layui_back/back/ws/sockjs.js

/* sockjs-client v1.4.0 | http://sockjs.org | MIT license */
(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.SockJS = f()
    }
})(function () {
    var define, module, exports;
    return (function () {
        function r(e, n, t) {
            function o(i, f) {
                if (!n[i]) {
                    if (!e[i]) {
                        var c = "function" == typeof require && require;
                        if (!f && c) return c(i, !0);
                        if (u) return u(i, !0);
                        var a = new Error("Cannot find module '" + i + "'");
                        throw a.code = "MODULE_NOT_FOUND", a
                    }
                    var p = n[i] = {exports: {}};
                    e[i][0].call(p.exports, function (r) {
                        var n = e[i][1][r];
                        return o(n || r)
                    }, p, p.exports, r, e, n, t)
                }
                return n[i].exports
            }

            for (var u = "function" == typeof require && require, i = 0; i < t.length; i++) o(t[i]);
            return o
        }

        return r
    })()({
        1: [function (require, module, exports) {
            (function (global) {
                'use strict';

                var transportList = require('./transport-list');

                module.exports = require('./main')(transportList);

// TODO can't get rid of this until all servers do
                if ('_sockjs_onload' in global) {
                    setTimeout(global._sockjs_onload, 1);
                }

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

        }, {"./main": 14, "./transport-list": 16}],
        2: [function (require, module, exports) {
            'use strict';

            var inherits = require('inherits')
                , Event = require('./event')
            ;

            function CloseEvent() {
                Event.call(this);
                this.initEvent('close', false, false);
                this.wasClean = false;
                this.code = 0;
                this.reason = '';
            }

            inherits(CloseEvent, Event);

            module.exports = CloseEvent;

        }, {"./event": 4, "inherits": 57}],
        3: [function (require, module, exports) {
            'use strict';

            var inherits = require('inherits')
                , EventTarget = require('./eventtarget')
            ;

            function EventEmitter() {
                EventTarget.call(this);
            }

            inherits(EventEmitter, EventTarget);

            EventEmitter.prototype.removeAllListeners = function (type) {
                if (type) {
                    delete this._listeners[type];
                } else {
                    this._listeners = {};
                }
            };

            EventEmitter.prototype.once = function (type, listener) {
                var self = this
                    , fired = false;

                function g() {
                    self.removeListener(type, g);

                    if (!fired) {
                        fired = true;
                        listener.apply(this, arguments);
                    }
                }

                this.on(type, g);
            };

            EventEmitter.prototype.emit = function () {
                var type = arguments[0];
                var listeners = this._listeners[type];
                if (!listeners) {
                    return;
                }
                // equivalent of Array.prototype.slice.call(arguments, 1);
                var l = arguments.length;
                var args = new Array(l - 1);
                for (var ai = 1; ai < l; ai++) {
                    args[ai - 1] = arguments[ai];
                }
                for (var i = 0; i < listeners.length; i++) {
                    listeners[i].apply(this, args);
                }
            };

            EventEmitter.prototype.on = EventEmitter.prototype.addListener = EventTarget.prototype.addEventListener;
            EventEmitter.prototype.removeListener = EventTarget.prototype.removeEventListener;

            module.exports.EventEmitter = EventEmitter;

        }, {"./eventtarget": 5, "inherits": 57}],
        4: [function (require, module, exports) {
            'use strict';

            function Event(eventType) {
                this.type = eventType;
            }

            Event.prototype.initEvent = function (eventType, canBubble, cancelable) {
                this.type = eventType;
                this.bubbles = canBubble;
                this.cancelable = cancelable;
                this.timeStamp = +new Date();
                return this;
            };

            Event.prototype.stopPropagation = function () {
            };
            Event.prototype.preventDefault = function () {
            };

            Event.CAPTURING_PHASE = 1;
            Event.AT_TARGET = 2;
            Event.BUBBLING_PHASE = 3;

            module.exports = Event;

        }, {}],
        5: [function (require, module, exports) {
            'use strict';

            /* Simplified implementation of DOM2 EventTarget.
 *   http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget
 */

            function EventTarget() {
                this._listeners = {};
            }

            EventTarget.prototype.addEventListener = function (eventType, listener) {
                if (!(eventType in this._listeners)) {
                    this._listeners[eventType] = [];
                }
                var arr = this._listeners[eventType];
                // #4
                if (arr.indexOf(listener) === -1) {
                    // Make a copy so as not to interfere with a current dispatchEvent.
                    arr = arr.concat([listener]);
                }
                this._listeners[eventType] = arr;
            };

            EventTarget.prototype.removeEventListener = function (eventType, listener) {
                var arr = this._listeners[eventType];
                if (!arr) {
                    return;
                }
                var idx = arr.indexOf(listener);
                if (idx !== -1) {
                    if (arr.length > 1) {
                        // Make a copy so as not to interfere with a current dispatchEvent.
                        this._listeners[eventType] = arr.slice(0, idx).concat(arr.slice(idx + 1));
                    } else {
                        delete this._listeners[eventType];
                    }
                    return;
                }
            };

            EventTarget.prototype.dispatchEvent = function () {
                var event = arguments[0];
                var t = event.type;
                // equivalent of Array.prototype.slice.call(arguments, 0);
                var args = arguments.length === 1 ? [event] : Array.apply(null, arguments);
                // TODO: This doesn't match the real behavior; per spec, onfoo get
                // their place in line from the /first/ time they're set from
                // non-null. Although WebKit bumps it to the end every time it's
                // set.
                if (this['on' + t]) {
                    this['on' + t].apply(this, args);
                }
                if (t in this._listeners) {
                    // Grab a reference to the listeners list. removeEventListener may alter the list.
                    var listeners = this._listeners[t];
                    for (var i = 0; i < listeners.length; i++) {
                        listeners[i].apply(this, args);
                    }
                }
            };

            module.exports = EventTarget;

        }, {}],
        6: [function (require, module, exports) {
            'use strict';

            var inherits = require('inherits')
                , Event = require('./event')
            ;

            function TransportMessageEvent(data) {
                Event.call(this);
                this.initEvent('message', false, false);
                this.data = data;
            }

            inherits(TransportMessageEvent, Event);

            module.exports = TransportMessageEvent;

        }, {"./event": 4, "inherits": 57}],
        7: [function (require, module, exports) {
            'use strict';

            var JSON3 = require('json3')
                , iframeUtils = require('./utils/iframe')
            ;

            function FacadeJS(transport) {
                this._transport = transport;
                transport.on('message', this._transportMessage.bind(this));
                transport.on('close', this._transportClose.bind(this));
            }

            FacadeJS.prototype._transportClose = function (code, reason) {
                iframeUtils.postMessage('c', JSON3.stringify([code, reason]));
            };
            FacadeJS.prototype._transportMessage = function (frame) {
                iframeUtils.postMessage('t', frame);
            };
            FacadeJS.prototype._send = function (data) {
                this._transport.send(data);
            };
            FacadeJS.prototype._close = function () {
                this._transport.close();
                this._transport.removeAllListeners();
            };

            module.exports = FacadeJS;

        }, {"./utils/iframe": 47, "json3": 58}],
        8: [function (require, module, exports) {
            (function (process) {
                'use strict';

                var urlUtils = require('./utils/url')
                    , eventUtils = require('./utils/event')
                    , JSON3 = require('json3')
                    , FacadeJS = require('./facade')
                    , InfoIframeReceiver = require('./info-iframe-receiver')
                    , iframeUtils = require('./utils/iframe')
                    , loc = require('./location')
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:iframe-bootstrap');
                }

                module.exports = function (SockJS, availableTransports) {
                    var transportMap = {};
                    availableTransports.forEach(function (at) {
                        if (at.facadeTransport) {
                            transportMap[at.facadeTransport.transportName] = at.facadeTransport;
                        }
                    });

                    // hard-coded for the info iframe
                    // TODO see if we can make this more dynamic
                    transportMap[InfoIframeReceiver.transportName] = InfoIframeReceiver;
                    var parentOrigin;

                    /* eslint-disable camelcase */
                    SockJS.bootstrap_iframe = function () {
                        /* eslint-enable camelcase */
                        var facade;
                        iframeUtils.currentWindowId = loc.hash.slice(1);
                        var onMessage = function (e) {
                            if (e.source !== parent) {
                                return;
                            }
                            if (typeof parentOrigin === 'undefined') {
                                parentOrigin = e.origin;
                            }
                            if (e.origin !== parentOrigin) {
                                return;
                            }

                            var iframeMessage;
                            try {
                                iframeMessage = JSON3.parse(e.data);
                            } catch (ignored) {
                                debug('bad json', e.data);
                                return;
                            }

                            if (iframeMessage.windowId !== iframeUtils.currentWindowId) {
                                return;
                            }
                            switch (iframeMessage.type) {
                                case 's':
                                    var p;
                                    try {
                                        p = JSON3.parse(iframeMessage.data);
                                    } catch (ignored) {
                                        debug('bad json', iframeMessage.data);
                                        break;
                                    }
                                    var version = p[0];
                                    var transport = p[1];
                                    var transUrl = p[2];
                                    var baseUrl = p[3];
                                    debug(version, transport, transUrl, baseUrl);
                                    // change this to semver logic
                                    if (version !== SockJS.version) {
                                        throw new Error('Incompatible SockJS! Main site uses:' +
                                            ' "' + version + '", the iframe:' +
                                            ' "' + SockJS.version + '".');
                                    }

                                    if (!urlUtils.isOriginEqual(transUrl, loc.href) ||
                                        !urlUtils.isOriginEqual(baseUrl, loc.href)) {
                                        throw new Error('Can\'t connect to different domain from within an ' +
                                            'iframe. (' + loc.href + ', ' + transUrl + ', ' + baseUrl + ')');
                                    }
                                    facade = new FacadeJS(new transportMap[transport](transUrl, baseUrl));
                                    break;
                                case 'm':
                                    facade._send(iframeMessage.data);
                                    break;
                                case 'c':
                                    if (facade) {
                                        facade._close();
                                    }
                                    facade = null;
                                    break;
                            }
                        };

                        eventUtils.attachEvent('message', onMessage);

                        // Start
                        iframeUtils.postMessage('s');
                    };
                };

            }).call(this, {env: {}})

        }, {
            "./facade": 7,
            "./info-iframe-receiver": 10,
            "./location": 13,
            "./utils/event": 46,
            "./utils/iframe": 47,
            "./utils/url": 52,
            "debug": 55,
            "json3": 58
        }],
        9: [function (require, module, exports) {
            (function (process) {
                'use strict';

                var EventEmitter = require('events').EventEmitter
                    , inherits = require('inherits')
                    , JSON3 = require('json3')
                    , objectUtils = require('./utils/object')
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:info-ajax');
                }

                function InfoAjax(url, AjaxObject) {
                    EventEmitter.call(this);

                    var self = this;
                    var t0 = +new Date();
                    this.xo = new AjaxObject('GET', url);

                    this.xo.once('finish', function (status, text) {
                        var info, rtt;
                        if (status === 200) {
                            rtt = (+new Date()) - t0;
                            if (text) {
                                try {
                                    info = JSON3.parse(text);
                                } catch (e) {
                                    debug('bad json', text);
                                }
                            }

                            if (!objectUtils.isObject(info)) {
                                info = {};
                            }
                        }
                        self.emit('finish', info, rtt);
                        self.removeAllListeners();
                    });
                }

                inherits(InfoAjax, EventEmitter);

                InfoAjax.prototype.close = function () {
                    this.removeAllListeners();
                    this.xo.close();
                };

                module.exports = InfoAjax;

            }).call(this, {env: {}})

        }, {"./utils/object": 49, "debug": 55, "events": 3, "inherits": 57, "json3": 58}],
        10: [function (require, module, exports) {
            'use strict';

            var inherits = require('inherits')
                , EventEmitter = require('events').EventEmitter
                , JSON3 = require('json3')
                , XHRLocalObject = require('./transport/sender/xhr-local')
                , InfoAjax = require('./info-ajax')
            ;

            function InfoReceiverIframe(transUrl) {
                var self = this;
                EventEmitter.call(this);

                this.ir = new InfoAjax(transUrl, XHRLocalObject);
                this.ir.once('finish', function (info, rtt) {
                    self.ir = null;
                    self.emit('message', JSON3.stringify([info, rtt]));
                });
            }

            inherits(InfoReceiverIframe, EventEmitter);

            InfoReceiverIframe.transportName = 'iframe-info-receiver';

            InfoReceiverIframe.prototype.close = function () {
                if (this.ir) {
                    this.ir.close();
                    this.ir = null;
                }
                this.removeAllListeners();
            };

            module.exports = InfoReceiverIframe;

        }, {"./info-ajax": 9, "./transport/sender/xhr-local": 37, "events": 3, "inherits": 57, "json3": 58}],
        11: [function (require, module, exports) {
            (function (process, global) {
                'use strict';

                var EventEmitter = require('events').EventEmitter
                    , inherits = require('inherits')
                    , JSON3 = require('json3')
                    , utils = require('./utils/event')
                    , IframeTransport = require('./transport/iframe')
                    , InfoReceiverIframe = require('./info-iframe-receiver')
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:info-iframe');
                }

                function InfoIframe(baseUrl, url) {
                    var self = this;
                    EventEmitter.call(this);

                    var go = function () {
                        var ifr = self.ifr = new IframeTransport(InfoReceiverIframe.transportName, url, baseUrl);

                        ifr.once('message', function (msg) {
                            if (msg) {
                                var d;
                                try {
                                    d = JSON3.parse(msg);
                                } catch (e) {
                                    debug('bad json', msg);
                                    self.emit('finish');
                                    self.close();
                                    return;
                                }

                                var info = d[0], rtt = d[1];
                                self.emit('finish', info, rtt);
                            }
                            self.close();
                        });

                        ifr.once('close', function () {
                            self.emit('finish');
                            self.close();
                        });
                    };

                    // TODO this seems the same as the 'needBody' from transports
                    if (!global.document.body) {
                        utils.attachEvent('load', go);
                    } else {
                        go();
                    }
                }

                inherits(InfoIframe, EventEmitter);

                InfoIframe.enabled = function () {
                    return IframeTransport.enabled();
                };

                InfoIframe.prototype.close = function () {
                    if (this.ifr) {
                        this.ifr.close();
                    }
                    this.removeAllListeners();
                    this.ifr = null;
                };

                module.exports = InfoIframe;

            }).call(this, {env: {}}, typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})

        }, {
            "./info-iframe-receiver": 10,
            "./transport/iframe": 22,
            "./utils/event": 46,
            "debug": 55,
            "events": 3,
            "inherits": 57,
            "json3": 58
        }],
        12: [function (require, module, exports) {
            (function (process) {
                'use strict';

                var EventEmitter = require('events').EventEmitter
                    , inherits = require('inherits')
                    , urlUtils = require('./utils/url')
                    , XDR = require('./transport/sender/xdr')
                    , XHRCors = require('./transport/sender/xhr-cors')
                    , XHRLocal = require('./transport/sender/xhr-local')
                    , XHRFake = require('./transport/sender/xhr-fake')
                    , InfoIframe = require('./info-iframe')
                    , InfoAjax = require('./info-ajax')
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:info-receiver');
                }

                function InfoReceiver(baseUrl, urlInfo) {
                    debug(baseUrl);
                    var self = this;
                    EventEmitter.call(this);

                    setTimeout(function () {
                        self.doXhr(baseUrl, urlInfo);
                    }, 0);
                }

                inherits(InfoReceiver, EventEmitter);

// TODO this is currently ignoring the list of available transports and the whitelist

                InfoReceiver._getReceiver = function (baseUrl, url, urlInfo) {
                    // determine method of CORS support (if needed)
                    if (urlInfo.sameOrigin) {
                        return new InfoAjax(url, XHRLocal);
                    }
                    if (XHRCors.enabled) {
                        return new InfoAjax(url, XHRCors);
                    }
                    if (XDR.enabled && urlInfo.sameScheme) {
                        return new InfoAjax(url, XDR);
                    }
                    if (InfoIframe.enabled()) {
                        return new InfoIframe(baseUrl, url);
                    }
                    return new InfoAjax(url, XHRFake);
                };

                InfoReceiver.prototype.doXhr = function (baseUrl, urlInfo) {
                    var self = this
                        , url = urlUtils.addPath(baseUrl, '/info')
                    ;
                    debug('doXhr', url);

                    this.xo = InfoReceiver._getReceiver(baseUrl, url, urlInfo);

                    this.timeoutRef = setTimeout(function () {
                        debug('timeout');
                        self._cleanup(false);
                        self.emit('finish');
                    }, InfoReceiver.timeout);

                    this.xo.once('finish', function (info, rtt) {
                        debug('finish', info, rtt);
                        self._cleanup(true);
                        self.emit('finish', info, rtt);
                    });
                };

                InfoReceiver.prototype._cleanup = function (wasClean) {
                    debug('_cleanup');
                    clearTimeout(this.timeoutRef);
                    this.timeoutRef = null;
                    if (!wasClean && this.xo) {
                        this.xo.close();
                    }
                    this.xo = null;
                };

                InfoReceiver.prototype.close = function () {
                    debug('close');
                    this.removeAllListeners();
                    this._cleanup(false);
                };

                InfoReceiver.timeout = 8000;

                module.exports = InfoReceiver;

            }).call(this, {env: {}})

        }, {
            "./info-ajax": 9,
            "./info-iframe": 11,
            "./transport/sender/xdr": 34,
            "./transport/sender/xhr-cors": 35,
            "./transport/sender/xhr-fake": 36,
            "./transport/sender/xhr-local": 37,
            "./utils/url": 52,
            "debug": 55,
            "events": 3,
            "inherits": 57
        }],
        13: [function (require, module, exports) {
            (function (global) {
                'use strict';

                module.exports = global.location || {
                    origin: 'http://localhost:80'
                    , protocol: 'http:'
                    , host: 'localhost'
                    , port: 80
                    , href: 'http://localhost/'
                    , hash: ''
                };

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

        }, {}],
        14: [function (require, module, exports) {
            (function (process, global) {
                'use strict';

                require('./shims');

                var URL = require('url-parse')
                    , inherits = require('inherits')
                    , JSON3 = require('json3')
                    , random = require('./utils/random')
                    , escape = require('./utils/escape')
                    , urlUtils = require('./utils/url')
                    , eventUtils = require('./utils/event')
                    , transport = require('./utils/transport')
                    , objectUtils = require('./utils/object')
                    , browser = require('./utils/browser')
                    , log = require('./utils/log')
                    , Event = require('./event/event')
                    , EventTarget = require('./event/eventtarget')
                    , loc = require('./location')
                    , CloseEvent = require('./event/close')
                    , TransportMessageEvent = require('./event/trans-message')
                    , InfoReceiver = require('./info-receiver')
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:main');
                }

                var transports;

// follow constructor steps defined at http://dev.w3.org/html5/websockets/#the-websocket-interface
                function SockJS(url, protocols, options) {
                    if (!(this instanceof SockJS)) {
                        return new SockJS(url, protocols, options);
                    }
                    if (arguments.length < 1) {
                        throw new TypeError("Failed to construct 'SockJS: 1 argument required, but only 0 present");
                    }
                    EventTarget.call(this);

                    this.readyState = SockJS.CONNECTING;
                    this.extensions = '';
                    this.protocol = '';

                    // non-standard extension
                    options = options || {};
                    if (options.protocols_whitelist) {
                        log.warn("'protocols_whitelist' is DEPRECATED. Use 'transports' instead.");
                    }
                    this._transportsWhitelist = options.transports;
                    this._transportOptions = options.transportOptions || {};
                    this._timeout = options.timeout || 0;

                    var sessionId = options.sessionId || 8;
                    if (typeof sessionId === 'function') {
                        this._generateSessionId = sessionId;
                    } else if (typeof sessionId === 'number') {
                        this._generateSessionId = function () {
                            return random.string(sessionId);
                        };
                    } else {
                        throw new TypeError('If sessionId is used in the options, it needs to be a number or a function.');
                    }

                    this._server = options.server || random.numberString(1000);

                    // Step 1 of WS spec - parse and validate the url. Issue #8
                    var parsedUrl = new URL(url);
                    if (!parsedUrl.host || !parsedUrl.protocol) {
                        throw new SyntaxError("The URL '" + url + "' is invalid");
                    } else if (parsedUrl.hash) {
                        throw new SyntaxError('The URL must not contain a fragment');
                    } else if (parsedUrl.protocol !== 'http:' && parsedUrl.protocol !== 'https:') {
                        throw new SyntaxError("The URL's scheme must be either 'http:' or 'https:'. '" + parsedUrl.protocol + "' is not allowed.");
                    }

                    var secure = parsedUrl.protocol === 'https:';
                    // Step 2 - don't allow secure origin with an insecure protocol
                    if (loc.protocol === 'https:' && !secure) {
                        throw new Error('SecurityError: An insecure SockJS connection may not be initiated from a page loaded over HTTPS');
                    }

                    // Step 3 - check port access - no need here
                    // Step 4 - parse protocols argument
                    if (!protocols) {
                        protocols = [];
                    } else if (!Array.isArray(protocols)) {
                        protocols = [protocols];
                    }

                    // Step 5 - check protocols argument
                    var sortedProtocols = protocols.sort();
                    sortedProtocols.forEach(function (proto, i) {
                        if (!proto) {
                            throw new SyntaxError("The protocols entry '" + proto + "' is invalid.");
                        }
                        if (i < (sortedProtocols.length - 1) && proto === sortedProtocols[i + 1]) {
                            throw new SyntaxError("The protocols entry '" + proto + "' is duplicated.");
                        }
                    });

                    // Step 6 - convert origin
                    var o = urlUtils.getOrigin(loc.href);
                    this._origin = o ? o.toLowerCase() : null;

                    // remove the trailing slash
                    parsedUrl.set('pathname', parsedUrl.pathname.replace(/\/+$/, ''));

                    // store the sanitized url
                    this.url = parsedUrl.href;
                    debug('using url', this.url);

