mqtt.min.js

(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.mqtt=f()}})(function(){var define,module,exports;return function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s}({1:[function(require,module,exports){(function(process,global){"use strict";var events=require("events");var Store=require("./store");var eos=require("end-of-stream");var mqttPacket=require("mqtt-packet");var Writable=require("readable-stream").Writable;var inherits=require("inherits");var reInterval=require("reinterval");var validations=require("./validations");var xtend=require("xtend");var setImmediate=global.setImmediate||function(callback){process.nextTick(callback)};var defaultConnectOptions={keepalive:60,reschedulePings:true,protocolId:"MQTT",protocolVersion:4,reconnectPeriod:1e3,connectTimeout:30*1e3,clean:true,resubscribe:true};function defaultId(){return"mqttjs_"+Math.random().toString(16).substr(2,8)}function sendPacket(client,packet,cb){client.emit("packetsend",packet);var result=mqttPacket.writeToStream(packet,client.stream);if(!result&&cb){client.stream.once("drain",cb)}else if(cb){cb()}}function storeAndSend(client,packet,cb){client.outgoingStore.put(packet,function storedPacket(err){if(err){return cb&&cb(err)}sendPacket(client,packet,cb)})}function nop(){}function MqttClient(streamBuilder,options){var k;var that=this;if(!(this instanceof MqttClient)){return new MqttClient(streamBuilder,options)}this.options=options||{};for(k in defaultConnectOptions){if(typeof this.options[k]==="undefined"){this.options[k]=defaultConnectOptions[k]}else{this.options[k]=options[k]}}this.options.clientId=typeof this.options.clientId==="string"?this.options.clientId:defaultId();this.streamBuilder=streamBuilder;this.outgoingStore=this.options.outgoingStore||new Store;this.incomingStore=this.options.incomingStore||new Store;this.queueQoSZero=this.options.queueQoSZero===undefined?true:this.options.queueQoSZero;this._resubscribeTopics={};this.messageIdToTopic={};this.pingTimer=null;this.connected=false;this.disconnecting=false;this.queue=[];this.connackTimer=null;this.reconnectTimer=null;this.nextId=Math.floor(Math.random()*65535);this.outgoing={};this.on("connect",function(){if(this.disconnected){return}this.connected=true;var outStore=null;outStore=this.outgoingStore.createStream();outStore.once("readable",function(){function storeDeliver(){var packet=outStore.read(1);var cb;if(!packet){return}if(!that.disconnecting&&!that.reconnectTimer&&that.options.reconnectPeriod>0){outStore.read(0);cb=that.outgoing[packet.messageId];that.outgoing[packet.messageId]=function(err,status){if(cb){cb(err,status)}storeDeliver()};that._sendPacket(packet)}else if(outStore.destroy){outStore.destroy()}}storeDeliver()}).on("error",this.emit.bind(this,"error"))});this.on("close",function(){this.connected=false;clearTimeout(this.connackTimer)});this.on("connect",this._setupPingTimer);this.on("connect",function(){var queue=this.queue;function deliver(){var entry=queue.shift();var packet=null;if(!entry){return}packet=entry.packet;that._sendPacket(packet,function(err){if(entry.cb){entry.cb(err)}deliver()})}deliver()});var firstConnection=true;this.on("connect",function(){if(!firstConnection&&this.options.clean&&Object.keys(this._resubscribeTopics).length>0){if(this.options.resubscribe){this._resubscribeTopics.resubscribe=true;this.subscribe(this._resubscribeTopics)}else{this._resubscribeTopics={}}}firstConnection=false});this.on("close",function(){if(that.pingTimer!==null){that.pingTimer.clear();that.pingTimer=null}});this.on("close",this._setupReconnect);events.EventEmitter.call(this);this._setupStream()}inherits(MqttClient,events.EventEmitter);MqttClient.prototype._setupStream=function(){var connectPacket;var that=this;var writable=new Writable;var parser=mqttPacket.parser(this.options);var completeParse=null;var packets=[];this._clearReconnect();this.stream=this.streamBuilder(this);parser.on("packet",function(packet){packets.push(packet)});function nextTickWork(){process.nextTick(work)}function work(){var packet=packets.shift();var done=completeParse;if(packet){that._handlePacket(packet,nextTickWork)}else{completeParse=null;done()}}writable._write=function(buf,enc,done){completeParse=done;parser.parse(buf);work()};this.stream.pipe(writable);this.stream.on("error",nop);eos(this.stream,this.emit.bind(this,"close"));connectPacket=Object.create(this.options);connectPacket.cmd="connect";sendPacket(this,connectPacket);parser.on("error",this.emit.bind(this,"error"));this.stream.setMaxListeners(1e3);clearTimeout(this.connackTimer);this.connackTimer=setTimeout(function(){that._cleanUp(true)},this.options.connectTimeout)};MqttClient.prototype._handlePacket=function(packet,done){this.emit("packetreceive",packet);switch(packet.cmd){case"publish":this._handlePublish(packet,done);break;case"puback":case"pubrec":case"pubcomp":case"suback":case"unsuback":this._handleAck(packet);done();break;case"pubrel":this._handlePubrel(packet,done);break;case"connack":this._handleConnack(packet);done();break;case"pingresp":this._handlePingresp(packet);done();break;default:break}};MqttClient.prototype._checkDisconnecting=function(callback){if(this.disconnecting){if(callback){callback(new Error("client disconnecting"))}else{this.emit("error",new Error("client disconnecting"))}}return this.disconnecting};MqttClient.prototype.publish=function(topic,message,opts,callback){var packet;if(typeof opts==="function"){callback=opts;opts=null}var defaultOpts={qos:0,retain:false,dup:false};opts=xtend(defaultOpts,opts);if(this._checkDisconnecting(callback)){return this}packet={cmd:"publish",topic:topic,payload:message,qos:opts.qos,retain:opts.retain,messageId:this._nextId(),dup:opts.dup};switch(opts.qos){case 1:case 2:this.outgoing[packet.messageId]=callback||nop;this._sendPacket(packet);break;default:this._sendPacket(packet,callback);break}return this};MqttClient.prototype.subscribe=function(){var packet;var args=Array.prototype.slice.call(arguments);var subs=[];var obj=args.shift();var resubscribe=obj.resubscribe;var callback=args.pop()||nop;var opts=args.pop();var invalidTopic;var that=this;delete obj.resubscribe;if(typeof obj==="string"){obj=[obj]}if(typeof callback!=="function"){opts=callback;callback=nop}invalidTopic=validations.validateTopics(obj);if(invalidTopic!==null){setImmediate(callback,new Error("Invalid topic "+invalidTopic));return this}if(this._checkDisconnecting(callback)){return this}var defaultOpts={qos:0};opts=xtend(defaultOpts,opts);if(Array.isArray(obj)){obj.forEach(function(topic){if(that._resubscribeTopics[topic]<opts.qos||!that._resubscribeTopics.hasOwnProperty(topic)||resubscribe){subs.push({topic:topic,qos:opts.qos})}})}else{Object.keys(obj).forEach(function(k){if(that._resubscribeTopics[k]<obj[k]||!that._resubscribeTopics.hasOwnProperty(k)||resubscribe){subs.push({topic:k,qos:obj[k]})}})}packet={cmd:"subscribe",subscriptions:subs,qos:1,retain:false,dup:false,messageId:this._nextId()};if(!subs.length){callback(null,[]);return}if(this.options.resubscribe){var topics=[];subs.forEach(function(sub){if(that.options.reconnectPeriod>0){that._resubscribeTopics[sub.topic]=sub.qos;topics.push(sub.topic)}});that.messageIdToTopic[packet.messageId]=topics}this.outgoing[packet.messageId]=function(err,packet){if(!err){var granted=packet.granted;for(var i=0;i<granted.length;i+=1){subs[i].qos=granted[i]}}callback(err,subs)};this._sendPacket(packet);return this};MqttClient.prototype.unsubscribe=function(topic,callback){var packet={cmd:"unsubscribe",qos:1,messageId:this._nextId()};var that=this;callback=callback||nop;if(this._checkDisconnecting(callback)){return this}if(typeof topic==="string"){packet.unsubscriptions=[topic]}else if(typeof topic==="object"&&topic.length){packet.unsubscriptions=topic}if(this.options.resubscribe){packet.unsubscriptions.forEach(function(topic){delete that._resubscribeTopics[topic]})}this.outgoing[packet.messageId]=callback;this._sendPacket(packet);return this};MqttClient.prototype.end=function(force,cb){var that=this;if(typeof force==="function"){cb=force;force=false}function closeStores(){that.disconnected=true;that.incomingStore.close(function(){that.outgoingStore.close(cb)});if(that._deferredReconnect){that._deferredReconnect()}}function finish(){that._cleanUp(force,setImmediate.bind(null,closeStores))}if(this.disconnecting){return this}this._clearReconnect();this.disconnecting=true;if(!force&&Object.keys(this.outgoing).length>0){this.once("outgoingEmpty",setTimeout.bind(null,finish,10))}else{finish()}return this};MqttClient.prototype.removeOutgoingMessage=function(mid){var cb=this.outgoing[mid];delete this.outgoing[mid];this.outgoingStore.del({messageId:mid},function(){cb(new Error("Message removed"))});return this};MqttClient.prototype.reconnect=function(opts){var that=this;var f=function(){if(opts){that.options.incomingStore=opts.incomingStore;that.options.outgoingStore=opts.outgoingStore}else{that.options.incomingStore=null;that.options.outgoingStore=null}that.incomingStore=that.options.incomingStore||new Store;that.outgoingStore=that.options.outgoingStore||new Store;that.disconnecting=false;that.disconnected=false;that._deferredReconnect=null;that._reconnect()};if(this.disconnecting&&!this.disconnected){this._deferredReconnect=f}else{f()}return this};MqttClient.prototype._reconnect=function(){this.emit("reconnect");this._setupStream()};MqttClient.prototype._setupReconnect=function(){var that=this;if(!that.disconnecting&&!that.reconnectTimer&&that.options.reconnectPeriod>0){if(!this.reconnecting){this.emit("offline");this.reconnecting=true}that.reconnectTimer=setInterval(function(){that._reconnect()},that.options.reconnectPeriod)}};MqttClient.prototype._clearReconnect=function(){if(this.reconnectTimer){clearInterval(this.reconnectTimer);this.reconnectTimer=null}};MqttClient.prototype._cleanUp=function(forced,done){if(done){this.stream.on("close",done)}if(forced){this.stream.destroy()}else{this._sendPacket({cmd:"disconnect"},setImmediate.bind(null,this.stream.end.bind(this.stream)))}if(!this.disconnecting){this._clearReconnect();this._setupReconnect()}if(this.pingTimer!==null){this.pingTimer.clear();this.pingTimer=null}if(done&&!this.connected){this.stream.removeListener("close",done);done()}};MqttClient.prototype._sendPacket=function(packet,cb){if(!this.connected){if((packet.qos||0)===0&&this.queueQoSZero||packet.cmd!=="publish"){this.queue.push({packet:packet,cb:cb})}else if(packet.qos>0){cb=this.outgoing[packet.messageId];this.outgoingStore.put(packet,function(err){if(err){return cb&&cb(err)}})}else if(cb){cb(new Error("No connection to broker"))}return}this._shiftPingInterval();if(packet.cmd!=="publish"){sendPacket(this,packet,cb);return}switch(packet.qos){case 2:case 1:storeAndSend(this,packet,cb);break;case 0:default:sendPacket(this,packet,cb);break}};MqttClient.prototype._setupPingTimer=function(){var that=this;if(!this.pingTimer&&this.options.keepalive){this.pingResp=true;this.pingTimer=reInterval(function(){that._checkPing()},this.options.keepalive*1e3)}};MqttClient.prototype._shiftPingInterval=function(){if(this.pingTimer&&this.options.keepalive&&this.options.reschedulePings){this.pingTimer.reschedule(this.options.keepalive*1e3)}};MqttClient.prototype._checkPing=function(){if(this.pingResp){this.pingResp=false;this._sendPacket({cmd:"pingreq"})}else{this._cleanUp(true)}};MqttClient.prototype._handlePingresp=function(){this.pingResp=true};MqttClient.prototype._handleConnack=function(packet){var rc=packet.returnCode;var errors=["","Unacceptable protocol version","Identifier rejected","Server unavailable","Bad username or password","Not authorized"];clearTimeout(this.connackTimer);if(rc===0){this.reconnecting=false;this.emit("connect",packet)}else if(rc>0){var err=new Error("Connection refused: "+errors[rc]);err.code=rc;this.emit("error",err)}};MqttClient.prototype._handlePublish=function(packet,done){var topic=packet.topic.toString();var message=packet.payload;var qos=packet.qos;var mid=packet.messageId;var that=this;switch(qos){case 2:this.incomingStore.put(packet,function(){that._sendPacket({cmd:"pubrec",messageId:mid},done)});break;case 1:this.emit("message",topic,message,packet);this.handleMessage(packet,function(err){if(err){return done&&done(err)}that._sendPacket({cmd:"puback",messageId:mid},done)});break;case 0:this.emit("message",topic,message,packet);this.handleMessage(packet,done);break;default:break}};MqttClient.prototype.handleMessage=function(packet,callback){callback()};MqttClient.prototype._handleAck=function(packet){var mid=packet.messageId;var type=packet.cmd;var response=null;var cb=this.outgoing[mid];var that=this;if(!cb){return}switch(type){case"pubcomp":case"puback":delete this.outgoing[mid];this.outgoingStore.del(packet,cb);break;case"pubrec":response={cmd:"pubrel",qos:2,messageId:mid};this._sendPacket(response);break;case"suback":delete this.outgoing[mid];if(packet.granted.length===1&&(packet.granted[0]&128)!==0){var topics=this.messageIdToTopic[mid];if(topics){topics.forEach(function(topic){delete that._resubscribeTopics[topic]})}}cb(null,packet);break;case"unsuback":delete this.outgoing[mid];cb(null);break;default:that.emit("error",new Error("unrecognized packet type"))}if(this.disconnecting&&Object.keys(this.outgoing).length===0){this.emit("outgoingEmpty")}};MqttClient.prototype._handlePubrel=function(packet,callback){var mid=packet.messageId;var that=this;var comp={cmd:"pubcomp",messageId:mid};that.incomingStore.get(packet,function(err,pub){if(!err&&pub.cmd!=="pubrel"){that.emit("message",pub.topic,pub.payload,pub);that.incomingStore.put(packet);that.handleMessage(pub,function(err){if(err){return callback&&callback(err)}that._sendPacket(comp,callback)})}else{that._sendPacket(comp,callback)}})};MqttClient.prototype._nextId=function(){var id=this.nextId++;if(id===65535){this.nextId=1}return id};MqttClient.prototype.getLastMessageId=function(){return this.nextId===1?65535:this.nextId-1};module.exports=MqttClient}).call(this,require("_process"),typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{"./store":6,"./validations":7,_process:30,"end-of-stream":15,events:16,inherits:18,"mqtt-packet":23,"readable-stream":44,reinterval:45,xtend:58}],2:[function(require,module,exports){"use strict";var net=require("net");function buildBuilder(client,opts){var port,host;opts.port=opts.port||1883;opts.hostname=opts.hostname||opts.host||"localhost";port=opts.port;host=opts.hostname;return net.createConnection(port,host)}module.exports=buildBuilder},{net:11}],3:[function(require,module,exports){"use strict";var tls=require("tls");function buildBuilder(mqttClient,opts){var connection;opts.port=opts.port||8883;opts.host=opts.hostname||opts.host||"localhost";opts.rejectUnauthorized=opts.rejectUnauthorized!==false;delete opts.path;connection=tls.connect(opts);connection.on("secureConnect",function(){if(opts.rejectUnauthorized&&!connection.authorized){connection.emit("error",new Error("TLS not authorized"))}else{connection.removeListener("error",handleTLSerrors)}});function handleTLSerrors(err){if(opts.rejectUnauthorized){mqttClient.emit("error",err)}connection.end()}connection.on("error",handleTLSerrors);return connection}module.exports=buildBuilder},{tls:11}],4:[function(require,module,exports){(function(process){"use strict";var websocket=require("websocket-stream");var urlModule=require("url");var WSS_OPTIONS=["rejectUnauthorized","ca","cert","key","pfx","passphrase"];var IS_BROWSER=process.title==="browser";function buildUrl(opts,client){var url=opts.protocol+"://"+opts.hostname+":"+opts.port+opts.path;if(typeof opts.transformWsUrl==="function"){url=opts.transformWsUrl(url,opts,client)}return url}function setDefaultOpts(opts){if(!opts.hostname){opts.hostname="localhost"}if(!opts.port){if(opts.protocol==="wss"){opts.port=443}else{opts.port=80}}if(!opts.path){opts.path="/"}if(!opts.wsOptions){opts.wsOptions={}}if(!IS_BROWSER&&opts.protocol==="wss"){WSS_OPTIONS.forEach(function(prop){if(opts.hasOwnProperty(prop)&&!opts.wsOptions.hasOwnProperty(prop)){opts.wsOptions[prop]=opts[prop]}})}}function createWebSocket(client,opts){var websocketSubProtocol=opts.protocolId==="MQIsdp"&&opts.protocolVersion===3?"mqttv3.1":"mqtt";setDefaultOpts(opts);var url=buildUrl(opts,client);return websocket(url,[websocketSubProtocol],opts.wsOptions)}function buildBuilder(client,opts){return createWebSocket(client,opts)}function buildBuilderBrowser(client,opts){if(!opts.hostname){opts.hostname=opts.host}if(!opts.hostname){if(typeof document==="undefined"){throw new Error("Could not determine host. Specify host manually.")}var parsed=urlModule.parse(document.URL);opts.hostname=parsed.hostname;if(!opts.port){opts.port=parsed.port}}return createWebSocket(client,opts)}if(IS_BROWSER){module.exports=buildBuilderBrowser}else{module.exports=buildBuilder}}).call(this,require("_process"))},{_process:30,url:49,"websocket-stream":55}],5:[function(require,module,exports){"use strict";var socketOpen=false;var socketMsgQueue=[];function sendSocketMessage(msg){if(socketOpen){wx.sendSocketMessage({data:msg})}else{socketMsgQueue.push(msg)}}function WebSocket(url,protocols){var ws={OPEN:1,CLOSING:2,CLOSED:3,readyState:socketOpen?1:0,send:sendSocketMessage,close:wx.closeSocket,onopen:null,onmessage:null,onclose:null,onerror:null};wx.connectSocket({url:url,protocols:protocols});wx.onSocketOpen(function(res){ws.readyState=ws.OPEN;socketOpen=true;for(var i=0;i<socketMsgQueue.length;i++){sendSocketMessage(socketMsgQueue[i])}socketMsgQueue=[];ws.onopen&&ws.onopen.apply(ws,arguments)});wx.onSocketMessage(function(res){ws.onmessage&&ws.onmessage.apply(ws,arguments)});wx.onSocketClose(function(){ws.onclose&&ws.onclose.apply(ws,arguments);ws.readyState=ws.CLOSED;socketOpen=false});wx.onSocketError(function(){ws.onerror&&ws.onerror.apply(ws,arguments);ws.readyState=ws.CLOSED;socketOpen=false});return ws}var websocket=require("websocket-stream");var urlModule=require("url");function buildUrl(opts,client){var protocol=opts.protocol==="wxs"?"wss":"ws";var url=protocol+"://"+opts.hostname+":"+opts.port+opts.path;if(typeof opts.transformWsUrl==="function"){url=opts.transformWsUrl(url,opts,client)}return url}function setDefaultOpts(opts){if(!opts.hostname){opts.hostname="localhost"}if(!opts.port){if(opts.protocol==="wss"){opts.port=443}else{opts.port=80}}if(!opts.path){opts.path="/"}if(!opts.wsOptions){opts.wsOptions={}}}function createWebSocket(client,opts){var websocketSubProtocol=opts.protocolId==="MQIsdp"&&opts.protocolVersion===3?"mqttv3.1":"mqtt";setDefaultOpts(opts);var url=buildUrl(opts,client);return websocket(WebSocket(url,[websocketSubProtocol]))}function buildBuilder(client,opts){if(!opts.hostname){opts.hostname=opts.host}if(!opts.hostname){if(typeof document==="undefined"){throw new Error("Could not determine host. Specify host manually.")}var parsed=urlModule.parse(document.URL);opts.hostname=parsed.hostname;if(!opts.port){opts.port=parsed.port}}return createWebSocket(client,opts)}module.exports=buildBuilder},{url:49,"websocket-stream":55}],6:[function(require,module,exports){(function(process){"use strict";var xtend=require("xtend");var Readable=require("readable-stream").Readable;var streamsOpts={objectMode:true};var defaultStoreOptions={clean:true};function Store(options){if(!(this instanceof Store)){return new Store(options)}this.options=options||{};this.options=xtend(defaultStoreOptions,options);this._inflights={}}Store.prototype.put=function(packet,cb){this._inflights[packet.messageId]=packet;if(cb){cb()}return this};Store.prototype.createStream=function(){var stream=new Readable(streamsOpts);var inflights=this._inflights;var ids=Object.keys(this._inflights);var destroyed=false;var i=0;stream._read=function(){if(!destroyed&&i<ids.length){this.push(inflights[ids[i++]])}else{this.push(null)}};stream.destroy=function(){if(destroyed){return}var self=this;destroyed=true;process.nextTick(function(){self.emit("close")})};return stream};Store.prototype.del=function(packet,cb){packet=this._inflights[packet.messageId];if(packet){delete this._inflights[packet.messageId];cb(null,packet)}else if(cb){cb(new Error("missing packet"))}return this};Store.prototype.get=function(packet,cb){packet=this._inflights[packet.messageId];if(packet){cb(null,packet)}else if(cb){cb(new Error("missing packet"))}return this};Store.prototype.close=function(cb){if(this.options.clean){this._inflights=null}if(cb){cb()}};module.exports=Store}).call(this,require("_process"))},{_process:30,"readable-stream":44,xtend:58}],7:[function(require,module,exports){"use strict";function validateTopic(topic){var parts=topic.split("/");for(var i=0;i<parts.length;i++){if(parts[i]==="+"){continue}if(parts[i]==="#"){return i===parts.length-1}if(parts[i].indexOf("+")!==-1||parts[i].indexOf("#")!==-1){return false}}return true}function validateTopics(topics){if(topics.length===0){return"empty_topic_list"}for(var i=0;i<topics.length;i++){if(!validateTopic(topics[i])){return topics[i]}}return null}module.exports={validateTopics:validateTopics}},{}],8:[function(require,module,exports){(function(process){"use strict";var MqttClient=require("../client");var Store=require("../store");var url=require("url");var xtend=require("xtend");var protocols={};if(process.title!=="browser"){protocols.mqtt=require("./tcp");protocols.tcp=require("./tcp");protocols.ssl=require("./tls");protocols.tls=require("./tls");protocols.mqtts=require("./tls")}else{protocols.wx=require("./wx");protocols.wxs=require("./wx")}protocols.ws=require("./ws");protocols.wss=require("./ws");function parseAuthOptions(opts){var matches;if(opts.auth){matches=opts.auth.match(/^(.+):(.+)$/);if(matches){opts.username=matches[1];opts.password=matches[2]}else{opts.username=opts.auth}}}function connect(brokerUrl,opts){if(typeof brokerUrl==="object"&&!opts){opts=brokerUrl;brokerUrl=null}opts=opts||{};if(brokerUrl){var parsed=url.parse(brokerUrl,true);if(parsed.port!=null){parsed.port=Number(parsed.port)}opts=xtend(parsed,opts);if(opts.protocol===null){throw new Error("Missing protocol")}opts.protocol=opts.protocol.replace(/:$/,"")}parseAuthOptions(opts);if(opts.query&&typeof opts.query.clientId==="string"){opts.clientId=opts.query.clientId}if(opts.cert&&opts.key){if(opts.protocol){if(["mqtts","wss","wxs"].indexOf(opts.protocol)===-1){switch(opts.protocol){case"mqtt":opts.protocol="mqtts";break;case"ws":opts.protocol="wss";break;case"wx":opts.protocol="wxs";break;default:throw new Error('Unknown protocol for secure connection: "'+opts.protocol+'"!')