taro-sockjs-client
Version:
sockjs-client for Taro
3,594 lines • 116 kB
JavaScript
import Taro from '@tarojs/taro';
function randomBytes(length) {
let bytes = new Array(length);
for (let i = 0; i < length; i++) {
bytes[i] = Math.floor(Math.random() * 256);
}
return bytes;
}
var crypto = {
randomBytes
};
// bias.
let _randomStringChars = 'abcdefghijklmnopqrstuvwxyz012345';
var random = {
string: function (length) {
let max = _randomStringChars.length;
let bytes = crypto.randomBytes(length);
let ret = [];
for (let 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) {
let t = ('' + (max - 1)).length;
let p = new Array(t + 1).join('0');
return (p + this.number(max)).slice(-t);
}
};
let onUnload = {},
// detect google chrome packaged apps because they don't allow the 'unload' event
isChromePackagedApp = global.chrome && global.chrome.app && global.chrome.app.runtime;
var eventUtils = {
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;
}
let ref = random.string(8);
onUnload[ref] = listener;
return ref;
},
unloadDel: function (ref) {
if (ref in onUnload) {
delete onUnload[ref];
}
},
triggerUnloadCallbacks: function () {
for (let ref in onUnload) {
onUnload[ref]();
delete onUnload[ref];
}
}
};
var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
function createCommonjsModule(fn, basedir, module) {
return module = {
path: basedir,
exports: {},
require: function (path, base) {
return commonjsRequire(path, (base === undefined || base === null) ? module.path : base);
}
}, fn(module, module.exports), module.exports;
}
function commonjsRequire () {
throw new Error('Dynamic requires are not currently supported by @rollup/plugin-commonjs');
}
/**
* 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
*/
var requiresPort = 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;
};
var has = Object.prototype.hasOwnProperty
, undef;
/**
* Decode a URI encoded string.
*
* @param {String} input The URI encoded string.
* @returns {String|Null} The decoded string.
* @api private
*/
function decode(input) {
try {
return decodeURIComponent(input.replace(/\+/g, ' '));
} catch (e) {
return null;
}
}
/**
* Attempts to encode a given input.
*
* @param {String} input The string that needs to be encoded.
* @returns {String|Null} The encoded string.
* @api private
*/
function encode(input) {
try {
return encodeURIComponent(input);
} catch (e) {
return null;
}
}
/**
* 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.
//
// In the case if failed decoding, we want to omit the key/value pairs
// from the result.
//
if (key === null || value === null || 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 = []
, value
, key;
//
// Optionally prefix with a '?' if needed
//
if ('string' !== typeof prefix) prefix = '?';
for (key in obj) {
if (has.call(obj, key)) {
value = obj[key];
//
// Edge cases where we actually want to encode the value to an empty
// string instead of the stringified value.
//
if (!value && (value === null || value === undef || isNaN(value))) {
value = '';
}
key = encode(key);
value = encode(value);
//
// If we failed to encode the strings, we should bail out as we don't
// want to add invalid strings to the query.
//
if (key === null || value === null) continue;
pairs.push(key +'='+ value);
}
}
return pairs.length ? prefix + pairs.join('&') : '';
}
//
// Expose the module.
//
var stringify = querystringify;
var parse = querystring;
var querystringify_1 = {
stringify: stringify,
parse: parse
};
var slashes = /^[A-Za-z][A-Za-z0-9+-.]*:\/\//
, protocolre = /^([a-z][a-z0-9.+-]*:)?(\/\/)?([\S\s]*)/i
, whitespace = '[\\x09\\x0A\\x0B\\x0C\\x0D\\x20\\xA0\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000\\u2028\\u2029\\uFEFF]'
, left = new RegExp('^'+ whitespace +'+');
/**
* Trim a given string.
*
* @param {String} str String to trim.
* @public
*/
function trimLeft(str) {
return (str ? str : '').toString().replace(left, '');
}
/**
* 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 globalVar;
if (typeof window !== 'undefined') globalVar = window;
else if (typeof commonjsGlobal !== 'undefined') globalVar = commonjsGlobal;
else if (typeof self !== 'undefined') globalVar = self;
else globalVar = {};
var location = globalVar.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) {
address = trimLeft(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) {
if (relative === '') return 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) {
address = trimLeft(address);
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 = querystringify_1.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 (!requiresPort(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 || querystringify_1.parse)(value);
}
url[part] = value;
break;
case 'port':
url[part] = value;
if (!requiresPort(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 = querystringify_1.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.trimLeft = trimLeft;
Url.qs = querystringify_1;
var urlParse = Url;
const debug = function () {
return process.env.NODE_ENV !== 'production' ? console.debug.bind(console) : function () {};
}();
var urlUtils = {
getOrigin: function (url) {
if (!url) {
return null;
}
let p = new urlParse(url);
if (p.protocol === 'file:') {
return null;
}
let port = p.port;
if (!port) {
port = p.protocol === 'https:' ? '443' : '80';
}
return p.protocol + '//' + p.hostname + ':' + port;
},
isOriginEqual: function (a, b) {
let 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) {
let qs = url.split('?');
return qs[0] + path + (qs[1] ? '?' + qs[1] : '');
},
addQuery: function (url, q) {
return url + (url.indexOf('?') === -1 ? '?' + q : '&' + q);
},
isLoopbackAddr: function (addr) {
return /^127\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/i.test(addr) || /^\[::1\]$/.test(addr);
}
};
function inherits(ctor, superCtor) {
if (superCtor) {
ctor.super_ = superCtor;
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
});
}
}
/* 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] = [];
}
let 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) {
let arr = this._listeners[eventType];
if (!arr) {
return;
}
let 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 () {
let event = arguments[0];
let t = event.type; // equivalent of Array.prototype.slice.call(arguments, 0);
let 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.