                    // Step 7 - start connection in background
                    // obtain server info
                    // http://sockjs.github.io/sockjs-protocol/sockjs-protocol-0.3.3.html#section-26
                    this._urlInfo = {
                        nullOrigin: !browser.hasDomain()
                        , sameOrigin: urlUtils.isOriginEqual(this.url, loc.href)
                        , sameScheme: urlUtils.isSchemeEqual(this.url, loc.href)
                    };

                    this._ir = new InfoReceiver(this.url, this._urlInfo);
                    this._ir.once('finish', this._receiveInfo.bind(this));
                }

                inherits(SockJS, EventTarget);

                function userSetCode(code) {
                    return code === 1000 || (code >= 3000 && code <= 4999);
                }

                SockJS.prototype.close = function (code, reason) {
                    // Step 1
                    if (code && !userSetCode(code)) {
                        throw new Error('InvalidAccessError: Invalid code');
                    }
                    // Step 2.4 states the max is 123 bytes, but we are just checking length
                    if (reason && reason.length > 123) {
                        throw new SyntaxError('reason argument has an invalid length');
                    }

                    // Step 3.1
                    if (this.readyState === SockJS.CLOSING || this.readyState === SockJS.CLOSED) {
                        return;
                    }

                    // TODO look at docs to determine how to set this
                    var wasClean = true;
                    this._close(code || 1000, reason || 'Normal closure', wasClean);
                };

                SockJS.prototype.send = function (data) {
                    // #13 - convert anything non-string to string
                    // TODO this currently turns objects into [object Object]
                    if (typeof data !== 'string') {
                        data = '' + data;
                    }
                    if (this.readyState === SockJS.CONNECTING) {
                        throw new Error('InvalidStateError: The connection has not been established yet');
                    }
                    if (this.readyState !== SockJS.OPEN) {
                        return;
                    }
                    this._transport.send(escape.quote(data));
                };

                SockJS.version = require('./version');

                SockJS.CONNECTING = 0;
                SockJS.OPEN = 1;
                SockJS.CLOSING = 2;
                SockJS.CLOSED = 3;

                SockJS.prototype._receiveInfo = function (info, rtt) {
                    debug('_receiveInfo', rtt);
                    this._ir = null;
                    if (!info) {
                        this._close(1002, 'Cannot connect to server');
                        return;
                    }

                    // establish a round-trip timeout (RTO) based on the
                    // round-trip time (RTT)
                    this._rto = this.countRTO(rtt);
                    // allow server to override url used for the actual transport
                    this._transUrl = info.base_url ? info.base_url : this.url;
                    info = objectUtils.extend(info, this._urlInfo);
                    debug('info', info);
                    // determine list of desired and supported transports
                    var enabledTransports = transports.filterToEnabled(this._transportsWhitelist, info);
                    this._transports = enabledTransports.main;
                    debug(this._transports.length + ' enabled transports');

                    this._connect();
                };

                SockJS.prototype._connect = function () {
                    for (var Transport = this._transports.shift(); Transport; Transport = this._transports.shift()) {
                        debug('attempt', Transport.transportName);
                        if (Transport.needBody) {
                            if (!global.document.body ||
                                (typeof global.document.readyState !== 'undefined' &&
                                    global.document.readyState !== 'complete' &&
                                    global.document.readyState !== 'interactive')) {
                                debug('waiting for body');
                                this._transports.unshift(Transport);
                                eventUtils.attachEvent('load', this._connect.bind(this));
                                return;
                            }
                        }

                        // calculate timeout based on RTO and round trips. Default to 5s
                        var timeoutMs = Math.max(this._timeout, (this._rto * Transport.roundTrips) || 5000);
                        this._transportTimeoutId = setTimeout(this._transportTimeout.bind(this), timeoutMs);
                        debug('using timeout', timeoutMs);

                        var transportUrl = urlUtils.addPath(this._transUrl, '/' + this._server + '/' + this._generateSessionId());
                        var options = this._transportOptions[Transport.transportName];
                        debug('transport url', transportUrl);
                        var transportObj = new Transport(transportUrl, this._transUrl, options);
                        transportObj.on('message', this._transportMessage.bind(this));
                        transportObj.once('close', this._transportClose.bind(this));
                        transportObj.transportName = Transport.transportName;
                        this._transport = transportObj;

                        return;
                    }
                    this._close(2000, 'All transports failed', false);
                };

                SockJS.prototype._transportTimeout = function () {
                    debug('_transportTimeout');
                    if (this.readyState === SockJS.CONNECTING) {
                        if (this._transport) {
                            this._transport.close();
                        }

                        this._transportClose(2007, 'Transport timed out');
                    }
                };

                SockJS.prototype._transportMessage = function (msg) {
                    debug('_transportMessage', msg);
                    var self = this
                        , type = msg.slice(0, 1)
                        , content = msg.slice(1)
                        , payload
                    ;

                    // first check for messages that don't need a payload
                    switch (type) {
                        case 'o':
                            this._open();
                            return;
                        case 'h':
                            this.dispatchEvent(new Event('heartbeat'));
                            debug('heartbeat', this.transport);
                            return;
                    }

                    if (content) {
                        try {
                            payload = JSON3.parse(content);
                        } catch (e) {
                            debug('bad json', content);
                        }
                    }

                    if (typeof payload === 'undefined') {
                        debug('empty payload', content);
                        return;
                    }

                    switch (type) {
                        case 'a':
                            if (Array.isArray(payload)) {
                                payload.forEach(function (p) {
                                    debug('message', self.transport, p);
                                    self.dispatchEvent(new TransportMessageEvent(p));
                                });
                            }
                            break;
                        case 'm':
                            debug('message', this.transport, payload);
                            this.dispatchEvent(new TransportMessageEvent(payload));
                            break;
                        case 'c':
                            if (Array.isArray(payload) && payload.length === 2) {
                                this._close(payload[0], payload[1], true);
                            }
                            break;
                    }
                };

                SockJS.prototype._transportClose = function (code, reason) {
                    debug('_transportClose', this.transport, code, reason);
                    if (this._transport) {
                        this._transport.removeAllListeners();
                        this._transport = null;
                        this.transport = null;
                    }

                    if (!userSetCode(code) && code !== 2000 && this.readyState === SockJS.CONNECTING) {
                        this._connect();
                        return;
                    }

                    this._close(code, reason);
                };

                SockJS.prototype._open = function () {
                    debug('_open', this._transport && this._transport.transportName, this.readyState);
                    if (this.readyState === SockJS.CONNECTING) {
                        if (this._transportTimeoutId) {
                            clearTimeout(this._transportTimeoutId);
                            this._transportTimeoutId = null;
                        }
                        this.readyState = SockJS.OPEN;
                        this.transport = this._transport.transportName;
                        this.dispatchEvent(new Event('open'));
                        debug('connected', this.transport);
                    } else {
                        // The server might have been restarted, and lost track of our
                        // connection.
                        this._close(1006, 'Server lost session');
                    }
                };

                SockJS.prototype._close = function (code, reason, wasClean) {
                    debug('_close', this.transport, code, reason, wasClean, this.readyState);
                    var forceFail = false;

                    if (this._ir) {
                        forceFail = true;
                        this._ir.close();
                        this._ir = null;
                    }
                    if (this._transport) {
                        this._transport.close();
                        this._transport = null;
                        this.transport = null;
                    }

                    if (this.readyState === SockJS.CLOSED) {
                        throw new Error('InvalidStateError: SockJS has already been closed');
                    }

                    this.readyState = SockJS.CLOSING;
                    setTimeout(function () {
                        this.readyState = SockJS.CLOSED;

                        if (forceFail) {
                            this.dispatchEvent(new Event('error'));
                        }

                        var e = new CloseEvent('close');
                        e.wasClean = wasClean || false;
                        e.code = code || 1000;
                        e.reason = reason;

                        this.dispatchEvent(e);
                        this.onmessage = this.onclose = this.onerror = null;
                        debug('disconnected');
                    }.bind(this), 0);
                };

// See: http://www.erg.abdn.ac.uk/~gerrit/dccp/notes/ccid2/rto_estimator/
// and RFC 2988.
                SockJS.prototype.countRTO = function (rtt) {
                    // In a local environment, when using IE8/9 and the `jsonp-polling`
                    // transport the time needed to establish a connection (the time that pass
                    // from the opening of the transport to the call of `_dispatchOpen`) is
                    // around 200msec (the lower bound used in the article above) and this
                    // causes spurious timeouts. For this reason we calculate a value slightly
                    // larger than that used in the article.
                    if (rtt > 100) {
                        return 4 * rtt; // rto > 400msec
                    }
                    return 300 + rtt; // 300msec < rto <= 400msec
                };

                module.exports = function (availableTransports) {
                    transports = transport(availableTransports);
                    require('./iframe-bootstrap')(SockJS, availableTransports);
                    return SockJS;
                };

            }).call(this, {env: {}}, typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})

        }, {
            "./event/close": 2,
            "./event/event": 4,
            "./event/eventtarget": 5,
            "./event/trans-message": 6,
            "./iframe-bootstrap": 8,
            "./info-receiver": 12,
            "./location": 13,
            "./shims": 15,
            "./utils/browser": 44,
            "./utils/escape": 45,
            "./utils/event": 46,
            "./utils/log": 48,
            "./utils/object": 49,
            "./utils/random": 50,
            "./utils/transport": 51,
            "./utils/url": 52,
            "./version": 53,
            "debug": 55,
            "inherits": 57,
            "json3": 58,
            "url-parse": 61
        }],
        15: [function (require, module, exports) {
            /* eslint-disable */
            /* jscs: disable */
            'use strict';

// pulled specific shims from https://github.com/es-shims/es5-shim

            var ArrayPrototype = Array.prototype;
            var ObjectPrototype = Object.prototype;
            var FunctionPrototype = Function.prototype;
            var StringPrototype = String.prototype;
            var array_slice = ArrayPrototype.slice;

            var _toString = ObjectPrototype.toString;
            var isFunction = function (val) {
                return ObjectPrototype.toString.call(val) === '[object Function]';
            };
            var isArray = function isArray(obj) {
                return _toString.call(obj) === '[object Array]';
            };
            var isString = function isString(obj) {
                return _toString.call(obj) === '[object String]';
            };

            var supportsDescriptors = Object.defineProperty && (function () {
                try {
                    Object.defineProperty({}, 'x', {});
                    return true;
                } catch (e) { /* this is ES3 */
                    return false;
                }
            }());

// Define configurable, writable and non-enumerable props
// if they don't exist.
            var defineProperty;
            if (supportsDescriptors) {
                defineProperty = function (object, name, method, forceAssign) {
                    if (!forceAssign && (name in object)) {
                        return;
                    }
                    Object.defineProperty(object, name, {
                        configurable: true,
                        enumerable: false,
                        writable: true,
                        value: method
                    });
                };
            } else {
                defineProperty = function (object, name, method, forceAssign) {
                    if (!forceAssign && (name in object)) {
                        return;
                    }
                    object[name] = method;
                };
            }
            var defineProperties = function (object, map, forceAssign) {
                for (var name in map) {
                    if (ObjectPrototype.hasOwnProperty.call(map, name)) {
                        defineProperty(object, name, map[name], forceAssign);
                    }
                }
            };

            var toObject = function (o) {
                if (o == null) { // this matches both null and undefined
                    throw new TypeError("can't convert " + o + ' to object');
                }
                return Object(o);
            };

//
// Util
// ======
//

// ES5 9.4
// http://es5.github.com/#x9.4
// http://jsperf.com/to-integer

            function toInteger(num) {
                var n = +num;
                if (n !== n) { // isNaN
                    n = 0;
                } else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0)) {
                    n = (n > 0 || -1) * Math.floor(Math.abs(n));
                }
                return n;
            }

            function ToUint32(x) {
                return x >>> 0;
            }

//
// Function
// ========
//

// ES-5 15.3.4.5
// http://es5.github.com/#x15.3.4.5

            function Empty() {
            }

            defineProperties(FunctionPrototype, {
                bind: function bind(that) { // .length is 1
                    // 1. Let Target be the this value.
                    var target = this;
                    // 2. If IsCallable(Target) is false, throw a TypeError exception.
                    if (!isFunction(target)) {
                        throw new TypeError('Function.prototype.bind called on incompatible ' + target);
                    }
                    // 3. Let A be a new (possibly empty) internal list of all of the
                    //   argument values provided after thisArg (arg1, arg2 etc), in order.
                    // XXX slicedArgs will stand in for "A" if used
                    var args = array_slice.call(arguments, 1); // for normal call
                    // 4. Let F be a new native ECMAScript object.
                    // 11. Set the [[Prototype]] internal property of F to the standard
                    //   built-in Function prototype object as specified in 15.3.3.1.
                    // 12. Set the [[Call]] internal property of F as described in
                    //   15.3.4.5.1.
                    // 13. Set the [[Construct]] internal property of F as described in
                    //   15.3.4.5.2.
                    // 14. Set the [[HasInstance]] internal property of F as described in
                    //   15.3.4.5.3.
                    var binder = function () {

                        if (this instanceof bound) {
                            // 15.3.4.5.2 [[Construct]]
                            // When the [[Construct]] internal method of a function object,
                            // F that was created using the bind function is called with a
                            // list of arguments ExtraArgs, the following steps are taken:
                            // 1. Let target be the value of F's [[TargetFunction]]
                            //   internal property.
                            // 2. If target has no [[Construct]] internal method, a
                            //   TypeError exception is thrown.
                            // 3. Let boundArgs be the value of F's [[BoundArgs]] internal
                            //   property.
                            // 4. Let args be a new list containing the same values as the
                            //   list boundArgs in the same order followed by the same
                            //   values as the list ExtraArgs in the same order.
                            // 5. Return the result of calling the [[Construct]] internal
                            //   method of target providing args as the arguments.

                            var result = target.apply(
                                this,
                                args.concat(array_slice.call(arguments))
                            );
                            if (Object(result) === result) {
                                return result;
                            }
                            return this;

                        } else {
                            // 15.3.4.5.1 [[Call]]
                            // When the [[Call]] internal method of a function object, F,
                            // which was created using the bind function is called with a
                            // this value and a list of arguments ExtraArgs, the following
                            // steps are taken:
                            // 1. Let boundArgs be the value of F's [[BoundArgs]] internal
                            //   property.
                            // 2. Let boundThis be the value of F's [[BoundThis]] internal
                            //   property.
                            // 3. Let target be the value of F's [[TargetFunction]] internal
                            //   property.
                            // 4. Let args be a new list containing the same values as the
                            //   list boundArgs in the same order followed by the same
                            //   values as the list ExtraArgs in the same order.
                            // 5. Return the result of calling the [[Call]] internal method
                            //   of target providing boundThis as the this value and
                            //   providing args as the arguments.

                            // equiv: target.call(this, ...boundArgs, ...args)
                            return target.apply(
                                that,
                                args.concat(array_slice.call(arguments))
                            );

                        }

                    };

                    // 15. If the [[Class]] internal property of Target is "Function", then
                    //     a. Let L be the length property of Target minus the length of A.
                    //     b. Set the length own property of F to either 0 or L, whichever is
                    //       larger.
                    // 16. Else set the length own property of F to 0.

                    var boundLength = Math.max(0, target.length - args.length);

                    // 17. Set the attributes of the length own property of F to the values
                    //   specified in 15.3.5.1.
                    var boundArgs = [];
                    for (var i = 0; i < boundLength; i++) {
                        boundArgs.push('$' + i);
                    }

                    // XXX Build a dynamic function with desired amount of arguments is the only
                    // way to set the length property of a function.
                    // In environments where Content Security Policies enabled (Chrome extensions,
                    // for ex.) all use of eval or Function costructor throws an exception.
                    // However in all of these environments Function.prototype.bind exists
                    // and so this code will never be executed.
                    var bound = Function('binder', 'return function (' + boundArgs.join(',') + '){ return binder.apply(this, arguments); }')(binder);

                    if (target.prototype) {
                        Empty.prototype = target.prototype;
                        bound.prototype = new Empty();
                        // Clean up dangling references.
                        Empty.prototype = null;
                    }

                    // TODO
                    // 18. Set the [[Extensible]] internal property of F to true.

                    // TODO
                    // 19. Let thrower be the [[ThrowTypeError]] function Object (13.2.3).
                    // 20. Call the [[DefineOwnProperty]] internal method of F with
                    //   arguments "caller", PropertyDescriptor {[[Get]]: thrower, [[Set]]:
                    //   thrower, [[Enumerable]]: false, [[Configurable]]: false}, and
                    //   false.
                    // 21. Call the [[DefineOwnProperty]] internal method of F with
                    //   arguments "arguments", PropertyDescriptor {[[Get]]: thrower,
                    //   [[Set]]: thrower, [[Enumerable]]: false, [[Configurable]]: false},
                    //   and false.

                    // TODO
                    // NOTE Function objects created using Function.prototype.bind do not
                    // have a prototype property or the [[Code]], [[FormalParameters]], and
                    // [[Scope]] internal properties.
                    // XXX can't delete prototype in pure-js.

                    // 22. Return F.
                    return bound;
                }
            });

//
// Array
// =====
//

// ES5 15.4.3.2
// http://es5.github.com/#x15.4.3.2
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray
            defineProperties(Array, {isArray: isArray});


            var boxedString = Object('a');
            var splitString = boxedString[0] !== 'a' || !(0 in boxedString);

            var properlyBoxesContext = function properlyBoxed(method) {
                // Check node 0.6.21 bug where third parameter is not boxed
                var properlyBoxesNonStrict = true;
                var properlyBoxesStrict = true;
                if (method) {
                    method.call('foo', function (_, __, context) {
                        if (typeof context !== 'object') {
                            properlyBoxesNonStrict = false;
                        }
                    });

                    method.call([1], function () {
                        'use strict';
                        properlyBoxesStrict = typeof this === 'string';
                    }, 'x');
                }
                return !!method && properlyBoxesNonStrict && properlyBoxesStrict;
            };

            defineProperties(ArrayPrototype, {
                forEach: function forEach(fun /*, thisp*/) {
                    var object = toObject(this),
                        self = splitString && isString(this) ? this.split('') : object,
                        thisp = arguments[1],
                        i = -1,
                        length = self.length >>> 0;

                    // If no callback function or if callback is not a callable function
                    if (!isFunction(fun)) {
                        throw new TypeError(); // TODO message
                    }

                    while (++i < length) {
                        if (i in self) {
                            // Invoke the callback function with call, passing arguments:
                            // context, property value, property key, thisArg object
                            // context
                            fun.call(thisp, self[i], i, object);
                        }
                    }
                }
            }, !properlyBoxesContext(ArrayPrototype.forEach));

// ES5 15.4.4.14
// http://es5.github.com/#x15.4.4.14
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf
            var hasFirefox2IndexOfBug = Array.prototype.indexOf && [0, 1].indexOf(1, 2) !== -1;
            defineProperties(ArrayPrototype, {
                indexOf: function indexOf(sought /*, fromIndex */) {
                    var self = splitString && isString(this) ? this.split('') : toObject(this),
                        length = self.length >>> 0;

                    if (!length) {
                        return -1;
                    }

                    var i = 0;
                    if (arguments.length > 1) {
                        i = toInteger(arguments[1]);
                    }

                    // handle negative indices
                    i = i >= 0 ? i : Math.max(0, length + i);
                    for (; i < length; i++) {
                        if (i in self && self[i] === sought) {
                            return i;
                        }
                    }
                    return -1;
                }
            }, hasFirefox2IndexOfBug);

//
// String
// ======
//

// ES5 15.5.4.14
// http://es5.github.com/#x15.5.4.14

// [bugfix, IE lt 9, firefox 4, Konqueror, Opera, obscure browsers]
// Many browsers do not split properly with regular expressions or they
// do not perform the split correctly under obscure conditions.
// See http://blog.stevenlevithan.com/archives/cross-browser-split
// I've tested in many browsers and this seems to cover the deviant ones:
//    'ab'.split(/(?:ab)*/) should be ["", ""], not [""]
//    '.'.split(/(.?)(.?)/) should be ["", ".", "", ""], not ["", ""]
//    'tesst'.split(/(s)*/) should be ["t", undefined, "e", "s", "t"], not
//       [undefined, "t", undefined, "e", ...]
//    ''.split(/.?/) should be [], not [""]
//    '.'.split(/()()/) should be ["."], not ["", "", "."]

            var string_split = StringPrototype.split;
            if (
                'ab'.split(/(?:ab)*/).length !== 2 ||
                '.'.split(/(.?)(.?)/).length !== 4 ||
                'tesst'.split(/(s)*/)[1] === 't' ||
                'test'.split(/(?:)/, -1).length !== 4 ||
                ''.split(/.?/).length ||
                '.'.split(/()()/).length > 1
            ) {
                (function () {
                    var compliantExecNpcg = /()??/.exec('')[1] === void 0; // NPCG: nonparticipating capturing group

                    StringPrototype.split = function (separator, limit) {
                        var string = this;
                        if (separator === void 0 && limit === 0) {
                            return [];
                        }

                        // If `separator` is not a regex, use native split
                        if (_toString.call(separator) !== '[object RegExp]') {
                            return string_split.call(this, separator, limit);
                        }