}}}else{throw new Error("Missing secure protocol key")}}if(!protocols[opts.protocol]){var isSecure=["mqtts","wss"].indexOf(opts.protocol)!==-1;opts.protocol=["mqtt","mqtts","ws","wss","wx","wxs"].filter(function(key,index){if(isSecure&&index%2===0){return false}return typeof protocols[key]==="function"})[0]}if(opts.clean===false&&!opts.clientId){throw new Error("Missing clientId for unclean clients")}function wrapper(client){if(opts.servers){if(!client._reconnectCount||client._reconnectCount===opts.servers.length){client._reconnectCount=0}opts.host=opts.servers[client._reconnectCount].host;opts.port=opts.servers[client._reconnectCount].port;opts.hostname=opts.host;client._reconnectCount++}return protocols[opts.protocol](client,opts)}return new MqttClient(wrapper,opts)}module.exports=connect;module.exports.connect=connect;module.exports.MqttClient=MqttClient;module.exports.Store=Store}).call(this,require("_process"))},{"../client":1,"../store":6,"./tcp":2,"./tls":3,"./ws":4,"./wx":5,_process:30,url:49,xtend:58}],9:[function(require,module,exports){"use strict";exports.byteLength=byteLength;exports.toByteArray=toByteArray;exports.fromByteArray=fromByteArray;var lookup=[];var revLookup=[];var Arr=typeof Uint8Array!=="undefined"?Uint8Array:Array;var code="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";for(var i=0,len=code.length;i<len;++i){lookup[i]=code[i];revLookup[code.charCodeAt(i)]=i}revLookup["-".charCodeAt(0)]=62;revLookup["_".charCodeAt(0)]=63;function placeHoldersCount(b64){var len=b64.length;if(len%4>0){throw new Error("Invalid string. Length must be a multiple of 4")}return b64[len-2]==="="?2:b64[len-1]==="="?1:0}function byteLength(b64){return b64.length*3/4-placeHoldersCount(b64)}function toByteArray(b64){var i,l,tmp,placeHolders,arr;var len=b64.length;placeHolders=placeHoldersCount(b64);arr=new Arr(len*3/4-placeHolders);l=placeHolders>0?len-4:len;var L=0;for(i=0;i<l;i+=4){tmp=revLookup[b64.charCodeAt(i)]<<18|revLookup[b64.charCodeAt(i+1)]<<12|revLookup[b64.charCodeAt(i+2)]<<6|revLookup[b64.charCodeAt(i+3)];arr[L++]=tmp>>16&255;arr[L++]=tmp>>8&255;arr[L++]=tmp&255}if(placeHolders===2){tmp=revLookup[b64.charCodeAt(i)]<<2|revLookup[b64.charCodeAt(i+1)]>>4;arr[L++]=tmp&255}else if(placeHolders===1){tmp=revLookup[b64.charCodeAt(i)]<<10|revLookup[b64.charCodeAt(i+1)]<<4|revLookup[b64.charCodeAt(i+2)]>>2;arr[L++]=tmp>>8&255;arr[L++]=tmp&255}return arr}function tripletToBase64(num){return lookup[num>>18&63]+lookup[num>>12&63]+lookup[num>>6&63]+lookup[num&63]}function encodeChunk(uint8,start,end){var tmp;var output=[];for(var i=start;i<end;i+=3){tmp=(uint8[i]<<16)+(uint8[i+1]<<8)+uint8[i+2];output.push(tripletToBase64(tmp))}return output.join("")}function fromByteArray(uint8){var tmp;var len=uint8.length;var extraBytes=len%3;var output="";var parts=[];var maxChunkLength=16383;for(var i=0,len2=len-extraBytes;i<len2;i+=maxChunkLength){parts.push(encodeChunk(uint8,i,i+maxChunkLength>len2?len2:i+maxChunkLength))}if(extraBytes===1){tmp=uint8[len-1];output+=lookup[tmp>>2];output+=lookup[tmp<<4&63];output+="=="}else if(extraBytes===2){tmp=(uint8[len-2]<<8)+uint8[len-1];output+=lookup[tmp>>10];output+=lookup[tmp>>4&63];output+=lookup[tmp<<2&63];output+="="}parts.push(output);return parts.join("")}},{}],10:[function(require,module,exports){(function(Buffer){var DuplexStream=require("readable-stream/duplex"),util=require("util");function BufferList(callback){if(!(this instanceof BufferList))return new BufferList(callback);this._bufs=[];this.length=0;if(typeof callback=="function"){this._callback=callback;var piper=function piper(err){if(this._callback){this._callback(err);this._callback=null}}.bind(this);this.on("pipe",function onPipe(src){src.on("error",piper)});this.on("unpipe",function onUnpipe(src){src.removeListener("error",piper)})}else{this.append(callback)}DuplexStream.call(this)}util.inherits(BufferList,DuplexStream);BufferList.prototype._offset=function _offset(offset){var tot=0,i=0,_t;if(offset===0)return[0,0];for(;i<this._bufs.length;i++){_t=tot+this._bufs[i].length;if(offset<_t||i==this._bufs.length-1)return[i,offset-tot];tot=_t}};BufferList.prototype.append=function append(buf){var i=0;if(Buffer.isBuffer(buf)){this._appendBuffer(buf)}else if(Array.isArray(buf)){for(;i<buf.length;i++)this.append(buf[i])}else if(buf instanceof BufferList){for(;i<buf._bufs.length;i++)this.append(buf._bufs[i])}else if(buf!=null){if(typeof buf=="number")buf=buf.toString();this._appendBuffer(new Buffer(buf))}return this};BufferList.prototype._appendBuffer=function appendBuffer(buf){this._bufs.push(buf);this.length+=buf.length};BufferList.prototype._write=function _write(buf,encoding,callback){this._appendBuffer(buf);if(typeof callback=="function")callback()};BufferList.prototype._read=function _read(size){if(!this.length)return this.push(null);size=Math.min(size,this.length);this.push(this.slice(0,size));this.consume(size)};BufferList.prototype.end=function end(chunk){DuplexStream.prototype.end.call(this,chunk);if(this._callback){this._callback(null,this.slice());this._callback=null}};BufferList.prototype.get=function get(index){return this.slice(index,index+1)[0]};BufferList.prototype.slice=function slice(start,end){if(typeof start=="number"&&start<0)start+=this.length;if(typeof end=="number"&&end<0)end+=this.length;return this.copy(null,0,start,end)};BufferList.prototype.copy=function copy(dst,dstStart,srcStart,srcEnd){if(typeof srcStart!="number"||srcStart<0)srcStart=0;if(typeof srcEnd!="number"||srcEnd>this.length)srcEnd=this.length;if(srcStart>=this.length)return dst||new Buffer(0);if(srcEnd<=0)return dst||new Buffer(0);var copy=!!dst,off=this._offset(srcStart),len=srcEnd-srcStart,bytes=len,bufoff=copy&&dstStart||0,start=off[1],l,i;if(srcStart===0&&srcEnd==this.length){if(!copy){return this._bufs.length===1?this._bufs[0]:Buffer.concat(this._bufs,this.length)}for(i=0;i<this._bufs.length;i++){this._bufs[i].copy(dst,bufoff);bufoff+=this._bufs[i].length}return dst}if(bytes<=this._bufs[off[0]].length-start){return copy?this._bufs[off[0]].copy(dst,dstStart,start,start+bytes):this._bufs[off[0]].slice(start,start+bytes)}if(!copy)dst=new Buffer(len);for(i=off[0];i<this._bufs.length;i++){l=this._bufs[i].length-start;if(bytes>l){this._bufs[i].copy(dst,bufoff,start)}else{this._bufs[i].copy(dst,bufoff,start,start+bytes);break}bufoff+=l;bytes-=l;if(start)start=0}return dst};BufferList.prototype.shallowSlice=function shallowSlice(start,end){start=start||0;end=end||this.length;if(start<0)start+=this.length;if(end<0)end+=this.length;var startOffset=this._offset(start),endOffset=this._offset(end),buffers=this._bufs.slice(startOffset[0],endOffset[0]+1);if(endOffset[1]==0)buffers.pop();else buffers[buffers.length-1]=buffers[buffers.length-1].slice(0,endOffset[1]);if(startOffset[1]!=0)buffers[0]=buffers[0].slice(startOffset[1]);return new BufferList(buffers)};BufferList.prototype.toString=function toString(encoding,start,end){return this.slice(start,end).toString(encoding)};BufferList.prototype.consume=function consume(bytes){while(this._bufs.length){if(bytes>=this._bufs[0].length){bytes-=this._bufs[0].length;this.length-=this._bufs[0].length;this._bufs.shift()}else{this._bufs[0]=this._bufs[0].slice(bytes);this.length-=bytes;break}}return this};BufferList.prototype.duplicate=function duplicate(){var i=0,copy=new BufferList;for(;i<this._bufs.length;i++)copy.append(this._bufs[i]);return copy};BufferList.prototype.destroy=function destroy(){this._bufs.length=0;this.length=0;this.push(null)};(function(){var methods={readDoubleBE:8,readDoubleLE:8,readFloatBE:4,readFloatLE:4,readInt32BE:4,readInt32LE:4,readUInt32BE:4,readUInt32LE:4,readInt16BE:2,readInt16LE:2,readUInt16BE:2,readUInt16LE:2,readInt8:1,readUInt8:1};for(var m in methods){(function(m){BufferList.prototype[m]=function(offset){return this.slice(offset,offset+methods[m])[m](0)}})(m)}})();module.exports=BufferList}).call(this,require("buffer").Buffer)},{buffer:12,"readable-stream/duplex":35,util:54}],11:[function(require,module,exports){},{}],12:[function(require,module,exports){"use strict";var base64=require("base64-js");var ieee754=require("ieee754");exports.Buffer=Buffer;exports.SlowBuffer=SlowBuffer;exports.INSPECT_MAX_BYTES=50;var K_MAX_LENGTH=2147483647;exports.kMaxLength=K_MAX_LENGTH;Buffer.TYPED_ARRAY_SUPPORT=typedArraySupport();if(!Buffer.TYPED_ARRAY_SUPPORT&&typeof console!=="undefined"&&typeof console.error==="function"){console.error("This browser lacks typed array (Uint8Array) support which is required by "+"`buffer` v5.x. Use `buffer` v4.x if you require old browser support.")}function typedArraySupport(){try{var arr=new Uint8Array(1);arr.__proto__={__proto__:Uint8Array.prototype,foo:function(){return 42}};return arr.foo()===42}catch(e){return false}}function createBuffer(length){if(length>K_MAX_LENGTH){throw new RangeError("Invalid typed array length")}var buf=new Uint8Array(length);buf.__proto__=Buffer.prototype;return buf}function Buffer(arg,encodingOrOffset,length){if(typeof arg==="number"){if(typeof encodingOrOffset==="string"){throw new Error("If encoding is specified then the first argument must be a string")}return allocUnsafe(arg)}return from(arg,encodingOrOffset,length)}if(typeof Symbol!=="undefined"&&Symbol.species&&Buffer[Symbol.species]===Buffer){Object.defineProperty(Buffer,Symbol.species,{value:null,configurable:true,enumerable:false,writable:false})}Buffer.poolSize=8192;function from(value,encodingOrOffset,length){if(typeof value==="number"){throw new TypeError('"value" argument must not be a number')}if(isArrayBuffer(value)){return fromArrayBuffer(value,encodingOrOffset,length)}if(typeof value==="string"){return fromString(value,encodingOrOffset)}return fromObject(value)}Buffer.from=function(value,encodingOrOffset,length){return from(value,encodingOrOffset,length)};Buffer.prototype.__proto__=Uint8Array.prototype;Buffer.__proto__=Uint8Array;function assertSize(size){if(typeof size!=="number"){throw new TypeError('"size" argument must be a number')}else if(size<0){throw new RangeError('"size" argument must not be negative')}}function alloc(size,fill,encoding){assertSize(size);if(size<=0){return createBuffer(size)}if(fill!==undefined){return typeof encoding==="string"?createBuffer(size).fill(fill,encoding):createBuffer(size).fill(fill)}return createBuffer(size)}Buffer.alloc=function(size,fill,encoding){return alloc(size,fill,encoding)};function allocUnsafe(size){assertSize(size);return createBuffer(size<0?0:checked(size)|0)}Buffer.allocUnsafe=function(size){return allocUnsafe(size)};Buffer.allocUnsafeSlow=function(size){return allocUnsafe(size)};function fromString(string,encoding){if(typeof encoding!=="string"||encoding===""){encoding="utf8"}if(!Buffer.isEncoding(encoding)){throw new TypeError('"encoding" must be a valid string encoding')}var length=byteLength(string,encoding)|0;var buf=createBuffer(length);var actual=buf.write(string,encoding);if(actual!==length){buf=buf.slice(0,actual)}return buf}function fromArrayLike(array){var length=array.length<0?0:checked(array.length)|0;var buf=createBuffer(length);for(var i=0;i<length;i+=1){buf[i]=array[i]&255}return buf}function fromArrayBuffer(array,byteOffset,length){if(byteOffset<0||array.byteLength<byteOffset){throw new RangeError("'offset' is out of bounds")}if(array.byteLength<byteOffset+(length||0)){throw new RangeError("'length' is out of bounds")}var buf;if(byteOffset===undefined&&length===undefined){buf=new Uint8Array(array)}else if(length===undefined){buf=new Uint8Array(array,byteOffset)}else{buf=new Uint8Array(array,byteOffset,length)}buf.__proto__=Buffer.prototype;return buf}function fromObject(obj){if(Buffer.isBuffer(obj)){var len=checked(obj.length)|0;var buf=createBuffer(len);if(buf.length===0){return buf}obj.copy(buf,0,0,len);return buf}if(obj){if(isArrayBufferView(obj)||"length"in obj){if(typeof obj.length!=="number"||numberIsNaN(obj.length)){return createBuffer(0)}return fromArrayLike(obj)}if(obj.type==="Buffer"&&Array.isArray(obj.data)){return fromArrayLike(obj.data)}}throw new TypeError("First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.")}function checked(length){if(length>=K_MAX_LENGTH){throw new RangeError("Attempt to allocate Buffer larger than maximum "+"size: 0x"+K_MAX_LENGTH.toString(16)+" bytes")}return length|0}function SlowBuffer(length){if(+length!=length){length=0}return Buffer.alloc(+length)}Buffer.isBuffer=function isBuffer(b){return b!=null&&b._isBuffer===true};Buffer.compare=function compare(a,b){if(!Buffer.isBuffer(a)||!Buffer.isBuffer(b)){throw new TypeError("Arguments must be Buffers")}if(a===b)return 0;var x=a.length;var y=b.length;for(var i=0,len=Math.min(x,y);i<len;++i){if(a[i]!==b[i]){x=a[i];y=b[i];break}}if(x<y)return-1;if(y<x)return 1;return 0};Buffer.isEncoding=function isEncoding(encoding){switch(String(encoding).toLowerCase()){case"hex":case"utf8":case"utf-8":case"ascii":case"latin1":case"binary":case"base64":case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return true;default:return false}};Buffer.concat=function concat(list,length){if(!Array.isArray(list)){throw new TypeError('"list" argument must be an Array of Buffers')}if(list.length===0){return Buffer.alloc(0)}var i;if(length===undefined){length=0;for(i=0;i<list.length;++i){length+=list[i].length}}var buffer=Buffer.allocUnsafe(length);var pos=0;for(i=0;i<list.length;++i){var buf=list[i];if(!Buffer.isBuffer(buf)){throw new TypeError('"list" argument must be an Array of Buffers')}buf.copy(buffer,pos);pos+=buf.length}return buffer};function byteLength(string,encoding){if(Buffer.isBuffer(string)){return string.length}if(isArrayBufferView(string)||isArrayBuffer(string)){return string.byteLength}if(typeof string!=="string"){string=""+string}var len=string.length;if(len===0)return 0;var loweredCase=false;for(;;){switch(encoding){case"ascii":case"latin1":case"binary":return len;case"utf8":case"utf-8":case undefined:return utf8ToBytes(string).length;case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return len*2;case"hex":return len>>>1;case"base64":return base64ToBytes(string).length;default:if(loweredCase)return utf8ToBytes(string).length;encoding=(""+encoding).toLowerCase();loweredCase=true}}}Buffer.byteLength=byteLength;function slowToString(encoding,start,end){var loweredCase=false;if(start===undefined||start<0){start=0}if(start>this.length){return""}if(end===undefined||end>this.length){end=this.length}if(end<=0){return""}end>>>=0;start>>>=0;if(end<=start){return""}if(!encoding)encoding="utf8";while(true){switch(encoding){case"hex":return hexSlice(this,start,end);case"utf8":case"utf-8":return utf8Slice(this,start,end);case"ascii":return asciiSlice(this,start,end);case"latin1":case"binary":return latin1Slice(this,start,end);case"base64":return base64Slice(this,start,end);case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return utf16leSlice(this,start,end);default:if(loweredCase)throw new TypeError("Unknown encoding: "+encoding);encoding=(encoding+"").toLowerCase();loweredCase=true}}}Buffer.prototype._isBuffer=true;function swap(b,n,m){var i=b[n];b[n]=b[m];b[m]=i}Buffer.prototype.swap16=function swap16(){var len=this.length;if(len%2!==0){throw new RangeError("Buffer size must be a multiple of 16-bits")}for(var i=0;i<len;i+=2){swap(this,i,i+1)}return this};Buffer.prototype.swap32=function swap32(){var len=this.length;if(len%4!==0){throw new RangeError("Buffer size must be a multiple of 32-bits")}for(var i=0;i<len;i+=4){swap(this,i,i+3);swap(this,i+1,i+2)}return this};Buffer.prototype.swap64=function swap64(){var len=this.length;if(len%8!==0){throw new RangeError("Buffer size must be a multiple of 64-bits")}for(var i=0;i<len;i+=8){swap(this,i,i+7);swap(this,i+1,i+6);swap(this,i+2,i+5);swap(this,i+3,i+4)}return this};Buffer.prototype.toString=function toString(){var length=this.length;if(length===0)return"";if(arguments.length===0)return utf8Slice(this,0,length);return slowToString.apply(this,arguments)};Buffer.prototype.equals=function equals(b){if(!Buffer.isBuffer(b))throw new TypeError("Argument must be a Buffer");if(this===b)return true;return Buffer.compare(this,b)===0};Buffer.prototype.inspect=function inspect(){var str="";var max=exports.INSPECT_MAX_BYTES;if(this.length>0){str=this.toString("hex",0,max).match(/.{2}/g).join(" ");if(this.length>max)str+=" ... "}return"<Buffer "+str+">"};Buffer.prototype.compare=function compare(target,start,end,thisStart,thisEnd){if(!Buffer.isBuffer(target)){throw new TypeError("Argument must be a Buffer")}if(start===undefined){start=0}if(end===undefined){end=target?target.length:0}if(thisStart===undefined){thisStart=0}if(thisEnd===undefined){thisEnd=this.length}if(start<0||end>target.length||thisStart<0||thisEnd>this.length){throw new RangeError("out of range index")}if(thisStart>=thisEnd&&start>=end){return 0}if(thisStart>=thisEnd){return-1}if(start>=end){return 1}start>>>=0;end>>>=0;thisStart>>>=0;thisEnd>>>=0;if(this===target)return 0;var x=thisEnd-thisStart;var y=end-start;var len=Math.min(x,y);var thisCopy=this.slice(thisStart,thisEnd);var targetCopy=target.slice(start,end);for(var i=0;i<len;++i){if(thisCopy[i]!==targetCopy[i]){x=thisCopy[i];y=targetCopy[i];break}}if(x<y)return-1;if(y<x)return 1;return 0};function bidirectionalIndexOf(buffer,val,byteOffset,encoding,dir){if(buffer.length===0)return-1;if(typeof byteOffset==="string"){encoding=byteOffset;byteOffset=0}else if(byteOffset>2147483647){byteOffset=2147483647}else if(byteOffset<-2147483648){byteOffset=-2147483648}byteOffset=+byteOffset;if(numberIsNaN(byteOffset)){byteOffset=dir?0:buffer.length-1}if(byteOffset<0)byteOffset=buffer.length+byteOffset;if(byteOffset>=buffer.length){if(dir)return-1;else byteOffset=buffer.length-1}else if(byteOffset<0){if(dir)byteOffset=0;else return-1}if(typeof val==="string"){val=Buffer.from(val,encoding)}if(Buffer.isBuffer(val)){if(val.length===0){return-1}return arrayIndexOf(buffer,val,byteOffset,encoding,dir)}else if(typeof val==="number"){val=val&255;if(typeof Uint8Array.prototype.indexOf==="function"){if(dir){return Uint8Array.prototype.indexOf.call(buffer,val,byteOffset)}else{return Uint8Array.prototype.lastIndexOf.call(buffer,val,byteOffset)}}return arrayIndexOf(buffer,[val],byteOffset,encoding,dir)}throw new TypeError("val must be string, number or Buffer")}function arrayIndexOf(arr,val,byteOffset,encoding,dir){var indexSize=1;var arrLength=arr.length;var valLength=val.length;if(encoding!==undefined){encoding=String(encoding).toLowerCase();if(encoding==="ucs2"||encoding==="ucs-2"||encoding==="utf16le"||encoding==="utf-16le"){if(arr.length<2||val.length<2){return-1}indexSize=2;arrLength/=2;valLength/=2;byteOffset/=2}}function read(buf,i){if(indexSize===1){return buf[i]}else{return buf.readUInt16BE(i*indexSize)}}var i;if(dir){var foundIndex=-1;for(i=byteOffset;i<arrLength;i++){if(read(arr,i)===read(val,foundIndex===-1?0:i-foundIndex)){if(foundIndex===-1)foundIndex=i;if(i-foundIndex+1===valLength)return foundIndex*indexSize}else{if(foundIndex!==-1)i-=i-foundIndex;foundIndex=-1}}}else{if(byteOffset+valLength>arrLength)byteOffset=arrLength-valLength;for(i=byteOffset;i>=0;i--){var found=true;for(var j=0;j<valLength;j++){if(read(arr,i+j)!==read(val,j)){found=false;break}}if(found)return i}}return-1}Buffer.prototype.includes=function includes(val,byteOffset,encoding){return this.indexOf(val,byteOffset,encoding)!==-1};Buffer.prototype.indexOf=function indexOf(val,byteOffset,encoding){return bidirectionalIndexOf(this,val,byteOffset,encoding,true)};Buffer.prototype.lastIndexOf=function lastIndexOf(val,byteOffset,encoding){return bidirectionalIndexOf(this,val,byteOffset,encoding,false)};function hexWrite(buf,string,offset,length){offset=Number(offset)||0;var remaining=buf.length-offset;if(!length){length=remaining}else{length=Number(length);if(length>remaining){length=remaining}}var strLen=string.length;if(strLen%2!