let listeners = this._listeners[t];
for (let i = 0; i < listeners.length; i++) {
listeners[i].apply(this, args);
}
}
};
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) {
let 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 () {
let type = arguments[0];
let listeners = this._listeners[type];
if (!listeners) {
return;
} // equivalent of Array.prototype.slice.call(arguments, 1);
let l = arguments.length;
let args = new Array(l - 1);
for (let ai = 1; ai < l; ai++) {
args[ai - 1] = arguments[ai];
}
for (let 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;
function WebsocketDriver(url, protocols, options) {
return Taro.connectSocket({
url,
protocols,
...options
});
}
async function TaroWebSocketTransport(transUrl, ignore, options) {
if (!TaroWebSocketTransport.enabled()) {
throw new Error('Transport created when disabled');
}
EventEmitter.call(this);
debug('constructor', transUrl);
let self = this;
let 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 = await 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 = eventUtils.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();
});
return this;
}
inherits(TaroWebSocketTransport, EventEmitter);
TaroWebSocketTransport.prototype.send = function (data) {
let msg = '[' + data + ']';
debug('send', msg);
this.ws.send({
data: msg
});
};
TaroWebSocketTransport.prototype.close = function () {
debug('close');
let ws = this.ws;
this._cleanup();
if (ws) {
ws.close();
}
};
TaroWebSocketTransport.prototype._cleanup = function () {
debug('_cleanup');
let ws = this.ws;
if (ws) {
ws.onmessage = ws.onclose = ws.onerror = null;
}
eventUtils.unloadDel(this.unloadRef);
this.unloadRef = this.ws = null;
this.removeAllListeners();
};
TaroWebSocketTransport.enabled = function () {
debug('enabled');
return !!WebsocketDriver;
};
TaroWebSocketTransport.transportName = 'taroWebsocket'; // 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.
TaroWebSocketTransport.roundTrips = 2;
var transportList = [TaroWebSocketTransport];
/* eslint-disable */
/* jscs: disable */
// pulled specific shims from https://github.com/es-shims/es5-shim
let ArrayPrototype = Array.prototype;
let ObjectPrototype = Object.prototype;
let FunctionPrototype = Function.prototype;
let StringPrototype = String.prototype;
let array_slice = ArrayPrototype.slice;
let _toString = ObjectPrototype.toString;
let isFunction = function (val) {
return ObjectPrototype.toString.call(val) === '[object Function]';
};
let isArray = function isArray(obj) {
return _toString.call(obj) === '[object Array]';
};
let isString = function isString(obj) {
return _toString.call(obj) === '[object String]';
};
let 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.
let 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;
};
}
let defineProperties = function (object, map, forceAssign) {
for (let name in map) {
if (ObjectPrototype.hasOwnProperty.call(map, name)) {
defineProperty(object, name, map[name], forceAssign);
}
}
};
let 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) {
let 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.
let 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
let 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.
let 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.
let 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.
let 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.
let boundArgs = [];
for (let 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.
let 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
});
let boxedString = Object('a');
let splitString = boxedString[0] !== 'a' || !(0 in boxedString);
let properlyBoxesContext = function properlyBoxed(method) {
// Check node 0.6.21 bug where third parameter is not boxed
let properlyBoxesNonStrict = true;
let properlyBoxesStrict = true;
if (method) {
method.call('foo', function (_, __, context) {
if (typeof context !== 'object') {
properlyBoxesNonStrict = false;
}
});
method.call([1], function () {
properlyBoxesStrict = typeof this === 'string';
}, 'x');
}
return !!method && properlyBoxesNonStrict && properlyBoxesStrict;
};
defineProperties(ArrayPrototype, {
forEach: function forEach(fun
/*, thisp*/
) {
let 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
let hasFirefox2IndexOfBug = Array.prototype.indexOf && [0, 1].indexOf(1, 2) !== -1;
defineProperties(ArrayPrototype, {
indexOf: function indexOf(sought
/*, fromIndex */
) {
let self = splitString && isString(this) ? this.split('') : toObject(this),
length = self.length >>> 0;
if (!length) {
return -1;
}
let 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 ["", "", "."]