                        var output = [],
                            flags = (separator.ignoreCase ? 'i' : '') +
                                (separator.multiline ? 'm' : '') +
                                (separator.extended ? 'x' : '') + // Proposed for ES6
                                (separator.sticky ? 'y' : ''), // Firefox 3+
                            lastLastIndex = 0,
                            // Make `global` and avoid `lastIndex` issues by working with a copy
                            separator2, match, lastIndex, lastLength;
                        separator = new RegExp(separator.source, flags + 'g');
                        string += ''; // Type-convert
                        if (!compliantExecNpcg) {
                            // Doesn't need flags gy, but they don't hurt
                            separator2 = new RegExp('^' + separator.source + '$(?!\\s)', flags);
                        }
                        /* Values for `limit`, per the spec:
             * If undefined: 4294967295 // Math.pow(2, 32) - 1
             * If 0, Infinity, or NaN: 0
             * If positive number: limit = Math.floor(limit); if (limit > 4294967295) limit -= 4294967296;
             * If negative number: 4294967296 - Math.floor(Math.abs(limit))
             * If other: Type-convert, then use the above rules
             */
                        limit = limit === void 0 ?
                            -1 >>> 0 : // Math.pow(2, 32) - 1
                            ToUint32(limit);
                        while (match = separator.exec(string)) {
                            // `separator.lastIndex` is not reliable cross-browser
                            lastIndex = match.index + match[0].length;
                            if (lastIndex > lastLastIndex) {
                                output.push(string.slice(lastLastIndex, match.index));
                                // Fix browsers whose `exec` methods don't consistently return `undefined` for
                                // nonparticipating capturing groups
                                if (!compliantExecNpcg && match.length > 1) {
                                    match[0].replace(separator2, function () {
                                        for (var i = 1; i < arguments.length - 2; i++) {
                                            if (arguments[i] === void 0) {
                                                match[i] = void 0;
                                            }
                                        }
                                    });
                                }
                                if (match.length > 1 && match.index < string.length) {
                                    ArrayPrototype.push.apply(output, match.slice(1));
                                }
                                lastLength = match[0].length;
                                lastLastIndex = lastIndex;
                                if (output.length >= limit) {
                                    break;
                                }
                            }
                            if (separator.lastIndex === match.index) {
                                separator.lastIndex++; // Avoid an infinite loop
                            }
                        }
                        if (lastLastIndex === string.length) {
                            if (lastLength || !separator.test('')) {
                                output.push('');
                            }
                        } else {
                            output.push(string.slice(lastLastIndex));
                        }
                        return output.length > limit ? output.slice(0, limit) : output;
                    };
                }());

// [bugfix, chrome]
// If separator is undefined, then the result array contains just one String,
// which is the this value (converted to a String). If limit is not undefined,
// then the output array is truncated so that it contains no more than limit
// elements.
// "0".split(undefined, 0) -> []
            } else if ('0'.split(void 0, 0).length) {
                StringPrototype.split = function split(separator, limit) {
                    if (separator === void 0 && limit === 0) {
                        return [];
                    }
                    return string_split.call(this, separator, limit);
                };
            }

// ECMA-262, 3rd B.2.3
// Not an ECMAScript standard, although ECMAScript 3rd Edition has a
// non-normative section suggesting uniform semantics and it should be
// normalized across all browsers
// [bugfix, IE lt 9] IE < 9 substr() with negative value not working in IE
            var string_substr = StringPrototype.substr;
            var hasNegativeSubstrBug = ''.substr && '0b'.substr(-1) !== 'b';
            defineProperties(StringPrototype, {
                substr: function substr(start, length) {
                    return string_substr.call(
                        this,
                        start < 0 ? ((start = this.length + start) < 0 ? 0 : start) : start,
                        length
                    );
                }
            }, hasNegativeSubstrBug);

        }, {}],
        16: [function (require, module, exports) {
            'use strict';

            module.exports = [
                // streaming transports
                require('./transport/websocket')
                , require('./transport/xhr-streaming')
                , require('./transport/xdr-streaming')
                , require('./transport/eventsource')
                , require('./transport/lib/iframe-wrap')(require('./transport/eventsource'))

                // polling transports
                , require('./transport/htmlfile')
                , require('./transport/lib/iframe-wrap')(require('./transport/htmlfile'))
                , require('./transport/xhr-polling')
                , require('./transport/xdr-polling')
                , require('./transport/lib/iframe-wrap')(require('./transport/xhr-polling'))
                , require('./transport/jsonp-polling')
            ];

        }, {
            "./transport/eventsource": 20,
            "./transport/htmlfile": 21,
            "./transport/jsonp-polling": 23,
            "./transport/lib/iframe-wrap": 26,
            "./transport/websocket": 38,
            "./transport/xdr-polling": 39,
            "./transport/xdr-streaming": 40,
            "./transport/xhr-polling": 41,
            "./transport/xhr-streaming": 42
        }],
        17: [function (require, module, exports) {
            (function (process, global) {
                'use strict';

                var EventEmitter = require('events').EventEmitter
                    , inherits = require('inherits')
                    , utils = require('../../utils/event')
                    , urlUtils = require('../../utils/url')
                    , XHR = global.XMLHttpRequest
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:browser:xhr');
                }

                function AbstractXHRObject(method, url, payload, opts) {
                    debug(method, url);
                    var self = this;
                    EventEmitter.call(this);

                    setTimeout(function () {
                        self._start(method, url, payload, opts);
                    }, 0);
                }

                inherits(AbstractXHRObject, EventEmitter);

                AbstractXHRObject.prototype._start = function (method, url, payload, opts) {
                    var self = this;

                    try {
                        this.xhr = new XHR();
                    } catch (x) {
                        // intentionally empty
                    }

                    if (!this.xhr) {
                        debug('no xhr');
                        this.emit('finish', 0, 'no xhr support');
                        this._cleanup();
                        return;
                    }

                    // several browsers cache POSTs
                    url = urlUtils.addQuery(url, 't=' + (+new Date()));

                    // Explorer tends to keep connection open, even after the
                    // tab gets closed: http://bugs.jquery.com/ticket/5280
                    this.unloadRef = utils.unloadAdd(function () {
                        debug('unload cleanup');
                        self._cleanup(true);
                    });
                    try {
                        this.xhr.open(method, url, true);
                        if (this.timeout && 'timeout' in this.xhr) {
                            this.xhr.timeout = this.timeout;
                            this.xhr.ontimeout = function () {
                                debug('xhr timeout');
                                self.emit('finish', 0, '');
                                self._cleanup(false);
                            };
                        }
                    } catch (e) {
                        debug('exception', e);
                        // IE raises an exception on wrong port.
                        this.emit('finish', 0, '');
                        this._cleanup(false);
                        return;
                    }

                    if ((!opts || !opts.noCredentials) && AbstractXHRObject.supportsCORS) {
                        debug('withCredentials');
                        // Mozilla docs says https://developer.mozilla.org/en/XMLHttpRequest :
                        // "This never affects same-site requests."

                        this.xhr.withCredentials = true;
                    }
                    if (opts && opts.headers) {
                        for (var key in opts.headers) {
                            this.xhr.setRequestHeader(key, opts.headers[key]);
                        }
                    }

                    this.xhr.onreadystatechange = function () {
                        if (self.xhr) {
                            var x = self.xhr;
                            var text, status;
                            debug('readyState', x.readyState);
                            switch (x.readyState) {
                                case 3:
                                    // IE doesn't like peeking into responseText or status
                                    // on Microsoft.XMLHTTP and readystate=3
                                    try {
                                        status = x.status;
                                        text = x.responseText;
                                    } catch (e) {
                                        // intentionally empty
                                    }
                                    debug('status', status);
                                    // IE returns 1223 for 204: http://bugs.jquery.com/ticket/1450
                                    if (status === 1223) {
                                        status = 204;
                                    }

                                    // IE does return readystate == 3 for 404 answers.
                                    if (status === 200 && text && text.length > 0) {
                                        debug('chunk');
                                        self.emit('chunk', status, text);
                                    }
                                    break;
                                case 4:
                                    status = x.status;
                                    debug('status', status);
                                    // IE returns 1223 for 204: http://bugs.jquery.com/ticket/1450
                                    if (status === 1223) {
                                        status = 204;
                                    }
                                    // IE returns this for a bad port
                                    // http://msdn.microsoft.com/en-us/library/windows/desktop/aa383770(v=vs.85).aspx
                                    if (status === 12005 || status === 12029) {
                                        status = 0;
                                    }

                                    debug('finish', status, x.responseText);
                                    self.emit('finish', status, x.responseText);
                                    self._cleanup(false);
                                    break;
                            }
                        }
                    };

                    try {
                        self.xhr.send(payload);
                    } catch (e) {
                        self.emit('finish', 0, '');
                        self._cleanup(false);
                    }
                };

                AbstractXHRObject.prototype._cleanup = function (abort) {
                    debug('cleanup');
                    if (!this.xhr) {
                        return;
                    }
                    this.removeAllListeners();
                    utils.unloadDel(this.unloadRef);

                    // IE needs this field to be a function
                    this.xhr.onreadystatechange = function () {
                    };
                    if (this.xhr.ontimeout) {
                        this.xhr.ontimeout = null;
                    }

                    if (abort) {
                        try {
                            this.xhr.abort();
                        } catch (x) {
                            // intentionally empty
                        }
                    }
                    this.unloadRef = this.xhr = null;
                };

                AbstractXHRObject.prototype.close = function () {
                    debug('close');
                    this._cleanup(true);
                };

                AbstractXHRObject.enabled = !!XHR;
// override XMLHttpRequest for IE6/7
// obfuscate to avoid firewalls
                var axo = ['Active'].concat('Object').join('X');
                if (!AbstractXHRObject.enabled && (axo in global)) {
                    debug('overriding xmlhttprequest');
                    XHR = function () {
                        try {
                            return new global[axo]('Microsoft.XMLHTTP');
                        } catch (e) {
                            return null;
                        }
                    };
                    AbstractXHRObject.enabled = !!new XHR();
                }

                var cors = false;
                try {
                    cors = 'withCredentials' in new XHR();
                } catch (ignored) {
                    // intentionally empty
                }

                AbstractXHRObject.supportsCORS = cors;

                module.exports = AbstractXHRObject;

            }).call(this, {env: {}}, typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})

        }, {"../../utils/event": 46, "../../utils/url": 52, "debug": 55, "events": 3, "inherits": 57}],
        18: [function (require, module, exports) {
            (function (global) {
                module.exports = global.EventSource;

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

        }, {}],
        19: [function (require, module, exports) {
            (function (global) {
                'use strict';

                var Driver = global.WebSocket || global.MozWebSocket;
                if (Driver) {
                    module.exports = function WebSocketBrowserDriver(url) {
                        return new Driver(url);
                    };
                } else {
                    module.exports = undefined;
                }

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

        }, {}],
        20: [function (require, module, exports) {
            'use strict';

            var inherits = require('inherits')
                , AjaxBasedTransport = require('./lib/ajax-based')
                , EventSourceReceiver = require('./receiver/eventsource')
                , XHRCorsObject = require('./sender/xhr-cors')
                , EventSourceDriver = require('eventsource')
            ;

            function EventSourceTransport(transUrl) {
                if (!EventSourceTransport.enabled()) {
                    throw new Error('Transport created when disabled');
                }

                AjaxBasedTransport.call(this, transUrl, '/eventsource', EventSourceReceiver, XHRCorsObject);
            }

            inherits(EventSourceTransport, AjaxBasedTransport);

            EventSourceTransport.enabled = function () {
                return !!EventSourceDriver;
            };

            EventSourceTransport.transportName = 'eventsource';
            EventSourceTransport.roundTrips = 2;

            module.exports = EventSourceTransport;

        }, {
            "./lib/ajax-based": 24,
            "./receiver/eventsource": 29,
            "./sender/xhr-cors": 35,
            "eventsource": 18,
            "inherits": 57
        }],
        21: [function (require, module, exports) {
            'use strict';

            var inherits = require('inherits')
                , HtmlfileReceiver = require('./receiver/htmlfile')
                , XHRLocalObject = require('./sender/xhr-local')
                , AjaxBasedTransport = require('./lib/ajax-based')
            ;

            function HtmlFileTransport(transUrl) {
                if (!HtmlfileReceiver.enabled) {
                    throw new Error('Transport created when disabled');
                }
                AjaxBasedTransport.call(this, transUrl, '/htmlfile', HtmlfileReceiver, XHRLocalObject);
            }

            inherits(HtmlFileTransport, AjaxBasedTransport);

            HtmlFileTransport.enabled = function (info) {
                return HtmlfileReceiver.enabled && info.sameOrigin;
            };

            HtmlFileTransport.transportName = 'htmlfile';
            HtmlFileTransport.roundTrips = 2;

            module.exports = HtmlFileTransport;

        }, {"./lib/ajax-based": 24, "./receiver/htmlfile": 30, "./sender/xhr-local": 37, "inherits": 57}],
        22: [function (require, module, exports) {
            (function (process) {
                'use strict';

// Few cool transports do work only for same-origin. In order to make
// them work cross-domain we shall use iframe, served from the
// remote domain. New browsers have capabilities to communicate with
// cross domain iframe using postMessage(). In IE it was implemented
// from IE 8+, but of course, IE got some details wrong:
//    http://msdn.microsoft.com/en-us/library/cc197015(v=VS.85).aspx
//    http://stevesouders.com/misc/test-postmessage.php

                var inherits = require('inherits')
                    , JSON3 = require('json3')
                    , EventEmitter = require('events').EventEmitter
                    , version = require('../version')
                    , urlUtils = require('../utils/url')
                    , iframeUtils = require('../utils/iframe')
                    , eventUtils = require('../utils/event')
                    , random = require('../utils/random')
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:transport:iframe');
                }

                function IframeTransport(transport, transUrl, baseUrl) {
                    if (!IframeTransport.enabled()) {
                        throw new Error('Transport created when disabled');
                    }
                    EventEmitter.call(this);

                    var self = this;
                    this.origin = urlUtils.getOrigin(baseUrl);
                    this.baseUrl = baseUrl;
                    this.transUrl = transUrl;
                    this.transport = transport;
                    this.windowId = random.string(8);

                    var iframeUrl = urlUtils.addPath(baseUrl, '/iframe.html') + '#' + this.windowId;
                    debug(transport, transUrl, iframeUrl);

                    this.iframeObj = iframeUtils.createIframe(iframeUrl, function (r) {
                        debug('err callback');
                        self.emit('close', 1006, 'Unable to load an iframe (' + r + ')');
                        self.close();
                    });

                    this.onmessageCallback = this._message.bind(this);
                    eventUtils.attachEvent('message', this.onmessageCallback);
                }

                inherits(IframeTransport, EventEmitter);

                IframeTransport.prototype.close = function () {
                    debug('close');
                    this.removeAllListeners();
                    if (this.iframeObj) {
                        eventUtils.detachEvent('message', this.onmessageCallback);
                        try {
                            // When the iframe is not loaded, IE raises an exception
                            // on 'contentWindow'.
                            this.postMessage('c');
                        } catch (x) {
                            // intentionally empty
                        }
                        this.iframeObj.cleanup();
                        this.iframeObj = null;
                        this.onmessageCallback = this.iframeObj = null;
                    }
                };

                IframeTransport.prototype._message = function (e) {
                    debug('message', e.data);
                    if (!urlUtils.isOriginEqual(e.origin, this.origin)) {
                        debug('not same origin', e.origin, this.origin);
                        return;
                    }

                    var iframeMessage;
                    try {
                        iframeMessage = JSON3.parse(e.data);
                    } catch (ignored) {
                        debug('bad json', e.data);
                        return;
                    }

                    if (iframeMessage.windowId !== this.windowId) {
                        debug('mismatched window id', iframeMessage.windowId, this.windowId);
                        return;
                    }

                    switch (iframeMessage.type) {
                        case 's':
                            this.iframeObj.loaded();
                            // window global dependency
                            this.postMessage('s', JSON3.stringify([
                                version
                                , this.transport
                                , this.transUrl
                                , this.baseUrl
                            ]));
                            break;
                        case 't':
                            this.emit('message', iframeMessage.data);
                            break;
                        case 'c':
                            var cdata;
                            try {
                                cdata = JSON3.parse(iframeMessage.data);
                            } catch (ignored) {
                                debug('bad json', iframeMessage.data);
                                return;
                            }
                            this.emit('close', cdata[0], cdata[1]);
                            this.close();
                            break;
                    }
                };

                IframeTransport.prototype.postMessage = function (type, data) {
                    debug('postMessage', type, data);
                    this.iframeObj.post(JSON3.stringify({
                        windowId: this.windowId
                        , type: type
                        , data: data || ''
                    }), this.origin);
                };

                IframeTransport.prototype.send = function (message) {
                    debug('send', message);
                    this.postMessage('m', message);
                };

                IframeTransport.enabled = function () {
                    return iframeUtils.iframeEnabled;
                };

                IframeTransport.transportName = 'iframe';
                IframeTransport.roundTrips = 2;

                module.exports = IframeTransport;

            }).call(this, {env: {}})

        }, {
            "../utils/event": 46,
            "../utils/iframe": 47,
            "../utils/random": 50,
            "../utils/url": 52,
            "../version": 53,
            "debug": 55,
            "events": 3,
            "inherits": 57,
            "json3": 58
        }],
        23: [function (require, module, exports) {
            (function (global) {
                'use strict';

// The simplest and most robust transport, using the well-know cross
// domain hack - JSONP. This transport is quite inefficient - one
// message could use up to one http request. But at least it works almost
// everywhere.
// Known limitations:
//   o you will get a spinning cursor
//   o for Konqueror a dumb timer is needed to detect errors

                var inherits = require('inherits')
                    , SenderReceiver = require('./lib/sender-receiver')
                    , JsonpReceiver = require('./receiver/jsonp')
                    , jsonpSender = require('./sender/jsonp')
                ;

                function JsonPTransport(transUrl) {
                    if (!JsonPTransport.enabled()) {
                        throw new Error('Transport created when disabled');
                    }
                    SenderReceiver.call(this, transUrl, '/jsonp', jsonpSender, JsonpReceiver);
                }

                inherits(JsonPTransport, SenderReceiver);

                JsonPTransport.enabled = function () {
                    return !!global.document;
                };

                JsonPTransport.transportName = 'jsonp-polling';
                JsonPTransport.roundTrips = 1;
                JsonPTransport.needBody = true;

                module.exports = JsonPTransport;

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

        }, {"./lib/sender-receiver": 28, "./receiver/jsonp": 31, "./sender/jsonp": 33, "inherits": 57}],
        24: [function (require, module, exports) {
            (function (process) {
                'use strict';

                var inherits = require('inherits')
                    , urlUtils = require('../../utils/url')
                    , SenderReceiver = require('./sender-receiver')
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:ajax-based');
                }

                function createAjaxSender(AjaxObject) {
                    return function (url, payload, callback) {
                        debug('create ajax sender', url, payload);
                        var opt = {};
                        if (typeof payload === 'string') {
                            opt.headers = {'Content-type': 'text/plain'};
                        }
                        var ajaxUrl = urlUtils.addPath(url, '/xhr_send');
                        var xo = new AjaxObject('POST', ajaxUrl, payload, opt);
                        xo.once('finish', function (status) {
                            debug('finish', status);
                            xo = null;

                            if (status !== 200 && status !== 204) {
                                return callback(new Error('http status ' + status));
                            }
                            callback();
                        });
                        return function () {
                            debug('abort');
                            xo.close();
                            xo = null;

                            var err = new Error('Aborted');
                            err.code = 1000;
                            callback(err);
                        };
                    };
                }

                function AjaxBasedTransport(transUrl, urlSuffix, Receiver, AjaxObject) {
                    SenderReceiver.call(this, transUrl, urlSuffix, createAjaxSender(AjaxObject), Receiver, AjaxObject);
                }

                inherits(AjaxBasedTransport, SenderReceiver);

                module.exports = AjaxBasedTransport;

            }).call(this, {env: {}})

        }, {"../../utils/url": 52, "./sender-receiver": 28, "debug": 55, "inherits": 57}],
        25: [function (require, module, exports) {
            (function (process) {
                'use strict';

                var inherits = require('inherits')
                    , EventEmitter = require('events').EventEmitter
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:buffered-sender');
                }

                function BufferedSender(url, sender) {
                    debug(url);
                    EventEmitter.call(this);
                    this.sendBuffer = [];
                    this.sender = sender;
                    this.url = url;
                }

                inherits(BufferedSender, EventEmitter);

                BufferedSender.prototype.send = function (message) {
                    debug('send', message);
                    this.sendBuffer.push(message);
                    if (!this.sendStop) {
                        this.sendSchedule();
                    }
                };

// For polling transports in a situation when in the message callback,
// new message is being send. If the sending connection was started
// before receiving one, it is possible to saturate the network and
// timeout due to the lack of receiving socket. To avoid that we delay
// sending messages by some small time, in order to let receiving
// connection be started beforehand. This is only a halfmeasure and
// does not fix the big problem, but it does make the tests go more
// stable on slow networks.
                BufferedSender.prototype.sendScheduleWait = function () {
                    debug('sendScheduleWait');
                    var self = this;
                    var tref;
                    this.sendStop = function () {
                        debug('sendStop');
                        self.sendStop = null;
                        clearTimeout(tref);
                    };
                    tref = setTimeout(function () {
                        debug('timeout');
                        self.sendStop = null;
                        self.sendSchedule();
                    }, 25);
                };

                BufferedSender.prototype.sendSchedule = function () {
                    debug('sendSchedule', this.sendBuffer.length);
                    var self = this;
                    if (this.sendBuffer.length > 0) {
                        var payload = '[' + this.sendBuffer.join(',') + ']';
                        this.sendStop = this.sender(this.url, payload, function (err) {
                            self.sendStop = null;
                            if (err) {
                                debug('error', err);
                                self.emit('close', err.code || 1006, 'Sending error: ' + err);
                                self.close();
                            } else {
                                self.sendScheduleWait();
                            }
                        });
                        this.sendBuffer = [];
                    }
                };

                BufferedSender.prototype._cleanup = function () {
                    debug('_cleanup');
                    this.removeAllListeners();
                };

                BufferedSender.prototype.close = function () {
                    debug('close');
                    this._cleanup();
                    if (this.sendStop) {
                        this.sendStop();
                        this.sendStop = null;
                    }
                };

                module.exports = BufferedSender;

            }).call(this, {env: {}})

        }, {"debug": 55, "events": 3, "inherits": 57}],
        26: [function (require, module, exports) {
            (function (global) {
                'use strict';

                var inherits = require('inherits')
                    , IframeTransport = require('../iframe')
                    , objectUtils = require('../../utils/object')
                ;

                module.exports = function (transport) {

                    function IframeWrapTransport(transUrl, baseUrl) {
                        IframeTransport.call(this, transport.transportName, transUrl, baseUrl);
                    }

                    inherits(IframeWrapTransport, IframeTransport);

                    IframeWrapTransport.enabled = function (url, info) {
                        if (!global.document) {
                            return false;
                        }

                        var iframeInfo = objectUtils.extend({}, info);
                        iframeInfo.sameOrigin = true;
                        return transport.enabled(iframeInfo) && IframeTransport.enabled();
                    };