==0)throw new TypeError("Invalid hex string");if(length>strLen/2){length=strLen/2}for(var i=0;i<length;++i){var parsed=parseInt(string.substr(i*2,2),16);if(numberIsNaN(parsed))return i;buf[offset+i]=parsed}return i}function utf8Write(buf,string,offset,length){return blitBuffer(utf8ToBytes(string,buf.length-offset),buf,offset,length)}function asciiWrite(buf,string,offset,length){return blitBuffer(asciiToBytes(string),buf,offset,length)}function latin1Write(buf,string,offset,length){return asciiWrite(buf,string,offset,length)}function base64Write(buf,string,offset,length){return blitBuffer(base64ToBytes(string),buf,offset,length)}function ucs2Write(buf,string,offset,length){return blitBuffer(utf16leToBytes(string,buf.length-offset),buf,offset,length)}Buffer.prototype.write=function write(string,offset,length,encoding){if(offset===undefined){encoding="utf8";length=this.length;offset=0}else if(length===undefined&&typeof offset==="string"){encoding=offset;length=this.length;offset=0}else if(isFinite(offset)){offset=offset>>>0;if(isFinite(length)){length=length>>>0;if(encoding===undefined)encoding="utf8"}else{encoding=length;length=undefined}}else{throw new Error("Buffer.write(string, encoding, offset[, length]) is no longer supported")}var remaining=this.length-offset;if(length===undefined||length>remaining)length=remaining;if(string.length>0&&(length<0||offset<0)||offset>this.length){throw new RangeError("Attempt to write outside buffer bounds")}if(!encoding)encoding="utf8";var loweredCase=false;for(;;){switch(encoding){case"hex":return hexWrite(this,string,offset,length);case"utf8":case"utf-8":return utf8Write(this,string,offset,length);case"ascii":return asciiWrite(this,string,offset,length);case"latin1":case"binary":return latin1Write(this,string,offset,length);case"base64":return base64Write(this,string,offset,length);case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return ucs2Write(this,string,offset,length);default:if(loweredCase)throw new TypeError("Unknown encoding: "+encoding);encoding=(""+encoding).toLowerCase();loweredCase=true}}};Buffer.prototype.toJSON=function toJSON(){return{type:"Buffer",data:Array.prototype.slice.call(this._arr||this,0)}};function base64Slice(buf,start,end){if(start===0&&end===buf.length){return base64.fromByteArray(buf)}else{return base64.fromByteArray(buf.slice(start,end))}}function utf8Slice(buf,start,end){end=Math.min(buf.length,end);var res=[];var i=start;while(i<end){var firstByte=buf[i];var codePoint=null;var bytesPerSequence=firstByte>239?4:firstByte>223?3:firstByte>191?2:1;if(i+bytesPerSequence<=end){var secondByte,thirdByte,fourthByte,tempCodePoint;switch(bytesPerSequence){case 1:if(firstByte<128){codePoint=firstByte}break;case 2:secondByte=buf[i+1];if((secondByte&192)===128){tempCodePoint=(firstByte&31)<<6|secondByte&63;if(tempCodePoint>127){codePoint=tempCodePoint}}break;case 3:secondByte=buf[i+1];thirdByte=buf[i+2];if((secondByte&192)===128&&(thirdByte&192)===128){tempCodePoint=(firstByte&15)<<12|(secondByte&63)<<6|thirdByte&63;if(tempCodePoint>2047&&(tempCodePoint<55296||tempCodePoint>57343)){codePoint=tempCodePoint}}break;case 4:secondByte=buf[i+1];thirdByte=buf[i+2];fourthByte=buf[i+3];if((secondByte&192)===128&&(thirdByte&192)===128&&(fourthByte&192)===128){tempCodePoint=(firstByte&15)<<18|(secondByte&63)<<12|(thirdByte&63)<<6|fourthByte&63;if(tempCodePoint>65535&&tempCodePoint<1114112){codePoint=tempCodePoint}}}}if(codePoint===null){codePoint=65533;bytesPerSequence=1}else if(codePoint>65535){codePoint-=65536;res.push(codePoint>>>10&1023|55296);codePoint=56320|codePoint&1023}res.push(codePoint);i+=bytesPerSequence}return decodeCodePointsArray(res)}var MAX_ARGUMENTS_LENGTH=4096;function decodeCodePointsArray(codePoints){var len=codePoints.length;if(len<=MAX_ARGUMENTS_LENGTH){return String.fromCharCode.apply(String,codePoints)}var res="";var i=0;while(i<len){res+=String.fromCharCode.apply(String,codePoints.slice(i,i+=MAX_ARGUMENTS_LENGTH))}return res}function asciiSlice(buf,start,end){var ret="";end=Math.min(buf.length,end);for(var i=start;i<end;++i){ret+=String.fromCharCode(buf[i]&127)}return ret}function latin1Slice(buf,start,end){var ret="";end=Math.min(buf.length,end);for(var i=start;i<end;++i){ret+=String.fromCharCode(buf[i])}return ret}function hexSlice(buf,start,end){var len=buf.length;if(!start||start<0)start=0;if(!end||end<0||end>len)end=len;var out="";for(var i=start;i<end;++i){out+=toHex(buf[i])}return out}function utf16leSlice(buf,start,end){var bytes=buf.slice(start,end);var res="";for(var i=0;i<bytes.length;i+=2){res+=String.fromCharCode(bytes[i]+bytes[i+1]*256)}return res}Buffer.prototype.slice=function slice(start,end){var len=this.length;start=~~start;end=end===undefined?len:~~end;if(start<0){start+=len;if(start<0)start=0}else if(start>len){start=len}if(end<0){end+=len;if(end<0)end=0}else if(end>len){end=len}if(end<start)end=start;var newBuf=this.subarray(start,end);newBuf.__proto__=Buffer.prototype;return newBuf};function checkOffset(offset,ext,length){if(offset%1!==0||offset<0)throw new RangeError("offset is not uint");if(offset+ext>length)throw new RangeError("Trying to access beyond buffer length")}Buffer.prototype.readUIntLE=function readUIntLE(offset,byteLength,noAssert){offset=offset>>>0;byteLength=byteLength>>>0;if(!noAssert)checkOffset(offset,byteLength,this.length);var val=this[offset];var mul=1;var i=0;while(++i<byteLength&&(mul*=256)){val+=this[offset+i]*mul}return val};Buffer.prototype.readUIntBE=function readUIntBE(offset,byteLength,noAssert){offset=offset>>>0;byteLength=byteLength>>>0;if(!noAssert){checkOffset(offset,byteLength,this.length)}var val=this[offset+--byteLength];var mul=1;while(byteLength>0&&(mul*=256)){val+=this[offset+--byteLength]*mul}return val};Buffer.prototype.readUInt8=function readUInt8(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,1,this.length);return this[offset]};Buffer.prototype.readUInt16LE=function readUInt16LE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,2,this.length);return this[offset]|this[offset+1]<<8};Buffer.prototype.readUInt16BE=function readUInt16BE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,2,this.length);return this[offset]<<8|this[offset+1]};Buffer.prototype.readUInt32LE=function readUInt32LE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return(this[offset]|this[offset+1]<<8|this[offset+2]<<16)+this[offset+3]*16777216};Buffer.prototype.readUInt32BE=function readUInt32BE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return this[offset]*16777216+(this[offset+1]<<16|this[offset+2]<<8|this[offset+3])};Buffer.prototype.readIntLE=function readIntLE(offset,byteLength,noAssert){offset=offset>>>0;byteLength=byteLength>>>0;if(!noAssert)checkOffset(offset,byteLength,this.length);var val=this[offset];var mul=1;var i=0;while(++i<byteLength&&(mul*=256)){val+=this[offset+i]*mul}mul*=128;if(val>=mul)val-=Math.pow(2,8*byteLength);return val};Buffer.prototype.readIntBE=function readIntBE(offset,byteLength,noAssert){offset=offset>>>0;byteLength=byteLength>>>0;if(!noAssert)checkOffset(offset,byteLength,this.length);var i=byteLength;var mul=1;var val=this[offset+--i];while(i>0&&(mul*=256)){val+=this[offset+--i]*mul}mul*=128;if(val>=mul)val-=Math.pow(2,8*byteLength);return val};Buffer.prototype.readInt8=function readInt8(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,1,this.length);if(!(this[offset]&128))return this[offset];return(255-this[offset]+1)*-1};Buffer.prototype.readInt16LE=function readInt16LE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,2,this.length);var val=this[offset]|this[offset+1]<<8;return val&32768?val|4294901760:val};Buffer.prototype.readInt16BE=function readInt16BE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,2,this.length);var val=this[offset+1]|this[offset]<<8;return val&32768?val|4294901760:val};Buffer.prototype.readInt32LE=function readInt32LE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return this[offset]|this[offset+1]<<8|this[offset+2]<<16|this[offset+3]<<24};Buffer.prototype.readInt32BE=function readInt32BE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return this[offset]<<24|this[offset+1]<<16|this[offset+2]<<8|this[offset+3]};Buffer.prototype.readFloatLE=function readFloatLE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return ieee754.read(this,offset,true,23,4)};Buffer.prototype.readFloatBE=function readFloatBE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return ieee754.read(this,offset,false,23,4)};Buffer.prototype.readDoubleLE=function readDoubleLE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,8,this.length);return ieee754.read(this,offset,true,52,8)};Buffer.prototype.readDoubleBE=function readDoubleBE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,8,this.length);return ieee754.read(this,offset,false,52,8)};function checkInt(buf,value,offset,ext,max,min){if(!Buffer.isBuffer(buf))throw new TypeError('"buffer" argument must be a Buffer instance');if(value>max||value<min)throw new RangeError('"value" argument is out of bounds');if(offset+ext>buf.length)throw new RangeError("Index out of range")}Buffer.prototype.writeUIntLE=function writeUIntLE(value,offset,byteLength,noAssert){value=+value;offset=offset>>>0;byteLength=byteLength>>>0;if(!noAssert){var maxBytes=Math.pow(2,8*byteLength)-1;checkInt(this,value,offset,byteLength,maxBytes,0)}var mul=1;var i=0;this[offset]=value&255;while(++i<byteLength&&(mul*=256)){this[offset+i]=value/mul&255}return offset+byteLength};Buffer.prototype.writeUIntBE=function writeUIntBE(value,offset,byteLength,noAssert){value=+value;offset=offset>>>0;byteLength=byteLength>>>0;if(!noAssert){var maxBytes=Math.pow(2,8*byteLength)-1;checkInt(this,value,offset,byteLength,maxBytes,0)}var i=byteLength-1;var mul=1;this[offset+i]=value&255;while(--i>=0&&(mul*=256)){this[offset+i]=value/mul&255}return offset+byteLength};Buffer.prototype.writeUInt8=function writeUInt8(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,1,255,0);this[offset]=value&255;return offset+1};Buffer.prototype.writeUInt16LE=function writeUInt16LE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,2,65535,0);this[offset]=value&255;this[offset+1]=value>>>8;return offset+2};Buffer.prototype.writeUInt16BE=function writeUInt16BE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,2,65535,0);this[offset]=value>>>8;this[offset+1]=value&255;return offset+2};Buffer.prototype.writeUInt32LE=function writeUInt32LE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,4,4294967295,0);this[offset+3]=value>>>24;this[offset+2]=value>>>16;this[offset+1]=value>>>8;this[offset]=value&255;return offset+4};Buffer.prototype.writeUInt32BE=function writeUInt32BE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,4,4294967295,0);this[offset]=value>>>24;this[offset+1]=value>>>16;this[offset+2]=value>>>8;this[offset+3]=value&255;return offset+4};Buffer.prototype.writeIntLE=function writeIntLE(value,offset,byteLength,noAssert){value=+value;offset=offset>>>0;if(!noAssert){var limit=Math.pow(2,8*byteLength-1);checkInt(this,value,offset,byteLength,limit-1,-limit)}var i=0;var mul=1;var sub=0;this[offset]=value&255;while(++i<byteLength&&(mul*=256)){if(value<0&&sub===0&&this[offset+i-1]!==0){sub=1}this[offset+i]=(value/mul>>0)-sub&255}return offset+byteLength};Buffer.prototype.writeIntBE=function writeIntBE(value,offset,byteLength,noAssert){value=+value;offset=offset>>>0;if(!noAssert){var limit=Math.pow(2,8*byteLength-1);checkInt(this,value,offset,byteLength,limit-1,-limit)}var i=byteLength-1;var mul=1;var sub=0;this[offset+i]=value&255;while(--i>=0&&(mul*=256)){if(value<0&&sub===0&&this[offset+i+1]!==0){sub=1}this[offset+i]=(value/mul>>0)-sub&255}return offset+byteLength};Buffer.prototype.writeInt8=function writeInt8(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,1,127,-128);if(value<0)value=255+value+1;this[offset]=value&255;return offset+1};Buffer.prototype.writeInt16LE=function writeInt16LE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,2,32767,-32768);this[offset]=value&255;this[offset+1]=value>>>8;return offset+2};Buffer.prototype.writeInt16BE=function writeInt16BE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,2,32767,-32768);this[offset]=value>>>8;this[offset+1]=value&255;return offset+2};Buffer.prototype.writeInt32LE=function writeInt32LE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,4,2147483647,-2147483648);this[offset]=value&255;this[offset+1]=value>>>8;this[offset+2]=value>>>16;this[offset+3]=value>>>24;return offset+4};Buffer.prototype.writeInt32BE=function writeInt32BE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,4,2147483647,-2147483648);if(value<0)value=4294967295+value+1;this[offset]=value>>>24;this[offset+1]=value>>>16;this[offset+2]=value>>>8;this[offset+3]=value&255;return offset+4};function checkIEEE754(buf,value,offset,ext,max,min){if(offset+ext>buf.length)throw new RangeError("Index out of range");if(offset<0)throw new RangeError("Index out of range")}function writeFloat(buf,value,offset,littleEndian,noAssert){value=+value;offset=offset>>>0;if(!noAssert){checkIEEE754(buf,value,offset,4,3.4028234663852886e38,-3.4028234663852886e38)}ieee754.write(buf,value,offset,littleEndian,23,4);return offset+4}Buffer.prototype.writeFloatLE=function writeFloatLE(value,offset,noAssert){return writeFloat(this,value,offset,true,noAssert)};Buffer.prototype.writeFloatBE=function writeFloatBE(value,offset,noAssert){return writeFloat(this,value,offset,false,noAssert)};function writeDouble(buf,value,offset,littleEndian,noAssert){value=+value;offset=offset>>>0;if(!noAssert){checkIEEE754(buf,value,offset,8,1.7976931348623157e308,-1.7976931348623157e308)}ieee754.write(buf,value,offset,littleEndian,52,8);return offset+8}Buffer.prototype.writeDoubleLE=function writeDoubleLE(value,offset,noAssert){return writeDouble(this,value,offset,true,noAssert)};Buffer.prototype.writeDoubleBE=function writeDoubleBE(value,offset,noAssert){return writeDouble(this,value,offset,false,noAssert)};Buffer.prototype.copy=function copy(target,targetStart,start,end){if(!start)start=0;if(!end&&end!==0)end=this.length;if(targetStart>=target.length)targetStart=target.length;if(!targetStart)targetStart=0;if(end>0&&end<start)end=start;if(end===start)return 0;if(target.length===0||this.length===0)return 0;if(targetStart<0){throw new RangeError("targetStart out of bounds")}if(start<0||start>=this.length)throw new RangeError("sourceStart out of bounds");if(end<0)throw new RangeError("sourceEnd out of bounds");if(end>this.length)end=this.length;if(target.length-targetStart<end-start){end=target.length-targetStart+start}var len=end-start;var i;if(this===target&&start<targetStart&&targetStart<end){for(i=len-1;i>=0;--i){target[i+targetStart]=this[i+start]}}else if(len<1e3){for(i=0;i<len;++i){target[i+targetStart]=this[i+start]}}else{Uint8Array.prototype.set.call(target,this.subarray(start,start+len),targetStart)}return len};Buffer.prototype.fill=function fill(val,start,end,encoding){if(typeof val==="string"){if(typeof start==="string"){encoding=start;start=0;end=this.length}else if(typeof end==="string"){encoding=end;end=this.length}if(val.length===1){var code=val.charCodeAt(0);if(code<256){val=code}}if(encoding!==undefined&&typeof encoding!=="string"){throw new TypeError("encoding must be a string")}if(typeof encoding==="string"&&!Buffer.isEncoding(encoding)){throw new TypeError("Unknown encoding: "+encoding)}}else if(typeof val==="number"){val=val&255}if(start<0||this.length<start||this.length<end){throw new RangeError("Out of range index")}if(end<=start){return this}start=start>>>0;end=end===undefined?this.length:end>>>0;if(!val)val=0;var i;if(typeof val==="number"){for(i=start;i<end;++i){this[i]=val}}else{var bytes=Buffer.isBuffer(val)?val:new Buffer(val,encoding);var len=bytes.length;for(i=0;i<end-start;++i){this[i+start]=bytes[i%len]}}return this};var INVALID_BASE64_RE=/[^+/0-9A-Za-z-_]/g;function base64clean(str){str=str.trim().replace(INVALID_BASE64_RE,"");if(str.length<2)return"";while(str.length%4!==0){str=str+"="}return str}function toHex(n){if(n<16)return"0"+n.toString(16);return n.toString(16)}function utf8ToBytes(string,units){units=units||Infinity;var codePoint;var length=string.length;var leadSurrogate=null;var bytes=[];for(var i=0;i<length;++i){codePoint=string.charCodeAt(i);if(codePoint>55295&&codePoint<57344){if(!leadSurrogate){if(codePoint>56319){if((units-=3)>-1)bytes.push(239,191,189);continue}else if(i+1===length){if((units-=3)>-1)bytes.push(239,191,189);continue}leadSurrogate=codePoint;continue}if(codePoint<56320){if((units-=3)>-1)bytes.push(239,191,189);leadSurrogate=codePoint;continue}codePoint=(leadSurrogate-55296<<10|codePoint-56320)+65536}else if(leadSurrogate){if((units-=3)>-1)bytes.push(239,191,189)}leadSurrogate=null;if(codePoint<128){if((units-=1)<0)break;bytes.push(codePoint)}else if(codePoint<2048){if((units-=2)<0)break;bytes.push(codePoint>>6|192,codePoint&63|128)}else if(codePoint<65536){if((units-=3)<0)break;bytes.push(codePoint>>12|224,codePoint>>6&63|128,codePoint&63|128)}else if(codePoint<1114112){if((units-=4)<0)break;bytes.push(codePoint>>18|240,codePoint>>12&63|128,codePoint>>6&63|128,codePoint&63|128)}else{throw new Error("Invalid code point")}}return bytes}function asciiToBytes(str){var byteArray=[];for(var i=0;i<str.length;++i){byteArray.push(str.charCodeAt(i)&255)}return byteArray}function utf16leToBytes(str,units){var c,hi,lo;var byteArray=[];for(var i=0;i<str.length;++i){if((units-=2)<0)break;c=str.charCodeAt(i);hi=c>>8;lo=c%256;byteArray.push(lo);byteArray.push(hi)}return byteArray}function base64ToBytes(str){return base64.toByteArray(base64clean(str))}function blitBuffer(src,dst,offset,length){for(var i=0;i<length;++i){if(i+offset>=dst.length||i>=src.length)break;dst[i+offset]=src[i]}return i}function isArrayBuffer(obj){return obj instanceof ArrayBuffer||obj!=null&&obj.constructor!=null&&obj.constructor.name==="ArrayBuffer"&&typeof obj.byteLength==="number"}function isArrayBufferView(obj){return typeof ArrayBuffer.isView==="function"&&ArrayBuffer.isView(obj)}function numberIsNaN(obj){return obj!==obj}},{"base64-js":9,ieee754:17}],13:[function(require,module,exports){(function(Buffer){function isArray(arg){if(Array.isArray){return Array.isArray(arg)}return objectToString(arg)==="[object Array]"}exports.isArray=isArray;function isBoolean(arg){return typeof arg==="boolean"}exports.isBoolean=isBoolean;function isNull(arg){return arg===null}exports.isNull=isNull;function isNullOrUndefined(arg){return arg==null}exports.isNullOrUndefined=isNullOrUndefined;function isNumber(arg){return typeof arg==="number"}exports.isNumber=isNumber;function isString(arg){return typeof arg==="string"}exports.isString=isString;function isSymbol(arg){return typeof arg==="symbol"}exports.isSymbol=isSymbol;function isUndefined(arg){return arg===void 0}exports.isUndefined=isUndefined;function isRegExp(re){return objectToString(re)==="[object RegExp]"}exports.isRegExp=isRegExp;function isObject(arg){return typeof arg==="object"&&arg!==null}exports.isObject=isObject;function isDate(d){return objectToString(d)==="[object Date]"}exports.isDate=isDate;function isError(e){return objectToString(e)==="[object Error]"||e instanceof Error}exports.isError=isError;function isFunction(arg){return typeof arg==="function"}exports.isFunction=isFunction;function isPrimitive(arg){return arg===null||typeof arg==="boolean"||typeof arg==="number"||typeof arg==="string"||typeof arg==="symbol"||typeof arg==="undefined"}exports.isPrimitive=isPrimitive;exports.isBuffer=Buffer.isBuffer;function objectToString(o){return Object.prototype.toString.call(o)}}).call(this,{isBuffer:require("../../is-buffer/index.js")})},{"../../is-buffer/index.js":19}],14:[function(require,module,exports){(function(process,Buffer){var stream=require("readable-stream");var eos=require("end-of-stream");var inherits=require("inherits");var shift=require("stream-shift");var SIGNAL_FLUSH=new Buffer([0]);var onuncork=function(self,fn){if(self._corked)self.once("uncork",fn);else fn()};var destroyer=function(self,end){return function(err){if(err)self.destroy(err.message==="premature close"?null:err);else if(end&&!self._ended)self.end()}};var end=function(ws,fn){if(!ws)return fn();if(ws._writableState&&ws._writableState.finished)return fn();if(ws._writableState)return ws.end(fn);ws.end();fn()};var toStreams2=function(rs){return new stream.Readable({objectMode:true,highWaterMark:16}).wrap(rs)};var Duplexify=function(writable,readable,opts){if(!(this instanceof Duplexify))return new Duplexify(writable,readable,opts);stream.Duplex.call(this,opts);this._writable=null;this._readable=null;this._readable2=null;this._forwardDestroy=!opts||opts.destroy!==false;this._forwardEnd=!opts||opts.end!==false;this._corked=1;this._ondrain=null;this._drained=false;this._forwarding=false;this._unwrite=null;this._unread=null;this._ended=false;this.destroyed=false;if(writable)this.setWritable(writable);if(readable)this.setReadable(readable)};inherits(Duplexify,stream.Duplex);Duplexify.obj=function(writable,readable,opts){if(!opts)opts={};opts.objectMode=true;opts.highWaterMark=16;return new Duplexify(writable,readable,opts)};Duplexify.prototype.cork=function(){if(++this._corked===1)this.emit("cork")};Duplexify.prototype.uncork=function(){if(this._corked&&--this._corked===0)this.emit("uncork")};Duplexify.prototype.setWritable=function(writable){if(this._unwrite)this._unwrite();if(this.destroyed){if(writable&&writable.destroy)writable.destroy();return}if(writable===null||writable===false){this.end();return}var self=this;var unend=eos(writable,{writable:true,readable:false},destroyer(this,this._forwardEnd));var ondrain=function(){var ondrain=self._ondrain;self._ondrain=null;if(ondrain)ondrain()};var clear=function(){self._writable.removeListener("drain",ondrain);unend()};if(this._unwrite)process.nextTick(ondrain);this._writable=writable;this._writable.on("drain",ondrain);this._unwrite=clear;this.uncork()};Duplexify.prototype.setReadable=function(readable){if(this._unread)this._unread();if(this.destroyed){if(readable&&readable.destroy)readable.destroy();return}if(readable===null||readable===false){this.push(null);this.resume();return}var self=this;var unend=eos(readable,{writable:false,readable:true},destroyer(this));var onreadable=function(){self._forward()};var onend=function(){self.push(null)};var clear=function(){self._readable2.removeListener("readable",onreadable);self._readable2.removeListener("end",onend);unend()};this._drained=true;this._readable=readable;this._readable2=readable._readableState?readable:toStreams2(readable);this._readable2.on("readable",onreadable);this._readable2.on("end",onend);this._unread=clear;this._forward()};Duplexify.prototype._read=function(){this._drained=true;this._forward()};Duplexify.prototype._forward=function(){if(this._forwarding||!this._readable2||!this._drained)return;this._forwarding=true;var data;while(this._drained&&(data=shift(this._readable2))!==null){if(this.destroyed)continue;this._drained=this.push(data)}this._forwarding=false};Duplexify.prototype.destroy=function(err){if(this.destroyed)return;this.destroyed=true;var self=this;process.nextTick(function(){self._destroy(err)})};Duplexify.prototype._destroy=function(err){if(err){var ondrain=this._ondrain;this._ondrain=null;if(ondrain)ondrain(err);else this.emit("error",err)}if(this._forwardDestroy){if(this._readable&&this._readable.destroy)this._readable.destroy();if(this._writable&&this._writable.destroy)this._writable.destroy()}this.emit("close")};Duplexify.prototype._write=function(data,enc,cb){if(this.destroyed)return cb();if(this._corked)return onuncork(this,this._write.bind(this,data,enc,cb));if(data===SIGNAL_FLUSH)return this._finish(cb);if(!this._writable)return cb();if(this._writable.write(data)===false)this._ondrain=cb;else cb()};Duplexify.prototype._finish=function(cb){var self=this;this.emit("preend");onuncork(this,function(){end(self._forwardEnd&&self._writable,function(){if(self._writableState.prefinished===false)self._writableState.prefinished=true;self.emit("prefinish");onuncork(self,cb)})})};Duplexify.prototype.end=function(data,enc,cb){if(typeof data==="function")return this.end(null,null,data);if(typeof enc==="function")return this.end(data,null,enc);this._ended=true;if(data)this.write(data);if(!this._writableState.ending)this.write(SIGNAL_FLUSH);return stream.Writable.prototype.end.call(this,cb)};module.exports=Duplexify}).call(this,require("_process"),require("buffer").Buffer)},{_process:30,buffer:12,"end-of-stream":15,inherits:18,"readable-stream":44,"stream-shift":47}],15:[function(require,module,exports){var once=require("once");var noop=function(){};var isRequest=function(stream){return stream.setHeader&&typeof stream.abort==="function"};var isChildProcess=function(stream){return stream.stdio&&Array.isArray(stream.stdio)&&stream.stdio.length===3};var eos=function(stream,opts,callback){if(typeof opts==="function")return eos(stream,null,opts);if(!opts)opts={};callback=once(callback||noop);var ws=stream._writableState;var rs=stream._readableState;var readable=opts.readable||opts.readable!