr.onerror = empty;\n    } else {\n      this.xhr.onreadystatechange = empty;\n    }\n\n    if (fromError) {\n      try {\n        this.xhr.abort();\n      } catch (e) {}\n    }\n\n    if (typeof document !== \"undefined\") {\n      delete Request.requests[this.index];\n    }\n\n    this.xhr = null;\n  }\n\n  /**\n   * Called upon load.\n   *\n   * @api private\n   */\n  onLoad() {\n    const data = this.xhr.responseText;\n    if (data !== null) {\n      this.onData(data);\n    }\n  }\n\n  /**\n   * Check if it has XDomainRequest.\n   *\n   * @api private\n   */\n  hasXDR() {\n    return typeof XDomainRequest !== \"undefined\" && !this.xs && this.enablesXDR;\n  }\n\n  /**\n   * Aborts the request.\n   *\n   * @api public\n   */\n  abort() {\n    this.cleanup();\n  }\n}\n\n/**\n * Aborts pending requests when unloading the window. This is needed to prevent\n * memory leaks (e.g. when using IE) and to ensure that no spurious error is\n * emitted.\n */\n\nRequest.requestsCount = 0;\nRequest.requests = {};\n\nif (typeof document !== \"undefined\") {\n  if (typeof attachEvent === \"function\") {\n    attachEvent(\"onunload\", unloadHandler);\n  } else if (typeof addEventListener === \"function\") {\n    const terminationEvent = \"onpagehide\" in globalThis ? \"pagehide\" : \"unload\";\n    addEventListener(terminationEvent, unloadHandler, false);\n  }\n}\n\nfunction unloadHandler() {\n  for (let i in Request.requests) {\n    if (Request.requests.hasOwnProperty(i)) {\n      Request.requests[i].abort();\n    }\n  }\n}\n\nmodule.exports = XHR;\nmodule.exports.Request = Request;\n","const { PACKET_TYPES } = require(\"./commons\");\n\nconst withNativeBlob =\n  typeof Blob === \"function\" ||\n  (typeof Blob !== \"undefined\" &&\n    Object.prototype.toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n\n// ArrayBuffer.isView method is not defined in IE10\nconst isView = obj => {\n  return typeof ArrayBuffer.isView === \"function\"\n    ? ArrayBuffer.isView(obj)\n    : obj && obj.buffer instanceof ArrayBuffer;\n};\n\nconst encodePacket = ({ type, data }, supportsBinary, callback) => {\n  if (withNativeBlob && data instanceof Blob) {\n    if (supportsBinary) {\n      return callback(data);\n    } else {\n      return encodeBlobAsBase64(data, callback);\n    }\n  } else if (\n    withNativeArrayBuffer &&\n    (data instanceof ArrayBuffer || isView(data))\n  ) {\n    if (supportsBinary) {\n      return callback(data instanceof ArrayBuffer ? data : data.buffer);\n    } else {\n      return encodeBlobAsBase64(new Blob([data]), callback);\n    }\n  }\n  // plain string\n  return callback(PACKET_TYPES[type] + (data || \"\"));\n};\n\nconst encodeBlobAsBase64 = (data, callback) => {\n  const fileReader = new FileReader();\n  fileReader.onload = function() {\n    const content = fileReader.result.split(\",\")[1];\n    callback(\"b\" + content);\n  };\n  return fileReader.readAsDataURL(data);\n};\n\nmodule.exports = encodePacket;\n","const { PACKET_TYPES_REVERSE, ERROR_PACKET } = require(\"./commons\");\n\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n\nlet base64decoder;\nif (withNativeArrayBuffer) {\n  base64decoder = require(\"base64-arraybuffer\");\n}\n\nconst decodePacket = (encodedPacket, binaryType) => {\n  if (typeof encodedPacket !== \"string\") {\n    return {\n      type: \"message\",\n      data: mapBinary(encodedPacket, binaryType)\n    };\n  }\n  const type = encodedPacket.charAt(0);\n  if (type === \"b\") {\n    return {\n      type: \"message\",\n      data: decodeBase64Packet(encodedPacket.substring(1), binaryType)\n    };\n  }\n  const packetType = PACKET_TYPES_REVERSE[type];\n  if (!packetType) {\n    return ERROR_PACKET;\n  }\n  return encodedPacket.length > 1\n    ? {\n        type: PACKET_TYPES_REVERSE[type],\n        data: encodedPacket.substring(1)\n      }\n    : {\n        type: PACKET_TYPES_REVERSE[type]\n      };\n};\n\nconst decodeBase64Packet = (data, binaryType) => {\n  if (base64decoder) {\n    const decoded = base64decoder.decode(data);\n    return mapBinary(decoded, binaryType);\n  } else {\n    return { base64: true, data }; // fallback for old browsers\n  }\n};\n\nconst mapBinary = (data, binaryType) => {\n  switch (binaryType) {\n    case \"blob\":\n      return data instanceof ArrayBuffer ? new Blob([data]) : data;\n    case \"arraybuffer\":\n    default:\n      return data; // assuming the data is already an ArrayBuffer\n  }\n};\n\nmodule.exports = decodePacket;\n","/*\n * base64-arraybuffer\n * https://github.com/niklasvh/base64-arraybuffer\n *\n * Copyright (c) 2012 Niklas von Hertzen\n * Licensed under the MIT license.\n */\n(function(chars){\n  \"use strict\";\n\n  exports.encode = function(arraybuffer) {\n    var bytes = new Uint8Array(arraybuffer),\n    i, len = bytes.length, base64 = \"\";\n\n    for (i = 0; i < len; i+=3) {\n      base64 += chars[bytes[i] >> 2];\n      base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];\n      base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];\n      base64 += chars[bytes[i + 2] & 63];\n    }\n\n    if ((len % 3) === 2) {\n      base64 = base64.substring(0, base64.length - 1) + \"=\";\n    } else if (len % 3 === 1) {\n      base64 = base64.substring(0, base64.length - 2) + \"==\";\n    }\n\n    return base64;\n  };\n\n  exports.decode =  function(base64) {\n    var bufferLength = base64.length * 0.75,\n    len = base64.length, i, p = 0,\n    encoded1, encoded2, encoded3, encoded4;\n\n    if (base64[base64.length - 1] === \"=\") {\n      bufferLength--;\n      if (base64[base64.length - 2] === \"=\") {\n        bufferLength--;\n      }\n    }\n\n    var arraybuffer = new ArrayBuffer(bufferLength),\n    bytes = new Uint8Array(arraybuffer);\n\n    for (i = 0; i < len; i+=4) {\n      encoded1 = chars.indexOf(base64[i]);\n      encoded2 = chars.indexOf(base64[i+1]);\n      encoded3 = chars.indexOf(base64[i+2]);\n      encoded4 = chars.indexOf(base64[i+3]);\n\n      bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);\n      bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);\n      bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);\n    }\n\n    return arraybuffer;\n  };\n})(\"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\");\n","const Polling = require(\"./polling\");\nconst globalThis = require(\"../globalThis\");\n\nconst rNewline = /\\n/g;\nconst rEscapedNewline = /\\\\n/g;\n\n/**\n * Global JSONP callbacks.\n */\n\nlet callbacks;\n\nclass JSONPPolling extends Polling {\n  /**\n   * JSONP Polling constructor.\n   *\n   * @param {Object} opts.