                    IframeWrapTransport.transportName = 'iframe-' + transport.transportName;
                    IframeWrapTransport.needBody = true;
                    IframeWrapTransport.roundTrips = IframeTransport.roundTrips + transport.roundTrips - 1; // html, javascript (2) + transport - no CORS (1)

                    IframeWrapTransport.facadeTransport = transport;

                    return IframeWrapTransport;
                };

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

        }, {"../../utils/object": 49, "../iframe": 22, "inherits": 57}],
        27: [function (require, module, exports) {
            (function (process) {
                'use strict';

                var inherits = require('inherits')
                    , EventEmitter = require('events').EventEmitter
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:polling');
                }

                function Polling(Receiver, receiveUrl, AjaxObject) {
                    debug(receiveUrl);
                    EventEmitter.call(this);
                    this.Receiver = Receiver;
                    this.receiveUrl = receiveUrl;
                    this.AjaxObject = AjaxObject;
                    this._scheduleReceiver();
                }

                inherits(Polling, EventEmitter);

                Polling.prototype._scheduleReceiver = function () {
                    debug('_scheduleReceiver');
                    var self = this;
                    var poll = this.poll = new this.Receiver(this.receiveUrl, this.AjaxObject);

                    poll.on('message', function (msg) {
                        debug('message', msg);
                        self.emit('message', msg);
                    });

                    poll.once('close', function (code, reason) {
                        debug('close', code, reason, self.pollIsClosing);
                        self.poll = poll = null;

                        if (!self.pollIsClosing) {
                            if (reason === 'network') {
                                self._scheduleReceiver();
                            } else {
                                self.emit('close', code || 1006, reason);
                                self.removeAllListeners();
                            }
                        }
                    });
                };

                Polling.prototype.abort = function () {
                    debug('abort');
                    this.removeAllListeners();
                    this.pollIsClosing = true;
                    if (this.poll) {
                        this.poll.abort();
                    }
                };

                module.exports = Polling;

            }).call(this, {env: {}})

        }, {"debug": 55, "events": 3, "inherits": 57}],
        28: [function (require, module, exports) {
            (function (process) {
                'use strict';

                var inherits = require('inherits')
                    , urlUtils = require('../../utils/url')
                    , BufferedSender = require('./buffered-sender')
                    , Polling = require('./polling')
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:sender-receiver');
                }

                function SenderReceiver(transUrl, urlSuffix, senderFunc, Receiver, AjaxObject) {
                    var pollUrl = urlUtils.addPath(transUrl, urlSuffix);
                    debug(pollUrl);
                    var self = this;
                    BufferedSender.call(this, transUrl, senderFunc);

                    this.poll = new Polling(Receiver, pollUrl, AjaxObject);
                    this.poll.on('message', function (msg) {
                        debug('poll message', msg);
                        self.emit('message', msg);
                    });
                    this.poll.once('close', function (code, reason) {
                        debug('poll close', code, reason);
                        self.poll = null;
                        self.emit('close', code, reason);
                        self.close();
                    });
                }

                inherits(SenderReceiver, BufferedSender);

                SenderReceiver.prototype.close = function () {
                    BufferedSender.prototype.close.call(this);
                    debug('close');
                    this.removeAllListeners();
                    if (this.poll) {
                        this.poll.abort();
                        this.poll = null;
                    }
                };

                module.exports = SenderReceiver;

            }).call(this, {env: {}})

        }, {"../../utils/url": 52, "./buffered-sender": 25, "./polling": 27, "debug": 55, "inherits": 57}],
        29: [function (require, module, exports) {
            (function (process) {
                'use strict';

                var inherits = require('inherits')
                    , EventEmitter = require('events').EventEmitter
                    , EventSourceDriver = require('eventsource')
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:receiver:eventsource');
                }

                function EventSourceReceiver(url) {
                    debug(url);
                    EventEmitter.call(this);

                    var self = this;
                    var es = this.es = new EventSourceDriver(url);
                    es.onmessage = function (e) {
                        debug('message', e.data);
                        self.emit('message', decodeURI(e.data));
                    };
                    es.onerror = function (e) {
                        debug('error', es.readyState, e);
                        // ES on reconnection has readyState = 0 or 1.
                        // on network error it's CLOSED = 2
                        var reason = (es.readyState !== 2 ? 'network' : 'permanent');
                        self._cleanup();
                        self._close(reason);
                    };
                }

                inherits(EventSourceReceiver, EventEmitter);

                EventSourceReceiver.prototype.abort = function () {
                    debug('abort');
                    this._cleanup();
                    this._close('user');
                };

                EventSourceReceiver.prototype._cleanup = function () {
                    debug('cleanup');
                    var es = this.es;
                    if (es) {
                        es.onmessage = es.onerror = null;
                        es.close();
                        this.es = null;
                    }
                };

                EventSourceReceiver.prototype._close = function (reason) {
                    debug('close', reason);
                    var self = this;
                    // Safari and chrome < 15 crash if we close window before
                    // waiting for ES cleanup. See:
                    // https://code.google.com/p/chromium/issues/detail?id=89155
                    setTimeout(function () {
                        self.emit('close', null, reason);
                        self.removeAllListeners();
                    }, 200);
                };

                module.exports = EventSourceReceiver;

            }).call(this, {env: {}})

        }, {"debug": 55, "events": 3, "eventsource": 18, "inherits": 57}],
        30: [function (require, module, exports) {
            (function (process, global) {
                'use strict';

                var inherits = require('inherits')
                    , iframeUtils = require('../../utils/iframe')
                    , urlUtils = require('../../utils/url')
                    , EventEmitter = require('events').EventEmitter
                    , random = require('../../utils/random')
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:receiver:htmlfile');
                }

                function HtmlfileReceiver(url) {
                    debug(url);
                    EventEmitter.call(this);
                    var self = this;
                    iframeUtils.polluteGlobalNamespace();

                    this.id = 'a' + random.string(6);
                    url = urlUtils.addQuery(url, 'c=' + decodeURIComponent(iframeUtils.WPrefix + '.' + this.id));

                    debug('using htmlfile', HtmlfileReceiver.htmlfileEnabled);
                    var constructFunc = HtmlfileReceiver.htmlfileEnabled ?
                        iframeUtils.createHtmlfile : iframeUtils.createIframe;

                    global[iframeUtils.WPrefix][this.id] = {
                        start: function () {
                            debug('start');
                            self.iframeObj.loaded();
                        }
                        , message: function (data) {
                            debug('message', data);
                            self.emit('message', data);
                        }
                        , stop: function () {
                            debug('stop');
                            self._cleanup();
                            self._close('network');
                        }
                    };
                    this.iframeObj = constructFunc(url, function () {
                        debug('callback');
                        self._cleanup();
                        self._close('permanent');
                    });
                }

                inherits(HtmlfileReceiver, EventEmitter);

                HtmlfileReceiver.prototype.abort = function () {
                    debug('abort');
                    this._cleanup();
                    this._close('user');
                };

                HtmlfileReceiver.prototype._cleanup = function () {
                    debug('_cleanup');
                    if (this.iframeObj) {
                        this.iframeObj.cleanup();
                        this.iframeObj = null;
                    }
                    delete global[iframeUtils.WPrefix][this.id];
                };

                HtmlfileReceiver.prototype._close = function (reason) {
                    debug('_close', reason);
                    this.emit('close', null, reason);
                    this.removeAllListeners();
                };

                HtmlfileReceiver.htmlfileEnabled = false;

// obfuscate to avoid firewalls
                var axo = ['Active'].concat('Object').join('X');
                if (axo in global) {
                    try {
                        HtmlfileReceiver.htmlfileEnabled = !!new global[axo]('htmlfile');
                    } catch (x) {
                        // intentionally empty
                    }
                }

                HtmlfileReceiver.enabled = HtmlfileReceiver.htmlfileEnabled || iframeUtils.iframeEnabled;

                module.exports = HtmlfileReceiver;

            }).call(this, {env: {}}, typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})

        }, {
            "../../utils/iframe": 47,
            "../../utils/random": 50,
            "../../utils/url": 52,
            "debug": 55,
            "events": 3,
            "inherits": 57
        }],
        31: [function (require, module, exports) {
            (function (process, global) {
                'use strict';

                var utils = require('../../utils/iframe')
                    , random = require('../../utils/random')
                    , browser = require('../../utils/browser')
                    , urlUtils = require('../../utils/url')
                    , inherits = require('inherits')
                    , EventEmitter = require('events').EventEmitter
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:receiver:jsonp');
                }

                function JsonpReceiver(url) {
                    debug(url);
                    var self = this;
                    EventEmitter.call(this);

                    utils.polluteGlobalNamespace();

                    this.id = 'a' + random.string(6);
                    var urlWithId = urlUtils.addQuery(url, 'c=' + encodeURIComponent(utils.WPrefix + '.' + this.id));

                    global[utils.WPrefix][this.id] = this._callback.bind(this);
                    this._createScript(urlWithId);

                    // Fallback mostly for Konqueror - stupid timer, 35 seconds shall be plenty.
                    this.timeoutId = setTimeout(function () {
                        debug('timeout');
                        self._abort(new Error('JSONP script loaded abnormally (timeout)'));
                    }, JsonpReceiver.timeout);
                }

                inherits(JsonpReceiver, EventEmitter);

                JsonpReceiver.prototype.abort = function () {
                    debug('abort');
                    if (global[utils.WPrefix][this.id]) {
                        var err = new Error('JSONP user aborted read');
                        err.code = 1000;
                        this._abort(err);
                    }
                };

                JsonpReceiver.timeout = 35000;
                JsonpReceiver.scriptErrorTimeout = 1000;

                JsonpReceiver.prototype._callback = function (data) {
                    debug('_callback', data);
                    this._cleanup();

                    if (this.aborting) {
                        return;
                    }

                    if (data) {
                        debug('message', data);
                        this.emit('message', data);
                    }
                    this.emit('close', null, 'network');
                    this.removeAllListeners();
                };

                JsonpReceiver.prototype._abort = function (err) {
                    debug('_abort', err);
                    this._cleanup();
                    this.aborting = true;
                    this.emit('close', err.code, err.message);
                    this.removeAllListeners();
                };

                JsonpReceiver.prototype._cleanup = function () {
                    debug('_cleanup');
                    clearTimeout(this.timeoutId);
                    if (this.script2) {
                        this.script2.parentNode.removeChild(this.script2);
                        this.script2 = null;
                    }
                    if (this.script) {
                        var script = this.script;
                        // Unfortunately, you can't really abort script loading of
                        // the script.
                        script.parentNode.removeChild(script);
                        script.onreadystatechange = script.onerror =
                            script.onload = script.onclick = null;
                        this.script = null;
                    }
                    delete global[utils.WPrefix][this.id];
                };

                JsonpReceiver.prototype._scriptError = function () {
                    debug('_scriptError');
                    var self = this;
                    if (this.errorTimer) {
                        return;
                    }

                    this.errorTimer = setTimeout(function () {
                        if (!self.loadedOkay) {
                            self._abort(new Error('JSONP script loaded abnormally (onerror)'));
                        }
                    }, JsonpReceiver.scriptErrorTimeout);
                };

                JsonpReceiver.prototype._createScript = function (url) {
                    debug('_createScript', url);
                    var self = this;
                    var script = this.script = global.document.createElement('script');
                    var script2;  // Opera synchronous load trick.

                    script.id = 'a' + random.string(8);
                    script.src = url;
                    script.type = 'text/javascript';
                    script.charset = 'UTF-8';
                    script.onerror = this._scriptError.bind(this);
                    script.onload = function () {
                        debug('onload');
                        self._abort(new Error('JSONP script loaded abnormally (onload)'));
                    };

                    // IE9 fires 'error' event after onreadystatechange or before, in random order.
                    // Use loadedOkay to determine if actually errored
                    script.onreadystatechange = function () {
                        debug('onreadystatechange', script.readyState);
                        if (/loaded|closed/.test(script.readyState)) {
                            if (script && script.htmlFor && script.onclick) {
                                self.loadedOkay = true;
                                try {
                                    // In IE, actually execute the script.
                                    script.onclick();
                                } catch (x) {
                                    // intentionally empty
                                }
                            }
                            if (script) {
                                self._abort(new Error('JSONP script loaded abnormally (onreadystatechange)'));
                            }
                        }
                    };
                    // IE: event/htmlFor/onclick trick.
                    // One can't rely on proper order for onreadystatechange. In order to
                    // make sure, set a 'htmlFor' and 'event' properties, so that
                    // script code will be installed as 'onclick' handler for the
                    // script object. Later, onreadystatechange, manually execute this
                    // code. FF and Chrome doesn't work with 'event' and 'htmlFor'
                    // set. For reference see:
                    //   http://jaubourg.net/2010/07/loading-script-as-onclick-handler-of.html
                    // Also, read on that about script ordering:
                    //   http://wiki.whatwg.org/wiki/Dynamic_Script_Execution_Order
                    if (typeof script.async === 'undefined' && global.document.attachEvent) {
                        // According to mozilla docs, in recent browsers script.async defaults
                        // to 'true', so we may use it to detect a good browser:
                        // https://developer.mozilla.org/en/HTML/Element/script
                        if (!browser.isOpera()) {
                            // Naively assume we're in IE
                            try {
                                script.htmlFor = script.id;
                                script.event = 'onclick';
                            } catch (x) {
                                // intentionally empty
                            }
                            script.async = true;
                        } else {
                            // Opera, second sync script hack
                            script2 = this.script2 = global.document.createElement('script');
                            script2.text = "try{var a = document.getElementById('" + script.id + "'); if(a)a.onerror();}catch(x){};";
                            script.async = script2.async = false;
                        }
                    }
                    if (typeof script.async !== 'undefined') {
                        script.async = true;
                    }

                    var head = global.document.getElementsByTagName('head')[0];
                    head.insertBefore(script, head.firstChild);
                    if (script2) {
                        head.insertBefore(script2, head.firstChild);
                    }
                };

                module.exports = JsonpReceiver;

            }).call(this, {env: {}}, typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})

        }, {
            "../../utils/browser": 44,
            "../../utils/iframe": 47,
            "../../utils/random": 50,
            "../../utils/url": 52,
            "debug": 55,
            "events": 3,
            "inherits": 57
        }],
        32: [function (require, module, exports) {
            (function (process) {
                'use strict';

                var inherits = require('inherits')
                    , EventEmitter = require('events').EventEmitter
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:receiver:xhr');
                }

                function XhrReceiver(url, AjaxObject) {
                    debug(url);
                    EventEmitter.call(this);
                    var self = this;

                    this.bufferPosition = 0;

                    this.xo = new AjaxObject('POST', url, null);
                    this.xo.on('chunk', this._chunkHandler.bind(this));
                    this.xo.once('finish', function (status, text) {
                        debug('finish', status, text);
                        self._chunkHandler(status, text);
                        self.xo = null;
                        var reason = status === 200 ? 'network' : 'permanent';
                        debug('close', reason);
                        self.emit('close', null, reason);
                        self._cleanup();
                    });
                }

                inherits(XhrReceiver, EventEmitter);

                XhrReceiver.prototype._chunkHandler = function (status, text) {
                    debug('_chunkHandler', status);
                    if (status !== 200 || !text) {
                        return;
                    }

                    for (var idx = -1; ; this.bufferPosition += idx + 1) {
                        var buf = text.slice(this.bufferPosition);
                        idx = buf.indexOf('\n');
                        if (idx === -1) {
                            break;
                        }
                        var msg = buf.slice(0, idx);
                        if (msg) {
                            debug('message', msg);
                            this.emit('message', msg);
                        }
                    }
                };

                XhrReceiver.prototype._cleanup = function () {
                    debug('_cleanup');
                    this.removeAllListeners();
                };

                XhrReceiver.prototype.abort = function () {
                    debug('abort');
                    if (this.xo) {
                        this.xo.close();
                        debug('close');
                        this.emit('close', null, 'user');
                        this.xo = null;
                    }
                    this._cleanup();
                };

                module.exports = XhrReceiver;

            }).call(this, {env: {}})

        }, {"debug": 55, "events": 3, "inherits": 57}],
        33: [function (require, module, exports) {
            (function (process, global) {
                'use strict';

                var random = require('../../utils/random')
                    , urlUtils = require('../../utils/url')
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:sender:jsonp');
                }

                var form, area;

                function createIframe(id) {
                    debug('createIframe', id);
                    try {
                        // ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
                        return global.document.createElement('<iframe name="' + id + '">');
                    } catch (x) {
                        var iframe = global.document.createElement('iframe');
                        iframe.name = id;
                        return iframe;
                    }
                }

                function createForm() {
                    debug('createForm');
                    form = global.document.createElement('form');
                    form.style.display = 'none';
                    form.style.position = 'absolute';
                    form.method = 'POST';
                    form.enctype = 'application/x-www-form-urlencoded';
                    form.acceptCharset = 'UTF-8';

                    area = global.document.createElement('textarea');
                    area.name = 'd';
                    form.appendChild(area);

                    global.document.body.appendChild(form);
                }

                module.exports = function (url, payload, callback) {
                    debug(url, payload);
                    if (!form) {
                        createForm();
                    }
                    var id = 'a' + random.string(8);
                    form.target = id;
                    form.action = urlUtils.addQuery(urlUtils.addPath(url, '/jsonp_send'), 'i=' + id);

                    var iframe = createIframe(id);
                    iframe.id = id;
                    iframe.style.display = 'none';
                    form.appendChild(iframe);

                    try {
                        area.value = payload;
                    } catch (e) {
                        // seriously broken browsers get here
                    }
                    form.submit();

                    var completed = function (err) {
                        debug('completed', id, err);
                        if (!iframe.onerror) {
                            return;
                        }
                        iframe.onreadystatechange = iframe.onerror = iframe.onload = null;
                        // Opera mini doesn't like if we GC iframe
                        // immediately, thus this timeout.
                        setTimeout(function () {
                            debug('cleaning up', id);
                            iframe.parentNode.removeChild(iframe);
                            iframe = null;
                        }, 500);
                        area.value = '';
                        // It is not possible to detect if the iframe succeeded or
                        // failed to submit our form.
                        callback(err);
                    };
                    iframe.onerror = function () {
                        debug('onerror', id);
                        completed();
                    };
                    iframe.onload = function () {
                        debug('onload', id);
                        completed();
                    };
                    iframe.onreadystatechange = function (e) {
                        debug('onreadystatechange', id, iframe.readyState, e);
                        if (iframe.readyState === 'complete') {
                            completed();
                        }
                    };
                    return function () {
                        debug('aborted', id);
                        completed(new Error('Aborted'));
                    };
                };

            }).call(this, {env: {}}, typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})

        }, {"../../utils/random": 50, "../../utils/url": 52, "debug": 55}],
        34: [function (require, module, exports) {
            (function (process, global) {
                'use strict';

                var EventEmitter = require('events').EventEmitter
                    , inherits = require('inherits')
                    , eventUtils = require('../../utils/event')
                    , browser = require('../../utils/browser')
                    , urlUtils = require('../../utils/url')
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:sender:xdr');
                }

// References:
//   http://ajaxian.com/archives/100-line-ajax-wrapper
//   http://msdn.microsoft.com/en-us/library/cc288060(v=VS.85).aspx

                function XDRObject(method, url, payload) {
                    debug(method, url);
                    var self = this;
                    EventEmitter.call(this);

                    setTimeout(function () {
                        self._start(method, url, payload);
                    }, 0);
                }

                inherits(XDRObject, EventEmitter);

                XDRObject.prototype._start = function (method, url, payload) {
                    debug('_start');
                    var self = this;
                    var xdr = new global.XDomainRequest();
                    // IE caches even POSTs
                    url = urlUtils.addQuery(url, 't=' + (+new Date()));

                    xdr.onerror = function () {
                        debug('onerror');
                        self._error();
                    };
                    xdr.ontimeout = function () {
                        debug('ontimeout');
                        self._error();
                    };
                    xdr.onprogress = function () {
                        debug('progress', xdr.responseText);
                        self.emit('chunk', 200, xdr.responseText);
                    };
                    xdr.onload = function () {
                        debug('load');
                        self.emit('finish', 200, xdr.responseText);
                        self._cleanup(false);
                    };
                    this.xdr = xdr;
                    this.unloadRef = eventUtils.unloadAdd(function () {
                        self._cleanup(true);
                    });
                    try {
                        // Fails with AccessDenied if port number is bogus
                        this.xdr.open(method, url);
                        if (this.timeout) {
                            this.xdr.timeout = this.timeout;
                        }
                        this.xdr.send(payload);
                    } catch (x) {
                        this._error();
                    }
                };

                XDRObject.prototype._error = function () {
                    this.emit('finish', 0, '');
                    this._cleanup(false);
                };

                XDRObject.prototype._cleanup = function (abort) {
                    debug('cleanup', abort);
                    if (!this.xdr) {
                        return;
                    }
                    this.removeAllListeners();
                    eventUtils.unloadDel(this.unloadRef);

                    this.xdr.ontimeout = this.xdr.onerror = this.xdr.onprogress = this.xdr.onload = null;
                    if (abort) {
                        try {
                            this.xdr.abort();
                        } catch (x) {
                            // intentionally empty
                        }
                    }
                    this.unloadRef = this.xdr = null;
                };

                XDRObject.prototype.close = function () {
                    debug('close');
                    this._cleanup(true);
                };

// IE 8/9 if the request target uses the same scheme - #79
                XDRObject.enabled = !!(global.XDomainRequest && browser.hasDomain());

                module.exports = XDRObject;

            }).call(this, {env: {}}, typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})

        }, {
            "../../utils/browser": 44,
            "../../utils/event": 46,
            "../../utils/url": 52,
            "debug": 55,
            "events": 3,
            "inherits": 57
        }],
        35: [function (require, module, exports) {
            'use strict';

            var inherits = require('inherits')
                , XhrDriver = require('../driver/xhr')
            ;

            function XHRCorsObject(method, url, payload, opts) {
                XhrDriver.call(this, method, url, payload, opts);
            }

            inherits(XHRCorsObject, XhrDriver);

            XHRCorsObject.enabled = XhrDriver.enabled && XhrDriver.supportsCORS;

            module.exports = XHRCorsObject;