==false&&stream.readable;var writable=opts.writable||opts.writable!==false&&stream.writable;var onlegacyfinish=function(){if(!stream.writable)onfinish()};var onfinish=function(){writable=false;if(!readable)callback.call(stream)};var onend=function(){readable=false;if(!writable)callback.call(stream)};var onexit=function(exitCode){callback.call(stream,exitCode?new Error("exited with error code: "+exitCode):null)};var onclose=function(){if(readable&&!(rs&&rs.ended))return callback.call(stream,new Error("premature close"));if(writable&&!(ws&&ws.ended))return callback.call(stream,new Error("premature close"))};var onrequest=function(){stream.req.on("finish",onfinish)};if(isRequest(stream)){stream.on("complete",onfinish);stream.on("abort",onclose);if(stream.req)onrequest();else stream.on("request",onrequest)}else if(writable&&!ws){stream.on("end",onlegacyfinish);stream.on("close",onlegacyfinish)}if(isChildProcess(stream))stream.on("exit",onexit);stream.on("end",onend);stream.on("finish",onfinish);if(opts.error!==false)stream.on("error",callback);stream.on("close",onclose);return function(){stream.removeListener("complete",onfinish);stream.removeListener("abort",onclose);stream.removeListener("request",onrequest);if(stream.req)stream.req.removeListener("finish",onfinish);stream.removeListener("end",onlegacyfinish);stream.removeListener("close",onlegacyfinish);stream.removeListener("finish",onfinish);stream.removeListener("exit",onexit);stream.removeListener("end",onend);stream.removeListener("error",callback);stream.removeListener("close",onclose)}};module.exports=eos},{once:28}],16:[function(require,module,exports){function EventEmitter(){this._events=this._events||{};this._maxListeners=this._maxListeners||undefined}module.exports=EventEmitter;EventEmitter.EventEmitter=EventEmitter;EventEmitter.prototype._events=undefined;EventEmitter.prototype._maxListeners=undefined;EventEmitter.defaultMaxListeners=10;EventEmitter.prototype.setMaxListeners=function(n){if(!isNumber(n)||n<0||isNaN(n))throw TypeError("n must be a positive number");this._maxListeners=n;return this};EventEmitter.prototype.emit=function(type){var er,handler,len,args,i,listeners;if(!this._events)this._events={};if(type==="error"){if(!this._events.error||isObject(this._events.error)&&!this._events.error.length){er=arguments[1];if(er instanceof Error){throw er}else{var err=new Error('Uncaught, unspecified "error" event. ('+er+")");err.context=er;throw err}}}handler=this._events[type];if(isUndefined(handler))return false;if(isFunction(handler)){switch(arguments.length){case 1:handler.call(this);break;case 2:handler.call(this,arguments[1]);break;case 3:handler.call(this,arguments[1],arguments[2]);break;default:args=Array.prototype.slice.call(arguments,1);handler.apply(this,args)}}else if(isObject(handler)){args=Array.prototype.slice.call(arguments,1);listeners=handler.slice();len=listeners.length;for(i=0;i<len;i++)listeners[i].apply(this,args)}return true};EventEmitter.prototype.addListener=function(type,listener){var m;if(!isFunction(listener))throw TypeError("listener must be a function");if(!this._events)this._events={};if(this._events.newListener)this.emit("newListener",type,isFunction(listener.listener)?listener.listener:listener);if(!this._events[type])this._events[type]=listener;else if(isObject(this._events[type]))this._events[type].push(listener);else this._events[type]=[this._events[type],listener];if(isObject(this._events[type])&&!this._events[type].warned){if(!isUndefined(this._maxListeners)){m=this._maxListeners}else{m=EventEmitter.defaultMaxListeners}if(m&&m>0&&this._events[type].length>m){this._events[type].warned=true;console.error("(node) warning: possible EventEmitter memory "+"leak detected. %d listeners added. "+"Use emitter.setMaxListeners() to increase limit.",this._events[type].length);if(typeof console.trace==="function"){console.trace()}}}return this};EventEmitter.prototype.on=EventEmitter.prototype.addListener;EventEmitter.prototype.once=function(type,listener){if(!isFunction(listener))throw TypeError("listener must be a function");var fired=false;function g(){this.removeListener(type,g);if(!fired){fired=true;listener.apply(this,arguments)}}g.listener=listener;this.on(type,g);return this};EventEmitter.prototype.removeListener=function(type,listener){var list,position,length,i;if(!isFunction(listener))throw TypeError("listener must be a function");if(!this._events||!this._events[type])return this;list=this._events[type];length=list.length;position=-1;if(list===listener||isFunction(list.listener)&&list.listener===listener){delete this._events[type];if(this._events.removeListener)this.emit("removeListener",type,listener)}else if(isObject(list)){for(i=length;i-- >0;){if(list[i]===listener||list[i].listener&&list[i].listener===listener){position=i;break}}if(position<0)return this;if(list.length===1){list.length=0;delete this._events[type]}else{list.splice(position,1)}if(this._events.removeListener)this.emit("removeListener",type,listener)}return this};EventEmitter.prototype.removeAllListeners=function(type){var key,listeners;if(!this._events)return this;if(!this._events.removeListener){if(arguments.length===0)this._events={};else if(this._events[type])delete this._events[type];return this}if(arguments.length===0){for(key in this._events){if(key==="removeListener")continue;this.removeAllListeners(key)}this.removeAllListeners("removeListener");this._events={};return this}listeners=this._events[type];if(isFunction(listeners)){this.removeListener(type,listeners)}else if(listeners){while(listeners.length)this.removeListener(type,listeners[listeners.length-1])}delete this._events[type];return this};EventEmitter.prototype.listeners=function(type){var ret;if(!this._events||!this._events[type])ret=[];else if(isFunction(this._events[type]))ret=[this._events[type]];else ret=this._events[type].slice();return ret};EventEmitter.prototype.listenerCount=function(type){if(this._events){var evlistener=this._events[type];if(isFunction(evlistener))return 1;else if(evlistener)return evlistener.length}return 0};EventEmitter.listenerCount=function(emitter,type){return emitter.listenerCount(type)};function isFunction(arg){return typeof arg==="function"}function isNumber(arg){return typeof arg==="number"}function isObject(arg){return typeof arg==="object"&&arg!==null}function isUndefined(arg){return arg===void 0}},{}],17:[function(require,module,exports){exports.read=function(buffer,offset,isLE,mLen,nBytes){var e,m;var eLen=nBytes*8-mLen-1;var eMax=(1<<eLen)-1;var eBias=eMax>>1;var nBits=-7;var i=isLE?nBytes-1:0;var d=isLE?-1:1;var s=buffer[offset+i];i+=d;e=s&(1<<-nBits)-1;s>>=-nBits;nBits+=eLen;for(;nBits>0;e=e*256+buffer[offset+i],i+=d,nBits-=8){}m=e&(1<<-nBits)-1;e>>=-nBits;nBits+=mLen;for(;nBits>0;m=m*256+buffer[offset+i],i+=d,nBits-=8){}if(e===0){e=1-eBias}else if(e===eMax){return m?NaN:(s?-1:1)*Infinity}else{m=m+Math.pow(2,mLen);e=e-eBias}return(s?-1:1)*m*Math.pow(2,e-mLen)};exports.write=function(buffer,value,offset,isLE,mLen,nBytes){var e,m,c;var eLen=nBytes*8-mLen-1;var eMax=(1<<eLen)-1;var eBias=eMax>>1;var rt=mLen===23?Math.pow(2,-24)-Math.pow(2,-77):0;var i=isLE?0:nBytes-1;var d=isLE?1:-1;var s=value<0||value===0&&1/value<0?1:0;value=Math.abs(value);if(isNaN(value)||value===Infinity){m=isNaN(value)?1:0;e=eMax}else{e=Math.floor(Math.log(value)/Math.LN2);if(value*(c=Math.pow(2,-e))<1){e--;c*=2}if(e+eBias>=1){value+=rt/c}else{value+=rt*Math.pow(2,1-eBias)}if(value*c>=2){e++;c/=2}if(e+eBias>=eMax){m=0;e=eMax}else if(e+eBias>=1){m=(value*c-1)*Math.pow(2,mLen);e=e+eBias}else{m=value*Math.pow(2,eBias-1)*Math.pow(2,mLen);e=0}}for(;mLen>=8;buffer[offset+i]=m&255,i+=d,m/=256,mLen-=8){}e=e<<mLen|m;eLen+=mLen;for(;eLen>0;buffer[offset+i]=e&255,i+=d,e/=256,eLen-=8){}buffer[offset+i-d]|=s*128}},{}],18:[function(require,module,exports){if(typeof Object.create==="function"){module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;ctor.prototype=Object.create(superCtor.prototype,{constructor:{value:ctor,enumerable:false,writable:true,configurable:true}})}}else{module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;var TempCtor=function(){};TempCtor.prototype=superCtor.prototype;ctor.prototype=new TempCtor;ctor.prototype.constructor=ctor}}},{}],19:[function(require,module,exports){module.exports=function(obj){return obj!=null&&(isBuffer(obj)||isSlowBuffer(obj)||!!obj._isBuffer)};function isBuffer(obj){return!!obj.constructor&&typeof obj.constructor.isBuffer==="function"&&obj.constructor.isBuffer(obj)}function isSlowBuffer(obj){return typeof obj.readFloatLE==="function"&&typeof obj.slice==="function"&&isBuffer(obj.slice(0,0))}},{}],20:[function(require,module,exports){var toString={}.toString;module.exports=Array.isArray||function(arr){return toString.call(arr)=="[object Array]"}},{}],21:[function(require,module,exports){"use strict";var Buffer=require("safe-buffer").Buffer;var protocol=module.exports;protocol.types={0:"reserved",1:"connect",2:"connack",3:"publish",4:"puback",5:"pubrec",6:"pubrel",7:"pubcomp",8:"subscribe",9:"suback",10:"unsubscribe",11:"unsuback",12:"pingreq",13:"pingresp",14:"disconnect",15:"reserved"};protocol.codes={};for(var k in protocol.types){var v=protocol.types[k];protocol.codes[v]=k}protocol.CMD_SHIFT=4;protocol.CMD_MASK=240;protocol.DUP_MASK=8;protocol.QOS_MASK=3;protocol.QOS_SHIFT=1;protocol.RETAIN_MASK=1;protocol.LENGTH_MASK=127;protocol.LENGTH_FIN_MASK=128;protocol.SESSIONPRESENT_MASK=1;protocol.SESSIONPRESENT_HEADER=Buffer.from([protocol.SESSIONPRESENT_MASK]);protocol.CONNACK_HEADER=Buffer.from([protocol.codes["connack"]<<protocol.CMD_SHIFT]);protocol.USERNAME_MASK=128;protocol.PASSWORD_MASK=64;protocol.WILL_RETAIN_MASK=32;protocol.WILL_QOS_MASK=24;protocol.WILL_QOS_SHIFT=3;protocol.WILL_FLAG_MASK=4;protocol.CLEAN_SESSION_MASK=2;protocol.CONNECT_HEADER=Buffer.from([protocol.codes["connect"]<<protocol.CMD_SHIFT]);function genHeader(type){return[0,1,2].map(function(qos){return[0,1].map(function(dup){return[0,1].map(function(retain){var buf=new Buffer(1);buf.writeUInt8(protocol.codes[type]<<protocol.CMD_SHIFT|(dup?protocol.DUP_MASK:0)|qos<<protocol.QOS_SHIFT|retain,0,true);return buf})})})}protocol.PUBLISH_HEADER=genHeader("publish");protocol.SUBSCRIBE_HEADER=genHeader("subscribe");protocol.UNSUBSCRIBE_HEADER=genHeader("unsubscribe");protocol.ACKS={unsuback:genHeader("unsuback"),puback:genHeader("puback"),pubcomp:genHeader("pubcomp"),pubrel:genHeader("pubrel"),pubrec:genHeader("pubrec")};protocol.SUBACK_HEADER=Buffer.from([protocol.codes["suback"]<<protocol.CMD_SHIFT]);protocol.VERSION3=Buffer.from([3]);protocol.VERSION4=Buffer.from([4]);protocol.QOS=[0,1,2].map(function(qos){return Buffer.from([qos])});protocol.EMPTY={pingreq:Buffer.from([protocol.codes["pingreq"]<<4,0]),pingresp:Buffer.from([protocol.codes["pingresp"]<<4,0]),disconnect:Buffer.from([protocol.codes["disconnect"]<<4,0])}},{"safe-buffer":46}],22:[function(require,module,exports){"use strict";var Buffer=require("safe-buffer").Buffer;var writeToStream=require("./writeToStream");var EE=require("events").EventEmitter;var inherits=require("inherits");function generate(packet){var stream=new Accumulator;writeToStream(packet,stream);return stream.concat()}function Accumulator(){this._array=new Array(20);this._i=0}inherits(Accumulator,EE);Accumulator.prototype.write=function(chunk){this._array[this._i++]=chunk;return true};Accumulator.prototype.concat=function(){var length=0;var lengths=new Array(this._array.length);var list=this._array;var pos=0;var i;var result;for(i=0;i<list.length&&list[i];i++){if(typeof list[i]!=="string")lengths[i]=list[i].length;else lengths[i]=Buffer.byteLength(list[i]);length+=lengths[i]}result=Buffer.allocUnsafe(length);for(i=0;i<list.length&&list[i];i++){if(typeof list[i]!=="string"){list[i].copy(result,pos);pos+=lengths[i]}else{result.write(list[i],pos);pos+=lengths[i]}}return result};module.exports=generate},{"./writeToStream":27,events:16,inherits:18,"safe-buffer":46}],23:[function(require,module,exports){"use strict";exports.parser=require("./parser");exports.generate=require("./generate");exports.writeToStream=require("./writeToStream")},{"./generate":22,"./parser":26,"./writeToStream":27}],24:[function(require,module,exports){"use strict";var Buffer=require("safe-buffer").Buffer;var max=65536;var cache={};function generateBuffer(i){var buffer=Buffer.allocUnsafe(2);buffer.writeUInt8(i>>8,0,true);buffer.writeUInt8(i&255,0+1,true);return buffer}function generateCache(){for(var i=0;i<max;i++){cache[i]=generateBuffer(i)}}module.exports={cache:cache,generateCache:generateCache,generateNumber:generateBuffer}},{"safe-buffer":46}],25:[function(require,module,exports){function Packet(){this.cmd=null;this.retain=false;this.qos=0;this.dup=false;this.length=-1;this.topic=null;this.payload=null}module.exports=Packet},{}],26:[function(require,module,exports){"use strict";var bl=require("bl");var inherits=require("inherits");var EE=require("events").EventEmitter;var Packet=require("./packet");var constants=require("./constants");function Parser(){if(!(this instanceof Parser))return new Parser;this._states=["_parseHeader","_parseLength","_parsePayload","_newPacket"];this._resetState()}inherits(Parser,EE);Parser.prototype._resetState=function(){this.packet=new Packet;this.error=null;this._list=bl();this._stateCounter=0};Parser.prototype.parse=function(buf){if(this.error)this._resetState();this._list.append(buf);while((this.packet.length!==-1||this._list.length>0)&&this[this._states[this._stateCounter]]()&&!this.error){this._stateCounter++;if(this._stateCounter>=this._states.length)this._stateCounter=0}return this._list.length};Parser.prototype._parseHeader=function(){var zero=this._list.readUInt8(0);this.packet.cmd=constants.types[zero>>constants.CMD_SHIFT];this.packet.retain=(zero&constants.RETAIN_MASK)!==0;this.packet.qos=zero>>constants.QOS_SHIFT&constants.QOS_MASK;this.packet.dup=(zero&constants.DUP_MASK)!==0;this._list.consume(1);return true};Parser.prototype._parseLength=function(){var bytes=0;var mul=1;var length=0;var result=true;var current;while(bytes<5){current=this._list.readUInt8(bytes++);length+=mul*(current&constants.LENGTH_MASK);mul*=128;if((current&constants.LENGTH_FIN_MASK)===0)break;if(this._list.length<=bytes){result=false;break}}if(result){this.packet.length=length;this._list.consume(bytes)}return result};Parser.prototype._parsePayload=function(){var result=false;if(this.packet.length===0||this._list.length>=this.packet.length){this._pos=0;switch(this.packet.cmd){case"connect":this._parseConnect();break;case"connack":this._parseConnack();break;case"publish":this._parsePublish();break;case"puback":case"pubrec":case"pubrel":case"pubcomp":this._parseMessageId();break;case"subscribe":this._parseSubscribe();break;case"suback":this._parseSuback();break;case"unsubscribe":this._parseUnsubscribe();break;case"unsuback":this._parseUnsuback();break;case"pingreq":case"pingresp":case"disconnect":break;default:this._emitError(new Error("Not supported"))}result=true}return result};Parser.prototype._parseConnect=function(){var protocolId;var clientId;var topic;var payload;var password;var username;var flags={};var packet=this.packet;protocolId=this._parseString();if(protocolId===null)return this._emitError(new Error("Cannot parse protocolId"));if(protocolId!=="MQTT"&&protocolId!=="MQIsdp"){return this._emitError(new Error("Invalid protocolId"))}packet.protocolId=protocolId;if(this._pos>=this._list.length)return this._emitError(new Error("Packet too short"));packet.protocolVersion=this._list.readUInt8(this._pos);if(packet.protocolVersion!==3&&packet.protocolVersion!==4){return this._emitError(new Error("Invalid protocol version"))}this._pos++;if(this._pos>=this._list.length){return this._emitError(new Error("Packet too short"))}flags.username=this._list.readUInt8(this._pos)&constants.USERNAME_MASK;flags.password=this._list.readUInt8(this._pos)&constants.PASSWORD_MASK;flags.will=this._list.readUInt8(this._pos)&constants.WILL_FLAG_MASK;if(flags.will){packet.will={};packet.will.retain=(this._list.readUInt8(this._pos)&constants.WILL_RETAIN_MASK)!==0;packet.will.qos=(this._list.readUInt8(this._pos)&constants.WILL_QOS_MASK)>>constants.WILL_QOS_SHIFT}packet.clean=(this._list.readUInt8(this._pos)&constants.CLEAN_SESSION_MASK)!==0;this._pos++;packet.keepalive=this._parseNum();if(packet.keepalive===-1)return this._emitError(new Error("Packet too short"));clientId=this._parseString();if(clientId===null)return this._emitError(new Error("Packet too short"));packet.clientId=clientId;if(flags.will){topic=this._parseString();if(topic===null)return this._emitError(new Error("Cannot parse will topic"));packet.will.topic=topic;payload=this._parseBuffer();if(payload===null)return this._emitError(new Error("Cannot parse will payload"));packet.will.payload=payload}if(flags.username){username=this._parseString();if(username===null)return this._emitError(new Error("Cannot parse username"));packet.username=username}if(flags.password){password=this._parseBuffer();if(password===null)return this._emitError(new Error("Cannot parse password"));packet.password=password}return packet};Parser.prototype._parseConnack=function(){var packet=this.packet;if(this._list.length<2)return null;packet.sessionPresent=!!(this._list.readUInt8(this._pos++)&constants.SESSIONPRESENT_MASK);packet.returnCode=this._list.readUInt8(this._pos);if(packet.returnCode===-1)return this._emitError(new Error("Cannot parse return code"))};Parser.prototype._parsePublish=function(){var packet=this.packet;packet.topic=this._parseString();if(packet.topic===null)return this._emitError(new Error("Cannot parse topic"));if(packet.qos>0)if(!this._parseMessageId()){return}packet.payload=this._list.slice(this._pos,packet.length)};Parser.prototype._parseSubscribe=function(){var packet=this.packet;var topic;var qos;if(packet.qos!==1){return this._emitError(new Error("Wrong subscribe header"))}packet.subscriptions=[];if(!this._parseMessageId()){return}while(this._pos<packet.length){topic=this._parseString();if(topic===null)return this._emitError(new Error("Cannot parse topic"));qos=this._list.readUInt8(this._pos++);packet.subscriptions.push({topic:topic,qos:qos})}};Parser.prototype._parseSuback=function(){this.packet.granted=[];if(!this._parseMessageId()){return}while(this._pos<this.packet.length){this.packet.granted.push(this._list.readUInt8(this._pos++))}};Parser.prototype._parseUnsubscribe=function(){var packet=this.packet;packet.unsubscriptions=[];if(!this._parseMessageId()){return}while(this._pos<packet.length){var topic;topic=this._parseString();if(topic===null)return this._emitError(new Error("Cannot parse topic"));packet.unsubscriptions.push(topic)}};Parser.prototype._parseUnsuback=function(){if(!this._parseMessageId())return this._emitError(new Error("Cannot parse messageId"))};Parser.prototype._parseMessageId=function(){var packet=this.packet;packet.messageId=this._parseNum();if(packet.messageId===null){this._emitError(new Error("Cannot parse messageId"));return false}return true};Parser.prototype._parseString=function(maybeBuffer){var length=this._parseNum();var result;var end=length+this._pos;if(length===-1||end>this._list.length||end>this.packet.length)return null;result=this._list.toString("utf8",this._pos,end);this._pos+=length;return result};Parser.prototype._parseBuffer=function(){var length=this._parseNum();var result;var end=length+this._pos;if(length===-1||end>this._list.length||end>this.packet.length)return null;result=this._list.slice(this._pos,end);this._pos+=length;return result};Parser.prototype._parseNum=function(){if(this._list.length-this._pos<2)return-1;var result=this._list.readUInt16BE(this._pos);this._pos+=2;return result};Parser.prototype._newPacket=function(){if(this.packet){this._list.consume(this.packet.length);this.emit("packet",this.packet)}this.packet=new Packet;return true};Parser.prototype._emitError=function(err){this.error=err;this.emit("error",err)};module.exports=Parser},{"./constants":21,"./packet":25,bl:10,events:16,inherits:18}],27:[function(require,module,exports){"use strict";var protocol=require("./constants");var Buffer=require("safe-buffer").Buffer;var empty=Buffer.allocUnsafe(0);var zeroBuf=Buffer.from([0]);var numbers=require("./numbers");var nextTick=require("process-nextick-args");var numCache=numbers.cache;var generateNumber=numbers.generateNumber;var generateCache=numbers.generateCache;var writeNumber=writeNumberCached;var toGenerate=true;function generate(packet,stream){if(stream.cork){stream.cork();nextTick(uncork,stream)}if(toGenerate){toGenerate=false;generateCache()}switch(packet.cmd){case"connect":return connect(packet,stream);case"connack":return connack(packet,stream);case"publish":return publish(packet,stream);case"puback":case"pubrec":case"pubrel":case"pubcomp":case"unsuback":return confirmation(packet,stream);case"subscribe":return subscribe(packet,stream);case"suback":return suback(packet,stream);case"unsubscribe":return unsubscribe(packet,stream);case"pingreq":case"pingresp":case"disconnect":return emptyPacket(packet,stream);default:stream.emit("error",new Error("Unknown command"));return false}}Object.defineProperty(generate,"cacheNumbers",{get:function(){return writeNumber===writeNumberCached},set:function(value){if(value){if(!numCache||Object.keys(numCache).length===0)toGenerate=true;writeNumber=writeNumberCached}else{toGenerate=false;writeNumber=writeNumberGenerated}}});function uncork(stream){stream.uncork()}function connect(opts,stream){var settings=opts||{};var protocolId=settings.protocolId||"MQTT";var protocolVersion=settings.protocolVersion||4;var will=settings.will;var clean=settings.clean;var keepalive=settings.keepalive||0;var clientId=settings.clientId||"";var username=settings.username;var password=settings.password;if(clean===undefined)clean=true;var length=0;if(!protocolId||typeof protocolId!