\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    this.query = this.query || {};\n\n    // define global callbacks array if not present\n    // we do this here (lazily) to avoid unneeded global pollution\n    if (!callbacks) {\n      // we need to consider multiple engines in the same page\n      callbacks = globalThis.___eio = globalThis.___eio || [];\n    }\n\n    // callback identifier\n    this.index = callbacks.length;\n\n    // add callback to jsonp global\n    callbacks.push(this.onData.bind(this));\n\n    // append to query string\n    this.query.j = this.index;\n  }\n\n  /**\n   * JSONP only supports binary as base64 encoded strings\n   */\n  get supportsBinary() {\n    return false;\n  }\n\n  /**\n   * Closes the socket.\n   *\n   * @api private\n   */\n  doClose() {\n    if (this.script) {\n      // prevent spurious errors from being emitted when the window is unloaded\n      this.script.onerror = () => {};\n      this.script.parentNode.removeChild(this.script);\n      this.script = null;\n    }\n\n    if (this.form) {\n      this.form.parentNode.removeChild(this.form);\n      this.form = null;\n      this.iframe = null;\n    }\n\n    super.doClose();\n  }\n\n  /**\n   * Starts a poll cycle.\n   *\n   * @api private\n   */\n  doPoll() {\n    const script = document.createElement(\"script\");\n\n    if (this.script) {\n      this.script.parentNode.removeChild(this.script);\n      this.script = null;\n    }\n\n    script.async = true;\n    script.src = this.uri();\n    script.onerror = e => {\n      this.onError(\"jsonp poll error\", e);\n    };\n\n    const insertAt = document.getElementsByTagName(\"script\")[0];\n    if (insertAt) {\n      insertAt.parentNode.insertBefore(script, insertAt);\n    } else {\n      (document.head || document.body).appendChild(script);\n    }\n    this.script = script;\n\n    const isUAgecko =\n      \"undefined\" !== typeof navigator && /gecko/i.test(navigator.userAgent);\n\n    if (isUAgecko) {\n      setTimeout(function() {\n        const iframe = document.createElement(\"iframe\");\n        document.body.appendChild(iframe);\n        document.body.removeChild(iframe);\n      }, 100);\n    }\n  }\n\n  /**\n   * Writes with a hidden iframe.\n   *\n   * @param {String} data to send\n   * @param {Function} called upon flush.\n   * @api private\n   */\n  doWrite(data, fn) {\n    let iframe;\n\n    if (!this.form) {\n      const form = document.createElement(\"form\");\n      const area = document.createElement(\"textarea\");\n      const id = (this.iframeId = \"eio_iframe_\" + this.index);\n\n      form.className = \"socketio\";\n      form.style.position = \"absolute\";\n      form.style.top = \"-1000px\";\n      form.style.left = \"-1000px\";\n      form.target = id;\n      form.method = \"POST\";\n      form.setAttribute(\"accept-charset\", \"utf-8\");\n      area.name = \"d\";\n      form.appendChild(area);\n      document.body.appendChild(form);\n\n      this.form = form;\n      this.area = area;\n    }\n\n    this.form.action = this.uri();\n\n    function complete() {\n      initIframe();\n      fn();\n    }\n\n    const initIframe = () => {\n      if (this.iframe) {\n        try {\n          this.form.removeChild(this.iframe);\n        } catch (e) {\n          this.onError(\"jsonp polling iframe removal error\", e);\n        }\n      }\n\n      try {\n        // ie6 dynamic iframes with target=\"\" support (thanks Chris Lambacher)\n        const html = '<iframe src=\"javascript:0\" name=\"' + this.iframeId + '\">';\n        iframe = document.createElement(html);\n      } catch (e) {\n        iframe = document.createElement(\"iframe\");\n        iframe.name = this.iframeId;\n        iframe.src = \"javascript:0\";\n      }\n\n      iframe.id = this.iframeId;\n\n      this.form.appendChild(iframe);\n      this.iframe = iframe;\n    };\n\n    initIframe();\n\n    // escape \\n to prevent it from being converted into \\r\\n by some UAs\n    // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side\n    data = data.replace(rEscapedNewline, \"\\\\\\n\");\n    this.area.value = data.replace(rNewline, \"\\\\n\");\n\n    try {\n      this.form.submit();\n    } catch (e) {}\n\n    if (this.iframe.attachEvent) {\n      this.iframe.onreadystatechange = () => {\n        if (this.iframe.readyState === \"complete\") {\n          complete();\n        }\n      };\n    } else {\n      this.iframe.onload = complete;\n    }\n  }\n}\n\nmodule.exports = JSONPPolling;\n","const Transport = require(\"../transport\");\nconst parser = require(\"engine.io-parser\");\nconst parseqs = require(\"parseqs\");\nconst yeast = require(\"yeast\");\nconst { pick } = require(\"../util\");\nconst {\n  WebSocket,\n  usingBrowserWebSocket,\n  defaultBinaryType,\n  nextTick\n} = require(\"./websocket-constructor\");\n\n\n\n\n// detect ReactNative environment\nconst isReactNative =\n  typeof navigator !== \"undefined\" &&\n  typeof navigator.product === \"string\" &&\n  navigator.product.toLowerCase() === \"reactnative\";\n\nclass WS extends Transport {\n  /**\n   * WebSocket transport constructor.\n   *\n   * @api {Object} connection options\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    this.supportsBinary = !opts.forceBase64;\n  }\n\n  /**\n   * Transport name.\n   *\n   * @api public\n   */\n  get name() {\n    return \"websocket\";\n  }\n\n  /**\n   * Opens socket.\n   *\n   * @api private\n   */\n  doOpen() {\n    if (!this.check()) {\n      // let probe timeout\n      return;\n    }\n\n    const uri = this.uri();\n    const protocols = this.opts.protocols;\n\n    // React Native only supports the 'headers' option, and will print a warning if anything else is passed\n    const opts = isReactNative\n      ? {}\n      : pick(\n          this.opts,\n          \"agent\",\n          \"perMessageDeflate\",\n          \"pfx\",\n          \"key\",\n          \"passphrase\",\n          \"cert\",\n          \"ca\",\n          \"ciphers\",\n          \"rejectUnauthorized\",\n          \"localAddress\",\n          \"protocolVersion\",\n          \"origin\",\n          \"maxPayload\",\n          \"family\",\n          \"checkServerIdentity\"\n        );\n\n    if (this.opts.extraHeaders) {\n      opts.headers = this.opts.extraHeaders;\n    }\n\n    try {\n      this.ws =\n        usingBrowserWebSocket && !isReactNative\n          ? protocols\n            ? new WebSocket(uri, protocols)\n            : new WebSocket(uri)\n          : new WebSocket(uri, protocols, opts);\n    } catch (err) {\n      return this.emit(\"error\", err);\n    }\n\n    this.ws.binaryType = this.socket.binaryType || defaultBinaryType;\n\n    this.addEventListeners();\n  }\n\n  /**\n   * Adds event listeners to the socket\n   *\n   * @api private\n   */\n  addEventListeners() {\n    this.ws.onopen = () => {\n      if (this.opts.autoUnref) {\n        this.ws._socket.unref();\n      }\n      this.onOpen();\n    };\n    this.ws.onclose = this.onClose.bind(this);\n    this.ws.onmessage = ev => this.onData(ev.data);\n    this.ws.onerror = e => this.onError(\"websocket error\", e);\n  }\n\n  /**\n   * Writes data to socket.