        }, {"../driver/xhr": 17, "inherits": 57}],
        36: [function (require, module, exports) {
            'use strict';

            var EventEmitter = require('events').EventEmitter
                , inherits = require('inherits')
            ;

            function XHRFake(/* method, url, payload, opts */) {
                var self = this;
                EventEmitter.call(this);

                this.to = setTimeout(function () {
                    self.emit('finish', 200, '{}');
                }, XHRFake.timeout);
            }

            inherits(XHRFake, EventEmitter);

            XHRFake.prototype.close = function () {
                clearTimeout(this.to);
            };

            XHRFake.timeout = 2000;

            module.exports = XHRFake;

        }, {"events": 3, "inherits": 57}],
        37: [function (require, module, exports) {
            'use strict';

            var inherits = require('inherits')
                , XhrDriver = require('../driver/xhr')
            ;

            function XHRLocalObject(method, url, payload /*, opts */) {
                XhrDriver.call(this, method, url, payload, {
                    noCredentials: true
                });
            }

            inherits(XHRLocalObject, XhrDriver);

            XHRLocalObject.enabled = XhrDriver.enabled;

            module.exports = XHRLocalObject;

        }, {"../driver/xhr": 17, "inherits": 57}],
        38: [function (require, module, exports) {
            (function (process) {
                'use strict';

                var utils = require('../utils/event')
                    , urlUtils = require('../utils/url')
                    , inherits = require('inherits')
                    , EventEmitter = require('events').EventEmitter
                    , WebsocketDriver = require('./driver/websocket')
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:websocket');
                }

                function WebSocketTransport(transUrl, ignore, options) {
                    if (!WebSocketTransport.enabled()) {
                        throw new Error('Transport created when disabled');
                    }

                    EventEmitter.call(this);
                    debug('constructor', transUrl);

                    var self = this;
                    var url = urlUtils.addPath(transUrl, '/websocket');
                    if (url.slice(0, 5) === 'https') {
                        url = 'wss' + url.slice(5);
                    } else {
                        url = 'ws' + url.slice(4);
                    }
                    this.url = url;

                    this.ws = new WebsocketDriver(this.url, [], options);
                    this.ws.onmessage = function (e) {
                        debug('message event', e.data);
                        self.emit('message', e.data);
                    };
                    // Firefox has an interesting bug. If a websocket connection is
                    // created after onunload, it stays alive even when user
                    // navigates away from the page. In such situation let's lie -
                    // let's not open the ws connection at all. See:
                    // https://github.com/sockjs/sockjs-client/issues/28
                    // https://bugzilla.mozilla.org/show_bug.cgi?id=696085
                    this.unloadRef = utils.unloadAdd(function () {
                        debug('unload');
                        self.ws.close();
                    });
                    this.ws.onclose = function (e) {
                        debug('close event', e.code, e.reason);
                        self.emit('close', e.code, e.reason);
                        self._cleanup();
                    };
                    this.ws.onerror = function (e) {
                        debug('error event', e);
                        self.emit('close', 1006, 'WebSocket connection broken');
                        self._cleanup();
                    };
                }

                inherits(WebSocketTransport, EventEmitter);

                WebSocketTransport.prototype.send = function (data) {
                    var msg = '[' + data + ']';
                    debug('send', msg);
                    this.ws.send(msg);
                };

                WebSocketTransport.prototype.close = function () {
                    debug('close');
                    var ws = this.ws;
                    this._cleanup();
                    if (ws) {
                        ws.close();
                    }
                };

                WebSocketTransport.prototype._cleanup = function () {
                    debug('_cleanup');
                    var ws = this.ws;
                    if (ws) {
                        ws.onmessage = ws.onclose = ws.onerror = null;
                    }
                    utils.unloadDel(this.unloadRef);
                    this.unloadRef = this.ws = null;
                    this.removeAllListeners();
                };

                WebSocketTransport.enabled = function () {
                    debug('enabled');
                    return !!WebsocketDriver;
                };
                WebSocketTransport.transportName = 'websocket';

// In theory, ws should require 1 round trip. But in chrome, this is
// not very stable over SSL. Most likely a ws connection requires a
// separate SSL connection, in which case 2 round trips are an
// absolute minumum.
                WebSocketTransport.roundTrips = 2;

                module.exports = WebSocketTransport;

            }).call(this, {env: {}})

        }, {
            "../utils/event": 46,
            "../utils/url": 52,
            "./driver/websocket": 19,
            "debug": 55,
            "events": 3,
            "inherits": 57
        }],
        39: [function (require, module, exports) {
            'use strict';

            var inherits = require('inherits')
                , AjaxBasedTransport = require('./lib/ajax-based')
                , XdrStreamingTransport = require('./xdr-streaming')
                , XhrReceiver = require('./receiver/xhr')
                , XDRObject = require('./sender/xdr')
            ;

            function XdrPollingTransport(transUrl) {
                if (!XDRObject.enabled) {
                    throw new Error('Transport created when disabled');
                }
                AjaxBasedTransport.call(this, transUrl, '/xhr', XhrReceiver, XDRObject);
            }

            inherits(XdrPollingTransport, AjaxBasedTransport);

            XdrPollingTransport.enabled = XdrStreamingTransport.enabled;
            XdrPollingTransport.transportName = 'xdr-polling';
            XdrPollingTransport.roundTrips = 2; // preflight, ajax

            module.exports = XdrPollingTransport;

        }, {"./lib/ajax-based": 24, "./receiver/xhr": 32, "./sender/xdr": 34, "./xdr-streaming": 40, "inherits": 57}],
        40: [function (require, module, exports) {
            'use strict';

            var inherits = require('inherits')
                , AjaxBasedTransport = require('./lib/ajax-based')
                , XhrReceiver = require('./receiver/xhr')
                , XDRObject = require('./sender/xdr')
            ;

// According to:
//   http://stackoverflow.com/questions/1641507/detect-browser-support-for-cross-domain-xmlhttprequests
//   http://hacks.mozilla.org/2009/07/cross-site-xmlhttprequest-with-cors/

            function XdrStreamingTransport(transUrl) {
                if (!XDRObject.enabled) {
                    throw new Error('Transport created when disabled');
                }
                AjaxBasedTransport.call(this, transUrl, '/xhr_streaming', XhrReceiver, XDRObject);
            }

            inherits(XdrStreamingTransport, AjaxBasedTransport);

            XdrStreamingTransport.enabled = function (info) {
                if (info.cookie_needed || info.nullOrigin) {
                    return false;
                }
                return XDRObject.enabled && info.sameScheme;
            };

            XdrStreamingTransport.transportName = 'xdr-streaming';
            XdrStreamingTransport.roundTrips = 2; // preflight, ajax

            module.exports = XdrStreamingTransport;

        }, {"./lib/ajax-based": 24, "./receiver/xhr": 32, "./sender/xdr": 34, "inherits": 57}],
        41: [function (require, module, exports) {
            'use strict';

            var inherits = require('inherits')
                , AjaxBasedTransport = require('./lib/ajax-based')
                , XhrReceiver = require('./receiver/xhr')
                , XHRCorsObject = require('./sender/xhr-cors')
                , XHRLocalObject = require('./sender/xhr-local')
            ;

            function XhrPollingTransport(transUrl) {
                if (!XHRLocalObject.enabled && !XHRCorsObject.enabled) {
                    throw new Error('Transport created when disabled');
                }
                AjaxBasedTransport.call(this, transUrl, '/xhr', XhrReceiver, XHRCorsObject);
            }

            inherits(XhrPollingTransport, AjaxBasedTransport);

            XhrPollingTransport.enabled = function (info) {
                if (info.nullOrigin) {
                    return false;
                }

                if (XHRLocalObject.enabled && info.sameOrigin) {
                    return true;
                }
                return XHRCorsObject.enabled;
            };

            XhrPollingTransport.transportName = 'xhr-polling';
            XhrPollingTransport.roundTrips = 2; // preflight, ajax

            module.exports = XhrPollingTransport;

        }, {
            "./lib/ajax-based": 24,
            "./receiver/xhr": 32,
            "./sender/xhr-cors": 35,
            "./sender/xhr-local": 37,
            "inherits": 57
        }],
        42: [function (require, module, exports) {
            (function (global) {
                'use strict';

                var inherits = require('inherits')
                    , AjaxBasedTransport = require('./lib/ajax-based')
                    , XhrReceiver = require('./receiver/xhr')
                    , XHRCorsObject = require('./sender/xhr-cors')
                    , XHRLocalObject = require('./sender/xhr-local')
                    , browser = require('../utils/browser')
                ;

                function XhrStreamingTransport(transUrl) {
                    if (!XHRLocalObject.enabled && !XHRCorsObject.enabled) {
                        throw new Error('Transport created when disabled');
                    }
                    AjaxBasedTransport.call(this, transUrl, '/xhr_streaming', XhrReceiver, XHRCorsObject);
                }

                inherits(XhrStreamingTransport, AjaxBasedTransport);

                XhrStreamingTransport.enabled = function (info) {
                    if (info.nullOrigin) {
                        return false;
                    }
                    // Opera doesn't support xhr-streaming #60
                    // But it might be able to #92
                    if (browser.isOpera()) {
                        return false;
                    }

                    return XHRCorsObject.enabled;
                };

                XhrStreamingTransport.transportName = 'xhr-streaming';
                XhrStreamingTransport.roundTrips = 2; // preflight, ajax

// Safari gets confused when a streaming ajax request is started
// before onload. This causes the load indicator to spin indefinetely.
// Only require body when used in a browser
                XhrStreamingTransport.needBody = !!global.document;

                module.exports = XhrStreamingTransport;

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

        }, {
            "../utils/browser": 44,
            "./lib/ajax-based": 24,
            "./receiver/xhr": 32,
            "./sender/xhr-cors": 35,
            "./sender/xhr-local": 37,
            "inherits": 57
        }],
        43: [function (require, module, exports) {
            (function (global) {
                'use strict';

                if (global.crypto && global.crypto.getRandomValues) {
                    module.exports.randomBytes = function (length) {
                        var bytes = new Uint8Array(length);
                        global.crypto.getRandomValues(bytes);
                        return bytes;
                    };
                } else {
                    module.exports.randomBytes = function (length) {
                        var bytes = new Array(length);
                        for (var i = 0; i < length; i++) {
                            bytes[i] = Math.floor(Math.random() * 256);
                        }
                        return bytes;
                    };
                }

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

        }, {}],
        44: [function (require, module, exports) {
            (function (global) {
                'use strict';

                module.exports = {
                    isOpera: function () {
                        return global.navigator &&
                            /opera/i.test(global.navigator.userAgent);
                    }

                    , isKonqueror: function () {
                        return global.navigator &&
                            /konqueror/i.test(global.navigator.userAgent);
                    }

                    // #187 wrap document.domain in try/catch because of WP8 from file:///
                    , hasDomain: function () {
                        // non-browser client always has a domain
                        if (!global.document) {
                            return true;
                        }

                        try {
                            return !!global.document.domain;
                        } catch (e) {
                            return false;
                        }
                    }
                };

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

        }, {}],
        45: [function (require, module, exports) {
            'use strict';

            var JSON3 = require('json3');

// Some extra characters that Chrome gets wrong, and substitutes with
// something else on the wire.
// eslint-disable-next-line no-control-regex
            var extraEscapable = /[\x00-\x1f\ud800-\udfff\ufffe\uffff\u0300-\u0333\u033d-\u0346\u034a-\u034c\u0350-\u0352\u0357-\u0358\u035c-\u0362\u0374\u037e\u0387\u0591-\u05af\u05c4\u0610-\u0617\u0653-\u0654\u0657-\u065b\u065d-\u065e\u06df-\u06e2\u06eb-\u06ec\u0730\u0732-\u0733\u0735-\u0736\u073a\u073d\u073f-\u0741\u0743\u0745\u0747\u07eb-\u07f1\u0951\u0958-\u095f\u09dc-\u09dd\u09df\u0a33\u0a36\u0a59-\u0a5b\u0a5e\u0b5c-\u0b5d\u0e38-\u0e39\u0f43\u0f4d\u0f52\u0f57\u0f5c\u0f69\u0f72-\u0f76\u0f78\u0f80-\u0f83\u0f93\u0f9d\u0fa2\u0fa7\u0fac\u0fb9\u1939-\u193a\u1a17\u1b6b\u1cda-\u1cdb\u1dc0-\u1dcf\u1dfc\u1dfe\u1f71\u1f73\u1f75\u1f77\u1f79\u1f7b\u1f7d\u1fbb\u1fbe\u1fc9\u1fcb\u1fd3\u1fdb\u1fe3\u1feb\u1fee-\u1fef\u1ff9\u1ffb\u1ffd\u2000-\u2001\u20d0-\u20d1\u20d4-\u20d7\u20e7-\u20e9\u2126\u212a-\u212b\u2329-\u232a\u2adc\u302b-\u302c\uaab2-\uaab3\uf900-\ufa0d\ufa10\ufa12\ufa15-\ufa1e\ufa20\ufa22\ufa25-\ufa26\ufa2a-\ufa2d\ufa30-\ufa6d\ufa70-\ufad9\ufb1d\ufb1f\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40-\ufb41\ufb43-\ufb44\ufb46-\ufb4e\ufff0-\uffff]/g
                , extraLookup;

// This may be quite slow, so let's delay until user actually uses bad
// characters.
            var unrollLookup = function (escapable) {
                var i;
                var unrolled = {};
                var c = [];
                for (i = 0; i < 65536; i++) {
                    c.push(String.fromCharCode(i));
                }
                escapable.lastIndex = 0;
                c.join('').replace(escapable, function (a) {
                    unrolled[a] = '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
                    return '';
                });
                escapable.lastIndex = 0;
                return unrolled;
            };

// Quote string, also taking care of unicode characters that browsers
// often break. Especially, take care of unicode surrogates:
// http://en.wikipedia.org/wiki/Mapping_of_Unicode_characters#Surrogates
            module.exports = {
                quote: function (string) {
                    var quoted = JSON3.stringify(string);

                    // In most cases this should be very fast and good enough.
                    extraEscapable.lastIndex = 0;
                    if (!extraEscapable.test(quoted)) {
                        return quoted;
                    }

                    if (!extraLookup) {
                        extraLookup = unrollLookup(extraEscapable);
                    }

                    return quoted.replace(extraEscapable, function (a) {
                        return extraLookup[a];
                    });
                }
            };

        }, {"json3": 58}],
        46: [function (require, module, exports) {
            (function (global) {
                'use strict';

                var random = require('./random');

                var onUnload = {}
                    , afterUnload = false
                    // detect google chrome packaged apps because they don't allow the 'unload' event
                    , isChromePackagedApp = global.chrome && global.chrome.app && global.chrome.app.runtime
                ;

                module.exports = {
                    attachEvent: function (event, listener) {
                        if (typeof global.addEventListener !== 'undefined') {
                            global.addEventListener(event, listener, false);
                        } else if (global.document && global.attachEvent) {
                            // IE quirks.
                            // According to: http://stevesouders.com/misc/test-postmessage.php
                            // the message gets delivered only to 'document', not 'window'.
                            global.document.attachEvent('on' + event, listener);
                            // I get 'window' for ie8.
                            global.attachEvent('on' + event, listener);
                        }
                    }

                    , detachEvent: function (event, listener) {
                        if (typeof global.addEventListener !== 'undefined') {
                            global.removeEventListener(event, listener, false);
                        } else if (global.document && global.detachEvent) {
                            global.document.detachEvent('on' + event, listener);
                            global.detachEvent('on' + event, listener);
                        }
                    }

                    , unloadAdd: function (listener) {
                        if (isChromePackagedApp) {
                            return null;
                        }

                        var ref = random.string(8);
                        onUnload[ref] = listener;
                        if (afterUnload) {
                            setTimeout(this.triggerUnloadCallbacks, 0);
                        }
                        return ref;
                    }

                    , unloadDel: function (ref) {
                        if (ref in onUnload) {
                            delete onUnload[ref];
                        }
                    }

                    , triggerUnloadCallbacks: function () {
                        for (var ref in onUnload) {
                            onUnload[ref]();
                            delete onUnload[ref];
                        }
                    }
                };

                var unloadTriggered = function () {
                    if (afterUnload) {
                        return;
                    }
                    afterUnload = true;
                    module.exports.triggerUnloadCallbacks();
                };

// 'unload' alone is not reliable in opera within an iframe, but we
// can't use `beforeunload` as IE fires it on javascript: links.
                if (!isChromePackagedApp) {
                    module.exports.attachEvent('unload', unloadTriggered);
                }

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

        }, {"./random": 50}],
        47: [function (require, module, exports) {
            (function (process, global) {
                'use strict';

                var eventUtils = require('./event')
                    , JSON3 = require('json3')
                    , browser = require('./browser')
                ;

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:utils:iframe');
                }

                module.exports = {
                    WPrefix: '_jp'
                    , currentWindowId: null

                    , polluteGlobalNamespace: function () {
                        if (!(module.exports.WPrefix in global)) {
                            global[module.exports.WPrefix] = {};
                        }
                    }

                    , postMessage: function (type, data) {
                        if (global.parent !== global) {
                            global.parent.postMessage(JSON3.stringify({
                                windowId: module.exports.currentWindowId
                                , type: type
                                , data: data || ''
                            }), '*');
                        } else {
                            debug('Cannot postMessage, no parent window.', type, data);
                        }
                    }

                    , createIframe: function (iframeUrl, errorCallback) {
                        var iframe = global.document.createElement('iframe');
                        var tref, unloadRef;
                        var unattach = function () {
                            debug('unattach');
                            clearTimeout(tref);
                            // Explorer had problems with that.
                            try {
                                iframe.onload = null;
                            } catch (x) {
                                // intentionally empty
                            }
                            iframe.onerror = null;
                        };
                        var cleanup = function () {
                            debug('cleanup');
                            if (iframe) {
                                unattach();
                                // This timeout makes chrome fire onbeforeunload event
                                // within iframe. Without the timeout it goes straight to
                                // onunload.
                                setTimeout(function () {
                                    if (iframe) {
                                        iframe.parentNode.removeChild(iframe);
                                    }
                                    iframe = null;
                                }, 0);
                                eventUtils.unloadDel(unloadRef);
                            }
                        };
                        var onerror = function (err) {
                            debug('onerror', err);
                            if (iframe) {
                                cleanup();
                                errorCallback(err);
                            }
                        };
                        var post = function (msg, origin) {
                            debug('post', msg, origin);
                            setTimeout(function () {
                                try {
                                    // When the iframe is not loaded, IE raises an exception
                                    // on 'contentWindow'.
                                    if (iframe && iframe.contentWindow) {
                                        iframe.contentWindow.postMessage(msg, origin);
                                    }
                                } catch (x) {
                                    // intentionally empty
                                }
                            }, 0);
                        };

                        iframe.src = iframeUrl;
                        iframe.style.display = 'none';
                        iframe.style.position = 'absolute';
                        iframe.onerror = function () {
                            onerror('onerror');
                        };
                        iframe.onload = function () {
                            debug('onload');
                            // `onload` is triggered before scripts on the iframe are
                            // executed. Give it few seconds to actually load stuff.
                            clearTimeout(tref);
                            tref = setTimeout(function () {
                                onerror('onload timeout');
                            }, 2000);
                        };
                        global.document.body.appendChild(iframe);
                        tref = setTimeout(function () {
                            onerror('timeout');
                        }, 15000);
                        unloadRef = eventUtils.unloadAdd(cleanup);
                        return {
                            post: post
                            , cleanup: cleanup
                            , loaded: unattach
                        };
                    }

                    /* eslint no-undef: "off", new-cap: "off" */
                    , createHtmlfile: function (iframeUrl, errorCallback) {
                        var axo = ['Active'].concat('Object').join('X');
                        var doc = new global[axo]('htmlfile');
                        var tref, unloadRef;
                        var iframe;
                        var unattach = function () {
                            clearTimeout(tref);
                            iframe.onerror = null;
                        };
                        var cleanup = function () {
                            if (doc) {
                                unattach();
                                eventUtils.unloadDel(unloadRef);
                                iframe.parentNode.removeChild(iframe);
                                iframe = doc = null;
                                CollectGarbage();
                            }
                        };
                        var onerror = function (r) {
                            debug('onerror', r);
                            if (doc) {
                                cleanup();
                                errorCallback(r);
                            }
                        };
                        var post = function (msg, origin) {
                            try {
                                // When the iframe is not loaded, IE raises an exception
                                // on 'contentWindow'.
                                setTimeout(function () {
                                    if (iframe && iframe.contentWindow) {
                                        iframe.contentWindow.postMessage(msg, origin);
                                    }
                                }, 0);
                            } catch (x) {
                                // intentionally empty
                            }
                        };

                        doc.open();
                        doc.write('<html><s' + 'cript>' +
                            'document.domain="' + global.document.domain + '";' +
                            '</s' + 'cript></html>');
                        doc.close();
                        doc.parentWindow[module.exports.WPrefix] = global[module.exports.WPrefix];
                        var c = doc.createElement('div');
                        doc.body.appendChild(c);
                        iframe = doc.createElement('iframe');
                        c.appendChild(iframe);
                        iframe.src = iframeUrl;
                        iframe.onerror = function () {
                            onerror('onerror');
                        };
                        tref = setTimeout(function () {
                            onerror('timeout');
                        }, 15000);
                        unloadRef = eventUtils.unloadAdd(cleanup);
                        return {
                            post: post
                            , cleanup: cleanup
                            , loaded: unattach
                        };
                    }
                };

                module.exports.iframeEnabled = false;
                if (global.document) {
                    // postMessage misbehaves in konqueror 4.6.5 - the messages are delivered with
                    // huge delay, or not at all.
                    module.exports.iframeEnabled = (typeof global.postMessage === 'function' ||
                        typeof global.postMessage === 'object') && (!browser.isKonqueror());
                }

            }).call(this, {env: {}}, typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})