=="string"&&!Buffer.isBuffer(protocolId)){stream.emit("error",new Error("Invalid protocolId"));return false}else length+=protocolId.length+2;if(protocolVersion!==3&&protocolVersion!==4){stream.emit("error",new Error("Invalid protocol version"));return false}else length+=1;if((typeof clientId==="string"||Buffer.isBuffer(clientId))&&(clientId||protocolVersion===4)&&(clientId||clean)){length+=clientId.length+2}else{if(protocolVersion<4){stream.emit("error",new Error("clientId must be supplied before 3.1.1"));return false}if(clean*1===0){stream.emit("error",new Error("clientId must be given if cleanSession set to 0"));return false}}if(typeof keepalive!=="number"||keepalive<0||keepalive>65535||keepalive%1!==0){stream.emit("error",new Error("Invalid keepalive"));return false}else length+=2;length+=1;if(will){if(typeof will!=="object"){stream.emit("error",new Error("Invalid will"));return false}if(!will.topic||typeof will.topic!=="string"){stream.emit("error",new Error("Invalid will topic"));return false}else{length+=Buffer.byteLength(will.topic)+2}if(will.payload&&will.payload){if(will.payload.length>=0){if(typeof will.payload==="string"){length+=Buffer.byteLength(will.payload)+2}else{length+=will.payload.length+2}}else{stream.emit("error",new Error("Invalid will payload"));return false}}else{length+=2}}if(username){if(username.length){length+=Buffer.byteLength(username)+2}else{stream.emit("error",new Error("Invalid username"));return false}}if(password){if(password.length){length+=byteLength(password)+2}else{stream.emit("error",new Error("Invalid password"));return false}}stream.write(protocol.CONNECT_HEADER);writeLength(stream,length);writeStringOrBuffer(stream,protocolId);stream.write(protocolVersion===4?protocol.VERSION4:protocol.VERSION3);var flags=0;flags|=username?protocol.USERNAME_MASK:0;flags|=password?protocol.PASSWORD_MASK:0;flags|=will&&will.retain?protocol.WILL_RETAIN_MASK:0;flags|=will&&will.qos?will.qos<<protocol.WILL_QOS_SHIFT:0;flags|=will?protocol.WILL_FLAG_MASK:0;flags|=clean?protocol.CLEAN_SESSION_MASK:0;stream.write(Buffer.from([flags]));writeNumber(stream,keepalive);writeStringOrBuffer(stream,clientId);if(will){writeString(stream,will.topic);writeStringOrBuffer(stream,will.payload)}if(username)writeStringOrBuffer(stream,username);if(password)writeStringOrBuffer(stream,password);return true}function connack(opts,stream){var settings=opts||{};var rc=settings.returnCode;if(typeof rc!=="number"){stream.emit("error",new Error("Invalid return code"));return false}stream.write(protocol.CONNACK_HEADER);writeLength(stream,2);stream.write(opts.sessionPresent?protocol.SESSIONPRESENT_HEADER:zeroBuf);return stream.write(Buffer.from([rc]))}function publish(opts,stream){var settings=opts||{};var qos=settings.qos||0;var retain=settings.retain?protocol.RETAIN_MASK:0;var topic=settings.topic;var payload=settings.payload||empty;var id=settings.messageId;var length=0;if(typeof topic==="string")length+=Buffer.byteLength(topic)+2;else if(Buffer.isBuffer(topic))length+=topic.length+2;else{stream.emit("error",new Error("Invalid topic"));return false}if(!Buffer.isBuffer(payload))length+=Buffer.byteLength(payload);else length+=payload.length;if(qos&&typeof id!=="number"){stream.emit("error",new Error("Invalid messageId"));return false}else if(qos)length+=2;stream.write(protocol.PUBLISH_HEADER[qos][opts.dup?1:0][retain?1:0]);writeLength(stream,length);writeNumber(stream,byteLength(topic));stream.write(topic);if(qos>0)writeNumber(stream,id);return stream.write(payload)}function confirmation(opts,stream){var settings=opts||{};var type=settings.cmd||"puback";var id=settings.messageId;var dup=settings.dup&&type==="pubrel"?protocol.DUP_MASK:0;var qos=0;if(type==="pubrel")qos=1;if(typeof id!=="number"){stream.emit("error",new Error("Invalid messageId"));return false}stream.write(protocol.ACKS[type][qos][dup][0]);writeLength(stream,2);return writeNumber(stream,id)}function subscribe(opts,stream){var settings=opts||{};var dup=settings.dup?protocol.DUP_MASK:0;var id=settings.messageId;var subs=settings.subscriptions;var length=0;if(typeof id!=="number"){stream.emit("error",new Error("Invalid messageId"));return false}else length+=2;if(typeof subs==="object"&&subs.length){for(var i=0;i<subs.length;i+=1){var itopic=subs[i].topic;var iqos=subs[i].qos;if(typeof itopic!=="string"){stream.emit("error",new Error("Invalid subscriptions - invalid topic"));return false}if(typeof iqos!=="number"){stream.emit("error",new Error("Invalid subscriptions - invalid qos"));return false}length+=Buffer.byteLength(itopic)+2+1}}else{stream.emit("error",new Error("Invalid subscriptions"));return false}stream.write(protocol.SUBSCRIBE_HEADER[1][dup?1:0][0]);writeLength(stream,length);writeNumber(stream,id);var result=true;for(var j=0;j<subs.length;j++){var sub=subs[j];var jtopic=sub.topic;var jqos=sub.qos;writeString(stream,jtopic);result=stream.write(protocol.QOS[jqos])}return result}function suback(opts,stream){var settings=opts||{};var id=settings.messageId;var granted=settings.granted;var length=0;if(typeof id!=="number"){stream.emit("error",new Error("Invalid messageId"));return false}else length+=2;if(typeof granted==="object"&&granted.length){for(var i=0;i<granted.length;i+=1){if(typeof granted[i]!=="number"){stream.emit("error",new Error("Invalid qos vector"));return false}length+=1}}else{stream.emit("error",new Error("Invalid qos vector"));return false}stream.write(protocol.SUBACK_HEADER);writeLength(stream,length);writeNumber(stream,id);return stream.write(Buffer.from(granted))}function unsubscribe(opts,stream){var settings=opts||{};var id=settings.messageId;var dup=settings.dup?protocol.DUP_MASK:0;var unsubs=settings.unsubscriptions;var length=0;if(typeof id!=="number"){stream.emit("error",new Error("Invalid messageId"));return false}else{length+=2}if(typeof unsubs==="object"&&unsubs.length){for(var i=0;i<unsubs.length;i+=1){if(typeof unsubs[i]!=="string"){stream.emit("error",new Error("Invalid unsubscriptions"));return false}length+=Buffer.byteLength(unsubs[i])+2}}else{stream.emit("error",new Error("Invalid unsubscriptions"));return false}stream.write(protocol.UNSUBSCRIBE_HEADER[1][dup?1:0][0]);writeLength(stream,length);writeNumber(stream,id);var result=true;for(var j=0;j<unsubs.length;j++){result=writeString(stream,unsubs[j])}return result}function emptyPacket(opts,stream){return stream.write(protocol.EMPTY[opts.cmd])}function calcLengthLength(length){if(length>=0&&length<128)return 1;else if(length>=128&&length<16384)return 2;else if(length>=16384&&length<2097152)return 3;else if(length>=2097152&&length<268435456)return 4;else return 0}function genBufLength(length){var digit=0;var pos=0;var buffer=Buffer.allocUnsafe(calcLengthLength(length));do{digit=length%128|0;length=length/128|0;if(length>0)digit=digit|128;buffer.writeUInt8(digit,pos++,true)}while(length>0);return buffer}var lengthCache={};function writeLength(stream,length){var buffer=lengthCache[length];if(!buffer){buffer=genBufLength(length);if(length<16384)lengthCache[length]=buffer}stream.write(buffer)}function writeString(stream,string){var strlen=Buffer.byteLength(string);writeNumber(stream,strlen);stream.write(string,"utf8")}function writeNumberCached(stream,number){return stream.write(numCache[number])}function writeNumberGenerated(stream,number){return stream.write(generateNumber(number))}function writeStringOrBuffer(stream,toWrite){if(toWrite&&typeof toWrite==="string")writeString(stream,toWrite);else if(toWrite){writeNumber(stream,toWrite.length);stream.write(toWrite)}else writeNumber(stream,0)}function byteLength(bufOrString){if(!bufOrString)return 0;else if(Buffer.isBuffer(bufOrString))return bufOrString.length;else return Buffer.byteLength(bufOrString)}module.exports=generate},{"./constants":21,"./numbers":24,"process-nextick-args":29,"safe-buffer":46}],28:[function(require,module,exports){var wrappy=require("wrappy");module.exports=wrappy(once);module.exports.strict=wrappy(onceStrict);once.proto=once(function(){Object.defineProperty(Function.prototype,"once",{value:function(){return once(this)},configurable:true});Object.defineProperty(Function.prototype,"onceStrict",{value:function(){return onceStrict(this)},configurable:true})});function once(fn){var f=function(){if(f.called)return f.value;f.called=true;return f.value=fn.apply(this,arguments)};f.called=false;return f}function onceStrict(fn){var f=function(){if(f.called)throw new Error(f.onceError);f.called=true;return f.value=fn.apply(this,arguments)};var name=fn.name||"Function wrapped with `once`";f.onceError=name+" shouldn't be called more than once";f.called=false;return f}},{wrappy:57}],29:[function(require,module,exports){(function(process){"use strict";if(!process.version||process.version.indexOf("v0.")===0||process.version.indexOf("v1.")===0&&process.version.indexOf("v1.8.")!==0){module.exports=nextTick}else{module.exports=process.nextTick}function nextTick(fn,arg1,arg2,arg3){if(typeof fn!=="function"){throw new TypeError('"callback" argument must be a function')}var len=arguments.length;var args,i;switch(len){case 0:case 1:return process.nextTick(fn);case 2:return process.nextTick(function afterTickOne(){fn.call(null,arg1)});case 3:return process.nextTick(function afterTickTwo(){fn.call(null,arg1,arg2)});case 4:return process.nextTick(function afterTickThree(){fn.call(null,arg1,arg2,arg3)});default:args=new Array(len-1);i=0;while(i<args.length){args[i++]=arguments[i]}return process.nextTick(function afterTick(){fn.apply(null,args)})}}}).call(this,require("_process"))},{_process:30}],30:[function(require,module,exports){var process=module.exports={};var cachedSetTimeout;var cachedClearTimeout;function defaultSetTimout(){throw new Error("setTimeout has not been defined")}function defaultClearTimeout(){throw new Error("clearTimeout has not been defined")}(function(){try{if(typeof setTimeout==="function"){cachedSetTimeout=setTimeout}else{cachedSetTimeout=defaultSetTimout}}catch(e){cachedSetTimeout=defaultSetTimout}try{if(typeof clearTimeout==="function"){cachedClearTimeout=clearTimeout}else{cachedClearTimeout=defaultClearTimeout}}catch(e){cachedClearTimeout=defaultClearTimeout}})();function runTimeout(fun){if(cachedSetTimeout===setTimeout){return setTimeout(fun,0)}if((cachedSetTimeout===defaultSetTimout||!cachedSetTimeout)&&setTimeout){cachedSetTimeout=setTimeout;return setTimeout(fun,0)}try{return cachedSetTimeout(fun,0)}catch(e){try{return cachedSetTimeout.call(null,fun,0)}catch(e){return cachedSetTimeout.call(this,fun,0)}}}function runClearTimeout(marker){if(cachedClearTimeout===clearTimeout){return clearTimeout(marker)}if((cachedClearTimeout===defaultClearTimeout||!cachedClearTimeout)&&clearTimeout){cachedClearTimeout=clearTimeout;return clearTimeout(marker)}try{return cachedClearTimeout(marker)}catch(e){try{return cachedClearTimeout.call(null,marker)}catch(e){return cachedClearTimeout.call(this,marker)}}}var queue=[];var draining=false;var currentQueue;var queueIndex=-1;function cleanUpNextTick(){if(!draining||!currentQueue){return}draining=false;if(currentQueue.length){queue=currentQueue.concat(queue)}else{queueIndex=-1}if(queue.length){drainQueue()}}function drainQueue(){if(draining){return}var timeout=runTimeout(cleanUpNextTick);draining=true;var len=queue.length;while(len){currentQueue=queue;queue=[];while(++queueIndex<len){if(currentQueue){currentQueue[queueIndex].run()}}queueIndex=-1;len=queue.length}currentQueue=null;draining=false;runClearTimeout(timeout)}process.nextTick=function(fun){var args=new Array(arguments.length-1);if(arguments.length>1){for(var i=1;i<arguments.length;i++){args[i-1]=arguments[i]}}queue.push(new Item(fun,args));if(queue.length===1&&!draining){runTimeout(drainQueue)}};function Item(fun,array){this.fun=fun;this.array=array}Item.prototype.run=function(){this.fun.apply(null,this.array)};process.title="browser";process.browser=true;process.env={};process.argv=[];process.version="";process.versions={};function noop(){}process.on=noop;process.addListener=noop;process.once=noop;process.off=noop;process.removeListener=noop;process.removeAllListeners=noop;process.emit=noop;process.prependListener=noop;process.prependOnceListener=noop;process.listeners=function(name){return[]};process.binding=function(name){throw new Error("process.binding is not supported")};process.cwd=function(){return"/"};process.chdir=function(dir){throw new Error("process.chdir is not supported")};process.umask=function(){return 0}},{}],31:[function(require,module,exports){(function(global){(function(root){var freeExports=typeof exports=="object"&&exports&&!exports.nodeType&&exports;var freeModule=typeof module=="object"&&module&&!module.nodeType&&module;var freeGlobal=typeof global=="object"&&global;if(freeGlobal.global===freeGlobal||freeGlobal.window===freeGlobal||freeGlobal.self===freeGlobal){root=freeGlobal}var punycode,maxInt=2147483647,base=36,tMin=1,tMax=26,skew=38,damp=700,initialBias=72,initialN=128,delimiter="-",regexPunycode=/^xn--/,regexNonASCII=/[^\x20-\x7E]/,regexSeparators=/[\x2E\u3002\uFF0E\uFF61]/g,errors={overflow:"Overflow: input needs wider integers to process","not-basic":"Illegal input >= 0x80 (not a basic code point)","invalid-input":"Invalid input"},baseMinusTMin=base-tMin,floor=Math.floor,stringFromCharCode=String.fromCharCode,key;function error(type){throw new RangeError(errors[type])}function map(array,fn){var length=array.length;var result=[];while(length--){result[length]=fn(array[length])}return result}function mapDomain(string,fn){var parts=string.split("@");var result="";if(parts.length>1){result=parts[0]+"@";string=parts[1]}string=string.replace(regexSeparators,".");var labels=string.split(".");var encoded=map(labels,fn).join(".");return result+encoded}function ucs2decode(string){var output=[],counter=0,length=string.length,value,extra;while(counter<length){value=string.charCodeAt(counter++);if(value>=55296&&value<=56319&&counter<length){extra=string.charCodeAt(counter++);if((extra&64512)==56320){output.push(((value&1023)<<10)+(extra&1023)+65536)}else{output.push(value);counter--}}else{output.push(value)}}return output}function ucs2encode(array){return map(array,function(value){var output="";if(value>65535){value-=65536;output+=stringFromCharCode(value>>>10&1023|55296);value=56320|value&1023}output+=stringFromCharCode(value);return output}).join("")}function basicToDigit(codePoint){if(codePoint-48<10){return codePoint-22}if(codePoint-65<26){return codePoint-65}if(codePoint-97<26){return codePoint-97}return base}function digitToBasic(digit,flag){return digit+22+75*(digit<26)-((flag!=0)<<5)}function adapt(delta,numPoints,firstTime){var k=0;delta=firstTime?floor(delta/damp):delta>>1;delta+=floor(delta/numPoints);for(;delta>baseMinusTMin*tMax>>1;k+=base){delta=floor(delta/baseMinusTMin)}return floor(k+(baseMinusTMin+1)*delta/(delta+skew))}function decode(input){var output=[],inputLength=input.length,out,i=0,n=initialN,bias=initialBias,basic,j,index,oldi,w,k,digit,t,baseMinusT;basic=input.lastIndexOf(delimiter);if(basic<0){basic=0}for(j=0;j<basic;++j){if(input.charCodeAt(j)>=128){error("not-basic")}output.push(input.charCodeAt(j))}for(index=basic>0?basic+1:0;index<inputLength;){for(oldi=i,w=1,k=base;;k+=base){if(index>=inputLength){error("invalid-input")}digit=basicToDigit(input.charCodeAt(index++));if(digit>=base||digit>floor((maxInt-i)/w)){error("overflow")}i+=digit*w;t=k<=bias?tMin:k>=bias+tMax?tMax:k-bias;if(digit<t){break}baseMinusT=base-t;if(w>floor(maxInt/baseMinusT)){error("overflow")}w*=baseMinusT}out=output.length+1;bias=adapt(i-oldi,out,oldi==0);if(floor(i/out)>maxInt-n){error("overflow")}n+=floor(i/out);i%=out;output.splice(i++,0,n)}return ucs2encode(output)}function encode(input){var n,delta,handledCPCount,basicLength,bias,j,m,q,k,t,currentValue,output=[],inputLength,handledCPCountPlusOne,baseMinusT,qMinusT;input=ucs2decode(input);inputLength=input.length;n=initialN;delta=0;bias=initialBias;for(j=0;j<inputLength;++j){currentValue=input[j];if(currentValue<128){output.push(stringFromCharCode(currentValue))}}handledCPCount=basicLength=output.length;if(basicLength){output.push(delimiter)}while(handledCPCount<inputLength){for(m=maxInt,j=0;j<inputLength;++j){currentValue=input[j];if(currentValue>=n&&currentValue<m){m=currentValue}}handledCPCountPlusOne=handledCPCount+1;if(m-n>floor((maxInt-delta)/handledCPCountPlusOne)){error("overflow")}delta+=(m-n)*handledCPCountPlusOne;n=m;for(j=0;j<inputLength;++j){currentValue=input[j];if(currentValue<n&&++delta>maxInt){error("overflow")}if(currentValue==n){for(q=delta,k=base;;k+=base){t=k<=bias?tMin:k>=bias+tMax?tMax:k-bias;if(q<t){break}qMinusT=q-t;baseMinusT=base-t;output.push(stringFromCharCode(digitToBasic(t+qMinusT%baseMinusT,0)));q=floor(qMinusT/baseMinusT)}output.push(stringFromCharCode(digitToBasic(q,0)));bias=adapt(delta,handledCPCountPlusOne,handledCPCount==basicLength);delta=0;++handledCPCount}}++delta;++n}return output.join("")}function toUnicode(input){return mapDomain(input,function(string){return regexPunycode.test(string)?decode(string.slice(4).toLowerCase()):string})}function toASCII(input){return mapDomain(input,function(string){return regexNonASCII.test(string)?"xn--"+encode(string):string})}punycode={version:"1.4.1",ucs2:{decode:ucs2decode,encode:ucs2encode},decode:decode,encode:encode,toASCII:toASCII,toUnicode:toUnicode};if(typeof define=="function"&&typeof define.amd=="object"&&define.amd){define("punycode",function(){return punycode})}else if(freeExports&&freeModule){if(module.exports==freeExports){freeModule.exports=punycode}else{for(key in punycode){punycode.hasOwnProperty(key)&&(freeExports[key]=punycode[key])}}}else{root.punycode=punycode}})(this)}).call(this,typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{}],32:[function(require,module,exports){"use strict";function hasOwnProperty(obj,prop){return Object.prototype.hasOwnProperty.call(obj,prop)}module.exports=function(qs,sep,eq,options){sep=sep||"&";eq=eq||"=";var obj={};if(typeof qs!=="string"||qs.length===0){return obj}var regexp=/\+/g;qs=qs.split(sep);var maxKeys=1e3;if(options&&typeof options.maxKeys==="number"){maxKeys=options.maxKeys}var len=qs.length;if(maxKeys>0&&len>maxKeys){len=maxKeys}for(var i=0;i<len;++i){var x=qs[i].replace(regexp,"%20"),idx=x.indexOf(eq),kstr,vstr,k,v;if(idx>=0){kstr=x.substr(0,idx);vstr=x.substr(idx+1)}else{kstr=x;vstr=""}k=decodeURIComponent(kstr);v=decodeURIComponent(vstr);if(!hasOwnProperty(obj,k)){obj[k]=v}else if(isArray(obj[k])){obj[k].push(v)}else{obj[k]=[obj[k],v]}}return obj};var isArray=Array.isArray||function(xs){return Object.prototype.toString.call(xs)==="[object Array]"}},{}],33:[function(require,module,exports){"use strict";var stringifyPrimitive=function(v){switch(typeof v){case"string":return v;case"boolean":return v?"true":"false";case"number":return isFinite(v)?v:"";default:return""}};module.exports=function(obj,sep,eq,name){sep=sep||"&";eq=eq||"=";if(obj===null){obj=undefined}if(typeof obj==="object"){return map(objectKeys(obj),function(k){var ks=encodeURIComponent(stringifyPrimitive(k))+eq;if(isArray(obj[k])){return map(obj[k],function(v){return ks+encodeURIComponent(stringifyPrimitive(v))}).join(sep)}else{return ks+encodeURIComponent(stringifyPrimitive(obj[k]))}}).join(sep)}if(!name)return"";return encodeURIComponent(stringifyPrimitive(name))+eq+encodeURIComponent(stringifyPrimitive(obj))};var isArray=Array.isArray||function(xs){return Object.prototype.toString.call(xs)==="[object Array]"};function map(xs,f){if(xs.map)return xs.map(f);var res=[];for(var i=0;i<xs.length;i++){res.push(f(xs[i],i))}return res}var objectKeys=Object.keys||function(obj){var res=[];for(var key in obj){if(Object.prototype.hasOwnProperty.call(obj,key))res.push(key)}return res}},{}],34:[function(require,module,exports){"use strict";exports.decode=exports.parse=require("./decode");exports.encode=exports.stringify=require("./encode")},{"./decode":32,"./encode":33}],35:[function(require,module,exports){module.exports=require("./lib/_stream_duplex.js")},{"./lib/_stream_duplex.js":36}],36:[function(require,module,exports){"use strict";var processNextTick=require("process-nextick-args");var objectKeys=Object.keys||function(obj){var keys=[];for(var key in obj){keys.push(key)}return keys};module.exports=Duplex;var util=require("core-util-is");util.inherits=require("inherits");var Readable=require("./_stream_readable");var Writable=require("./_stream_writable");util.inherits(Duplex,Readable);var keys=objectKeys(Writable.prototype);for(var v=0;v<keys.length;v++){var method=keys[v];if(!Duplex.prototype[method])Duplex.prototype[method]=Writable.prototype[method]}function Duplex(options){if(!(this instanceof Duplex))return new Duplex(options);Readable.call(this,options);Writable.call(this,options);if(options&&options.readable===false)this.readable=false;if(options&&options.writable===false)this.writable=false;this.allowHalfOpen=true;if(options&&options.allowHalfOpen===false)this.allowHalfOpen=false;this.once("end",onend)}function onend(){if(this.allowHalfOpen||this._writableState.ended)return;processNextTick(onEndNT,this)}function onEndNT(self){self.end()}Object.defineProperty(Duplex.prototype,"destroyed",{get:function(){if(this._readableState===undefined||this._writableState===undefined){return false}return this._readableState.destroyed&&this._writableState.destroyed},set:function(value){if(this._readableState===undefined||this._writableState===undefined){return}this._readableState.destroyed=value;this._writableState.destroyed=value}});Duplex.prototype._destroy=function(err,cb){this.push(null);this.end();processNextTick(cb,err)};function forEach(xs,f){for(var i=0,l=xs.length;i<l;i++){f(xs[i],i)}}},{"./_stream_readable":38,"./_stream_writable":40,"core-util-is":13,inherits:18,"process-nextick-args":29}],37:[function(require,module,exports){"use strict";module.exports=PassThrough;var Transform=require("./_stream_transform");var util=require("core-util-is");util.inherits=require("inherits");util.inherits(PassThrough,Transform);function PassThrough(options){if(!