\n   *\n   * @param {Array} array of packets.\n   * @api private\n   */\n  write(packets) {\n    this.writable = false;\n\n    // encodePacket efficient as it uses WS framing\n    // no need for encodePayload\n    for (let i = 0; i < packets.length; i++) {\n      const packet = packets[i];\n      const lastPacket = i === packets.length - 1;\n\n      parser.encodePacket(packet, this.supportsBinary, data => {\n        // always create a new object (GH-437)\n        const opts = {};\n        if (!usingBrowserWebSocket) {\n          if (packet.options) {\n            opts.compress = packet.options.compress;\n          }\n\n          if (this.opts.perMessageDeflate) {\n            const len =\n              \"string\" === typeof data ? Buffer.byteLength(data) : data.length;\n            if (len < this.opts.perMessageDeflate.threshold) {\n              opts.compress = false;\n            }\n          }\n        }\n\n        // Sometimes the websocket has already been closed but the browser didn't\n        // have a chance of informing us about it yet, in that case send will\n        // throw an error\n        try {\n          if (usingBrowserWebSocket) {\n            // TypeError is thrown when passing the second argument on Safari\n            this.ws.send(data);\n          } else {\n            this.ws.send(data, opts);\n          }\n        } catch (e) {\n\n\n        }\n\n        if (lastPacket) {\n          // fake drain\n          // defer to next tick to allow Socket to clear writeBuffer\n          nextTick(() => {\n            this.writable = true;\n            this.emit(\"drain\");\n          });\n        }\n      });\n    }\n  }\n\n  /**\n   * Called upon close\n   *\n   * @api private\n   */\n  onClose() {\n    Transport.prototype.onClose.call(this);\n  }\n\n  /**\n   * Closes socket.\n   *\n   * @api private\n   */\n  doClose() {\n    if (typeof this.ws !== \"undefined\") {\n      this.ws.close();\n      this.ws = null;\n    }\n  }\n\n  /**\n   * Generates uri for connection.\n   *\n   * @api private\n   */\n  uri() {\n    let query = this.query || {};\n    const schema = this.opts.secure ? \"wss\" : \"ws\";\n    let port = \"\";\n\n    // avoid port if default for schema\n    if (\n      this.opts.port &&\n      ((\"wss\" === schema && Number(this.opts.port) !== 443) ||\n        (\"ws\" === schema && Number(this.opts.port) !== 80))\n    ) {\n      port = \":\" + this.opts.port;\n    }\n\n    // append timestamp to URI\n    if (this.opts.timestampRequests) {\n      query[this.opts.timestampParam] = yeast();\n    }\n\n    // communicate binary support capabilities\n    if (!this.supportsBinary) {\n      query.b64 = 1;\n    }\n\n    query = parseqs.encode(query);\n\n    // prepend ? to query\n    if (query.length) {\n      query = \"?\" + query;\n    }\n\n    const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n    return (\n      schema +\n      \"://\" +\n      (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n      port +\n      this.opts.path +\n      query\n    );\n  }\n\n  /**\n   * Feature detection for WebSocket.\n   *\n   * @return {Boolean} whether this transport is available.\n   * @api public\n   */\n  check() {\n    return (\n      !!WebSocket &&\n      !(\"__initialize\" in WebSocket && this.name === WS.prototype.name)\n    );\n  }\n}\n\nmodule.exports = WS;\n","const globalThis = require(\"../globalThis\");\nconst nextTick = (() => {\n  const isPromiseAvailable =\n    typeof Promise === \"function\" && typeof Promise.resolve === \"function\";\n  if (isPromiseAvailable) {\n    return cb => Promise.resolve().then(cb);\n  } else {\n    return cb => setTimeout(cb, 0);\n  }\n})();\n\nmodule.exports = {\n  WebSocket: globalThis.WebSocket || globalThis.MozWebSocket,\n  usingBrowserWebSocket: true,\n  defaultBinaryType: \"arraybuffer\",\n  nextTick\n};\n","exports.encode = require('./encode');\nexports.decode = require('./decode');\n","'use strict';\n\nfunction utf8Write(view, offset, str) {\n  var c = 0;\n  for (var i = 0, l = str.length; i < l; i++) {\n    c = str.charCodeAt(i);\n    if (c < 0x80) {\n      view.setUint8(offset++, c);\n    }\n    else if (c < 0x800) {\n      view.setUint8(offset++, 0xc0 | (c >> 6));\n      view.setUint8(offset++, 0x80 | (c & 0x3f));\n    }\n    else if (c < 0xd800 || c >= 0xe000) {\n      view.setUint8(offset++, 0xe0 | (c >> 12));\n      view.setUint8(offset++, 0x80 | (c >> 6) & 0x3f);\n      view.setUint8(offset++, 0x80 | (c & 0x3f));\n    }\n    else {\n      i++;\n      c = 0x10000 + (((c & 0x3ff) << 10) | (str.charCodeAt(i) & 0x3ff));\n      view.setUint8(offset++, 0xf0 | (c >> 18));\n      view.setUint8(offset++, 0x80 | (c >> 12) & 0x3f);\n      view.setUint8(offset++, 0x80 | (c >> 6) & 0x3f);\n      view.setUint8(offset++, 0x80 | (c & 0x3f));\n    }\n  }\n}\n\nfunction utf8Length(str) {\n  var c = 0, length = 0;\n  for (var i = 0, l = str.length; i < l; i++) {\n    c = str.charCodeAt(i);\n    if (c < 0x80) {\n      length += 1;\n    }\n    else if (c < 0x800) {\n      length += 2;\n    }\n    else if (c < 0xd800 || c >= 0xe000) {\n      length += 3;\n    }\n    else {\n      i++;\n      length += 4;\n    }\n  }\n  return length;\n}\n\nfunction _encode(bytes, defers, value) {\n  var type = typeof value, i = 0, l = 0, hi = 0, lo = 0, length = 0, size = 0;\n\n  if (type === 'string') {\n    length = utf8Length(value);\n\n    // fixstr\n    if (length < 0x20) {\n      bytes.push(length | 0xa0);\n      size = 1;\n    }\n    // str 8\n    else if (length < 0x100) {\n      bytes.push(0xd9, length);\n      size = 2;\n    }\n    // str 16\n    else if (length < 0x10000) {\n      bytes.push(0xda, length >> 8, length);\n      size = 3;\n    }\n    // str 32\n    else if (length < 0x100000000) {\n      bytes.push(0xdb, length >> 24, length >> 16, length >> 8, length);\n      size = 5;\n    } else {\n      throw new Error('String too long');\n    }\n    defers.push({ _str: value, _length: length, _offset: bytes.length });\n    return size + length;\n  }\n  if (type === 'number') {\n    // TODO: encode to float 32?\n\n    // float 64\n    if (Math.floor(value) !