        }, {"./browser": 44, "./event": 46, "debug": 55, "json3": 58}],
        48: [function (require, module, exports) {
            (function (global) {
                'use strict';

                var logObject = {};
                ['log', 'debug', 'warn'].forEach(function (level) {
                    var levelExists;

                    try {
                        levelExists = global.console && global.console[level] && global.console[level].apply;
                    } catch (e) {
                        // do nothing
                    }

                    logObject[level] = levelExists ? function () {
                        return global.console[level].apply(global.console, arguments);
                    } : (level === 'log' ? function () {
                    } : logObject.log);
                });

                module.exports = logObject;

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

        }, {}],
        49: [function (require, module, exports) {
            'use strict';

            module.exports = {
                isObject: function (obj) {
                    var type = typeof obj;
                    return type === 'function' || type === 'object' && !!obj;
                }

                , extend: function (obj) {
                    if (!this.isObject(obj)) {
                        return obj;
                    }
                    var source, prop;
                    for (var i = 1, length = arguments.length; i < length; i++) {
                        source = arguments[i];
                        for (prop in source) {
                            if (Object.prototype.hasOwnProperty.call(source, prop)) {
                                obj[prop] = source[prop];
                            }
                        }
                    }
                    return obj;
                }
            };

        }, {}],
        50: [function (require, module, exports) {
            'use strict';

            /* global crypto:true */
            var crypto = require('crypto');

// This string has length 32, a power of 2, so the modulus doesn't introduce a
// bias.
            var _randomStringChars = 'abcdefghijklmnopqrstuvwxyz012345';
            module.exports = {
                string: function (length) {
                    var max = _randomStringChars.length;
                    var bytes = crypto.randomBytes(length);
                    var ret = [];
                    for (var i = 0; i < length; i++) {
                        ret.push(_randomStringChars.substr(bytes[i] % max, 1));
                    }
                    return ret.join('');
                }

                , number: function (max) {
                    return Math.floor(Math.random() * max);
                }

                , numberString: function (max) {
                    var t = ('' + (max - 1)).length;
                    var p = new Array(t + 1).join('0');
                    return (p + this.number(max)).slice(-t);
                }
            };

        }, {"crypto": 43}],
        51: [function (require, module, exports) {
            (function (process) {
                'use strict';

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:utils:transport');
                }

                module.exports = function (availableTransports) {
                    return {
                        filterToEnabled: function (transportsWhitelist, info) {
                            var transports = {
                                main: []
                                , facade: []
                            };
                            if (!transportsWhitelist) {
                                transportsWhitelist = [];
                            } else if (typeof transportsWhitelist === 'string') {
                                transportsWhitelist = [transportsWhitelist];
                            }

                            availableTransports.forEach(function (trans) {
                                if (!trans) {
                                    return;
                                }

                                if (trans.transportName === 'websocket' && info.websocket === false) {
                                    debug('disabled from server', 'websocket');
                                    return;
                                }

                                if (transportsWhitelist.length &&
                                    transportsWhitelist.indexOf(trans.transportName) === -1) {
                                    debug('not in whitelist', trans.transportName);
                                    return;
                                }

                                if (trans.enabled(info)) {
                                    debug('enabled', trans.transportName);
                                    transports.main.push(trans);
                                    if (trans.facadeTransport) {
                                        transports.facade.push(trans.facadeTransport);
                                    }
                                } else {
                                    debug('disabled', trans.transportName);
                                }
                            });
                            return transports;
                        }
                    };
                };

            }).call(this, {env: {}})

        }, {"debug": 55}],
        52: [function (require, module, exports) {
            (function (process) {
                'use strict';

                var URL = require('url-parse');

                var debug = function () {
                };
                if (process.env.NODE_ENV !== 'production') {
                    debug = require('debug')('sockjs-client:utils:url');
                }

                module.exports = {
                    getOrigin: function (url) {
                        if (!url) {
                            return null;
                        }

                        var p = new URL(url);
                        if (p.protocol === 'file:') {
                            return null;
                        }

                        var port = p.port;
                        if (!port) {
                            port = (p.protocol === 'https:') ? '443' : '80';
                        }

                        return p.protocol + '//' + p.hostname + ':' + port;
                    }

                    , isOriginEqual: function (a, b) {
                        var res = this.getOrigin(a) === this.getOrigin(b);
                        debug('same', a, b, res);
                        return res;
                    }

                    , isSchemeEqual: function (a, b) {
                        return (a.split(':')[0] === b.split(':')[0]);
                    }

                    , addPath: function (url, path) {
                        var qs = url.split('?');
                        return qs[0] + path + (qs[1] ? '?' + qs[1] : '');
                    }

                    , addQuery: function (url, q) {
                        return url + (url.indexOf('?') === -1 ? ('?' + q) : ('&' + q));
                    }
                };

            }).call(this, {env: {}})

        }, {"debug": 55, "url-parse": 61}],
        53: [function (require, module, exports) {
            module.exports = '1.4.0';

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

            var s = 1000;
            var m = s * 60;
            var h = m * 60;
            var d = h * 24;
            var w = d * 7;
            var y = d * 365.25;

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

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

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

            function parse(str) {
                str = String(str);
                if (str.length > 100) {
                    return;
                }
                var match = /^((?:\d+)?\-?\d?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(
                    str
                );
                if (!match) {
                    return;
                }
                var n = parseFloat(match[1]);
                var type = (match[2] || 'ms').toLowerCase();
                switch (type) {
                    case 'years':
                    case 'year':
                    case 'yrs':
                    case 'yr':
                    case 'y':
                        return n * y;
                    case 'weeks':
                    case 'week':
                    case 'w':
                        return n * w;
                    case 'days':
                    case 'day':
                    case 'd':
                        return n * d;
                    case 'hours':
                    case 'hour':
                    case 'hrs':
                    case 'hr':
                    case 'h':
                        return n * h;
                    case 'minutes':
                    case 'minute':
                    case 'mins':
                    case 'min':
                    case 'm':
                        return n * m;
                    case 'seconds':
                    case 'second':
                    case 'secs':
                    case 'sec':
                    case 's':
                        return n * s;
                    case 'milliseconds':
                    case 'millisecond':
                    case 'msecs':
                    case 'msec':
                    case 'ms':
                        return n;
                    default:
                        return undefined;
                }
            }

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

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

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

            function fmtLong(ms) {
                var msAbs = Math.abs(ms);
                if (msAbs >= d) {
                    return plural(ms, msAbs, d, 'day');
                }
                if (msAbs >= h) {
                    return plural(ms, msAbs, h, 'hour');
                }
                if (msAbs >= m) {
                    return plural(ms, msAbs, m, 'minute');
                }
                if (msAbs >= s) {
                    return plural(ms, msAbs, s, 'second');
                }
                return ms + ' ms';
            }

            /**
             * Pluralization helper.
             */

            function plural(ms, msAbs, n, name) {
                var isPlural = msAbs >= n * 1.5;
                return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');
            }

        }, {}],
        55: [function (require, module, exports) {
            (function (process) {
                "use strict";

                function _typeof(obj) {
                    if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
                        _typeof = function _typeof(obj) {
                            return typeof obj;
                        };
                    } else {
                        _typeof = function _typeof(obj) {
                            return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
                        };
                    }
                    return _typeof(obj);
                }

                /* eslint-env browser */

                /**
                 * This is the web browser implementation of `debug()`.
                 */
                exports.log = log;
                exports.formatArgs = formatArgs;
                exports.save = save;
                exports.load = load;
                exports.useColors = useColors;
                exports.storage = localstorage();
                /**
                 * Colors.
                 */

                exports.colors = ['#0000CC', '#0000FF', '#0033CC', '#0033FF', '#0066CC', '#0066FF', '#0099CC', '#0099FF', '#00CC00', '#00CC33', '#00CC66', '#00CC99', '#00CCCC', '#00CCFF', '#3300CC', '#3300FF', '#3333CC', '#3333FF', '#3366CC', '#3366FF', '#3399CC', '#3399FF', '#33CC00', '#33CC33', '#33CC66', '#33CC99', '#33CCCC', '#33CCFF', '#6600CC', '#6600FF', '#6633CC', '#6633FF', '#66CC00', '#66CC33', '#9900CC', '#9900FF', '#9933CC', '#9933FF', '#99CC00', '#99CC33', '#CC0000', '#CC0033', '#CC0066', '#CC0099', '#CC00CC', '#CC00FF', '#CC3300', '#CC3333', '#CC3366', '#CC3399', '#CC33CC', '#CC33FF', '#CC6600', '#CC6633', '#CC9900', '#CC9933', '#CCCC00', '#CCCC33', '#FF0000', '#FF0033', '#FF0066', '#FF0099', '#FF00CC', '#FF00FF', '#FF3300', '#FF3333', '#FF3366', '#FF3399', '#FF33CC', '#FF33FF', '#FF6600', '#FF6633', '#FF9900', '#FF9933', '#FFCC00', '#FFCC33'];

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

                function useColors() {
                    // NB: In an Electron preload script, document will be defined but not fully
                    // initialized. Since we know we're in Chrome, we'll just detect this case
                    // explicitly
                    if (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {
                        return true;
                    } // Internet Explorer and Edge do not support colors.


                    if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
                        return false;
                    } // Is webkit? http://stackoverflow.com/a/16459606/376773
                    // document is undefined in react-native: https://github.com/facebook/react-native/pull/1632


                    return typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance || // Is firebug? http://stackoverflow.com/a/398120/376773
                        typeof window !== 'undefined' && window.console && (window.console.firebug || window.console.exception && window.console.table) || // Is firefox >= v31?
                        // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
                        typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31 || // Double check webkit in userAgent just in case we are in a worker
                        typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/);
                }

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


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

                    if (!this.useColors) {
                        return;
                    }

                    var c = 'color: ' + this.color;
                    args.splice(1, 0, c, 'color: inherit'); // The final "%c" is somewhat tricky, because there could be other
                    // arguments passed either before or after the %c, so we need to
                    // figure out the correct index to insert the CSS into

                    var index = 0;
                    var lastC = 0;
                    args[0].replace(/%[a-zA-Z%]/g, function (match) {
                        if (match === '%%') {
                            return;
                        }

                        index++;

                        if (match === '%c') {
                            // We only are interested in the *last* %c
                            // (the user may have provided their own)
                            lastC = index;
                        }
                    });
                    args.splice(lastC, 0, c);
                }

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


                function log() {
                    var _console;

                    // This hackery is required for IE8/9, where
                    // the `console.log` function doesn't have 'apply'
                    return (typeof console === "undefined" ? "undefined" : _typeof(console)) === 'object' && console.log && (_console = console).log.apply(_console, arguments);
                }

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


                function save(namespaces) {
                    try {
                        if (namespaces) {
                            exports.storage.setItem('debug', namespaces);
                        } else {
                            exports.storage.removeItem('debug');
                        }
                    } catch (error) {// Swallow
                        // XXX (@Qix-) should we be logging these?
                    }
                }

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


                function load() {
                    var r;

                    try {
                        r = exports.storage.getItem('debug');
                    } catch (error) {
                    } // Swallow
                    // XXX (@Qix-) should we be logging these?
                    // If debug isn't set in LS, and we're in Electron, try to load $DEBUG


                    if (!r && typeof process !== 'undefined' && 'env' in process) {
                        r = process.env.DEBUG;
                    }

                    return r;
                }

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


                function localstorage() {
                    try {
                        // TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context
                        // The Browser also has localStorage in the global context.
                        return localStorage;
                    } catch (error) {// Swallow
                        // XXX (@Qix-) should we be logging these?
                    }
                }

                module.exports = require('./common')(exports);
                var formatters = module.exports.formatters;
                /**
                 * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
                 */

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


            }).call(this, {env: {}})

        }, {"./common": 56}],
        56: [function (require, module, exports) {
            "use strict";

            /**
             * This is the common logic for both the Node.js and web browser
             * implementations of `debug()`.
             */
            function setup(env) {
                createDebug.debug = createDebug;
                createDebug.default = createDebug;
                createDebug.coerce = coerce;
                createDebug.disable = disable;
                createDebug.enable = enable;
                createDebug.enabled = enabled;
                createDebug.humanize = require('ms');
                Object.keys(env).forEach(function (key) {
                    createDebug[key] = env[key];
                });
                /**
                 * Active `debug` instances.
                 */

                createDebug.instances = [];
                /**
                 * The currently active debug mode names, and names to skip.
                 */

                createDebug.names = [];
                createDebug.skips = [];
                /**
                 * Map of special "%n" handling functions, for the debug "format" argument.
                 *
                 * Valid key names are a single, lower or upper-case letter, i.e. "n" and "N".
                 */

                createDebug.formatters = {};

                /**
                 * Selects a color for a debug namespace
                 * @param {String} namespace The namespace string for the for the debug instance to be colored
                 * @return {Number|String} An ANSI color code for the given namespace
                 * @api private
                 */

                function selectColor(namespace) {
                    var hash = 0;

                    for (var i = 0; i < namespace.length; i++) {
                        hash = (hash << 5) - hash + namespace.charCodeAt(i);
                        hash |= 0; // Convert to 32bit integer
                    }

                    return createDebug.colors[Math.abs(hash) % createDebug.colors.length];
                }

                createDebug.selectColor = selectColor;

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

                function createDebug(namespace) {
                    var prevTime;

                    function debug() {
                        for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
                            args[_key] = arguments[_key];
                        }

                        // Disabled?
                        if (!debug.enabled) {
                            return;
                        }

                        var self = debug; // Set `diff` timestamp

                        var curr = Number(new Date());
                        var ms = curr - (prevTime || curr);
                        self.diff = ms;
                        self.prev = prevTime;
                        self.curr = curr;
                        prevTime = curr;
                        args[0] = createDebug.coerce(args[0]);

                        if (typeof args[0] !== 'string') {
                            // Anything else let's inspect with %O
                            args.unshift('%O');
                        } // Apply any `formatters` transformations


                        var index = 0;
                        args[0] = args[0].replace(/%([a-zA-Z%])/g, function (match, format) {
                            // If we encounter an escaped % then don't increase the array index
                            if (match === '%%') {
                                return match;
                            }

                            index++;
                            var formatter = createDebug.formatters[format];

                            if (typeof formatter === 'function') {
                                var val = args[index];
                                match = formatter.call(self, val); // Now we need to remove `args[index]` since it's inlined in the `format`

                                args.splice(index, 1);
                                index--;
                            }

                            return match;
                        }); // Apply env-specific formatting (colors, etc.)

                        createDebug.formatArgs.call(self, args);
                        var logFn = self.log || createDebug.log;
                        logFn.apply(self, args);
                    }

                    debug.namespace = namespace;
                    debug.enabled = createDebug.enabled(namespace);
                    debug.useColors = createDebug.useColors();
                    debug.color = selectColor(namespace);
                    debug.destroy = destroy;
                    debug.extend = extend; // Debug.formatArgs = formatArgs;
                    // debug.rawLog = rawLog;
                    // env-specific initialization logic for debug instances

                    if (typeof createDebug.init === 'function') {
                        createDebug.init(debug);
                    }

                    createDebug.instances.push(debug);
                    return debug;
                }

                function destroy() {
                    var index = createDebug.instances.indexOf(this);

                    if (index !== -1) {
                        createDebug.instances.splice(index, 1);
                        return true;
                    }

                    return false;
                }

                function extend(namespace, delimiter) {
                    return createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);
                }

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


                function enable(namespaces) {
                    createDebug.save(namespaces);
                    createDebug.names = [];
                    createDebug.skips = [];
                    var i;
                    var split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
                    var len = split.length;

                    for (i = 0; i < len; i++) {
                        if (!split[i]) {
                            // ignore empty strings
                            continue;
                        }

                        namespaces = split[i].replace(/\*/g, '.*?');

                        if (namespaces[0] === '-') {
                            createDebug.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
                        } else {
                            createDebug.names.push(new RegExp('^' + namespaces + '$'));
                        }
                    }

                    for (i = 0; i < createDebug.instances.length; i++) {
                        var instance = createDebug.instances[i];
                        instance.enabled = createDebug.enabled(instance.namespace);
                    }
                }

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


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

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


                function enabled(name) {
                    if (name[name.length - 1] === '*') {
                        return true;
                    }

                    var i;
                    var len;

                    for (i = 0, len = createDebug.skips.length; i < len; i++) {
                        if (createDebug.skips[i].test(name)) {
                            return false;
                        }
                    }

                    for (i = 0, len = createDebug.names.length; i < len; i++) {
                        if (createDebug.names[i].test(name)) {
                            return true;
                        }
                    }

                    return false;
                }

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


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

                    return val;
                }

                createDebug.enable(createDebug.load());
                return createDebug;
            }

            module.exports = setup;


        }, {"ms": 54}],
        57: [function (require, module, exports) {
            if (typeof Object.create === 'function') {
                // implementation from standard node.js 'util' module
                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 {
                // old school shim for old browsers
                module.exports = function inherits(ctor, superCtor) {
                    ctor.super_ = superCtor
                    var TempCtor = function () {
                    }
                    TempCtor.prototype = superCtor.prototype
                    ctor.prototype = new TempCtor()
                    ctor.prototype.constructor = ctor
                }
            }

        }, {}],
        58: [function (require, module, exports) {
            (function (global) {
                /*! JSON v3.3.2 | http://bestiejs.github.io/json3 | Copyright 2012-2014, Kit Cambridge | http://kit.mit-license.org */
                ;(function () {
                    // Detect the `define` function exposed by asynchronous module loaders. The
                    // strict `define` check is necessary for compatibility with `r.js`.
                    var isLoader = typeof define === "function" && define.amd;

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

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

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

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

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

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

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

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

                        // Test the `Date#getUTC*` methods. Based on work by @Yaffle.
                        var isExtended = new Date(-3509827334573292);
                        try {
                            // The `getUTCFullYear`, `Month`, and `Date` methods return nonsensical
                            // results for certain dates in Opera >= 10.53.
                            isExtended = isExtended.getUTCFullYear() == -109252 && isExtended.getUTCMonth() === 0 && isExtended.getUTCDate() === 1 &&
                                // Safari < 2.0.2 stores the internal millisecond time value correctly,
                                // but clips the values returned by the date methods to the range of
                                // signed 32-bit integers ([-2 ** 31, 2 ** 31 - 1]).
                                isExtended.getUTCHours() == 10 && isExtended.getUTCMinutes() == 37 && isExtended.getUTCSeconds() == 6 && isExtended.getUTCMilliseconds() == 708;
                        } catch (exception) {
                        }

                        // Internal: Determines whether the native `JSON.stringify` and `parse`
                        // implementations are spec-compliant. Based on work by Ken Snyder.
                        function has(name) {
                            if (has[name] !== undef) {
                                // Return cached feature test result.
                                return has[name];
                            }
                            var isSupported;
                            if (name == "bug-string-char-index") {
                                // IE <= 7 doesn't support accessing string characters using square
                                // bracket notation. IE 8 only supports this for primitives.
                                isSupported = "a"[0] != "a";
                            } else if (name == "json") {
                                // Indicates whether both `JSON.stringify` and `JSON.parse` are
                                // supported.
                                isSupported = has("json-stringify") && has("json-parse");
                            } else {
                                var value, serialized = '{"a":[1,true,false,null,"\\u0000\\b\\n\\f\\r\\t"]}';
                                // Test `JSON.stringify`.
                                if (name == "json-stringify") {
                                    var stringify = exports.stringify,
                                        stringifySupported = typeof stringify == "function" && isExtended;
                                    if (stringifySupported) {
                                        // A test function object with a custom `toJSON` method.
                                        (value = function () {
                                            return 1;
                                        }).toJSON = value;
                                        try {
                                            stringifySupported =
                                                // Firefox 3.1b1 and b2 serialize string, number, and boolean
                                                // primitives as object literals.
                                                stringify(0) === "0" &&
                                                // FF 3.1b1, b2, and JSON 2 serialize wrapped primitives as object
                                                // literals.
                                                stringify(new Number()) === "0" &&
                                                stringify(new String()) == '""' &&
                                                // FF 3.1b1, 2 throw an error if the value is `null`, `undefined`, or
                                                // does not define a canonical JSON representation (this applies to
                                                // objects with `toJSON` properties as well, *unless* they are nested
                                                // within an object or array).
                                                stringify(getClass) === undef &&
                                                // IE 8 serializes `undefined` as `"undefined"`. Safari <= 5.1.7 and
                                                // FF 3.1b3 pass this test.
                                                stringify(undef) === undef &&
                                                // Safari <= 5.1.7 and FF 3.1b3 throw `Error`s and `TypeError`s,
                                                // respectively, if the value is omitted entirely.
                                                stringify() === undef &&
                                                // FF 3.1b1, 2 throw an error if the given value is not a number,
                                                // string, array, object, Boolean, or `null` literal. This applies to
                                                // objects with custom `toJSON` methods as well, unless they are nested
                                                // inside object or array literals. YUI 3.0.0b1 ignores custom `toJSON`
                                                // methods entirely.
                                                stringify(value) === "1" &&
                                                stringify([value]) == "[1]" &&
                                                // Prototype <= 1.6.1 serializes `[undefined]` as `"[]"` instead of
                                                // `"[null]"`.
                                                stringify([undef]) == "[null]" &&
                                                // YUI 3.0.0b1 fails to serialize `null` literals.
                                                stringify(null) == "null" &&
                                                // FF 3.1b1, 2 halts serialization if an array contains a function:
                                                // `[1, true, getClass, 1]` serializes as "[1,true,],". FF 3.1b3
                                                // elides non-JSON values from objects and arrays, unless they
                                                // define custom `toJSON` methods.
                                                stringify([undef, getClass, null]) == "[null,null,null]" &&
                                                // Simple serialization test. FF 3.1b1 uses Unicode escape sequences
                                                // where character escape codes are expected (e.g., `\b` => `\u0008`).
                                                stringify({"a": [value, true, false, null, "\x00\b\n\f\r\t"]}) == serialized &&
                                                // FF 3.1b1 and b2 ignore the `filter` and `width` arguments.
                                                stringify(null, value) === "1" &&
                                                stringify([1, 2], null, 1) == "[\n 1,\n 2\n]" &&
                                                // JSON 2, Prototype <= 1.7, and older WebKit builds incorrectly
                                                // serialize extended years.
                                                stringify(new Date(-8.64e15)) == '"-271821-04-20T00:00:00.000Z"' &&
                                                // The milliseconds are optional in ES 5, but required in 5.1.
                                                stringify(new Date(8.64e15)) == '"+275760-09-13T00:00:00.000Z"' &&
                                                // Firefox <= 11.0 incorrectly serializes years prior to 0 as negative
                                                // four-digit years instead of six-digit years. Credits: @Yaffle.
                                                stringify(new Date(-621987552e5)) == '"-000001-01-01T00:00:00.000Z"' &&
                                                // Safari <= 5.1.5 and Opera >= 10.53 incorrectly serialize millisecond
                                                // values less than 1000. Credits: @Yaffle.
                                                stringify(new Date(-1)) == '"1969-12-31T23:59:59.999Z"';
                                        } catch (exception) {
                                            stringifySupported = false;
                                        }
                                    }
                                    isSupported = stringifySupported;
                                }
                                // Test `JSON.parse`.
                                if (name == "json-parse") {
                                    var parse = exports.parse;
                                    if (typeof parse == "function") {
                                        try {
                                            // FF 3.1b1, b2 will throw an exception if a bare literal is provided.
                                            // Conforming implementations should also coerce the initial argument to
                                            // a string prior to parsing.
                                            if (parse("0") === 0 && !parse(false)) {
                                                // Simple parsing test.
                                                value = parse(serialized);
                                                var parseSupported = value["a"].length == 5 && value["a"][0] === 1;
                                                if (parseSupported) {
                                                    try {
                                                        // Safari <= 5.1.2 and FF 3.1b1 allow unescaped tabs in strings.
                                                        parseSupported = !parse('"\t"');
                                                    } catch (exception) {
                                                    }
                                                    if (parseSupported) {
                                                        try {
                                                            // FF 4.0 and 4.0.1 allow leading `+` signs and leading
                                                            // decimal points. FF 4.0, 4.0.1, and IE 9-10 also allow
                                                            // certain octal literals.
                                                            parseSupported = parse("01") !== 1;
                                                        } catch (exception) {
                                                        }
                                                    }
                                                    if (parseSupported) {
                                                        try {
                                                            // FF 4.0, 4.0.1, and Rhino 1.7R3-R4 allow trailing decimal
                                                            // points. These environments, along with FF 3.1b1 and 2,
                                                            // also allow trailing commas in JSON objects and arrays.
                                                            parseSupported = parse("1.") !== 1;
                                                        } catch (exception) {
                                                        }
                                                    }
                                                }
                                            }
                                        } catch (exception) {
                                            parseSupported = false;
                                        }
                                    }
                                    isSupported = parseSupported;
                                }
                            }
                            return has[name] = !!isSupported;
                        }