(this instanceof PassThrough))return new PassThrough(options);Transform.call(this,options)}PassThrough.prototype._transform=function(chunk,encoding,cb){cb(null,chunk)}},{"./_stream_transform":39,"core-util-is":13,inherits:18}],38:[function(require,module,exports){(function(process,global){"use strict";var processNextTick=require("process-nextick-args");module.exports=Readable;var isArray=require("isarray");var Duplex;Readable.ReadableState=ReadableState;var EE=require("events").EventEmitter;var EElistenerCount=function(emitter,type){return emitter.listeners(type).length};var Stream=require("./internal/streams/stream");var Buffer=require("safe-buffer").Buffer;var OurUint8Array=global.Uint8Array||function(){};function _uint8ArrayToBuffer(chunk){return Buffer.from(chunk)}function _isUint8Array(obj){return Buffer.isBuffer(obj)||obj instanceof OurUint8Array}var util=require("core-util-is");util.inherits=require("inherits");var debugUtil=require("util");var debug=void 0;if(debugUtil&&debugUtil.debuglog){debug=debugUtil.debuglog("stream")}else{debug=function(){}}var BufferList=require("./internal/streams/BufferList");var destroyImpl=require("./internal/streams/destroy");var StringDecoder;util.inherits(Readable,Stream);var kProxyEvents=["error","close","destroy","pause","resume"];function prependListener(emitter,event,fn){if(typeof emitter.prependListener==="function"){return emitter.prependListener(event,fn)}else{if(!emitter._events||!emitter._events[event])emitter.on(event,fn);else if(isArray(emitter._events[event]))emitter._events[event].unshift(fn);else emitter._events[event]=[fn,emitter._events[event]]}}function ReadableState(options,stream){Duplex=Duplex||require("./_stream_duplex");options=options||{};this.objectMode=!!options.objectMode;if(stream instanceof Duplex)this.objectMode=this.objectMode||!!options.readableObjectMode;var hwm=options.highWaterMark;var defaultHwm=this.objectMode?16:16*1024;this.highWaterMark=hwm||hwm===0?hwm:defaultHwm;this.highWaterMark=Math.floor(this.highWaterMark);this.buffer=new BufferList;this.length=0;this.pipes=null;this.pipesCount=0;this.flowing=null;this.ended=false;this.endEmitted=false;this.reading=false;this.sync=true;this.needReadable=false;this.emittedReadable=false;this.readableListening=false;this.resumeScheduled=false;this.destroyed=false;this.defaultEncoding=options.defaultEncoding||"utf8";this.awaitDrain=0;this.readingMore=false;this.decoder=null;this.encoding=null;if(options.encoding){if(!StringDecoder)StringDecoder=require("string_decoder/").StringDecoder;this.decoder=new StringDecoder(options.encoding);this.encoding=options.encoding}}function Readable(options){Duplex=Duplex||require("./_stream_duplex");if(!(this instanceof Readable))return new Readable(options);this._readableState=new ReadableState(options,this);this.readable=true;if(options){if(typeof options.read==="function")this._read=options.read;if(typeof options.destroy==="function")this._destroy=options.destroy}Stream.call(this)}Object.defineProperty(Readable.prototype,"destroyed",{get:function(){if(this._readableState===undefined){return false}return this._readableState.destroyed},set:function(value){if(!this._readableState){return}this._readableState.destroyed=value}});Readable.prototype.destroy=destroyImpl.destroy;Readable.prototype._undestroy=destroyImpl.undestroy;Readable.prototype._destroy=function(err,cb){this.push(null);cb(err)};Readable.prototype.push=function(chunk,encoding){var state=this._readableState;var skipChunkCheck;if(!state.objectMode){if(typeof chunk==="string"){encoding=encoding||state.defaultEncoding;if(encoding!==state.encoding){chunk=Buffer.from(chunk,encoding);encoding=""}skipChunkCheck=true}}else{skipChunkCheck=true}return readableAddChunk(this,chunk,encoding,false,skipChunkCheck)};Readable.prototype.unshift=function(chunk){return readableAddChunk(this,chunk,null,true,false)};function readableAddChunk(stream,chunk,encoding,addToFront,skipChunkCheck){var state=stream._readableState;if(chunk===null){state.reading=false;onEofChunk(stream,state)}else{var er;if(!skipChunkCheck)er=chunkInvalid(state,chunk);if(er){stream.emit("error",er)}else if(state.objectMode||chunk&&chunk.length>0){if(typeof chunk!=="string"&&!state.objectMode&&Object.getPrototypeOf(chunk)!==Buffer.prototype){chunk=_uint8ArrayToBuffer(chunk)}if(addToFront){if(state.endEmitted)stream.emit("error",new Error("stream.unshift() after end event"));else addChunk(stream,state,chunk,true)}else if(state.ended){stream.emit("error",new Error("stream.push() after EOF"))}else{state.reading=false;if(state.decoder&&!encoding){chunk=state.decoder.write(chunk);if(state.objectMode||chunk.length!==0)addChunk(stream,state,chunk,false);else maybeReadMore(stream,state)}else{addChunk(stream,state,chunk,false)}}}else if(!addToFront){state.reading=false}}return needMoreData(state)}function addChunk(stream,state,chunk,addToFront){if(state.flowing&&state.length===0&&!state.sync){stream.emit("data",chunk);stream.read(0)}else{state.length+=state.objectMode?1:chunk.length;if(addToFront)state.buffer.unshift(chunk);else state.buffer.push(chunk);if(state.needReadable)emitReadable(stream)}maybeReadMore(stream,state)}function chunkInvalid(state,chunk){var er;if(!_isUint8Array(chunk)&&typeof chunk!=="string"&&chunk!==undefined&&!state.objectMode){er=new TypeError("Invalid non-string/buffer chunk")}return er}function needMoreData(state){return!state.ended&&(state.needReadable||state.length<state.highWaterMark||state.length===0)}Readable.prototype.isPaused=function(){return this._readableState.flowing===false};Readable.prototype.setEncoding=function(enc){if(!StringDecoder)StringDecoder=require("string_decoder/").StringDecoder;this._readableState.decoder=new StringDecoder(enc);this._readableState.encoding=enc;return this};var MAX_HWM=8388608;function computeNewHighWaterMark(n){if(n>=MAX_HWM){n=MAX_HWM}else{n--;n|=n>>>1;n|=n>>>2;n|=n>>>4;n|=n>>>8;n|=n>>>16;n++}return n}function howMuchToRead(n,state){if(n<=0||state.length===0&&state.ended)return 0;if(state.objectMode)return 1;if(n!==n){if(state.flowing&&state.length)return state.buffer.head.data.length;else return state.length}if(n>state.highWaterMark)state.highWaterMark=computeNewHighWaterMark(n);if(n<=state.length)return n;if(!state.ended){state.needReadable=true;return 0}return state.length}Readable.prototype.read=function(n){debug("read",n);n=parseInt(n,10);var state=this._readableState;var nOrig=n;if(n!==0)state.emittedReadable=false;if(n===0&&state.needReadable&&(state.length>=state.highWaterMark||state.ended)){debug("read: emitReadable",state.length,state.ended);if(state.length===0&&state.ended)endReadable(this);else emitReadable(this);return null}n=howMuchToRead(n,state);if(n===0&&state.ended){if(state.length===0)endReadable(this);return null}var doRead=state.needReadable;debug("need readable",doRead);if(state.length===0||state.length-n<state.highWaterMark){doRead=true;debug("length less than watermark",doRead)}if(state.ended||state.reading){doRead=false;debug("reading or ended",doRead)}else if(doRead){debug("do read");state.reading=true;state.sync=true;if(state.length===0)state.needReadable=true;this._read(state.highWaterMark);state.sync=false;if(!state.reading)n=howMuchToRead(nOrig,state)}var ret;if(n>0)ret=fromList(n,state);else ret=null;if(ret===null){state.needReadable=true;n=0}else{state.length-=n}if(state.length===0){if(!state.ended)state.needReadable=true;if(nOrig!==n&&state.ended)endReadable(this)}if(ret!==null)this.emit("data",ret);return ret};function onEofChunk(stream,state){if(state.ended)return;if(state.decoder){var chunk=state.decoder.end();if(chunk&&chunk.length){state.buffer.push(chunk);state.length+=state.objectMode?1:chunk.length}}state.ended=true;emitReadable(stream)}function emitReadable(stream){var state=stream._readableState;state.needReadable=false;if(!state.emittedReadable){debug("emitReadable",state.flowing);state.emittedReadable=true;if(state.sync)processNextTick(emitReadable_,stream);else emitReadable_(stream)}}function emitReadable_(stream){debug("emit readable");stream.emit("readable");flow(stream)}function maybeReadMore(stream,state){if(!state.readingMore){state.readingMore=true;processNextTick(maybeReadMore_,stream,state)}}function maybeReadMore_(stream,state){var len=state.length;while(!state.reading&&!state.flowing&&!state.ended&&state.length<state.highWaterMark){debug("maybeReadMore read 0");stream.read(0);if(len===state.length)break;else len=state.length}state.readingMore=false}Readable.prototype._read=function(n){this.emit("error",new Error("_read() is not implemented"))};Readable.prototype.pipe=function(dest,pipeOpts){var src=this;var state=this._readableState;switch(state.pipesCount){case 0:state.pipes=dest;break;case 1:state.pipes=[state.pipes,dest];break;default:state.pipes.push(dest);break}state.pipesCount+=1;debug("pipe count=%d opts=%j",state.pipesCount,pipeOpts);var doEnd=(!pipeOpts||pipeOpts.end!==false)&&dest!==process.stdout&&dest!==process.stderr;var endFn=doEnd?onend:unpipe;if(state.endEmitted)processNextTick(endFn);else src.once("end",endFn);dest.on("unpipe",onunpipe);function onunpipe(readable,unpipeInfo){debug("onunpipe");if(readable===src){if(unpipeInfo&&unpipeInfo.hasUnpiped===false){unpipeInfo.hasUnpiped=true;cleanup()}}}function onend(){debug("onend");dest.end()}var ondrain=pipeOnDrain(src);dest.on("drain",ondrain);var cleanedUp=false;function cleanup(){debug("cleanup");dest.removeListener("close",onclose);dest.removeListener("finish",onfinish);dest.removeListener("drain",ondrain);dest.removeListener("error",onerror);dest.removeListener("unpipe",onunpipe);src.removeListener("end",onend);src.removeListener("end",unpipe);src.removeListener("data",ondata);cleanedUp=true;if(state.awaitDrain&&(!dest._writableState||dest._writableState.needDrain))ondrain()}var increasedAwaitDrain=false;src.on("data",ondata);function ondata(chunk){debug("ondata");increasedAwaitDrain=false;var ret=dest.write(chunk);if(false===ret&&!increasedAwaitDrain){if((state.pipesCount===1&&state.pipes===dest||state.pipesCount>1&&indexOf(state.pipes,dest)!==-1)&&!cleanedUp){debug("false write response, pause",src._readableState.awaitDrain);src._readableState.awaitDrain++;increasedAwaitDrain=true}src.pause()}}function onerror(er){debug("onerror",er);unpipe();dest.removeListener("error",onerror);if(EElistenerCount(dest,"error")===0)dest.emit("error",er)}prependListener(dest,"error",onerror);function onclose(){dest.removeListener("finish",onfinish);unpipe()}dest.once("close",onclose);function onfinish(){debug("onfinish");dest.removeListener("close",onclose);unpipe()}dest.once("finish",onfinish);function unpipe(){debug("unpipe");src.unpipe(dest)}dest.emit("pipe",src);if(!state.flowing){debug("pipe resume");src.resume()}return dest};function pipeOnDrain(src){return function(){var state=src._readableState;debug("pipeOnDrain",state.awaitDrain);if(state.awaitDrain)state.awaitDrain--;if(state.awaitDrain===0&&EElistenerCount(src,"data")){state.flowing=true;flow(src)}}}Readable.prototype.unpipe=function(dest){var state=this._readableState;var unpipeInfo={hasUnpiped:false};if(state.pipesCount===0)return this;if(state.pipesCount===1){if(dest&&dest!==state.pipes)return this;if(!dest)dest=state.pipes;state.pipes=null;state.pipesCount=0;state.flowing=false;if(dest)dest.emit("unpipe",this,unpipeInfo);return this}if(!dest){var dests=state.pipes;var len=state.pipesCount;state.pipes=null;state.pipesCount=0;state.flowing=false;for(var i=0;i<len;i++){dests[i].emit("unpipe",this,unpipeInfo)}return this}var index=indexOf(state.pipes,dest);if(index===-1)return this;state.pipes.splice(index,1);state.pipesCount-=1;if(state.pipesCount===1)state.pipes=state.pipes[0];dest.emit("unpipe",this,unpipeInfo);return this};Readable.prototype.on=function(ev,fn){var res=Stream.prototype.on.call(this,ev,fn);if(ev==="data"){if(this._readableState.flowing!==false)this.resume()}else if(ev==="readable"){var state=this._readableState;if(!state.endEmitted&&!state.readableListening){state.readableListening=state.needReadable=true;state.emittedReadable=false;if(!state.reading){processNextTick(nReadingNextTick,this)}else if(state.length){emitReadable(this)}}}return res};Readable.prototype.addListener=Readable.prototype.on;function nReadingNextTick(self){debug("readable nexttick read 0");self.read(0)}Readable.prototype.resume=function(){var state=this._readableState;if(!state.flowing){debug("resume");state.flowing=true;resume(this,state)}return this};function resume(stream,state){if(!state.resumeScheduled){state.resumeScheduled=true;processNextTick(resume_,stream,state)}}function resume_(stream,state){if(!state.reading){debug("resume read 0");stream.read(0)}state.resumeScheduled=false;state.awaitDrain=0;stream.emit("resume");flow(stream);if(state.flowing&&!state.reading)stream.read(0)}Readable.prototype.pause=function(){debug("call pause flowing=%j",this._readableState.flowing);if(false!==this._readableState.flowing){debug("pause");this._readableState.flowing=false;this.emit("pause")}return this};function flow(stream){var state=stream._readableState;debug("flow",state.flowing);while(state.flowing&&stream.read()!==null){}}Readable.prototype.wrap=function(stream){var state=this._readableState;var paused=false;var self=this;stream.on("end",function(){debug("wrapped end");if(state.decoder&&!state.ended){var chunk=state.decoder.end();if(chunk&&chunk.length)self.push(chunk)}self.push(null)});stream.on("data",function(chunk){debug("wrapped data");if(state.decoder)chunk=state.decoder.write(chunk);if(state.objectMode&&(chunk===null||chunk===undefined))return;else if(!state.objectMode&&(!chunk||!chunk.length))return;var ret=self.push(chunk);if(!ret){paused=true;stream.pause()}});for(var i in stream){if(this[i]===undefined&&typeof stream[i]==="function"){this[i]=function(method){return function(){return stream[method].apply(stream,arguments)}}(i)}}for(var n=0;n<kProxyEvents.length;n++){stream.on(kProxyEvents[n],self.emit.bind(self,kProxyEvents[n]))}self._read=function(n){debug("wrapped _read",n);if(paused){paused=false;stream.resume()}};return self};Readable._fromList=fromList;function fromList(n,state){if(state.length===0)return null;var ret;if(state.objectMode)ret=state.buffer.shift();else if(!n||n>=state.length){if(state.decoder)ret=state.buffer.join("");else if(state.buffer.length===1)ret=state.buffer.head.data;else ret=state.buffer.concat(state.length);state.buffer.clear()}else{ret=fromListPartial(n,state.buffer,state.decoder)}return ret}function fromListPartial(n,list,hasStrings){var ret;if(n<list.head.data.length){ret=list.head.data.slice(0,n);list.head.data=list.head.data.slice(n)}else if(n===list.head.data.length){ret=list.shift()}else{ret=hasStrings?copyFromBufferString(n,list):copyFromBuffer(n,list)}return ret}function copyFromBufferString(n,list){var p=list.head;var c=1;var ret=p.data;n-=ret.length;while(p=p.next){var str=p.data;var nb=n>str.length?str.length:n;if(nb===str.length)ret+=str;else ret+=str.slice(0,n);n-=nb;if(n===0){if(nb===str.length){++c;if(p.next)list.head=p.next;else list.head=list.tail=null}else{list.head=p;p.data=str.slice(nb)}break}++c}list.length-=c;return ret}function copyFromBuffer(n,list){var ret=Buffer.allocUnsafe(n);var p=list.head;var c=1;p.data.copy(ret);n-=p.data.length;while(p=p.next){var buf=p.data;var nb=n>buf.length?buf.length:n;buf.copy(ret,ret.length-n,0,nb);n-=nb;if(n===0){if(nb===buf.length){++c;if(p.next)list.head=p.next;else list.head=list.tail=null}else{list.head=p;p.data=buf.slice(nb)}break}++c}list.length-=c;return ret}function endReadable(stream){var state=stream._readableState;if(state.length>0)throw new Error('"endReadable()" called on non-empty stream');if(!state.endEmitted){state.ended=true;processNextTick(endReadableNT,state,stream)}}function endReadableNT(state,stream){if(!state.endEmitted&&state.length===0){state.endEmitted=true;stream.readable=false;stream.emit("end")}}function forEach(xs,f){for(var i=0,l=xs.length;i<l;i++){f(xs[i],i)}}function indexOf(xs,x){for(var i=0,l=xs.length;i<l;i++){if(xs[i]===x)return i}return-1}}).call(this,require("_process"),typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{"./_stream_duplex":36,"./internal/streams/BufferList":41,"./internal/streams/destroy":42,"./internal/streams/stream":43,_process:30,"core-util-is":13,events:16,inherits:18,isarray:20,"process-nextick-args":29,"safe-buffer":46,"string_decoder/":48,util:11}],39:[function(require,module,exports){"use strict";module.exports=Transform;var Duplex=require("./_stream_duplex");var util=require("core-util-is");util.inherits=require("inherits");util.inherits(Transform,Duplex);function TransformState(stream){this.afterTransform=function(er,data){return afterTransform(stream,er,data)};this.needTransform=false;this.transforming=false;this.writecb=null;this.writechunk=null;this.writeencoding=null}function afterTransform(stream,er,data){var ts=stream._transformState;ts.transforming=false;var cb=ts.writecb;if(!cb){return stream.emit("error",new Error("write callback called multiple times"))}ts.writechunk=null;ts.writecb=null;if(data!==null&&data!==undefined)stream.push(data);cb(er);var rs=stream._readableState;rs.reading=false;if(rs.needReadable||rs.length<rs.highWaterMark){stream._read(rs.highWaterMark)}}function Transform(options){if(!(this instanceof Transform))return new Transform(options);Duplex.call(this,options);this._transformState=new TransformState(this);var stream=this;this._readableState.needReadable=true;this._readableState.sync=false;if(options){if(typeof options.transform==="function")this._transform=options.transform;if(typeof options.flush==="function")this._flush=options.flush}this.once("prefinish",function(){if(typeof this._flush==="function")this._flush(function(er,data){done(stream,er,data)});else done(stream)})}Transform.prototype.push=function(chunk,encoding){this._transformState.needTransform=false;return Duplex.prototype.push.call(this,chunk,encoding)};Transform.prototype._transform=function(chunk,encoding,cb){throw new Error("_transform() is not implemented")};Transform.prototype._write=function(chunk,encoding,cb){var ts=this._transformState;ts.writecb=cb;ts.writechunk=chunk;ts.writeencoding=encoding;if(!ts.transforming){var rs=this._readableState;if(ts.needTransform||rs.needReadable||rs.length<rs.highWaterMark)this._read(rs.highWaterMark)}};Transform.prototype._read=function(n){var ts=this._transformState;if(ts.writechunk!==null&&ts.writecb&&!ts.transforming){ts.transforming=true;this._transform(ts.writechunk,ts.writeencoding,ts.afterTransform)}else{ts.needTransform=true}};Transform.prototype._destroy=function(err,cb){var _this=this;Duplex.prototype._destroy.call(this,err,function(err2){cb(err2);_this.emit("close")})};function done(stream,er,data){if(er)return stream.emit("error",er);if(data!==null&&data!==undefined)stream.push(data);var ws=stream._writableState;var ts=stream._transformState;if(ws.length)throw new Error("Calling transform done when ws.length != 0");if(ts.transforming)throw new Error("Calling transform done when still transforming");return stream.push(null)}},{"./_stream_duplex":36,"core-util-is":13,inherits:18}],40:[function(require,module,exports){(function(process,global){"use strict";var processNextTick=require("process-nextick-args");module.exports=Writable;function WriteReq(chunk,encoding,cb){this.chunk=chunk;this.encoding=encoding;this.callback=cb;this.next=null}function CorkedRequest(state){var _this=this;this.next=null;this.entry=null;this.finish=function(){onCorkedFinish(_this,state)}}var asyncWrite=!process.browser&&["v0.10","v0.9."].indexOf(process.version.slice(0,5))>-1?setImmediate:processNextTick;var Duplex;Writable.WritableState=WritableState;var util=require("core-util-is");util.inherits=require("inherits");var internalUtil={deprecate:require("util-deprecate")};var Stream=require("./internal/streams/stream");var Buffer=require("safe-buffer").Buffer;var OurUint8Array=global.Uint8Array||function(){};function _uint8ArrayToBuffer(chunk){return Buffer.from(chunk)}function _isUint8Array(obj){return Buffer.isBuffer(obj)||obj instanceof OurUint8Array}var destroyImpl=require("./internal/streams/destroy");util.inherits(Writable,Stream);function nop(){}function WritableState(options,stream){Duplex=Duplex||require("./_stream_duplex");options=options||{};this.objectMode=!!options.objectMode;if(stream instanceof Duplex)this.objectMode=this.objectMode||!!options.writableObjectMode;var hwm=options.highWaterMark;var defaultHwm=this.objectMode?16:16*1024;this.highWaterMark=hwm||hwm===0?hwm:defaultHwm;this.highWaterMark=Math.floor(this.highWaterMark);this.finalCalled=false;this.needDrain=false;this.ending=false;this.ended=false;this.finished=false;this.destroyed=false;var noDecode=options.decodeStrings===false;this.decodeStrings=!noDecode;this.defaultEncoding=options.defaultEncoding||"utf8";this.length=0;this.writing=false;this.corked=0;this.sync=true;this.bufferProcessing=false;this.onwrite=function(er){onwrite(stream,er)};this.writecb=null;this.writelen=0;this.bufferedRequest=null;this.lastBufferedRequest=null;this.pendingcb=0;this.prefinished=false;this.errorEmitted=false;this.bufferedRequestCount=0;this.corkedRequestsFree=new CorkedRequest(this)}WritableState.prototype.getBuffer=function getBuffer(){var current=this.bufferedRequest;var out=[];while(current){out.push(current);current=current.next}return out};(function(){try{Object.defineProperty(WritableState.prototype,"buffer",{get:internalUtil.deprecate(function(){return this.getBuffer()},"_writableState.buffer is deprecated. Use _writableState.getBuffer "+"instead.","DEP0003")})}catch(_){}})();var realHasInstance;if(typeof Symbol==="function"&&Symbol.hasInstance&&typeof Function.prototype[Symbol.hasInstance]==="function"){realHasInstance=Function.prototype[Symbol.hasInstance];Object.defineProperty(Writable,Symbol.hasInstance,{value:function(object){if(realHasInstance.call(this,object))return true;return object&&object._writableState instanceof WritableState}})}else{realHasInstance=function(object){return object instanceof this}}function Writable(options){Duplex=Duplex||require("./_stream_duplex");if(!realHasInstance.call(Writable,this)&&!