let 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 () {
let compliantExecNpcg = /()??/.exec('')[1] === void 0; // NPCG: nonparticipating capturing group
StringPrototype.split = function (separator, limit) {
let 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);
}
let 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 (let 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
let string_substr = StringPrototype.substr;
let 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);
var json3 = createCommonjsModule(function (module, exports) {
(function () {
// Detect the `define` function exposed by asynchronous module loaders. The
// strict `define` check is necessary for compatibility with `r.js`.
var isLoader = typeof undefined === "function" ;
// 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['object'] && 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['object'] && module && !module.nodeType && typeof commonjsGlobal == "object" && commonjsGlobal;
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 = objectProto.hasOwnProperty,
undefined$1;
// Internal: Contains `try...catch` logic used by other functions.
// This prevents other functions from being deoptimized.
function attempt(func, errorFunc) {
try {
func();
} catch (exception) {
if (errorFunc) {
errorFunc();
}
}
}
// Test the `Date#getUTC*` methods. Based on work by @Yaffle.
var isExtended = new Date(-3509827334573292);
attempt(function () {
// 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 &&
isExtended.getUTCHours() == 10 && isExtended.getUTCMinutes() == 37 && isExtended.getUTCSeconds() == 6 && isExtended.getUTCMilliseconds() == 708;
});
// 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] != null) {
// 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("date-serialization") && has("json-parse");
} else if (name == "date-serialization") {
// Indicates whether `Date`s can be serialized accurately by `JSON.stringify`.
isSupported = has("json-stringify") && isExtended;
if (isSupported) {
var stringify = exports.stringify;
attempt(function () {
isSupported =
// 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"';
});
}
} 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";
if (stringifySupported) {
// A test function object with a custom `toJSON` method.
(value = function () {
return 1;
}).toJSON = value;
attempt(function () {
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) === undefined$1 &&
// IE 8 serializes `undefined` as `"undefined"`. Safari <= 5.1.7 and
// FF 3.1b3 pass this test.
stringify(undefined$1) === undefined$1 &&
// Safari <= 5.1.7 and FF 3.1b3 throw `Error`s and `TypeError`s,
// respectively, if the value is omitted entirely.
stringify() === undefined$1 &&
// 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([undefined$1]) == "[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([undefined$1, 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]";
}, function () {
stringifySupported = false;
});
}
isSupported = stringifySupported;
}
// Test `JSON.parse`.
if (name == "json-parse") {
var parse = exports.parse, parseSupported;
if (typeof parse == "function") {
attempt(function () {
// 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);
parseSupported = value["a"].length == 5 && value["a"][0] === 1;
if (parseSupported) {
attempt(function () {
// Safari <= 5.1.2 and FF 3.1b1 allow unescaped tabs in strings.
parseSupported = !parse('"\t"');
});
if (parseSupported) {
attempt(function () {
// 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;
});
}
if (parseSupported) {
attempt(function () {
// 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;
});
}
}
}
}, function () {
parseSupported = false;
});
}
isSupported = parseSupported;
}
}
return has[name] = !!isSupported;
}
has["bug-string-char-index"] = has["date-serialization"] = has["json"] = has["json-stringify"] = has["json-parse"] = null;
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");
// Internal: Normalizes the `for...in` iteration algorithm across
// environments. Each enumerated key is yielded to a `callback` function.
var forOwn = function (object, callback) {
var size = 0, Properties, dontEnums, 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.
dontEnums = new Properties();
for (property in dontEnums) {
// Ignore all properties inherited from `Object.prototype`.
if (isProperty.call(dontEnums, property)) {
size++;
}
}
Properties = dontEnums = null;
// Normalize the iteration algorithm.
if (!size) {
// A list of non-enumerable properties inherited from `Object.prototype`.
dontEnums = ["valueOf", "toString", "toLocaleString", "propertyIsEnumerable", "isPrototypeOf", "hasOwnProperty", "constructor"];
// IE <= 8, Mozilla 1.0, and Netscape 6.2 ignore shadowed non-enumerable
// properties.
forOwn = 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 = dontEnums.length; property = dontEnums[--length];) {
if (hasProperty.call(object, property)) {
callback(property);
}
}
};
} else {
// No bugs detected; use the standard `for...in` algorithm.
forOwn = 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 forOwn(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") && !has("date-serialization")) {
// 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: Serializes a date object.