                        if (!has("json")) {
                            // Common `[[Class]]` name aliases.
                            var functionClass = "[object Function]",
                                dateClass = "[object Date]",
                                numberClass = "[object Number]",
                                stringClass = "[object String]",
                                arrayClass = "[object Array]",
                                booleanClass = "[object Boolean]";

                            // Detect incomplete support for accessing string characters by index.
                            var charIndexBuggy = has("bug-string-char-index");

                            // Define additional utility methods if the `Date` methods are buggy.
                            if (!isExtended) {
                                var floor = Math.floor;
                                // A mapping between the months of the year and the number of days between
                                // January 1st and the first of the respective month.
                                var Months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];
                                // Internal: Calculates the number of days between the Unix epoch and the
                                // first day of the given month.
                                var getDay = function (year, month) {
                                    return Months[month] + 365 * (year - 1970) + floor((year - 1969 + (month = +(month > 1))) / 4) - floor((year - 1901 + month) / 100) + floor((year - 1601 + month) / 400);
                                };
                            }

                            // Internal: Determines if a property is a direct property of the given
                            // object. Delegates to the native `Object#hasOwnProperty` method.
                            if (!(isProperty = objectProto.hasOwnProperty)) {
                                isProperty = function (property) {
                                    var members = {}, constructor;
                                    if ((members.__proto__ = null, members.__proto__ = {
                                        // The *proto* property cannot be set multiple times in recent
                                        // versions of Firefox and SeaMonkey.
                                        "toString": 1
                                    }, members).toString != getClass) {
                                        // Safari <= 2.0.3 doesn't implement `Object#hasOwnProperty`, but
                                        // supports the mutable *proto* property.
                                        isProperty = function (property) {
                                            // Capture and break the object's prototype chain (see section 8.6.2
                                            // of the ES 5.1 spec). The parenthesized expression prevents an
                                            // unsafe transformation by the Closure Compiler.
                                            var original = this.__proto__,
                                                result = property in (this.__proto__ = null, this);
                                            // Restore the original prototype chain.
                                            this.__proto__ = original;
                                            return result;
                                        };
                                    } else {
                                        // Capture a reference to the top-level `Object` constructor.
                                        constructor = members.constructor;
                                        // Use the `constructor` property to simulate `Object#hasOwnProperty` in
                                        // other environments.
                                        isProperty = function (property) {
                                            var parent = (this.constructor || constructor).prototype;
                                            return property in this && !(property in parent && this[property] === parent[property]);
                                        };
                                    }
                                    members = null;
                                    return isProperty.call(this, property);
                                };
                            }

                            // Internal: Normalizes the `for...in` iteration algorithm across
                            // environments. Each enumerated key is yielded to a `callback` function.
                            forEach = function (object, callback) {
                                var size = 0, Properties, members, property;

                                // Tests for bugs in the current environment's `for...in` algorithm. The
                                // `valueOf` property inherits the non-enumerable flag from
                                // `Object.prototype` in older versions of IE, Netscape, and Mozilla.
                                (Properties = function () {
                                    this.valueOf = 0;
                                }).prototype.valueOf = 0;

                                // Iterate over a new instance of the `Properties` class.
                                members = new Properties();
                                for (property in members) {
                                    // Ignore all properties inherited from `Object.prototype`.
                                    if (isProperty.call(members, property)) {
                                        size++;
                                    }
                                }
                                Properties = members = null;

                                // Normalize the iteration algorithm.
                                if (!size) {
                                    // A list of non-enumerable properties inherited from `Object.prototype`.
                                    members = ["valueOf", "toString", "toLocaleString", "propertyIsEnumerable", "isPrototypeOf", "hasOwnProperty", "constructor"];
                                    // IE <= 8, Mozilla 1.0, and Netscape 6.2 ignore shadowed non-enumerable
                                    // properties.
                                    forEach = function (object, callback) {
                                        var isFunction = getClass.call(object) == functionClass, property, length;
                                        var hasProperty = !isFunction && typeof object.constructor != "function" && objectTypes[typeof object.hasOwnProperty] && object.hasOwnProperty || isProperty;
                                        for (property in object) {
                                            // Gecko <= 1.0 enumerates the `prototype` property of functions under
                                            // certain conditions; IE does not.
                                            if (!(isFunction && property == "prototype") && hasProperty.call(object, property)) {
                                                callback(property);
                                            }
                                        }
                                        // Manually invoke the callback for each non-enumerable property.
                                        for (length = members.length; property = members[--length]; hasProperty.call(object, property) && callback(property)) ;
                                    };
                                } else if (size == 2) {
                                    // Safari <= 2.0.4 enumerates shadowed properties twice.
                                    forEach = function (object, callback) {
                                        // Create a set of iterated properties.
                                        var members = {}, isFunction = getClass.call(object) == functionClass, property;
                                        for (property in object) {
                                            // Store each property name to prevent double enumeration. The
                                            // `prototype` property of functions is not enumerated due to cross-
                                            // environment inconsistencies.
                                            if (!(isFunction && property == "prototype") && !isProperty.call(members, property) && (members[property] = 1) && isProperty.call(object, property)) {
                                                callback(property);
                                            }
                                        }
                                    };
                                } else {
                                    // No bugs detected; use the standard `for...in` algorithm.
                                    forEach = function (object, callback) {
                                        var isFunction = getClass.call(object) == functionClass, property,
                                            isConstructor;
                                        for (property in object) {
                                            if (!(isFunction && property == "prototype") && isProperty.call(object, property) && !(isConstructor = property === "constructor")) {
                                                callback(property);
                                            }
                                        }
                                        // Manually invoke the callback for the `constructor` property due to
                                        // cross-environment inconsistencies.
                                        if (isConstructor || isProperty.call(object, (property = "constructor"))) {
                                            callback(property);
                                        }
                                    };
                                }
                                return forEach(object, callback);
                            };

                            // Public: Serializes a JavaScript `value` as a JSON string. The optional
                            // `filter` argument may specify either a function that alters how object and
                            // array members are serialized, or an array of strings and numbers that
                            // indicates which properties should be serialized. The optional `width`
                            // argument may be either a string or number that specifies the indentation
                            // level of the output.
                            if (!has("json-stringify")) {
                                // Internal: A map of control characters and their escaped equivalents.
                                var Escapes = {
                                    92: "\\\\",
                                    34: '\\"',
                                    8: "\\b",
                                    12: "\\f",
                                    10: "\\n",
                                    13: "\\r",
                                    9: "\\t"
                                };

                                // Internal: Converts `value` into a zero-padded string such that its
                                // length is at least equal to `width`. The `width` must be <= 6.
                                var leadingZeroes = "000000";
                                var toPaddedString = function (width, value) {
                                    // The `|| 0` expression is necessary to work around a bug in
                                    // Opera <= 7.54u2 where `0 == -0`, but `String(-0) !== "0"`.
                                    return (leadingZeroes + (value || 0)).slice(-width);
                                };

                                // Internal: Double-quotes a string `value`, replacing all ASCII control
                                // characters (characters with code unit values between 0 and 31) with
                                // their escaped equivalents. This is an implementation of the
                                // `Quote(value)` operation defined in ES 5.1 section 15.12.3.
                                var unicodePrefix = "\\u00";
                                var quote = function (value) {
                                    var result = '"', index = 0, length = value.length,
                                        useCharIndex = !charIndexBuggy || length > 10;
                                    var symbols = useCharIndex && (charIndexBuggy ? value.split("") : value);
                                    for (; index < length; index++) {
                                        var charCode = value.charCodeAt(index);
                                        // If the character is a control character, append its Unicode or
                                        // shorthand escape sequence; otherwise, append the character as-is.
                                        switch (charCode) {
                                            case 8:
                                            case 9:
                                            case 10:
                                            case 12:
                                            case 13:
                                            case 34:
                                            case 92:
                                                result += Escapes[charCode];
                                                break;
                                            default:
                                                if (charCode < 32) {
                                                    result += unicodePrefix + toPaddedString(2, charCode.toString(16));
                                                    break;
                                                }
                                                result += useCharIndex ? symbols[index] : value.charAt(index);
                                        }
                                    }
                                    return result + '"';
                                };

                                // Internal: Recursively serializes an object. Implements the
                                // `Str(key, holder)`, `JO(value)`, and `JA(value)` operations.
                                var serialize = function (property, object, callback, properties, whitespace, indentation, stack) {
                                    var value, className, year, month, date, time, hours, minutes, seconds,
                                        milliseconds, results, element, index, length, prefix, result;
                                    try {
                                        // Necessary for host object support.
                                        value = object[property];
                                    } catch (exception) {
                                    }
                                    if (typeof value == "object" && value) {
                                        className = getClass.call(value);
                                        if (className == dateClass && !isProperty.call(value, "toJSON")) {
                                            if (value > -1 / 0 && value < 1 / 0) {
                                                // Dates are serialized according to the `Date#toJSON` method
                                                // specified in ES 5.1 section 15.9.5.44. See section 15.9.1.15
                                                // for the ISO 8601 date time string format.
                                                if (getDay) {
                                                    // Manually compute the year, month, date, hours, minutes,
                                                    // seconds, and milliseconds if the `getUTC*` methods are
                                                    // buggy. Adapted from @Yaffle's `date-shim` project.
                                                    date = floor(value / 864e5);
                                                    for (year = floor(date / 365.2425) + 1970 - 1; getDay(year + 1, 0) <= date; year++) ;
                                                    for (month = floor((date - getDay(year, 0)) / 30.42); getDay(year, month + 1) <= date; month++) ;
                                                    date = 1 + date - getDay(year, month);
                                                    // The `time` value specifies the time within the day (see ES
                                                    // 5.1 section 15.9.1.2). The formula `(A % B + B) % B` is used
                                                    // to compute `A modulo B`, as the `%` operator does not
                                                    // correspond to the `modulo` operation for negative numbers.
                                                    time = (value % 864e5 + 864e5) % 864e5;
                                                    // The hours, minutes, seconds, and milliseconds are obtained by
                                                    // decomposing the time within the day. See section 15.9.1.10.
                                                    hours = floor(time / 36e5) % 24;
                                                    minutes = floor(time / 6e4) % 60;
                                                    seconds = floor(time / 1e3) % 60;
                                                    milliseconds = time % 1e3;
                                                } else {
                                                    year = value.getUTCFullYear();
                                                    month = value.getUTCMonth();
                                                    date = value.getUTCDate();
                                                    hours = value.getUTCHours();
                                                    minutes = value.getUTCMinutes();
                                                    seconds = value.getUTCSeconds();
                                                    milliseconds = value.getUTCMilliseconds();
                                                }
                                                // Serialize extended years correctly.
                                                value = (year <= 0 || year >= 1e4 ? (year < 0 ? "-" : "+") + toPaddedString(6, year < 0 ? -year : year) : toPaddedString(4, year)) +
                                                    "-" + toPaddedString(2, month + 1) + "-" + toPaddedString(2, date) +
                                                    // Months, dates, hours, minutes, and seconds should have two
                                                    // digits; milliseconds should have three.
                                                    "T" + toPaddedString(2, hours) + ":" + toPaddedString(2, minutes) + ":" + toPaddedString(2, seconds) +
                                                    // Milliseconds are optional in ES 5.0, but required in 5.1.
                                                    "." + toPaddedString(3, milliseconds) + "Z";
                                            } else {
                                                value = null;
                                            }
                                        } else if (typeof value.toJSON == "function" && ((className != numberClass && className != stringClass && className != arrayClass) || isProperty.call(value, "toJSON"))) {
                                            // Prototype <= 1.6.1 adds non-standard `toJSON` methods to the
                                            // `Number`, `String`, `Date`, and `Array` prototypes. JSON 3
                                            // ignores all `toJSON` methods on these objects unless they are
                                            // defined directly on an instance.
                                            value = value.toJSON(property);
                                        }
                                    }
                                    if (callback) {
                                        // If a replacement function was provided, call it to obtain the value
                                        // for serialization.
                                        value = callback.call(object, property, value);
                                    }
                                    if (value === null) {
                                        return "null";
                                    }
                                    className = getClass.call(value);
                                    if (className == booleanClass) {
                                        // Booleans are represented literally.
                                        return "" + value;
                                    } else if (className == numberClass) {
                                        // JSON numbers must be finite. `Infinity` and `NaN` are serialized as
                                        // `"null"`.
                                        return value > -1 / 0 && value < 1 / 0 ? "" + value : "null";
                                    } else if (className == stringClass) {
                                        // Strings are double-quoted and escaped.
                                        return quote("" + value);
                                    }
                                    // Recursively serialize objects and arrays.
                                    if (typeof value == "object") {
                                        // Check for cyclic structures. This is a linear search; performance
                                        // is inversely proportional to the number of unique nested objects.
                                        for (length = stack.length; length--;) {
                                            if (stack[length] === value) {
                                                // Cyclic structures cannot be serialized by `JSON.stringify`.
                                                throw TypeError();
                                            }
                                        }
                                        // Add the object to the stack of traversed objects.
                                        stack.push(value);
                                        results = [];
                                        // Save the current indentation level and indent one additional level.
                                        prefix = indentation;
                                        indentation += whitespace;
                                        if (className == arrayClass) {
                                            // Recursively serialize array elements.
                                            for (index = 0, length = value.length; index < length; index++) {
                                                element = serialize(index, value, callback, properties, whitespace, indentation, stack);
                                                results.push(element === undef ? "null" : element);
                                            }
                                            result = results.length ? (whitespace ? "[\n" + indentation + results.join(",\n" + indentation) + "\n" + prefix + "]" : ("[" + results.join(",") + "]")) : "[]";
                                        } else {
                                            // Recursively serialize object members. Members are selected from
                                            // either a user-specified list of property names, or the object
                                            // itself.
                                            forEach(properties || value, function (property) {
                                                var element = serialize(property, value, callback, properties, whitespace, indentation, stack);
                                                if (element !== undef) {
                                                    // According to ES 5.1 section 15.12.3: "If `gap` {whitespace}
                                                    // is not the empty string, let `member` {quote(property) + ":"}
                                                    // be the concatenation of `member` and the `space` character."
                                                    // The "`space` character" refers to the literal space
                                                    // character, not the `space` {width} argument provided to
                                                    // `JSON.stringify`.
                                                    results.push(quote(property) + ":" + (whitespace ? " " : "") + element);
                                                }
                                            });
                                            result = results.length ? (whitespace ? "{\n" + indentation + results.join(",\n" + indentation) + "\n" + prefix + "}" : ("{" + results.join(",") + "}")) : "{}";
                                        }
                                        // Remove the object from the traversed object stack.
                                        stack.pop();
                                        return result;
                                    }
                                };

                                // Public: `JSON.stringify`. See ES 5.1 section 15.12.3.
                                exports.stringify = function (source, filter, width) {
                                    var whitespace, callback, properties, className;
                                    if (objectTypes[typeof filter] && filter) {
                                        if ((className = getClass.call(filter)) == functionClass) {
                                            callback = filter;
                                        } else if (className == arrayClass) {
                                            // Convert the property names array into a makeshift set.
                                            properties = {};
                                            for (var index = 0, length = filter.length, value; index < length; value = filter[index++], ((className = getClass.call(value)), className == stringClass || className == numberClass) && (properties[value] = 1)) ;
                                        }
                                    }
                                    if (width) {
                                        if ((className = getClass.call(width)) == numberClass) {
                                            // Convert the `width` to an integer and create a string containing
                                            // `width` number of space characters.
                                            if ((width -= width % 1) > 0) {
                                                for (whitespace = "", width > 10 && (width = 10); whitespace.length < width; whitespace += " ") ;
                                            }
                                        } else if (className == stringClass) {
                                            whitespace = width.length <= 10 ? width : width.slice(0, 10);
                                        }
                                    }
                                    // Opera <= 7.54u2 discards the values associated with empty string keys
                                    // (`""`) only if they are used directly within an object member list
                                    // (e.g., `!("" in { "": 1})`).
                                    return serialize("", (value = {}, value[""] = source, value), callback, properties, whitespace, "", []);
                                };
                            }

                            // Public: Parses a JSON source string.
                            if (!has("json-parse")) {
                                var fromCharCode = String.fromCharCode;

                                // Internal: A map of escaped control characters and their unescaped
                                // equivalents.
                                var Unescapes = {
                                    92: "\\",
                                    34: '"',
                                    47: "/",
                                    98: "\b",
                                    116: "\t",
                                    110: "\n",
                                    102: "\f",
                                    114: "\r"
                                };

                                // Internal: Stores the parser state.
                                var Index, Source;

                                // Internal: Resets the parser state and throws a `SyntaxError`.
                                var abort = function () {
                                    Index = Source = null;
                                    throw SyntaxError();
                                };