== value || !isFinite(value)) {\n      bytes.push(0xcb);\n      defers.push({ _float: value, _length: 8, _offset: bytes.length });\n      return 9;\n    }\n\n    if (value >= 0) {\n      // positive fixnum\n      if (value < 0x80) {\n        bytes.push(value);\n        return 1;\n      }\n      // uint 8\n      if (value < 0x100) {\n        bytes.push(0xcc, value);\n        return 2;\n      }\n      // uint 16\n      if (value < 0x10000) {\n        bytes.push(0xcd, value >> 8, value);\n        return 3;\n      }\n      // uint 32\n      if (value < 0x100000000) {\n        bytes.push(0xce, value >> 24, value >> 16, value >> 8, value);\n        return 5;\n      }\n      // uint 64\n      hi = (value / Math.pow(2, 32)) >> 0;\n      lo = value >>> 0;\n      bytes.push(0xcf, hi >> 24, hi >> 16, hi >> 8, hi, lo >> 24, lo >> 16, lo >> 8, lo);\n      return 9;\n    } else {\n      // negative fixnum\n      if (value >= -0x20) {\n        bytes.push(value);\n        return 1;\n      }\n      // int 8\n      if (value >= -0x80) {\n        bytes.push(0xd0, value);\n        return 2;\n      }\n      // int 16\n      if (value >= -0x8000) {\n        bytes.push(0xd1, value >> 8, value);\n        return 3;\n      }\n      // int 32\n      if (value >= -0x80000000) {\n        bytes.push(0xd2, value >> 24, value >> 16, value >> 8, value);\n        return 5;\n      }\n      // int 64\n      hi = Math.floor(value / Math.pow(2, 32));\n      lo = value >>> 0;\n      bytes.push(0xd3, hi >> 24, hi >> 16, hi >> 8, hi, lo >> 24, lo >> 16, lo >> 8, lo);\n      return 9;\n    }\n  }\n  if (type === 'object') {\n    // nil\n    if (value === null) {\n      bytes.push(0xc0);\n      return 1;\n    }\n\n    if (Array.isArray(value)) {\n      length = value.length;\n\n      // fixarray\n      if (length < 0x10) {\n        bytes.push(length | 0x90);\n        size = 1;\n      }\n      // array 16\n      else if (length < 0x10000) {\n        bytes.push(0xdc, length >> 8, length);\n        size = 3;\n      }\n      // array 32\n      else if (length < 0x100000000) {\n        bytes.push(0xdd, length >> 24, length >> 16, length >> 8, length);\n        size = 5;\n      } else {\n        throw new Error('Array too large');\n      }\n      for (i = 0; i < length; i++) {\n        size += _encode(bytes, defers, value[i]);\n      }\n      return size;\n    }\n\n    // fixext 8 / Date\n    if (value instanceof Date) {\n      var time = value.getTime();\n      hi = Math.floor(time / Math.pow(2, 32));\n      lo = time >>> 0;\n      bytes.push(0xd7, 0, hi >> 24, hi >> 16, hi >> 8, hi, lo >> 24, lo >> 16, lo >> 8, lo);\n      return 10;\n    }\n\n    if (value instanceof ArrayBuffer) {\n      length = value.byteLength;\n\n      // bin 8\n      if (length < 0x100) {\n        bytes.push(0xc4, length);\n        size = 2;\n      } else\n      // bin 16\n      if (length < 0x10000) {\n        bytes.push(0xc5, length >> 8, length);\n        size = 3;\n      } else\n      // bin 32\n      if (length < 0x100000000) {\n        bytes.push(0xc6, length >> 24, length >> 16, length >> 8, length);\n        size = 5;\n      } else {\n        throw new Error('Buffer too large');\n      }\n      defers.push({ _bin: value, _length: length, _offset: bytes.length });\n      return size + length;\n    }\n\n    if (typeof value.toJSON === 'function') {\n      return _encode(bytes, defers, value.toJSON());\n    }\n\n    var keys = [], key = '';\n\n    var allKeys = Object.keys(value);\n    for (i = 0, l = allKeys.length; i < l; i++) {\n      key = allKeys[i];\n      if (typeof value[key] !== 'function') {\n        keys.push(key);\n      }\n    }\n    length = keys.length;\n\n    // fixmap\n    if (length < 0x10) {\n      bytes.push(length | 0x80);\n      size = 1;\n    }\n    // map 16\n    else if (length < 0x10000) {\n      bytes.push(0xde, length >> 8, length);\n      size = 3;\n    }\n    // map 32\n    else if (length < 0x100000000) {\n      bytes.push(0xdf, length >> 24, length >> 16, length >> 8, length);\n      size = 5;\n    } else {\n      throw new Error('Object too large');\n    }\n\n    for (i = 0; i < length; i++) {\n      key = keys[i];\n      size += _encode(bytes, defers, key);\n      size += _encode(bytes, defers, value[key]);\n    }\n    return size;\n  }\n  // false/true\n  if (type === 'boolean') {\n    bytes.push(value ? 0xc3 : 0xc2);\n    return 1;\n  }\n  // fixext 1 / undefined\n  if (type === 'undefined') {\n    bytes.push(0xd4, 0, 0);\n    return 3;\n  }\n  throw new Error('Could not encode');\n}\n\nfunction encode(value) {\n  var bytes = [];\n  var defers = [];\n  var size = _encode(bytes, defers, value);\n  var buf = new ArrayBuffer(size);\n  var view = new DataView(buf);\n\n  var deferIndex = 0;\n  var deferWritten = 0;\n  var nextOffset = -1;\n  if (defers.length > 0) {\n    nextOffset = defers[0]._offset;\n  }\n\n  var defer, deferLength = 0, offset = 0;\n  for (var i = 0, l = bytes.length; i < l; i++) {\n    view.setUint8(deferWritten + i, bytes[i]);\n    if (i + 1 !== nextOffset) { continue; }\n    defer = defers[deferIndex];\n    deferLength = defer._length;\n    offset = deferWritten + nextOffset;\n    if (defer._bin) {\n      var bin = new Uint8Array(defer._bin);\n      for (var j = 0; j < deferLength; j++) {\n        view.setUint8(offset + j, bin[j]);\n      }\n    } else if (defer._str) {\n      utf8Write(view, offset, defer._str);\n    } else if (defer._float !== undefined) {\n      view.setFloat64(offset, defer._float);\n    }\n    deferIndex++;\n    deferWritten += deferLength;\n    if (defers[deferIndex]) {\n      nextOffset = defers[deferIndex]._offset;\n    }\n  }\n  return buf;\n}\n\nmodule.exports = encode;\n","'use strict';\n\nfunction Decoder(buffer) {\n  this._offset = 0;\n  if (buffer instanceof ArrayBuffer) {\n    this._buffer = buffer;\n    this._view = new DataView(this._buffer);\n  } else if (ArrayBuffer.isView(buffer)) {\n    this._buffer = buffer.buffer;\n    this._view = new DataView(this._buffer, buffer.byteOffset, buffer.byteLength);\n  } else {\n    throw new Error('Invalid argument');\n  }\n}\n\nfunction utf8Read(view, offset, length) {\n  var string = '', chr = 0;\n  for (var i = offset, end = offset + length; i < end; i++) {\n    var byte = view.getUint8(i);\n    if ((byte & 0x80) === 0x00) {\n      string += String.fromCharCode(byte);\n      continue;\n    }\n    if ((byte & 0xe0) === 0xc0) {\n      string += String.fromCharCode(\n        ((byte & 0x1f) << 6) |\n        (view.getUint8(++i) & 0x3f)\n      );\n      continue;\n    }\n    if ((byte & 0xf0) === 0xe0) {\n      string += String.fromCharCode(\n        ((byte & 0x0f) << 12) |\n        ((view.getUint8(++i) & 0x3f) << 6) |\n        ((view.getUint8(++i) & 0x3f) << 0)\n      );\n      continue;\n    }\n    if ((byte & 0xf8) === 0xf0) {\n      chr = ((byte & 0x07) << 18) |\n        ((view.getUint8(++i) & 0x3f) << 12) |\n        ((view.getUint8(++i) & 