(this instanceof Duplex)){return new Writable(options)}this._writableState=new WritableState(options,this);this.writable=true;if(options){if(typeof options.write==="function")this._write=options.write;if(typeof options.writev==="function")this._writev=options.writev;if(typeof options.destroy==="function")this._destroy=options.destroy;if(typeof options.final==="function")this._final=options.final}Stream.call(this)}Writable.prototype.pipe=function(){this.emit("error",new Error("Cannot pipe, not readable"))};function writeAfterEnd(stream,cb){var er=new Error("write after end");stream.emit("error",er);processNextTick(cb,er)}function validChunk(stream,state,chunk,cb){var valid=true;var er=false;if(chunk===null){er=new TypeError("May not write null values to stream")}else if(typeof chunk!=="string"&&chunk!==undefined&&!state.objectMode){er=new TypeError("Invalid non-string/buffer chunk")}if(er){stream.emit("error",er);processNextTick(cb,er);valid=false}return valid}Writable.prototype.write=function(chunk,encoding,cb){var state=this._writableState;var ret=false;var isBuf=_isUint8Array(chunk)&&!state.objectMode;if(isBuf&&!Buffer.isBuffer(chunk)){chunk=_uint8ArrayToBuffer(chunk)}if(typeof encoding==="function"){cb=encoding;encoding=null}if(isBuf)encoding="buffer";else if(!encoding)encoding=state.defaultEncoding;if(typeof cb!=="function")cb=nop;if(state.ended)writeAfterEnd(this,cb);else if(isBuf||validChunk(this,state,chunk,cb)){state.pendingcb++;ret=writeOrBuffer(this,state,isBuf,chunk,encoding,cb)}return ret};Writable.prototype.cork=function(){var state=this._writableState;state.corked++};Writable.prototype.uncork=function(){var state=this._writableState;if(state.corked){state.corked--;if(!state.writing&&!state.corked&&!state.finished&&!state.bufferProcessing&&state.bufferedRequest)clearBuffer(this,state)}};Writable.prototype.setDefaultEncoding=function setDefaultEncoding(encoding){if(typeof encoding==="string")encoding=encoding.toLowerCase();if(!(["hex","utf8","utf-8","ascii","binary","base64","ucs2","ucs-2","utf16le","utf-16le","raw"].indexOf((encoding+"").toLowerCase())>-1))throw new TypeError("Unknown encoding: "+encoding);this._writableState.defaultEncoding=encoding;return this};function decodeChunk(state,chunk,encoding){if(!state.objectMode&&state.decodeStrings!==false&&typeof chunk==="string"){chunk=Buffer.from(chunk,encoding)}return chunk}function writeOrBuffer(stream,state,isBuf,chunk,encoding,cb){if(!isBuf){var newChunk=decodeChunk(state,chunk,encoding);if(chunk!==newChunk){isBuf=true;encoding="buffer";chunk=newChunk}}var len=state.objectMode?1:chunk.length;state.length+=len;var ret=state.length<state.highWaterMark;if(!ret)state.needDrain=true;if(state.writing||state.corked){var last=state.lastBufferedRequest;state.lastBufferedRequest={chunk:chunk,encoding:encoding,isBuf:isBuf,callback:cb,next:null};if(last){last.next=state.lastBufferedRequest}else{state.bufferedRequest=state.lastBufferedRequest}state.bufferedRequestCount+=1}else{doWrite(stream,state,false,len,chunk,encoding,cb)}return ret}function doWrite(stream,state,writev,len,chunk,encoding,cb){state.writelen=len;state.writecb=cb;state.writing=true;state.sync=true;if(writev)stream._writev(chunk,state.onwrite);else stream._write(chunk,encoding,state.onwrite);state.sync=false}function onwriteError(stream,state,sync,er,cb){--state.pendingcb;if(sync){processNextTick(cb,er);processNextTick(finishMaybe,stream,state);stream._writableState.errorEmitted=true;stream.emit("error",er)}else{cb(er);stream._writableState.errorEmitted=true;stream.emit("error",er);finishMaybe(stream,state)}}function onwriteStateUpdate(state){state.writing=false;state.writecb=null;state.length-=state.writelen;state.writelen=0}function onwrite(stream,er){var state=stream._writableState;var sync=state.sync;var cb=state.writecb;onwriteStateUpdate(state);if(er)onwriteError(stream,state,sync,er,cb);else{var finished=needFinish(state);if(!finished&&!state.corked&&!state.bufferProcessing&&state.bufferedRequest){clearBuffer(stream,state)}if(sync){asyncWrite(afterWrite,stream,state,finished,cb)}else{afterWrite(stream,state,finished,cb)}}}function afterWrite(stream,state,finished,cb){if(!finished)onwriteDrain(stream,state);state.pendingcb--;cb();finishMaybe(stream,state)}function onwriteDrain(stream,state){if(state.length===0&&state.needDrain){state.needDrain=false;stream.emit("drain")}}function clearBuffer(stream,state){state.bufferProcessing=true;var entry=state.bufferedRequest;if(stream._writev&&entry&&entry.next){var l=state.bufferedRequestCount;var buffer=new Array(l);var holder=state.corkedRequestsFree;holder.entry=entry;var count=0;var allBuffers=true;while(entry){buffer[count]=entry;if(!entry.isBuf)allBuffers=false;entry=entry.next;count+=1}buffer.allBuffers=allBuffers;doWrite(stream,state,true,state.length,buffer,"",holder.finish);state.pendingcb++;state.lastBufferedRequest=null;if(holder.next){state.corkedRequestsFree=holder.next;holder.next=null}else{state.corkedRequestsFree=new CorkedRequest(state)}}else{while(entry){var chunk=entry.chunk;var encoding=entry.encoding;var cb=entry.callback;var len=state.objectMode?1:chunk.length;doWrite(stream,state,false,len,chunk,encoding,cb);entry=entry.next;if(state.writing){break}}if(entry===null)state.lastBufferedRequest=null}state.bufferedRequestCount=0;state.bufferedRequest=entry;state.bufferProcessing=false}Writable.prototype._write=function(chunk,encoding,cb){cb(new Error("_write() is not implemented"))};Writable.prototype._writev=null;Writable.prototype.end=function(chunk,encoding,cb){var state=this._writableState;if(typeof chunk==="function"){cb=chunk;chunk=null;encoding=null}else if(typeof encoding==="function"){cb=encoding;encoding=null}if(chunk!==null&&chunk!==undefined)this.write(chunk,encoding);if(state.corked){state.corked=1;this.uncork()}if(!state.ending&&!state.finished)endWritable(this,state,cb)};function needFinish(state){return state.ending&&state.length===0&&state.bufferedRequest===null&&!state.finished&&!state.writing}function callFinal(stream,state){stream._final(function(err){state.pendingcb--;if(err){stream.emit("error",err)}state.prefinished=true;stream.emit("prefinish");finishMaybe(stream,state)})}function prefinish(stream,state){if(!state.prefinished&&!state.finalCalled){if(typeof stream._final==="function"){state.pendingcb++;state.finalCalled=true;processNextTick(callFinal,stream,state)}else{state.prefinished=true;stream.emit("prefinish")}}}function finishMaybe(stream,state){var need=needFinish(state);if(need){prefinish(stream,state);if(state.pendingcb===0){state.finished=true;stream.emit("finish")}}return need}function endWritable(stream,state,cb){state.ending=true;finishMaybe(stream,state);if(cb){if(state.finished)processNextTick(cb);else stream.once("finish",cb)}state.ended=true;stream.writable=false}function onCorkedFinish(corkReq,state,err){var entry=corkReq.entry;corkReq.entry=null;while(entry){var cb=entry.callback;state.pendingcb--;cb(err);entry=entry.next}if(state.corkedRequestsFree){state.corkedRequestsFree.next=corkReq}else{state.corkedRequestsFree=corkReq}}Object.defineProperty(Writable.prototype,"destroyed",{get:function(){if(this._writableState===undefined){return false}return this._writableState.destroyed},set:function(value){if(!this._writableState){return}this._writableState.destroyed=value}});Writable.prototype.destroy=destroyImpl.destroy;Writable.prototype._undestroy=destroyImpl.undestroy;Writable.prototype._destroy=function(err,cb){this.end();cb(err)}}).call(this,require("_process"),typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{"./_stream_duplex":36,"./internal/streams/destroy":42,"./internal/streams/stream":43,_process:30,"core-util-is":13,inherits:18,"process-nextick-args":29,"safe-buffer":46,"util-deprecate":51}],41:[function(require,module,exports){"use strict";function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function")}}var Buffer=require("safe-buffer").Buffer;function copyBuffer(src,target,offset){src.copy(target,offset)}module.exports=function(){function BufferList(){_classCallCheck(this,BufferList);this.head=null;this.tail=null;this.length=0}BufferList.prototype.push=function push(v){var entry={data:v,next:null};if(this.length>0)this.tail.next=entry;else this.head=entry;this.tail=entry;++this.length};BufferList.prototype.unshift=function unshift(v){var entry={data:v,next:this.head};if(this.length===0)this.tail=entry;this.head=entry;++this.length};BufferList.prototype.shift=function shift(){if(this.length===0)return;var ret=this.head.data;if(this.length===1)this.head=this.tail=null;else this.head=this.head.next;--this.length;return ret};BufferList.prototype.clear=function clear(){this.head=this.tail=null;this.length=0};BufferList.prototype.join=function join(s){if(this.length===0)return"";var p=this.head;var ret=""+p.data;while(p=p.next){ret+=s+p.data}return ret};BufferList.prototype.concat=function concat(n){if(this.length===0)return Buffer.alloc(0);if(this.length===1)return this.head.data;var ret=Buffer.allocUnsafe(n>>>0);var p=this.head;var i=0;while(p){copyBuffer(p.data,ret,i);i+=p.data.length;p=p.next}return ret};return BufferList}()},{"safe-buffer":46}],42:[function(require,module,exports){"use strict";var processNextTick=require("process-nextick-args");function destroy(err,cb){var _this=this;var readableDestroyed=this._readableState&&this._readableState.destroyed;var writableDestroyed=this._writableState&&this._writableState.destroyed;if(readableDestroyed||writableDestroyed){if(cb){cb(err)}else if(err&&(!this._writableState||!this._writableState.errorEmitted)){processNextTick(emitErrorNT,this,err)}return}if(this._readableState){this._readableState.destroyed=true}if(this._writableState){this._writableState.destroyed=true}this._destroy(err||null,function(err){if(!cb&&err){processNextTick(emitErrorNT,_this,err);if(_this._writableState){_this._writableState.errorEmitted=true}}else if(cb){cb(err)}})}function undestroy(){if(this._readableState){this._readableState.destroyed=false;this._readableState.reading=false;this._readableState.ended=false;this._readableState.endEmitted=false}if(this._writableState){this._writableState.destroyed=false;this._writableState.ended=false;this._writableState.ending=false;this._writableState.finished=false;this._writableState.errorEmitted=false}}function emitErrorNT(self,err){self.emit("error",err)}module.exports={destroy:destroy,undestroy:undestroy}},{"process-nextick-args":29}],43:[function(require,module,exports){module.exports=require("events").EventEmitter},{events:16}],44:[function(require,module,exports){exports=module.exports=require("./lib/_stream_readable.js");exports.Stream=exports;exports.Readable=exports;exports.Writable=require("./lib/_stream_writable.js");exports.Duplex=require("./lib/_stream_duplex.js");exports.Transform=require("./lib/_stream_transform.js");exports.PassThrough=require("./lib/_stream_passthrough.js")},{"./lib/_stream_duplex.js":36,"./lib/_stream_passthrough.js":37,"./lib/_stream_readable.js":38,"./lib/_stream_transform.js":39,"./lib/_stream_writable.js":40}],45:[function(require,module,exports){"use strict";function ReInterval(callback,interval,args){var self=this;this._callback=callback;this._args=args;this._interval=setInterval(callback,interval,this._args);this.reschedule=function(interval){if(!interval)interval=self._interval;if(self._interval)clearInterval(self._interval);self._interval=setInterval(self._callback,interval,self._args)};this.clear=function(){if(self._interval){clearInterval(self._interval);self._interval=undefined}};this.destroy=function(){if(self._interval){clearInterval(self._interval)}self._callback=undefined;self._interval=undefined;self._args=undefined}}function reInterval(){if(typeof arguments[0]!=="function")throw new Error("callback needed");if(typeof arguments[1]!=="number")throw new Error("interval needed");var args;if(arguments.length>0){args=new Array(arguments.length-2);for(var i=0;i<args.length;i++){args[i]=arguments[i+2]}}return new ReInterval(arguments[0],arguments[1],args)}module.exports=reInterval},{}],46:[function(require,module,exports){var buffer=require("buffer");var Buffer=buffer.Buffer;function copyProps(src,dst){for(var key in src){dst[key]=src[key]}}if(Buffer.from&&Buffer.alloc&&Buffer.allocUnsafe&&Buffer.allocUnsafeSlow){module.exports=buffer}else{copyProps(buffer,exports);exports.Buffer=SafeBuffer}function SafeBuffer(arg,encodingOrOffset,length){return Buffer(arg,encodingOrOffset,length)}copyProps(Buffer,SafeBuffer);SafeBuffer.from=function(arg,encodingOrOffset,length){if(typeof arg==="number"){throw new TypeError("Argument must not be a number")}return Buffer(arg,encodingOrOffset,length)};SafeBuffer.alloc=function(size,fill,encoding){if(typeof size!=="number"){throw new TypeError("Argument must be a number")}var buf=Buffer(size);if(fill!==undefined){if(typeof encoding==="string"){buf.fill(fill,encoding)}else{buf.fill(fill)}}else{buf.fill(0)}return buf};SafeBuffer.allocUnsafe=function(size){if(typeof size!=="number"){throw new TypeError("Argument must be a number")}return Buffer(size)};SafeBuffer.allocUnsafeSlow=function(size){if(typeof size!=="number"){throw new TypeError("Argument must be a number")}return buffer.SlowBuffer(size)}},{buffer:12}],47:[function(require,module,exports){module.exports=shift;function shift(stream){var rs=stream._readableState;if(!rs)return null;return rs.objectMode?stream.read():stream.read(getStateLength(rs))}function getStateLength(state){if(state.buffer.length){if(state.buffer.head){return state.buffer.head.data.length}return state.buffer[0].length}return state.length}},{}],48:[function(require,module,exports){"use strict";var Buffer=require("safe-buffer").Buffer;var isEncoding=Buffer.isEncoding||function(encoding){encoding=""+encoding;switch(encoding&&encoding.toLowerCase()){case"hex":case"utf8":case"utf-8":case"ascii":case"binary":case"base64":case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":case"raw":return true;default:return false}};function _normalizeEncoding(enc){if(!enc)return"utf8";var retried;while(true){switch(enc){case"utf8":case"utf-8":return"utf8";case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return"utf16le";case"latin1":case"binary":return"latin1";case"base64":case"ascii":case"hex":return enc;default:if(retried)return;enc=(""+enc).toLowerCase();retried=true}}}function normalizeEncoding(enc){var nenc=_normalizeEncoding(enc);if(typeof nenc!=="string"&&(Buffer.isEncoding===isEncoding||!isEncoding(enc)))throw new Error("Unknown encoding: "+enc);return nenc||enc}exports.StringDecoder=StringDecoder;function StringDecoder(encoding){this.encoding=normalizeEncoding(encoding);var nb;switch(this.encoding){case"utf16le":this.text=utf16Text;this.end=utf16End;nb=4;break;case"utf8":this.fillLast=utf8FillLast;nb=4;break;case"base64":this.text=base64Text;this.end=base64End;nb=3;break;default:this.write=simpleWrite;this.end=simpleEnd;return}this.lastNeed=0;this.lastTotal=0;this.lastChar=Buffer.allocUnsafe(nb)}StringDecoder.prototype.write=function(buf){if(buf.length===0)return"";var r;var i;if(this.lastNeed){r=this.fillLast(buf);if(r===undefined)return"";i=this.lastNeed;this.lastNeed=0}else{i=0}if(i<buf.length)return r?r+this.text(buf,i):this.text(buf,i);return r||""};StringDecoder.prototype.end=utf8End;StringDecoder.prototype.text=utf8Text;StringDecoder.prototype.fillLast=function(buf){if(this.lastNeed<=buf.length){buf.copy(this.lastChar,this.lastTotal-this.lastNeed,0,this.lastNeed);return this.lastChar.toString(this.encoding,0,this.lastTotal)}buf.copy(this.lastChar,this.lastTotal-this.lastNeed,0,buf.length);this.lastNeed-=buf.length};function utf8CheckByte(byte){if(byte<=127)return 0;else if(byte>>5===6)return 2;else if(byte>>4===14)return 3;else if(byte>>3===30)return 4;return-1}function utf8CheckIncomplete(self,buf,i){var j=buf.length-1;if(j<i)return 0;var nb=utf8CheckByte(buf[j]);if(nb>=0){if(nb>0)self.lastNeed=nb-1;return nb}if(--j<i)return 0;nb=utf8CheckByte(buf[j]);if(nb>=0){if(nb>0)self.lastNeed=nb-2;return nb}if(--j<i)return 0;nb=utf8CheckByte(buf[j]);if(nb>=0){if(nb>0){if(nb===2)nb=0;else self.lastNeed=nb-3}return nb}return 0}function utf8CheckExtraBytes(self,buf,p){if((buf[0]&192)!==128){self.lastNeed=0;return"�".repeat(p)}if(self.lastNeed>1&&buf.length>1){if((buf[1]&192)!==128){self.lastNeed=1;return"�".repeat(p+1)}if(self.lastNeed>2&&buf.length>2){if((buf[2]&192)!==128){self.lastNeed=2;return"�".repeat(p+2)}}}}function utf8FillLast(buf){var p=this.lastTotal-this.lastNeed;var r=utf8CheckExtraBytes(this,buf,p);if(r!==undefined)return r;if(this.lastNeed<=buf.length){buf.copy(this.lastChar,p,0,this.lastNeed);return this.lastChar.toString(this.encoding,0,this.lastTotal)}buf.copy(this.lastChar,p,0,buf.length);this.lastNeed-=buf.length}function utf8Text(buf,i){var total=utf8CheckIncomplete(this,buf,i);if(!this.lastNeed)return buf.toString("utf8",i);this.lastTotal=total;var end=buf.length-(total-this.lastNeed);buf.copy(this.lastChar,0,end);return buf.toString("utf8",i,end)}function utf8End(buf){var r=buf&&buf.length?this.write(buf):"";if(this.lastNeed)return r+"�".repeat(this.lastTotal-this.lastNeed);return r}function utf16Text(buf,i){if((buf.length-i)%2===0){var r=buf.toString("utf16le",i);if(r){var c=r.charCodeAt(r.length-1);if(c>=55296&&c<=56319){this.lastNeed=2;this.lastTotal=4;this.lastChar[0]=buf[buf.length-2];this.lastChar[1]=buf[buf.length-1];return r.slice(0,-1)}}return r}this.lastNeed=1;this.lastTotal=2;this.lastChar[0]=buf[buf.length-1];return buf.toString("utf16le",i,buf.length-1)}function utf16End(buf){var r=buf&&buf.length?this.write(buf):"";if(this.lastNeed){var end=this.lastTotal-this.lastNeed;return r+this.lastChar.toString("utf16le",0,end)}return r}function base64Text(buf,i){var n=(buf.length-i)%3;if(n===0)return buf.toString("base64",i);this.lastNeed=3-n;this.lastTotal=3;if(n===1){this.lastChar[0]=buf[buf.length-1]}else{this.lastChar[0]=buf[buf.length-2];this.lastChar[1]=buf[buf.length-1]}return buf.toString("base64",i,buf.length-n)}function base64End(buf){var r=buf&&buf.length?this.write(buf):"";if(this.lastNeed)return r+this.lastChar.toString("base64",0,3-this.lastNeed);return r}function simpleWrite(buf){return buf.toString(this.encoding)}function simpleEnd(buf){return buf&&buf.length?this.write(buf):""}},{"safe-buffer":46}],49:[function(require,module,exports){"use strict";var punycode=require("punycode");var util=require("./util");exports.parse=urlParse;exports.resolve=urlResolve;exports.resolveObject=urlResolveObject;exports.format=urlFormat;exports.Url=Url;function Url(){this.protocol=null;this.slashes=null;this.auth=null;this.host=null;this.port=null;this.hostname=null;this.hash=null;this.search=null;this.query=null;this.pathname=null;this.path=null;this.href=null}var protocolPattern=/^([a-z0-9.+-]+:)/i,portPattern=/:[0-9]*$/,simplePathPattern=/^(\/\/?(?!\/)[^\?\s]*)(\?[^\s]*)?$/,delims=["<",">",'"',"`"," ","\r","\n","\t"],unwise=["{","}","|","\\","^","`"].concat(delims),autoEscape=["'"].concat(unwise),nonHostChars=["%","/","?",";","#"].concat(autoEscape),hostEndingChars=["/","?","#"],hostnameMaxLen=255,hostnamePartPattern=/^[+a-z0-9A-Z_-]{0,63}$/,hostnamePartStart=/^([+a-z0-9A-Z_-]{0,63})(.*)$/,unsafeProtocol={javascript:true,"javascript:":true},hostlessProtocol={javascript:true,"javascript:":true},slashedProtocol={http:true,https:true,ftp:true,gopher:true,file:true,"http:":true,"https:":true,"ftp:":true,"gopher:":true,"file:":true},querystring=require("querystring");function urlParse(url,parseQueryString,slashesDenoteHost){if(url&&util.isObject(url)&&url instanceof Url)return url;var u=new Url;u.parse(url,parseQueryString,slashesDenoteHost);return u}Url.prototype.parse=function(url,parseQueryString,slashesDenoteHost){if(!util.isString(url)){throw new TypeError("Parameter 'url' must be a string, not "+typeof url)}var queryIndex=url.indexOf("?"),splitter=queryIndex!==-1&&queryIndex<url.indexOf("#")?"?":"#",uSplit=url.split(splitter),slashRegex=/\\/g;uSplit[0]=uSplit[0].replace(slashRegex,"/");url=uSplit.join(splitter);var rest=url;rest=rest.trim();if(!slashesDenoteHost&&url.split("#").length===1){var simplePath=simplePathPattern.exec(rest);if(simplePath){this.path=rest;this.href=rest;this.pathname=simplePath[1];if(simplePath[2]){this.search=simplePath[2];if(parseQueryString){this.query=querystring.parse(this.search.substr(1))}else{this.query=this.search.substr(1)}}else if(parseQueryString){this.search="";this.query={}}return this}}var proto=protocolPattern.exec(rest);if(proto){proto=proto[0];var lowerProto=proto.toLowerCase();this.protocol=lowerProto;rest=rest.substr(proto.length)}if(slashesDenoteHost||proto||rest.match(/^\/\/[^@\/]+@[^@\/]+/)){var slashes=rest.substr(0,2)==="//";if(slashes&&!(proto&&hostlessProtocol[proto])){rest=rest.substr(2);this.slashes=true}}if(!hostlessProtocol[proto]&&(slashes||proto&&!slashedProtocol[proto])){var hostEnd=-1;for(var i=0;i<hostEndingChars.length;i++){var hec=rest.indexOf(hostEndingChars[i]);if(hec!==-1&&(hostEnd===-1||hec<hostEnd))hostEnd=hec}var auth,atSign;if(hostEnd===-1){atSign=rest.lastIndexOf("@")}else{atSign=rest.lastIndexOf("@",hostEnd)}if(atSign!==-1){auth=rest.slice(0,atSign);rest=rest.slice(atSign+1);this.auth=decodeURIComponent(auth)}hostEnd=-1;for(var i=0;i<nonHostChars.length;i++){var hec=rest.indexOf(nonHostChars[i]);if(hec!==-1&&(hostEnd===-1||hec<hostEnd))hostEnd=hec}if(hostEnd===-1)hostEnd=rest.length;this.host=rest.slice(0,hostEnd);rest=rest.slice(hostEnd);this.parseHost();this.hostname=this.hostname||"";var ipv6Hostname=this.hostname[0]==="["&&this.hostname[this.hostname.length-1]==="]";if(!ipv6Hostname){var hostparts=this.hostname.split(/\./);for(var i=0,l=hostparts.length;i<l;i++){var part=hostparts[i];if(!part)continue;if(!part.match(hostnamePartPattern)){var newpart="";for(var j=0,k=part.length;j<k;j++){if(part.charCodeAt(j)>127){newpart+="x"}else{newpart+=part[j]}}if(!newpart.match(hostnamePartPattern)){var validParts=hostparts.slice(0,i);var notHost=hostparts.slice(i+1);var bit=part.match(hostnamePartStart);if(bit){validParts.push(bit[1]);notHost.unshift(bit[2])}if(notHost.length){rest="/"+notHost.join(".")+rest}this.hostname=validParts.join(".");break}}}}if(this.hostname.length>hostnameMaxLen){this.hostname=""}else{this.hostname=this.hostname.toLowerCase()}if(!ipv6Hostname){this.hostname=punycode.toASCII(this.hostname)}var p=this.port?":"+this.port:"";var h=this.hostname||"";this.host=h+p;this.href+=this.host;if(ipv6Hostname){this.hostname=this.hostname.substr(1,this.hostname.length-2);if(rest[0]!