                                // Internal: Returns the next token, or `"$"` if the parser has reached
                                // the end of the source string. A token may be a string, number, `null`
                                // literal, or Boolean literal.
                                var lex = function () {
                                    var source = Source, length = source.length, value, begin, position, isSigned,
                                        charCode;
                                    while (Index < length) {
                                        charCode = source.charCodeAt(Index);
                                        switch (charCode) {
                                            case 9:
                                            case 10:
                                            case 13:
                                            case 32:
                                                // Skip whitespace tokens, including tabs, carriage returns, line
                                                // feeds, and space characters.
                                                Index++;
                                                break;
                                            case 123:
                                            case 125:
                                            case 91:
                                            case 93:
                                            case 58:
                                            case 44:
                                                // Parse a punctuator token (`{`, `}`, `[`, `]`, `:`, or `,`) at
                                                // the current position.
                                                value = charIndexBuggy ? source.charAt(Index) : source[Index];
                                                Index++;
                                                return value;
                                            case 34:
                                                // `"` delimits a JSON string; advance to the next character and
                                                // begin parsing the string. String tokens are prefixed with the
                                                // sentinel `@` character to distinguish them from punctuators and
                                                // end-of-string tokens.
                                                for (value = "@", Index++; Index < length;) {
                                                    charCode = source.charCodeAt(Index);
                                                    if (charCode < 32) {
                                                        // Unescaped ASCII control characters (those with a code unit
                                                        // less than the space character) are not permitted.
                                                        abort();
                                                    } else if (charCode == 92) {
                                                        // A reverse solidus (`\`) marks the beginning of an escaped
                                                        // control character (including `"`, `\`, and `/`) or Unicode
                                                        // escape sequence.
                                                        charCode = source.charCodeAt(++Index);
                                                        switch (charCode) {
                                                            case 92:
                                                            case 34:
                                                            case 47:
                                                            case 98:
                                                            case 116:
                                                            case 110:
                                                            case 102:
                                                            case 114:
                                                                // Revive escaped control characters.
                                                                value += Unescapes[charCode];
                                                                Index++;
                                                                break;
                                                            case 117:
                                                                // `\u` marks the beginning of a Unicode escape sequence.
                                                                // Advance to the first character and validate the
                                                                // four-digit code point.
                                                                begin = ++Index;
                                                                for (position = Index + 4; Index < position; Index++) {
                                                                    charCode = source.charCodeAt(Index);
                                                                    // A valid sequence comprises four hexdigits (case-
                                                                    // insensitive) that form a single hexadecimal value.
                                                                    if (!(charCode >= 48 && charCode <= 57 || charCode >= 97 && charCode <= 102 || charCode >= 65 && charCode <= 70)) {
                                                                        // Invalid Unicode escape sequence.
                                                                        abort();
                                                                    }
                                                                }
                                                                // Revive the escaped character.
                                                                value += fromCharCode("0x" + source.slice(begin, Index));
                                                                break;
                                                            default:
                                                                // Invalid escape sequence.
                                                                abort();
                                                        }
                                                    } else {
                                                        if (charCode == 34) {
                                                            // An unescaped double-quote character marks the end of the
                                                            // string.
                                                            break;
                                                        }
                                                        charCode = source.charCodeAt(Index);
                                                        begin = Index;
                                                        // Optimize for the common case where a string is valid.
                                                        while (charCode >= 32 && charCode != 92 && charCode != 34) {
                                                            charCode = source.charCodeAt(++Index);
                                                        }
                                                        // Append the string as-is.
                                                        value += source.slice(begin, Index);
                                                    }
                                                }
                                                if (source.charCodeAt(Index) == 34) {
                                                    // Advance to the next character and return the revived string.
                                                    Index++;
                                                    return value;
                                                }
                                                // Unterminated string.
                                                abort();
                                            default:
                                                // Parse numbers and literals.
                                                begin = Index;
                                                // Advance past the negative sign, if one is specified.
                                                if (charCode == 45) {
                                                    isSigned = true;
                                                    charCode = source.charCodeAt(++Index);
                                                }
                                                // Parse an integer or floating-point value.
                                                if (charCode >= 48 && charCode <= 57) {
                                                    // Leading zeroes are interpreted as octal literals.
                                                    if (charCode == 48 && ((charCode = source.charCodeAt(Index + 1)), charCode >= 48 && charCode <= 57)) {
                                                        // Illegal octal literal.
                                                        abort();
                                                    }
                                                    isSigned = false;
                                                    // Parse the integer component.
                                                    for (; Index < length && ((charCode = source.charCodeAt(Index)), charCode >= 48 && charCode <= 57); Index++) ;
                                                    // Floats cannot contain a leading decimal point; however, this
                                                    // case is already accounted for by the parser.
                                                    if (source.charCodeAt(Index) == 46) {
                                                        position = ++Index;
                                                        // Parse the decimal component.
                                                        for (; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++) ;
                                                        if (position == Index) {
                                                            // Illegal trailing decimal.
                                                            abort();
                                                        }
                                                        Index = position;
                                                    }
                                                    // Parse exponents. The `e` denoting the exponent is
                                                    // case-insensitive.
                                                    charCode = source.charCodeAt(Index);
                                                    if (charCode == 101 || charCode == 69) {
                                                        charCode = source.charCodeAt(++Index);
                                                        // Skip past the sign following the exponent, if one is
                                                        // specified.
                                                        if (charCode == 43 || charCode == 45) {
                                                            Index++;
                                                        }
                                                        // Parse the exponential component.
                                                        for (position = Index; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++) ;
                                                        if (position == Index) {
                                                            // Illegal empty exponent.
                                                            abort();
                                                        }
                                                        Index = position;
                                                    }
                                                    // Coerce the parsed value to a JavaScript number.
                                                    return +source.slice(begin, Index);
                                                }
                                                // A negative sign may only precede numbers.
                                                if (isSigned) {
                                                    abort();
                                                }
                                                // `true`, `false`, and `null` literals.
                                                if (source.slice(Index, Index + 4) == "true") {
                                                    Index += 4;
                                                    return true;
                                                } else if (source.slice(Index, Index + 5) == "false") {
                                                    Index += 5;
                                                    return false;
                                                } else if (source.slice(Index, Index + 4) == "null") {
                                                    Index += 4;
                                                    return null;
                                                }
                                                // Unrecognized token.
                                                abort();
                                        }
                                    }
                                    // Return the sentinel `$` character if the parser has reached the end
                                    // of the source string.
                                    return "$";
                                };

                                // Internal: Parses a JSON `value` token.
                                var get = function (value) {
                                    var results, hasMembers;
                                    if (value == "$") {
                                        // Unexpected end of input.
                                        abort();
                                    }
                                    if (typeof value == "string") {
                                        if ((charIndexBuggy ? value.charAt(0) : value[0]) == "@") {
                                            // Remove the sentinel `@` character.
                                            return value.slice(1);
                                        }
                                        // Parse object and array literals.
                                        if (value == "[") {
                                            // Parses a JSON array, returning a new JavaScript array.
                                            results = [];
                                            for (; ; hasMembers || (hasMembers = true)) {
                                                value = lex();
                                                // A closing square bracket marks the end of the array literal.
                                                if (value == "]") {
                                                    break;
                                                }
                                                // If the array literal contains elements, the current token
                                                // should be a comma separating the previous element from the
                                                // next.
                                                if (hasMembers) {
                                                    if (value == ",") {
                                                        value = lex();
                                                        if (value == "]") {
                                                            // Unexpected trailing `,` in array literal.
                                                            abort();
                                                        }
                                                    } else {
                                                        // A `,` must separate each array element.
                                                        abort();
                                                    }
                                                }
                                                // Elisions and leading commas are not permitted.
                                                if (value == ",") {
                                                    abort();
                                                }
                                                results.push(get(value));
                                            }
                                            return results;
                                        } else if (value == "{") {
                                            // Parses a JSON object, returning a new JavaScript object.
                                            results = {};
                                            for (; ; hasMembers || (hasMembers = true)) {
                                                value = lex();
                                                // A closing curly brace marks the end of the object literal.
                                                if (value == "}") {
                                                    break;
                                                }
                                                // If the object literal contains members, the current token
                                                // should be a comma separator.
                                                if (hasMembers) {
                                                    if (value == ",") {
                                                        value = lex();
                                                        if (value == "}") {
                                                            // Unexpected trailing `,` in object literal.
                                                            abort();
                                                        }
                                                    } else {
                                                        // A `,` must separate each object member.
                                                        abort();
                                                    }
                                                }
                                                // Leading commas are not permitted, object property names must be
                                                // double-quoted strings, and a `:` must separate each property
                                                // name and value.
                                                if (value == "," || typeof value != "string" || (charIndexBuggy ? value.charAt(0) : value[0]) != "@" || lex() != ":") {
                                                    abort();
                                                }
                                                results[value.slice(1)] = get(lex());
                                            }
                                            return results;
                                        }
                                        // Unexpected token encountered.
                                        abort();
                                    }
                                    return value;
                                };

                                // Internal: Updates a traversed object member.
                                var update = function (source, property, callback) {
                                    var element = walk(source, property, callback);
                                    if (element === undef) {
                                        delete source[property];
                                    } else {
                                        source[property] = element;
                                    }
                                };

                                // Internal: Recursively traverses a parsed JSON object, invoking the
                                // `callback` function for each value. This is an implementation of the
                                // `Walk(holder, name)` operation defined in ES 5.1 section 15.12.2.
                                var walk = function (source, property, callback) {
                                    var value = source[property], length;
                                    if (typeof value == "object" && value) {
                                        // `forEach` can't be used to traverse an array in Opera <= 8.54
                                        // because its `Object#hasOwnProperty` implementation returns `false`
                                        // for array indices (e.g., `![1, 2, 3].hasOwnProperty("0")`).
                                        if (getClass.call(value) == arrayClass) {
                                            for (length = value.length; length--;) {
                                                update(value, length, callback);
                                            }
                                        } else {
                                            forEach(value, function (property) {
                                                update(value, property, callback);
                                            });
                                        }
                                    }
                                    return callback.call(source, property, value);
                                };

                                // Public: `JSON.parse`. See ES 5.1 section 15.12.2.
                                exports.parse = function (source, callback) {
                                    var result, value;
                                    Index = 0;
                                    Source = "" + source;
                                    result = get(lex());
                                    // If a JSON string contains multiple tokens, it is invalid.
                                    if (lex() != "$") {
                                        abort();
                                    }
                                    // Reset the parser state.
                                    Index = Source = null;
                                    return callback && getClass.call(callback) == functionClass ? walk((value = {}, value[""] = result, value), "", callback) : result;
                                };
                            }
                        }

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

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

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

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

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

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

        }, {}],
        59: [function (require, module, exports) {
            'use strict';

            var has = Object.prototype.hasOwnProperty;

            /**
             * Decode a URI encoded string.
             *
             * @param {String} input The URI encoded string.
             * @returns {String} The decoded string.
             * @api private
             */
            function decode(input) {
                return decodeURIComponent(input.replace(/\+/g, ' '));
            }

            /**
             * Simple query string parser.
             *
             * @param {String} query The query string that needs to be parsed.
             * @returns {Object}
             * @api public
             */
            function querystring(query) {
                var parser = /([^=?&]+)=?([^&]*)/g
                    , result = {}
                    , part;

                while (part = parser.exec(query)) {
                    var key = decode(part[1])
                        , value = decode(part[2]);

                    //
                    // Prevent overriding of existing properties. This ensures that build-in
                    // methods like `toString` or __proto__ are not overriden by malicious
                    // querystrings.
                    //
                    if (key in result) continue;
                    result[key] = value;
                }

                return result;
            }

            /**
             * Transform a query string to an object.
             *
             * @param {Object} obj Object that should be transformed.
             * @param {String} prefix Optional prefix.
             * @returns {String}
             * @api public
             */
            function querystringify(obj, prefix) {
                prefix = prefix || '';

                var pairs = [];

                //
                // Optionally prefix with a '?' if needed
                //
                if ('string' !== typeof prefix) prefix = '?';

                for (var key in obj) {
                    if (has.call(obj, key)) {
                        pairs.push(encodeURIComponent(key) + '=' + encodeURIComponent(obj[key]));
                    }
                }

                return pairs.length ? prefix + pairs.join('&') : '';
            }

//
// Expose the module.
//
            exports.stringify = querystringify;
            exports.parse = querystring;

        }, {}],
        60: [function (require, module, exports) {
            'use strict';

            /**
             * Check if we're required to add a port number.
             *
             * @see https://url.spec.whatwg.org/#default-port
             * @param {Number|String} port Port number we need to check
             * @param {String} protocol Protocol we need to check against.
             * @returns {Boolean} Is it a default port for the given protocol
             * @api private
             */
            module.exports = function required(port, protocol) {
                protocol = protocol.split(':')[0];
                port = +port;

                if (!port) return false;

                switch (protocol) {
                    case 'http':
                    case 'ws':
                        return port !== 80;

                    case 'https':
                    case 'wss':
                        return port !== 443;

                    case 'ftp':
                        return port !== 21;

                    case 'gopher':
                        return port !== 70;

                    case 'file':
                        return false;
                }

                return port !== 0;
            };

        }, {}],
        61: [function (require, module, exports) {
            (function (global) {
                'use strict';

                var required = require('requires-port')
                    , qs = require('querystringify')
                    , protocolre = /^([a-z][a-z0-9.+-]*:)?(\/\/)?([\S\s]*)/i
                    , slashes = /^[A-Za-z][A-Za-z0-9+-.]*:\/\//;

                /**
                 * These are the parse rules for the URL parser, it informs the parser
                 * about:
                 *
                 * 0. The char it Needs to parse, if it's a string it should be done using
                 *    indexOf, RegExp using exec and NaN means set as current value.
                 * 1. The property we should set when parsing this value.
                 * 2. Indication if it's backwards or forward parsing, when set as number it's
                 *    the value of extra chars that should be split off.
                 * 3. Inherit from location if non existing in the parser.
                 * 4. `toLowerCase` the resulting value.
                 */
                var rules = [
                    ['#', 'hash'],                        // Extract from the back.
                    ['?', 'query'],                       // Extract from the back.
                    function sanitize(address) {          // Sanitize what is left of the address
                        return address.replace('\\', '/');
                    },
                    ['/', 'pathname'],                    // Extract from the back.
                    ['@', 'auth', 1],                     // Extract from the front.
                    [NaN, 'host', undefined, 1, 1],       // Set left over value.
                    [/:(\d+)$/, 'port', undefined, 1],    // RegExp the back.
                    [NaN, 'hostname', undefined, 1, 1]    // Set left over.
                ];

                /**
                 * These properties should not be copied or inherited from. This is only needed
                 * for all non blob URL's as a blob URL does not include a hash, only the
                 * origin.
                 *
                 * @type {Object}
                 * @private
                 */
                var ignore = {hash: 1, query: 1};

                /**
                 * The location object differs when your code is loaded through a normal page,
                 * Worker or through a worker using a blob. And with the blobble begins the
                 * trouble as the location object will contain the URL of the blob, not the
                 * location of the page where our code is loaded in. The actual origin is
                 * encoded in the `pathname` so we can thankfully generate a good "default"
                 * location from it so we can generate proper relative URL's again.
                 *
                 * @param {Object|String} loc Optional default location object.
                 * @returns {Object} lolcation object.
                 * @public
                 */
                function lolcation(loc) {
                    var location = global && global.location || {};
                    loc = loc || location;

                    var finaldestination = {}
                        , type = typeof loc
                        , key;

                    if ('blob:' === loc.protocol) {
                        finaldestination = new Url(unescape(loc.pathname), {});
                    } else if ('string' === type) {
                        finaldestination = new Url(loc, {});
                        for (key in ignore) delete finaldestination[key];
                    } else if ('object' === type) {
                        for (key in loc) {
                            if (key in ignore) continue;
                            finaldestination[key] = loc[key];
                        }

                        if (finaldestination.slashes === undefined) {
                            finaldestination.slashes = slashes.test(loc.href);
                        }
                    }

                    return finaldestination;
                }

                /**
                 * @typedef ProtocolExtract
                 * @type Object
                 * @property {String} protocol Protocol matched in the URL, in lowercase.
                 * @property {Boolean} slashes `true` if protocol is followed by "//", else `false`.
                 * @property {String} rest Rest of the URL that is not part of the protocol.
                 */

                /**
                 * Extract protocol information from a URL with/without double slash ("//").
                 *
                 * @param {String} address URL we want to extract from.
                 * @return {ProtocolExtract} Extracted information.
                 * @private
                 */
                function extractProtocol(address) {
                    var match = protocolre.exec(address);

                    return {
                        protocol: match[1] ? match[1].toLowerCase() : '',
                        slashes: !!match[2],
                        rest: match[3]
                    };
                }

                /**
                 * Resolve a relative URL pathname against a base URL pathname.
                 *
                 * @param {String} relative Pathname of the relative URL.
                 * @param {String} base Pathname of the base URL.
                 * @return {String} Resolved pathname.
                 * @private
                 */
                function resolve(relative, base) {
                    var path = (base || '/').split('/').slice(0, -1).concat(relative.split('/'))
                        , i = path.length
                        , last = path[i - 1]
                        , unshift = false
                        , up = 0;

                    while (i--) {
                        if (path[i] === '.') {
                            path.splice(i, 1);
                        } else if (path[i] === '..') {
                            path.splice(i, 1);
                            up++;
                        } else if (up) {
                            if (i === 0) unshift = true;
                            path.splice(i, 1);
                            up--;
                        }
                    }

                    if (unshift) path.unshift('');
                    if (last === '.' || last === '..') path.push('');

                    return path.join('/');
                }

                /**
                 * The actual URL instance. Instead of returning an object we've opted-in to
                 * create an actual constructor as it's much more memory efficient and
                 * faster and it pleases my OCD.
                 *
                 * It is worth noting that we should not use `URL` as class name to prevent
                 * clashes with the global URL instance that got introduced in browsers.
                 *
                 * @constructor
                 * @param {String} address URL we want to parse.
                 * @param {Object|String} location Location defaults for relative paths.
                 * @param {Boolean|Function} parser Parser for the query string.
                 * @private
                 */
                function Url(address, location, parser) {
                    if (!(this instanceof Url)) {
                        return new Url(address, location, parser);
                    }

                    var relative, extracted, parse, instruction, index, key
                        , instructions = rules.slice()
                        , type = typeof location
                        , url = this
                        , i = 0;

                    //
                    // The following if statements allows this module two have compatibility with
                    // 2 different API:
                    //
                    // 1. Node.js's `url.parse` api which accepts a URL, boolean as arguments
                    //    where the boolean indicates that the query string should also be parsed.
                    //
                    // 2. The `URL` interface of the browser which accepts a URL, object as
                    //    arguments. The supplied object will be used as default values / fall-back
                    //    for relative paths.
                    //
                    if ('object' !== type && 'string' !== type) {
                        parser = location;
                        location = null;
                    }

                    if (parser && 'function' !== typeof parser) parser = qs.parse;

                    location = lolcation(location);

                    //
                    // Extract protocol information before running the instructions.
                    //
                    extracted = extractProtocol(address || '');
                    relative = !extracted.protocol && !extracted.slashes;
                    url.slashes = extracted.slashes || relative && location.slashes;
                    url.protocol = extracted.protocol || location.protocol || '';
                    address = extracted.rest;

                    //
                    // When the authority component is absent the URL starts with a path
                    // component.
                    //
                    if (!extracted.slashes) instructions[3] = [/(.*)/, 'pathname'];

                    for (; i < instructions.length; i++) {
                        instruction = instructions[i];

                        if (typeof instruction === 'function') {
                            address = instruction(address);
                            continue;
                        }

                        parse = instruction[0];
                        key = instruction[1];

                        if (parse !== parse) {
                            url[key] = address;
                        } else if ('string' === typeof parse) {
                            if (~(index = address.indexOf(parse))) {
                                if ('number' === typeof instruction[2]) {
                                    url[key] = address.slice(0, index);
                                    address = address.slice(index + instruction[2]);
                                } else {
                                    url[key] = address.slice(index);
                                    address = address.slice(0, index);
                                }
                            }
                        } else if ((index = parse.exec(address))) {
                            url[key] = index[1];
                            address = address.slice(0, index.index);
                        }

                        url[key] = url[key] || (
                            relative && instruction[3] ? location[key] || '' : ''
                        );

                        //
                        // Hostname, host and protocol should be lowercased so they can be used to
                        // create a proper `origin`.
                        //
                        if (instruction[4]) url[key] = url[key].toLowerCase();
                    }

                    //
                    // Also parse the supplied query string in to an object. If we're supplied
                    // with a custom parser as function use that instead of the default build-in
                    // parser.
                    //
                    if (parser) url.query = parser(url.query);

                    //
                    // If the URL is relative, resolve the pathname against the base URL.
                    //
                    if (
                        relative
                        && location.slashes
                        && url.pathname.charAt(0) !== '/'
                        && (url.pathname !== '' || location.pathname !== '')
                    ) {
                        url.pathname = resolve(url.pathname, location.pathname);
                    }

                    //
                    // We should not add port numbers if they are already the default port number
                    // for a given protocol. As the host also contains the port number we're going
                    // override it with the hostname which contains no port number.
                    //
                    if (!required(url.port, url.protocol)) {
                        url.host = url.hostname;
                        url.port = '';
                    }

                    //
                    // Parse down the `auth` for the username and password.
                    //
                    url.username = url.password = '';
                    if (url.auth) {
                        instruction = url.auth.split(':');
                        url.username = instruction[0] || '';
                        url.password = instruction[1] || '';
                    }

                    url.origin = url.protocol && url.host && url.protocol !== 'file:'
                        ? url.protocol + '//' + url.host
                        : 'null';

                    //
                    // The href is just the compiled result.
                    //
                    url.href = url.toString();
                }

                /**
                 * This is convenience method for changing properties in the URL instance to
                 * insure that they all propagate correctly.
                 *
                 * @param {String} part          Property we need to adjust.
                 * @param {Mixed} value          The newly assigned value.
                 * @param {Boolean|Function} fn  When setting the query, it will be the function
                 *                               used to parse the query.
                 *                               When setting the protocol, double slash will be
                 *                               removed from the final url if it is true.
                 * @returns {URL} URL instance for chaining.
                 * @public
                 */
                function set(part, value, fn) {
                    var url = this;

                    switch (part) {
                        case 'query':
                            if ('string' === typeof value && value.length) {
                                value = (fn || qs.parse)(value);
                            }

                            url[part] = value;
                            break;

                        case 'port':
                            url[part] = value;

                            if (!required(value, url.protocol)) {
                                url.host = url.hostname;
                                url[part] = '';
                            } else if (value) {
                                url.host = url.hostname + ':' + value;
                            }

                            break;

                        case 'hostname':
                            url[part] = value;

                            if (url.port) value += ':' + url.port;
                            url.host = value;
                            break;

                        case 'host':
                            url[part] = value;

                            if (/:\d+$/.test(value)) {
                                value = value.split(':');
                                url.port = value.pop();
                                url.hostname = value.join(':');
                            } else {
                                url.hostname = value;
                                url.port = '';
                            }

                            break;

                        case 'protocol':
                            url.protocol = value.toLowerCase();
                            url.slashes = !fn;
                            break;

                        case 'pathname':
                        case 'hash':
                            if (value) {
                                var char = part === 'pathname' ? '/' : '#';
                                url[part] = value.charAt(0) !== char ? char + value : value;
                            } else {
                                url[part] = value;
                            }
                            break;

                        default:
                            url[part] = value;
                    }

                    for (var i = 0; i < rules.length; i++) {
                        var ins = rules[i];

                        if (ins[4]) url[ins[1]] = url[ins[1]].toLowerCase();
                    }

                    url.origin = url.protocol && url.host && url.protocol !== 'file:'
                        ? url.protocol + '//' + url.host
                        : 'null';

                    url.href = url.toString();

                    return url;
                }

                /**
                 * Transform the properties back in to a valid and full URL string.
                 *
                 * @param {Function} stringify Optional query stringify function.
                 * @returns {String} Compiled version of the URL.
                 * @public
                 */
                function toString(stringify) {
                    if (!stringify || 'function' !== typeof stringify) stringify = qs.stringify;

                    var query
                        , url = this
                        , protocol = url.protocol;

                    if (protocol && protocol.charAt(protocol.length - 1) !== ':') protocol += ':';

                    var result = protocol + (url.slashes ? '//' : '');

                    if (url.username) {
                        result += url.username;
                        if (url.password) result += ':' + url.password;
                        result += '@';
                    }

                    result += url.host + url.pathname;

                    query = 'object' === typeof url.query ? stringify(url.query) : url.query;
                    if (query) result += '?' !== query.charAt(0) ? '?' + query : query;

                    if (url.hash) result += url.hash;

                    return result;
                }

                Url.prototype = {set: set, toString: toString};

//
// Expose the URL parser and some additional properties that might be useful for
// others or testing.
//
                Url.extractProtocol = extractProtocol;
                Url.location = lolcation;
                Url.qs = qs;

                module.exports = Url;

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

        }, {"querystringify": 59, "requires-port": 60}]
    }, {}, [1])(1)
});


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