0x3f) << 6) |\n        ((view.getUint8(++i) & 0x3f) << 0);\n      if (chr >= 0x010000) { // surrogate pair\n        chr -= 0x010000;\n        string += String.fromCharCode((chr >>> 10) + 0xD800, (chr & 0x3FF) + 0xDC00);\n      } else {\n        string += String.fromCharCode(chr);\n      }\n      continue;\n    }\n    throw new Error('Invalid byte ' + byte.toString(16));\n  }\n  return string;\n}\n\nDecoder.prototype._array = function (length) {\n  var value = new Array(length);\n  for (var i = 0; i < length; i++) {\n    value[i] = this._parse();\n  }\n  return value;\n};\n\nDecoder.prototype._map = function (length) {\n  var key = '', value = {};\n  for (var i = 0; i < length; i++) {\n    key = this._parse();\n    value[key] = this._parse();\n  }\n  return value;\n};\n\nDecoder.prototype._str = function (length) {\n  var value = utf8Read(this._view, this._offset, length);\n  this._offset += length;\n  return value;\n};\n\nDecoder.prototype._bin = function (length) {\n  var value = this._buffer.slice(this._offset, this._offset + length);\n  this._offset += length;\n  return value;\n};\n\nDecoder.prototype._parse = function () {\n  var prefix = this._view.getUint8(this._offset++);\n  var value, length = 0, type = 0, hi = 0, lo = 0;\n\n  if (prefix < 0xc0) {\n    // positive fixint\n    if (prefix < 0x80) {\n      return prefix;\n    }\n    // fixmap\n    if (prefix < 0x90) {\n      return this._map(prefix & 0x0f);\n    }\n    // fixarray\n    if (prefix < 0xa0) {\n      return this._array(prefix & 0x0f);\n    }\n    // fixstr\n    return this._str(prefix & 0x1f);\n  }\n\n  // negative fixint\n  if (prefix > 0xdf) {\n    return (0xff - prefix + 1) * -1;\n  }\n\n  switch (prefix) {\n    // nil\n    case 0xc0:\n      return null;\n    // false\n    case 0xc2:\n      return false;\n    // true\n    case 0xc3:\n      return true;\n\n    // bin\n    case 0xc4:\n      length = this._view.getUint8(this._offset);\n      this._offset += 1;\n      return this._bin(length);\n    case 0xc5:\n      length = this._view.getUint16(this._offset);\n      this._offset += 2;\n      return this._bin(length);\n    case 0xc6:\n      length = this._view.getUint32(this._offset);\n      this._offset += 4;\n      return this._bin(length);\n\n    // ext\n    case 0xc7:\n      length = this._view.getUint8(this._offset);\n      type = this._view.getInt8(this._offset + 1);\n      this._offset += 2;\n      return [type, this._bin(length)];\n    case 0xc8:\n      length = this._view.getUint16(this._offset);\n      type = this._view.getInt8(this._offset + 2);\n      this._offset += 3;\n      return [type, this._bin(length)];\n    case 0xc9:\n      length = this._view.getUint32(this._offset);\n      type = this._view.getInt8(this._offset + 4);\n      this._offset += 5;\n      return [type, this._bin(length)];\n\n    // float\n    case 0xca:\n      value = this._view.getFloat32(this._offset);\n      this._offset += 4;\n      return value;\n    case 0xcb:\n      value = this._view.getFloat64(this._offset);\n      this._offset += 8;\n      return value;\n\n    // uint\n    case 0xcc:\n      value = this._view.getUint8(this._offset);\n      this._offset += 1;\n      return value;\n    case 0xcd:\n      value = this._view.getUint16(this._offset);\n      this._offset += 2;\n      return value;\n    case 0xce:\n      value = this._view.getUint32(this._offset);\n      this._offset += 4;\n      return value;\n    case 0xcf:\n      hi = this._view.getUint32(this._offset) * Math.pow(2, 32);\n      lo = this._view.getUint32(this._offset + 4);\n      this._offset += 8;\n      return hi + lo;\n\n    // int\n    case 0xd0:\n      value = this._view.getInt8(this._offset);\n      this._offset += 1;\n      return value;\n    case 0xd1:\n      value = this._view.getInt16(this._offset);\n      this._offset += 2;\n      return value;\n    case 0xd2:\n      value = this._view.getInt32(this._offset);\n      this._offset += 4;\n      return value;\n    case 0xd3:\n      hi = this._view.getInt32(this._offset) * Math.pow(2, 32);\n      lo = this._view.getUint32(this._offset + 4);\n      this._offset += 8;\n      return hi + lo;\n\n    // fixext\n    case 0xd4:\n      type = this._view.getInt8(this._offset);\n      this._offset += 1;\n      if (type === 0x00) {\n        this._offset += 1;\n        return void 0;\n      }\n      return [type, this._bin(1)];\n    case 0xd5:\n      type = this._view.getInt8(this._offset);\n      this._offset += 1;\n      return [type, this._bin(2)];\n    case 0xd6:\n      type = this._view.getInt8(this._offset);\n      this._offset += 1;\n      return [type, this._bin(4)];\n    case 0xd7:\n      type = this._view.getInt8(this._offset);\n      this._offset += 1;\n      if (type === 0x00) {\n        hi = this._view.getInt32(this._offset) * Math.pow(2, 32);\n        lo = this._view.getUint32(this._offset + 4);\n        this._offset += 8;\n        return new Date(hi + lo);\n      }\n      return [type, this._bin(8)];\n    case 0xd8:\n      type = this._view.getInt8(this._offset);\n      this._offset += 1;\n      return [type, this._bin(16)];\n\n    // str\n    case 0xd9:\n      length = this._view.getUint8(this._offset);\n      this._offset += 1;\n      return this._str(length);\n    case 0xda:\n      length = this._view.getUint16(this._offset);\n      this._offset += 2;\n      return this._str(length);\n    case 0xdb:\n      length = this._view.getUint32(this._offset);\n      this._offset += 4;\n      return this._str(length);\n\n    // array\n    case 0xdc:\n      length = this._view.getUint16(this._offset);\n      this._offset += 2;\n      return this._array(length);\n    case 0xdd:\n      length = this._view.getUint32(this._offset);\n      this._offset += 4;\n      return this._array(length);\n\n    // map\n    case 0xde:\n      length = this._view.getUint16(this._offset);\n      this._offset += 2;\n      return this._map(length);\n    case 0xdf:\n      length = this._view.getUint32(this._offset);\n      this._offset += 4;\n      return this._map(length);\n  }\n\n  throw new Error('Could not parse');\n};\n\nfunction decode(buffer) {\n  var decoder = new Decoder(buffer);\n  var value = decoder._parse();\n  if (decoder._offset !== buffer.byteLength) {\n    throw new Error((buffer.byteLength - decoder._offset) + ' trailing bytes');\n  }\n  return value;\n}\n\nmodule.exports = decode;\n","\n/**\n * Expose `Backoff`.\n */\n\nmodule.exports = Backoff;\n\n/**\n * Initialize backoff timer with `opts`.