=="/"){rest="/"+rest}}}if(!unsafeProtocol[lowerProto]){for(var i=0,l=autoEscape.length;i<l;i++){var ae=autoEscape[i];if(rest.indexOf(ae)===-1)continue;var esc=encodeURIComponent(ae);if(esc===ae){esc=escape(ae)}rest=rest.split(ae).join(esc)}}var hash=rest.indexOf("#");if(hash!==-1){this.hash=rest.substr(hash);rest=rest.slice(0,hash)}var qm=rest.indexOf("?");if(qm!==-1){this.search=rest.substr(qm);this.query=rest.substr(qm+1);if(parseQueryString){this.query=querystring.parse(this.query)}rest=rest.slice(0,qm)}else if(parseQueryString){this.search="";this.query={}}if(rest)this.pathname=rest;if(slashedProtocol[lowerProto]&&this.hostname&&!this.pathname){this.pathname="/"}if(this.pathname||this.search){var p=this.pathname||"";var s=this.search||"";this.path=p+s}this.href=this.format();return this};function urlFormat(obj){if(util.isString(obj))obj=urlParse(obj);if(!(obj instanceof Url))return Url.prototype.format.call(obj);return obj.format()}Url.prototype.format=function(){var auth=this.auth||"";if(auth){auth=encodeURIComponent(auth);auth=auth.replace(/%3A/i,":");auth+="@"}var protocol=this.protocol||"",pathname=this.pathname||"",hash=this.hash||"",host=false,query="";if(this.host){host=auth+this.host}else if(this.hostname){host=auth+(this.hostname.indexOf(":")===-1?this.hostname:"["+this.hostname+"]");if(this.port){host+=":"+this.port}}if(this.query&&util.isObject(this.query)&&Object.keys(this.query).length){query=querystring.stringify(this.query)}var search=this.search||query&&"?"+query||"";if(protocol&&protocol.substr(-1)!==":")protocol+=":";if(this.slashes||(!protocol||slashedProtocol[protocol])&&host!==false){host="//"+(host||"");if(pathname&&pathname.charAt(0)!=="/")pathname="/"+pathname}else if(!host){host=""}if(hash&&hash.charAt(0)!=="#")hash="#"+hash;if(search&&search.charAt(0)!=="?")search="?"+search;pathname=pathname.replace(/[?#]/g,function(match){return encodeURIComponent(match)});search=search.replace("#","%23");return protocol+host+pathname+search+hash};function urlResolve(source,relative){return urlParse(source,false,true).resolve(relative)}Url.prototype.resolve=function(relative){return this.resolveObject(urlParse(relative,false,true)).format()};function urlResolveObject(source,relative){if(!source)return relative;return urlParse(source,false,true).resolveObject(relative)}Url.prototype.resolveObject=function(relative){if(util.isString(relative)){var rel=new Url;rel.parse(relative,false,true);relative=rel}var result=new Url;var tkeys=Object.keys(this);for(var tk=0;tk<tkeys.length;tk++){var tkey=tkeys[tk];result[tkey]=this[tkey]}result.hash=relative.hash;if(relative.href===""){result.href=result.format();return result}if(relative.slashes&&!relative.protocol){var rkeys=Object.keys(relative);for(var rk=0;rk<rkeys.length;rk++){var rkey=rkeys[rk];if(rkey!=="protocol")result[rkey]=relative[rkey]}if(slashedProtocol[result.protocol]&&result.hostname&&!result.pathname){result.path=result.pathname="/"}result.href=result.format();return result}if(relative.protocol&&relative.protocol!==result.protocol){if(!slashedProtocol[relative.protocol]){var keys=Object.keys(relative);for(var v=0;v<keys.length;v++){var k=keys[v];result[k]=relative[k]}result.href=result.format();return result}result.protocol=relative.protocol;if(!relative.host&&!hostlessProtocol[relative.protocol]){var relPath=(relative.pathname||"").split("/");while(relPath.length&&!(relative.host=relPath.shift()));if(!relative.host)relative.host="";if(!relative.hostname)relative.hostname="";if(relPath[0]!=="")relPath.unshift("");if(relPath.length<2)relPath.unshift("");result.pathname=relPath.join("/")}else{result.pathname=relative.pathname}result.search=relative.search;result.query=relative.query;result.host=relative.host||"";result.auth=relative.auth;result.hostname=relative.hostname||relative.host;result.port=relative.port;if(result.pathname||result.search){var p=result.pathname||"";var s=result.search||"";result.path=p+s}result.slashes=result.slashes||relative.slashes;result.href=result.format();return result}var isSourceAbs=result.pathname&&result.pathname.charAt(0)==="/",isRelAbs=relative.host||relative.pathname&&relative.pathname.charAt(0)==="/",mustEndAbs=isRelAbs||isSourceAbs||result.host&&relative.pathname,removeAllDots=mustEndAbs,srcPath=result.pathname&&result.pathname.split("/")||[],relPath=relative.pathname&&relative.pathname.split("/")||[],psychotic=result.protocol&&!slashedProtocol[result.protocol];if(psychotic){result.hostname="";result.port=null;if(result.host){if(srcPath[0]==="")srcPath[0]=result.host;else srcPath.unshift(result.host)}result.host="";if(relative.protocol){relative.hostname=null;relative.port=null;if(relative.host){if(relPath[0]==="")relPath[0]=relative.host;else relPath.unshift(relative.host)}relative.host=null}mustEndAbs=mustEndAbs&&(relPath[0]===""||srcPath[0]==="")}if(isRelAbs){result.host=relative.host||relative.host===""?relative.host:result.host;result.hostname=relative.hostname||relative.hostname===""?relative.hostname:result.hostname;result.search=relative.search;result.query=relative.query;srcPath=relPath}else if(relPath.length){if(!srcPath)srcPath=[];srcPath.pop();srcPath=srcPath.concat(relPath);result.search=relative.search;result.query=relative.query}else if(!util.isNullOrUndefined(relative.search)){if(psychotic){result.hostname=result.host=srcPath.shift();var authInHost=result.host&&result.host.indexOf("@")>0?result.host.split("@"):false;if(authInHost){result.auth=authInHost.shift();result.host=result.hostname=authInHost.shift()}}result.search=relative.search;result.query=relative.query;if(!util.isNull(result.pathname)||!util.isNull(result.search)){result.path=(result.pathname?result.pathname:"")+(result.search?result.search:"")}result.href=result.format();return result}if(!srcPath.length){result.pathname=null;if(result.search){result.path="/"+result.search}else{result.path=null}result.href=result.format();return result}var last=srcPath.slice(-1)[0];var hasTrailingSlash=(result.host||relative.host||srcPath.length>1)&&(last==="."||last==="..")||last==="";var up=0;for(var i=srcPath.length;i>=0;i--){last=srcPath[i];if(last==="."){srcPath.splice(i,1)}else if(last===".."){srcPath.splice(i,1);up++}else if(up){srcPath.splice(i,1);up--}}if(!mustEndAbs&&!removeAllDots){for(;up--;up){srcPath.unshift("..")}}if(mustEndAbs&&srcPath[0]!==""&&(!srcPath[0]||srcPath[0].charAt(0)!=="/")){srcPath.unshift("")}if(hasTrailingSlash&&srcPath.join("/").substr(-1)!=="/"){srcPath.push("")}var isAbsolute=srcPath[0]===""||srcPath[0]&&srcPath[0].charAt(0)==="/";if(psychotic){result.hostname=result.host=isAbsolute?"":srcPath.length?srcPath.shift():"";var authInHost=result.host&&result.host.indexOf("@")>0?result.host.split("@"):false;if(authInHost){result.auth=authInHost.shift();result.host=result.hostname=authInHost.shift()}}mustEndAbs=mustEndAbs||result.host&&srcPath.length;if(mustEndAbs&&!isAbsolute){srcPath.unshift("")}if(!srcPath.length){result.pathname=null;result.path=null}else{result.pathname=srcPath.join("/")}if(!util.isNull(result.pathname)||!util.isNull(result.search)){result.path=(result.pathname?result.pathname:"")+(result.search?result.search:"")}result.auth=relative.auth||result.auth;result.slashes=result.slashes||relative.slashes;result.href=result.format();return result};Url.prototype.parseHost=function(){var host=this.host;var port=portPattern.exec(host);if(port){port=port[0];if(port!==":"){this.port=port.substr(1)}host=host.substr(0,host.length-port.length)}if(host)this.hostname=host}},{"./util":50,punycode:31,querystring:34}],50:[function(require,module,exports){"use strict";module.exports={isString:function(arg){return typeof arg==="string"},isObject:function(arg){return typeof arg==="object"&&arg!==null},isNull:function(arg){return arg===null},isNullOrUndefined:function(arg){return arg==null}}},{}],51:[function(require,module,exports){(function(global){module.exports=deprecate;function deprecate(fn,msg){if(config("noDeprecation")){return fn}var warned=false;function deprecated(){if(!warned){if(config("throwDeprecation")){throw new Error(msg)}else if(config("traceDeprecation")){console.trace(msg)}else{console.warn(msg)}warned=true}return fn.apply(this,arguments)}return deprecated}function config(name){try{if(!global.localStorage)return false}catch(_){return false}var val=global.localStorage[name];if(null==val)return false;return String(val).toLowerCase()==="true"}}).call(this,typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{}],52:[function(require,module,exports){arguments[4][18][0].apply(exports,arguments)},{dup:18}],53:[function(require,module,exports){module.exports=function isBuffer(arg){return arg&&typeof arg==="object"&&typeof arg.copy==="function"&&typeof arg.fill==="function"&&typeof arg.readUInt8==="function"}},{}],54:[function(require,module,exports){(function(process,global){var formatRegExp=/%[sdj%]/g;exports.format=function(f){if(!isString(f)){var objects=[];for(var i=0;i<arguments.length;i++){objects.push(inspect(arguments[i]))}return objects.join(" ")}var i=1;var args=arguments;var len=args.length;var str=String(f).replace(formatRegExp,function(x){if(x==="%%")return"%";if(i>=len)return x;switch(x){case"%s":return String(args[i++]);case"%d":return Number(args[i++]);case"%j":try{return JSON.stringify(args[i++])}catch(_){return"[Circular]"}default:return x}});for(var x=args[i];i<len;x=args[++i]){if(isNull(x)||!isObject(x)){str+=" "+x}else{str+=" "+inspect(x)}}return str};exports.deprecate=function(fn,msg){if(isUndefined(global.process)){return function(){return exports.deprecate(fn,msg).apply(this,arguments)}}if(process.noDeprecation===true){return fn}var warned=false;function deprecated(){if(!warned){if(process.throwDeprecation){throw new Error(msg)}else if(process.traceDeprecation){console.trace(msg)}else{console.error(msg)}warned=true}return fn.apply(this,arguments)}return deprecated};var debugs={};var debugEnviron;exports.debuglog=function(set){if(isUndefined(debugEnviron))debugEnviron=process.env.NODE_DEBUG||"";set=set.toUpperCase();if(!debugs[set]){if(new RegExp("\\b"+set+"\\b","i").test(debugEnviron)){var pid=process.pid;debugs[set]=function(){var msg=exports.format.apply(exports,arguments);console.error("%s %d: %s",set,pid,msg)}}else{debugs[set]=function(){}}}return debugs[set]};function inspect(obj,opts){var ctx={seen:[],stylize:stylizeNoColor};if(arguments.length>=3)ctx.depth=arguments[2];if(arguments.length>=4)ctx.colors=arguments[3];if(isBoolean(opts)){ctx.showHidden=opts}else if(opts){exports._extend(ctx,opts)}if(isUndefined(ctx.showHidden))ctx.showHidden=false;if(isUndefined(ctx.depth))ctx.depth=2;if(isUndefined(ctx.colors))ctx.colors=false;if(isUndefined(ctx.customInspect))ctx.customInspect=true;if(ctx.colors)ctx.stylize=stylizeWithColor;return formatValue(ctx,obj,ctx.depth)}exports.inspect=inspect;inspect.colors={bold:[1,22],italic:[3,23],underline:[4,24],inverse:[7,27],white:[37,39],grey:[90,39],black:[30,39],blue:[34,39],cyan:[36,39],green:[32,39],magenta:[35,39],red:[31,39],yellow:[33,39]};inspect.styles={special:"cyan",number:"yellow",boolean:"yellow",undefined:"grey",null:"bold",string:"green",date:"magenta",regexp:"red"};function stylizeWithColor(str,styleType){var style=inspect.styles[styleType];if(style){return"["+inspect.colors[style][0]+"m"+str+"["+inspect.colors[style][1]+"m"}else{return str}}function stylizeNoColor(str,styleType){return str}function arrayToHash(array){var hash={};array.forEach(function(val,idx){hash[val]=true});return hash}function formatValue(ctx,value,recurseTimes){if(ctx.customInspect&&value&&isFunction(value.inspect)&&value.inspect!==exports.inspect&&!(value.constructor&&value.constructor.prototype===value)){var ret=value.inspect(recurseTimes,ctx);if(!isString(ret)){ret=formatValue(ctx,ret,recurseTimes)}return ret}var primitive=formatPrimitive(ctx,value);if(primitive){return primitive}var keys=Object.keys(value);var visibleKeys=arrayToHash(keys);if(ctx.showHidden){keys=Object.getOwnPropertyNames(value)}if(isError(value)&&(keys.indexOf("message")>=0||keys.indexOf("description")>=0)){return formatError(value)}if(keys.length===0){if(isFunction(value)){var name=value.name?": "+value.name:"";return ctx.stylize("[Function"+name+"]","special")}if(isRegExp(value)){return ctx.stylize(RegExp.prototype.toString.call(value),"regexp")}if(isDate(value)){return ctx.stylize(Date.prototype.toString.call(value),"date")}if(isError(value)){return formatError(value)}}var base="",array=false,braces=["{","}"];if(isArray(value)){array=true;braces=["[","]"]}if(isFunction(value)){var n=value.name?": "+value.name:"";base=" [Function"+n+"]"}if(isRegExp(value)){base=" "+RegExp.prototype.toString.call(value)}if(isDate(value)){base=" "+Date.prototype.toUTCString.call(value)}if(isError(value)){base=" "+formatError(value)}if(keys.length===0&&(!array||value.length==0)){return braces[0]+base+braces[1]}if(recurseTimes<0){if(isRegExp(value)){return ctx.stylize(RegExp.prototype.toString.call(value),"regexp")}else{return ctx.stylize("[Object]","special")}}ctx.seen.push(value);var output;if(array){output=formatArray(ctx,value,recurseTimes,visibleKeys,keys)}else{output=keys.map(function(key){return formatProperty(ctx,value,recurseTimes,visibleKeys,key,array)})}ctx.seen.pop();return reduceToSingleString(output,base,braces)}function formatPrimitive(ctx,value){if(isUndefined(value))return ctx.stylize("undefined","undefined");if(isString(value)){var simple="'"+JSON.stringify(value).replace(/^"|"$/g,"").replace(/'/g,"\\'").replace(/\\"/g,'"')+"'";return ctx.stylize(simple,"string")}if(isNumber(value))return ctx.stylize(""+value,"number");if(isBoolean(value))return ctx.stylize(""+value,"boolean");if(isNull(value))return ctx.stylize("null","null")}function formatError(value){return"["+Error.prototype.toString.call(value)+"]"}function formatArray(ctx,value,recurseTimes,visibleKeys,keys){var output=[];for(var i=0,l=value.length;i<l;++i){if(hasOwnProperty(value,String(i))){output.push(formatProperty(ctx,value,recurseTimes,visibleKeys,String(i),true))}else{output.push("")}}keys.forEach(function(key){if(!key.match(/^\d+$/)){output.push(formatProperty(ctx,value,recurseTimes,visibleKeys,key,true))}});return output}function formatProperty(ctx,value,recurseTimes,visibleKeys,key,array){var name,str,desc;desc=Object.getOwnPropertyDescriptor(value,key)||{value:value[key]};if(desc.get){if(desc.set){str=ctx.stylize("[Getter/Setter]","special")}else{str=ctx.stylize("[Getter]","special")}}else{if(desc.set){str=ctx.stylize("[Setter]","special")}}if(!hasOwnProperty(visibleKeys,key)){name="["+key+"]"}if(!str){if(ctx.seen.indexOf(desc.value)<0){if(isNull(recurseTimes)){str=formatValue(ctx,desc.value,null)}else{str=formatValue(ctx,desc.value,recurseTimes-1)}if(str.indexOf("\n")>-1){if(array){str=str.split("\n").map(function(line){return"  "+line}).join("\n").substr(2)}else{str="\n"+str.split("\n").map(function(line){return"   "+line}).join("\n")}}}else{str=ctx.stylize("[Circular]","special")}}if(isUndefined(name)){if(array&&key.match(/^\d+$/)){return str}name=JSON.stringify(""+key);if(name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)){name=name.substr(1,name.length-2);name=ctx.stylize(name,"name")}else{name=name.replace(/'/g,"\\'").replace(/\\"/g,'"').replace(/(^"|"$)/g,"'");name=ctx.stylize(name,"string")}}return name+": "+str}function reduceToSingleString(output,base,braces){var numLinesEst=0;var length=output.reduce(function(prev,cur){numLinesEst++;if(cur.indexOf("\n")>=0)numLinesEst++;return prev+cur.replace(/\u001b\[\d\d?m/g,"").length+1},0);if(length>60){return braces[0]+(base===""?"":base+"\n ")+" "+output.join(",\n  ")+" "+braces[1]}return braces[0]+base+" "+output.join(", ")+" "+braces[1]}function isArray(ar){return Array.isArray(ar)}exports.isArray=isArray;function isBoolean(arg){return typeof arg==="boolean"}exports.isBoolean=isBoolean;function isNull(arg){return arg===null}exports.isNull=isNull;function isNullOrUndefined(arg){return arg==null}exports.isNullOrUndefined=isNullOrUndefined;function isNumber(arg){return typeof arg==="number"}exports.isNumber=isNumber;function isString(arg){return typeof arg==="string"}exports.isString=isString;function isSymbol(arg){return typeof arg==="symbol"}exports.isSymbol=isSymbol;function isUndefined(arg){return arg===void 0}exports.isUndefined=isUndefined;function isRegExp(re){return isObject(re)&&objectToString(re)==="[object RegExp]"}exports.isRegExp=isRegExp;function isObject(arg){return typeof arg==="object"&&arg!==null}exports.isObject=isObject;function isDate(d){return isObject(d)&&objectToString(d)==="[object Date]"}exports.isDate=isDate;function isError(e){return isObject(e)&&(objectToString(e)==="[object Error]"||e instanceof Error)}exports.isError=isError;function isFunction(arg){return typeof arg==="function"}exports.isFunction=isFunction;function isPrimitive(arg){return arg===null||typeof arg==="boolean"||typeof arg==="number"||typeof arg==="string"||typeof arg==="symbol"||typeof arg==="undefined"}exports.isPrimitive=isPrimitive;exports.isBuffer=require("./support/isBuffer");function objectToString(o){return Object.prototype.toString.call(o)}function pad(n){return n<10?"0"+n.toString(10):n.toString(10)}var months=["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];function timestamp(){var d=new Date;var time=[pad(d.getHours()),pad(d.getMinutes()),pad(d.getSeconds())].join(":");return[d.getDate(),months[d.getMonth()],time].join(" ")}exports.log=function(){console.log("%s - %s",timestamp(),exports.format.apply(exports,arguments))};exports.inherits=require("inherits");exports._extend=function(origin,add){if(!add||!isObject(add))return origin;var keys=Object.keys(add);var i=keys.length;while(i--){origin[keys[i]]=add[keys[i]]}return origin};function hasOwnProperty(obj,prop){return Object.prototype.hasOwnProperty.call(obj,prop)}}).call(this,require("_process"),typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{"./support/isBuffer":53,_process:30,inherits:52}],55:[function(require,module,exports){(function(process,global){"use strict";var Transform=require("readable-stream").Transform;var duplexify=require("duplexify");var WS=require("ws");var Buffer=require("safe-buffer").Buffer;module.exports=WebSocketStream;function buildProxy(options,socketWrite,socketEnd){var proxy=new Transform({objectMode:options.objectMode});proxy._write=socketWrite;proxy._flush=socketEnd;proxy._destroy=function(err,cb){var self=this;this.push(null);this.end();process.nextTick(function(){cb(err);self.emit("close")})};return proxy}function WebSocketStream(target,protocols,options){var stream,socket;var isBrowser=process.title==="browser";var isNative=!!global.WebSocket;var socketWrite=isBrowser?socketWriteBrowser:socketWriteNode;if(protocols&&!Array.isArray(protocols)&&"object"===typeof protocols){options=protocols;protocols=null;if(typeof options.protocol==="string"||Array.isArray(options.protocol)){protocols=options.protocol}}if(!options)options={};if(options.objectMode===undefined){options.objectMode=!(options.binary===true||options.binary===undefined)}var proxy=buildProxy(options,socketWrite,socketEnd);if(!options.objectMode){proxy._writev=writev}var bufferSize=options.browserBufferSize||1024*512;var bufferTimeout=options.browserBufferTimeout||1e3;if(typeof target==="object"){socket=target}else{if(isNative&&isBrowser){socket=new WS(target,protocols)}else{socket=new WS(target,protocols,options)}socket.binaryType="arraybuffer"}if(socket.readyState===socket.OPEN){stream=proxy}else{stream=duplexify.obj();socket.onopen=onopen}stream.socket=socket;socket.onclose=onclose;socket.onerror=onerror;socket.onmessage=onmessage;proxy.on("close",destroy);var coerceToBuffer=!options.objectMode;function socketWriteNode(chunk,enc,next){if(socket.readyState!==socket.OPEN){next();return}if(coerceToBuffer&&typeof chunk==="string"){chunk=new Buffer(chunk,"utf8")}socket.send(chunk,next)}function socketWriteBrowser(chunk,enc,next){if(socket.bufferedAmount>bufferSize){setTimeout(socketWriteBrowser,bufferTimeout,chunk,enc,next);return}if(coerceToBuffer&&typeof chunk==="string"){chunk=new Buffer(chunk,"utf8")}try{socket.send(chunk)}catch(err){return next(err)}next()}function socketEnd(done){socket.close();done()}function onopen(){stream.setReadable(proxy);stream.setWritable(proxy);stream.emit("connect")}function onclose(){stream.end();stream.destroy()}function onerror(err){stream.destroy(err)}function onmessage(event){var data=event.data;if(data instanceof ArrayBuffer)data=Buffer.from(data);else data=Buffer.from(data,"utf8");proxy.push(data)}function destroy(){socket.close()}function writev(chunks,cb){var buffers=new Array(chunks.length);for(var i=0;i<chunks.length;i++){if(typeof chunks[i].chunk==="string"){buffers[i]=Buffer.from(chunks[i],"utf8")}else{buffers[i]=chunks[i].chunk}}this._write(Buffer.concat(buffers),"binary",cb)}return stream}}).call(this,require("_process"),typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{_process:30,duplexify:14,"readable-stream":44,"safe-buffer":46,ws:56}],56:[function(require,module,exports){var ws=null;if(typeof WebSocket!=="undefined"){ws=WebSocket}else if(typeof MozWebSocket!=="undefined"){ws=MozWebSocket}else if(typeof window!=="undefined"){ws=window.WebSocket||window.MozWebSocket}module.exports=ws},{}],57:[function(require,module,exports){module.exports=wrappy;function wrappy(fn,cb){if(fn&&cb)return wrappy(fn)(cb);if(typeof fn!=="function")throw new TypeError("need wrapper function");Object.keys(fn).forEach(function(k){wrapper[k]=fn[k]});return wrapper;function wrapper(){var args=new Array(arguments.length);for(var i=0;i<args.length;i++){args[i]=arguments[i]}var ret=fn.apply(this,args);var cb=args[args.length-1];if(typeof ret==="function"&&ret!==cb){Object.keys(cb).forEach(function(k){ret[k]=cb[k]})}return ret}}},{}],58:[function(require,module,exports){module.exports=extend;var hasOwnProperty=Object.prototype.hasOwnProperty;function extend(){var target={};for(var i=0;i<arguments.length;i++){var source=arguments[i];for(var key in source){if(hasOwnProperty.call(source,key)){target[key]=source[key]}}}return target}},{}]},{},[8])(8)});