\n *\n * - `min` initial timeout in milliseconds [100]\n * - `max` max timeout [10000]\n * - `jitter` [0]\n * - `factor` [2]\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction Backoff(opts) {\n  opts = opts || {};\n  this.ms = opts.min || 100;\n  this.max = opts.max || 10000;\n  this.factor = opts.factor || 2;\n  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;\n  this.attempts = 0;\n}\n\n/**\n * Return the backoff duration.\n *\n * @return {Number}\n * @api public\n */\n\nBackoff.prototype.duration = function(){\n  var ms = this.ms * Math.pow(this.factor, this.attempts++);\n  if (this.jitter) {\n    var rand =  Math.random();\n    var deviation = Math.floor(rand * this.jitter * ms);\n    ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;\n  }\n  return Math.min(ms, this.max) | 0;\n};\n\n/**\n * Reset the number of attempts.\n *\n * @api public\n */\n\nBackoff.prototype.reset = function(){\n  this.attempts = 0;\n};\n\n/**\n * Set the minimum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMin = function(min){\n  this.ms = min;\n};\n\n/**\n * Set the maximum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMax = function(max){\n  this.max = max;\n};\n\n/**\n * Set the jitter\n *\n * @api public\n */\n\nBackoff.prototype.setJitter = function(jitter){\n  this.jitter = jitter;\n};\n\n"],"sourceRoot":""}
\ No newline at end of file
diff --git a/client/tmxloader.js b/client/tmxloader.js
index 7753d20..2b3ff0c 100644
--- a/client/tmxloader.js
+++ b/client/tmxloader.js
@@ -2,68 +2,182 @@ var TMXLoader = function(mapName){
     var self = {};
 
     self.mapName = mapName;
-    self.width = 0;
-    self.height = 0;
+
     self.tileset = {
         firstGID: 0,
         isTsx: false,
+        tsxSource: "",
         source: "",
         tileWidth: 0,
         tileHeight: 0,
         tileCount: 0,
         width: 0,
         height: 0,
+        img: null,
+    };
+
+    self.tile = {
+        id: 0,
+        index: 0,
     };
-    self.tilesets = [];
+
+    self.tiles = [self.tile];
 
     self.layer = {
         id: 0,
-        name: 0,
-        tiles: "",
+        name: "",
+        tiles: [],
+        tilesStr: ""
+    };
+
+    self.layers = {
+        layer: [self.layer]
     };
 
-    self.layers = [];
+    self.map = {
+        width: 0,
+        height: 0,
+        layers: [self.layer],
+        tilesets: [self.tileset],
+
+    };
 
     self.xml = new XMLHttpRequest();
+    self.xml2 = new XMLHttpRequest();
     self.parser = new DOMParser();
 
-    self.xml.open('GET', "/client/assets/maps/" + mapName + ".tmx");
-    self.xml.onload = function(){
-        dom = self.parser.parseFromString(self.xml.response, "text/xml");
-
-        self.width = dom.documentElement.getAttribute('width');
-        self.height = dom.documentElement.getAttribute('height');
-
-        // tilesets
-        for (var i=0; i < dom.documentElement.getElementsByTagName('tileset').length; i++){
-            var tileset = {};
-            tileset.firstGID = dom.documentElement.getElementsByTagName('tileset').item(i).getAttribute('firstgid');
-            tileset.tileWidth = dom.documentElement.getElementsByTagName('tileset').item(i).getAttribute('tilewidth');
-            tileset.tileHeight = dom.documentElement.getElementsByTagName('tileset').item(i).getAttribute('tileheight');
-            tileset.tileCount = dom.documentElement.getElementsByTagName('tileset').item(i).getAttribute('tilecount');
-            if(dom.documentElement.getElementsByTagName('tileset').item(i).hasAttribute('source')){
-                tileset.source = dom.documentElement.getElementsByTagName('tileset').item(i).getAttribute('source');
-                tileset.isTsx=true;
+    self.loadMap = function(){
+        self.xml.open('GET', "/client/assets/maps/" + mapName + ".tmx");
+        self.xml.onload = function(){
+            dom = self.parser.parseFromString(self.xml.response, "text/xml");
+
+            self.map.width = dom.documentElement.getAttribute('width');
+            self.map.height = dom.documentElement.getAttribute('height');
+
+            // tilesets
+            for (var i=0; i < dom.documentElement.getElementsByTagName('tileset').length; i++){
+                var tileset = {};
+                tileset.firstGID = parseInt(dom.documentElement.getElementsByTagName('tileset').item(i).getAttribute('firstgid'));
+                if(!dom.documentElement.getElementsByTagName('tileset').item(i).hasAttribute('source')){
+                    tileset.source = dom.documentElement.getElementsByTagName('tileset').item(i).getElementsByTagName('image')[0].getAttribute('source').replace("../", "/client/assets/");
+                    tileset.width = parseInt(dom.documentElement.getElementsByTagName('tileset').item(i).getElementsByTagName('image')[0].getAttribute('width'));
+                    tileset.height = parseInt(dom.documentElement.getElementsByTagName('tileset').item(i).getElementsByTagName('image')[0].getAttribute('height'));
+                    tileset.tileWidth = parseInt(dom.documentElement.getElementsByTagName('tileset').item(i).getAttribute('tilewidth'));
+                    tileset.tileHeight = parseInt(dom.documentElement.getElementsByTagName('tileset').item(i).getAttribute('tileheight'));
+                    tileset.tileCount = parseInt(dom.documentElement.getElementsByTagName('tileset').item(i).getAttribute('tilecount'));
+                    tileset.img = self.addImg(tileset.source);
+                    self.map.tilesets[i] = tileset;
+                }else{
+                    tileset.isTsx = true;
+                    tileset.tsxSource = dom.documentElement.getElementsByTagName('tileset').item(i).getAttribute('source').replace("../", "/client/assets/");
+                    self.map.tilesets[i] = tileset;
+                    self.loadTSX();
+                }
             }
-            else{
-                tileset.source = dom.documentElement.getElementsByTagName('tileset').item(i).getElementsByTagName('image')[0].getAttribute('source');
-                tileset.width = dom.documentElement.getElementsByTagName('tileset').item(i).getElementsByTagName('image')[0].getAttribute('width');
-                tileset.height = dom.documentElement.getElementsByTagName('tileset').item(i).getElementsByTagName('image')[0].getAttribute('height');
+
+            // layers
+            for (var i=0; i < dom.documentElement.getElementsByTagName('layer').length; i++){
+                var layer = {};
+                layer.name = dom.documentElement.getElementsByTagName('layer').item(i).getAttribute('name');
+                layer.tilesStr = dom.documentElement.getElementsByTagName('layer').item(i).getElementsByTagName('data')[0].innerHTML;
+                layer.id = parseInt(dom.documentElement.getElementsByTagName('layer').item(i).getAttribute('id'));
+                layer.tiles= [];
+                self.map.layers[i] = layer;
             }
-            self.tilesets[i] = tileset;
+            self.parseLayer();
         }
+        self.xml.send();
+    }
+    
+    self.addImg = function(source){
+        var TSet = {};
+        TSet.new = new Image();
+        TSet.new.src = source;
+        return TSet.new;
+    }
+
+    self.loadTSX = function(){
+        for(var i=0; i < self.map.tilesets.length; i++){
+            
+            if(self.map.tilesets[i].isTsx && self.map.tilesets[i].tsxSource != null){
+                self.xml2.open('GET', self.map.tilesets[i].tsxSource);
+                tileset = self.map.tilesets[i];
+                self.xml2.onload = function(){
+                    dom2 = self.parser.parseFromString(self.xml2.response, "text/xml");
+                    tileset.source = "/client/assets/tilesets/" + dom2.documentElement.getElementsByTagName('image')[0].getAttribute('source')
+                    tileset.width = parseInt(dom2.documentElement.getElementsByTagName('image')[0].getAttribute('width'));
+                    tileset.height = parseInt(dom2.documentElement.getElementsByTagName('image')[0].getAttribute('height'));
+                    tileset.tileWidth = parseInt(dom2.documentElement.getAttribute('tilewidth'));
+                    tileset.tileHeight = parseInt(dom2.documentElement.getAttribute('tileheight'));
+                    tileset.tileCount = parseInt(dom2.documentElement.getAttribute('tilecount'));
+                    tileset.img = self.addImg(tileset.source);
+                    tileset.isTsx = false; // prevents from reloading
+                }
+                self.xml2.send();
+            }
+        }
+    }
+
+    self.getTileIdAt = function(x, y, layer){
+        return self.map.layers[layer].tiles[y][x];
+    }
 
-        // layers
-        for (var i=0; i < dom.documentElement.getElementsByTagName('layer').length; i++){
-            var layer = {};
-            layer.name = dom.documentElement.getElementsByTagName('layer').item(i).getAttribute('name');
-            layer.tiles = dom.documentElement.getElementsByTagName('layer').item(i).getElementsByTagName('data')[0].innerHTML;
-            layer.id = dom.documentElement.getElementsByTagName('layer').item(i).getAttribute('id');
-            self.layers[i] = layer;
-            console.log(layer.name);
+    self.parseLayer = function() {
+        for (var i=0; i < self.map.layers.length; i++){
+            for(var mapX = 0; mapX < self.map.height; mapX++){
+                self.map.layers[i].tiles[mapX] = [];
+                for(var mapY = 0; mapY < self.map.width; mapY++){
+                    tileId = parseInt(self.map.layers[i].tilesStr.replace('\n','').split(',')[mapY * self.map.width + mapX]);
+                    self.map.layers[i].tiles[mapX][mapY] = {id : tileId,
+                    index : mapX * self.map.width + mapY };
+                }
+            }
+            self.map.layers[i].tilesStr = "";
         }
     }
+
+    self.getCollision = function(direction){
+        // TODO
+    }
+
+    self.drawLayer = function(layerName, xOffset, yOffset){
+        for(var layerId=0; layerId < self.map.layers.length; layerId++)
+        {
+            var t = 0;
+            if (self.map.layers[layerId].name.toLowerCase().includes(layerName)){
+                for (var mapY=0; mapY < self.map.height; mapY++){
+                    for (var mapX=0; mapX < self.map.width; mapX++){
+                        var gid = self.map.layers[layerId].tiles[mapX][mapY].id;
+        
+                        for(var sets=0; sets< self.map.tilesets.length; sets++)
+                        {
+                            if (gid <= (self.map.tilesets[sets].firstGID + self.map.tilesets[sets].tileCount) &&
+                            gid >= self.map.tilesets[sets].firstGID)
+                                t=sets;
+                        }
+        
+                        tsGid = gid - self.map.tilesets[t].firstGID;
+        
+                        if(self.map.tilesets[t].img == null && tsGid == 0)
+                            continue;
+        
+                        tilesinrow = self.map.tilesets[t].width / self.map.tilesets[t].tileWidth;
+        
+                        y= Math.floor(tsGid / tilesinrow);
+                        x= tsGid % (tilesinrow);
+        
+                        ctx.drawImage(self.map.tilesets[t].img,
+                            x * self.map.tilesets[t].tileWidth, y * self.map.tilesets[t].tileHeight,
+                            self.map.tilesets[t].tileWidth, self.map.tilesets[t].tileHeight,
+                            mapX*self.map.tilesets[t].tileWidth+ xOffset,mapY*self.map.tilesets[t].tileWidth+ yOffset, 
+                            self.map.tilesets[t].tileWidth, self.map.tilesets[t].tileHeight)
+                    }
+                }
+            }
+        }
+    }
+
+    self.loadMap();
     
-    self.xml.send();
     return self;
-}
\ No newline at end of file
+}
diff --git a/docs/ChangeLog b/docs/ChangeLog
new file mode 100644
index 0000000..698efd7
--- /dev/null
+++ b/docs/ChangeLog
@@ -0,0 +1,3 @@
+- added commands @who /who @where /w 
+- implemented TSX loading and rendering like PNG
+- fixed rendering last tile in row from tileset (PNG & TSX)
\ No newline at end of file
diff --git a/docs/ClassStructure.md b/docs/ClassStructure.md
new file mode 100644
index 0000000..76726ac
--- /dev/null
+++ b/docs/ClassStructure.md
@@ -0,0 +1,15 @@
+Client/Server Shared:
+    World:
+        Map:
+            Entities:
+                Players
+                    Player
+                        Guild
+                        Party
+                Monster
+                NPC
+                Warps
+            Items:
+                Equip
+                Usable
+
diff --git a/server/Entities/Bullet.js b/server/Entities/Bullet.js
new file mode 100644
index 0000000..cb5a1a4
--- /dev/null
+++ b/server/Entities/Bullet.js
@@ -0,0 +1,83 @@
+const Entity = require('./Entity');
+const Player = require('./Player');
+
+var Bullet = function(parent, angle) {
+    var self = Entity.Entity();
+    self.id = Math.random();
+    self.speedX = Math.cos(angle/180*Math.PI) *10;
+    self.speedY = Math.sin(angle/180*Math.PI) *10;
+    self.parent = parent;
+    self.timer = 0;
+    self.toRemove = false;
+    var super_update = self.update;
+    self.update = function(){
+        if (self.timer++ > 100)
+            self.toRemove = true;
+        super_update();
+        for (var i in Player.list){
+            var p = Player.list[i];
+            if(self.getDistance(p) < 32 && self.parent !== p.id){
+                p.hp -= 1;
+                if (p.hp <= 0){
+                    var shooter = Player.list[self.parent];
+                    if (shooter)
+                        shooter.score += 1;
+                    p.hp = p.hpMax;
+                    p.x = Math.random() * 500;
+                    p.y = Math.random() * 500;
+
+                }
+                self.toRemove = true;
+            }
+        }
+    }
+
+    self.getInitPack = function() {
+        return {
+            id:self.id,
+            x:self.x,
+            y:self.y,
+            map:self.map,
+        };
+    }
+
+    self.getUpdatePack = function() {
+        return {
+            id:self.id,
+            x:self.x,
+            y:self.y,
+            map:self.map,
+        };
+    }
+
+    Bullet.list[self.id] = self;
+    Entity.initPack.bullet.push(self.getInitPack());
+    return self;
+}
+
+Bullet.list= {};
+
+Bullet.update = function(){
+    var pack = [];
+    for(var i in Bullet.list){
+        var bullet = Bullet.list[i];
+        bullet.update();
+        if(bullet.toRemove){
+            delete Bullet.list[i];
+            Entity.removePack.bullet.push(bullet.id);
+        }
+        else
+            pack.push(bullet.getUpdatePack());
+    }
+    return pack;
+}
+
+Bullet.getAllInitPack = function(){
+    var bullets = [];
+    for(var i in Bullet.list)
+        bullets.push(Bullet.list[i].getInitPack());
+    return bullets;
+}
+
+module.exports = { Bullet };
+exports.list = Bullet.list;
\ No newline at end of file
diff --git a/server/Entities/Entity.js b/server/Entities/Entity.js
new file mode 100644
index 0000000..99d8c0b
--- /dev/null
+++ b/server/Entities/Entity.js
@@ -0,0 +1,28 @@
+
+var initPack = {player:[], bullet:[]};
+var removePack = {player:[], bullet:[]};
+
+var Entity = function(){
+    var self = {
+        x: 250,
+        y: 250,
+        map: '002-1',
+        speedX: 0,
+        speedY: 0,
+        id: "",
+        dir: 0
+    }
+    self.update = function(){
+        self.updatePosition();
+    }
+    self.updatePosition = function(){
+        self.x += self.speedX;
+        self.y += self.speedY;
+    }
+    self.getDistance = function(pt){
+        return Math.sqrt(Math.pow(self.x-pt.x,2)) + Math.pow(self.y-pt.y,2);
+    }
+    return self;
+}
+
+module.exports = { Entity, initPack, removePack };
\ No newline at end of file
diff --git a/server/Entities/Player.js b/server/Entities/Player.js
new file mode 100644
index 0000000..6bc0e65
--- /dev/null
+++ b/server/Entities/Player.js
@@ -0,0 +1,156 @@
+var consts = require('../../client/consts')
+const Entity = require('./Entity');
+const Bullet = require('./Bullet');
+
+
+var Player = function(id){
+    var self = Entity.Entity();
+    self.id = id;
+    self.playerName = "";
+    self.number = "" + Math.floor(10 * Math.random());
+    self.pressingRight = false;
+    self.pressingLeft = false;
+    self.pressingUp = false;
+    self.pressingDown = false;
+    self.pressingAttack = false;
+    self.mouseAngle = 0;
+    self.maxSpeed = 10;
+    self.hp = 10;
+    self.hpMax = 10;
+    self.score = 0;
+
+    var super_update = self.update;
+    self.update = function(){
+        self.updateSpeed();
+        super_update();
+        if(self.pressingAttack){
+            self.shootBullet(self.mouseAngle);
+        }
+    }
+
+    self.shootBullet = function(angle){
+        var b = Bullet.Bullet(self.id, angle);
+        b.x = self.x
+        b.y = self.y
+    }
+
+    self.updateSpeed = function(){
+        if(self.pressingRight){
+            self.speedX = self.maxSpeed;
+            self.dir = consts.DIR_RIGHT;
+        }
+        else if(self.pressingLeft){
+            self.speedX = -self.maxSpeed;
+            self.dir = consts.DIR_LEFT;
+        }
+        else
+            self.speedX = 0;
+
+        if(self.pressingUp){
+            self.speedY = -self.maxSpeed;
+            self.dir = consts.DIR_UP;
+        }
+        else if(self.pressingDown){
+            self.speedY = self.maxSpeed;
+            self.dir = consts.DIR_DOWN;
+        }
+        else
+            self.speedY = 0;
+    }
+
+    self.getInitPack = function() {
+        return {
+            id:self.id,
+            playerName:self.playerName,
+            x:self.x,
+            y:self.y,
+            map:self.map,
+            number:self.number,
+            hp:self.hp,
+            hpMax:self.hpMax,
+            score:self.score,
+            dir:self.dir,
+        };
+    }
+    self.getUpdatePack = function() {
+        return {
+            id:self.id,
+            playerName:self.playerName,
+            x:self.x,
+            y:self.y,
+            map:self.map,
+            score:self.score,
+            hp:self.hp,
+            dir:self.dir,
+        };
+    }
+    Player.list[id] = self;
+    Entity.initPack.player.push(self.getInitPack());
+    return self;
+}
+
+Player.list = {};
+
+Player.onConnect = function(socket, pName){
+    var player = Player(socket.id);
+
+    player.playerName = pName;
+
+    socket.on('keyPress', function(data){
+        if (data.inputId === 'left'){
+            player.pressingLeft = data.state;
+            player.dir = consts.DIR_LEFT;
+        }
+        else if (data.inputId === 'right'){
+            player.pressingRight = data.state;
+            player.dir = consts.DIR_RIGHT;
+        }
+        else if (data.inputId === 'up'){
+            player.pressingUp = data.state;
+            player.dir = consts.DIR_UP;
+        }
+        else if (data.inputId === 'down'){
+            player.pressingDown = data.state;
+            player.dir = consts.DIR_DOWN;
+        }
+        else if (data.inputId === 'attack'){
+            player.pressingAttack = data.state;
+        }
+        else if (data.inputId === 'mouseAngle'){
+            player.mouseAngle = data.state;
+        }
+    });
+
+    socket.emit('init',{
+        selfId:socket.id,
+        player:Player.getAllInitPack(),
+        bullet:Bullet.Bullet.getAllInitPack(),
+    });
+}
+
+Player.getAllInitPack = function(){
+    var players = [];
+    for(var i in Player.list)
+        players.push(Player.list[i].getInitPack());
+    return players;
+}
+
+Player.onDisconnect = function(socket){
+    delete Player.list[socket.id];
+    Entity.removePack.player.push(socket.id);
+}
+
+Player.update = function(){
+    var pack = [];
+    for(var i in Player.list){
+        var player = Player.list[i];
+        player.update();
+        pack.push(player.getUpdatePack());
+    }
+    return pack;
+
+
+}
+
+module.exports = { Player };
+exports.list = Player.list;
\ No newline at end of file
-- 
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