var serializeDate = function (value) {
var getData, year, month, date, time, hours, minutes, seconds, milliseconds;
// 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);
};
getData = function (value) {
// 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 {
getData = function (value) {
year = value.getUTCFullYear();
month = value.getUTCMonth();
date = value.getUTCDate();
hours = value.getUTCHours();
minutes = value.getUTCMinutes();
seconds = value.getUTCSeconds();
milliseconds = value.getUTCMilliseconds();
};
}
serializeDate = function (value) {
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.
getData(value);
// 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";
year = month = date = hours = minutes = seconds = milliseconds = null;
} else {
value = null;
}
return value;
};
return serializeDate(value);
};
// For environments with `JSON.stringify` but buggy date serialization,
// we override the native `Date#toJSON` implementation with a
// spec-compliant one.
if (has("json-stringify") && !has("date-serialization")) {
// Internal: the `Date#toJSON` implementation used to override the native one.
function dateToJSON (key) {
return serializeDate(this);
}
// Public: `JSON.stringify`. See ES 5.1 section 15.12.3.
var nativeStringify = exports.stringify;
exports.stringify = function (source, filter, width) {
var nativeToJSON = Date.prototype.toJSON;
Date.prototype.toJSON = dateToJSON;
var result = nativeStringify(source, filter, width);
Date.prototype.toJSON = nativeToJSON;
return result;
};
} else {
// 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 escapeChar = function (character) {
var charCode = character.charCodeAt(0), escaped = Escapes[charCode];
if (escaped) {
return escaped;
}
return unicodePrefix + toPaddedString(2, charCode.toString(16));
};
var reEscape = /[\x00-\x1f\x22\x5c]/g;
var quote = function (value) {
reEscape.lastIndex = 0;
return '"' +
(
reEscape.test(value)
? value.replace(reEscape, escapeChar)
: value
) +
'"';
};
// 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, type, className, results, element, index, length, prefix, result;
attempt(function () {
// Necessary for host object support.
value = object[property];
});
if (typeof value == "object" && value) {
if (value.getUTCFullYear && getClass.call(value) == dateClass && value.toJSON === Date.prototype.toJSON) {
value = serializeDate(value);
} else if (typeof value.toJSON == "function") {
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);
}
// Exit early if value is `undefined` or `null`.
if (value == undefined$1) {
return value === undefined$1 ? value : "null";
}
type = typeof value;
// Only call `getClass` if the value is an object.
if (type == "object") {
className = getClass.call(value);
}
switch (className || type) {
case "boolean":
case booleanClass:
// Booleans are represented literally.
return "" + value;
case "number":
case numberClass:
// JSON numbers must be finite. `Infinity` and `NaN` are serialized as
// `"null"`.
return value > -1 / 0 && value < 1 / 0 ? "" + value : "null";
case "string":
case 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 === undefined$1 ? "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.
forOwn(properties || value, function (property) {
var element = serialize(property, value, callback, properties, whitespace, indentation, stack);
if (element !== undefined$1) {
// 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) {
className = getClass.call(filter);
if (className == 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);
if (className == "[object String]" || className == "[object Number]") {
properties[value] = 1;
}
}
}
}
if (width) {
className = getClass.call(width);
if (className == numberClass) {
// Convert the `width` to an integer and create a string containing
// `width` number of space characters.
if ((width -= width % 1) > 0) {
if (width > 10) {
width = 10;
}
for (whitespace = ""; 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; position++) {
charCode = source.charCodeAt(position);
if (charCode < 48 || charCode > 57) {
break;
}
}
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; position++) {
charCode = source.charCodeAt(position);
if (charCode < 48 || charCode > 57) {
break;
}
}
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.
var temp = source.slice(Index, Index + 4);
if (temp == "true") {
Index += 4;
return true;
} else if (temp == "fals" && source.charCodeAt(Index + 4 ) == 101) {
Index += 5;
return false;
} else if (temp == "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 (;;) {
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();
}
} else {
hasMembers = true;
}
// 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 (;;) {
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();
}
} else {
hasMembers = true;
}
// 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 === undefined$1) {
delete source[property];
} else {
source[property] = element;
}
};
// Internal: Recursively traverses a parsed JSON object, invoking the
// `callback` function for each value. This is an implementation of the
// `Walk(holder, name)` operation defined in ES 5.1 section 15.12.2.
var walk = function (source, property, callback) {
var value = source[property], length;
if (typeof value == "object" && value) {
// `forOwn` can't be used to traverse an array in Opera <= 8.54
// because its `Object#hasOwnProperty` implementation returns `false`
// for array indices (e.g., `![1, 2, 3].hasOwnProperty("0")`).
if (getClass.call(value) == arrayClass) {
for (length = value.length; length--;) {
update(getClass, forOwn, value, length, callback);
}
} else {
forOwn(value, function (property) {
update(value, property, callback);
});
}
}
return callback.call(source, property, value);
};
// Public: `JSON.parse`. See ES 5.1 section 15.12.2.
exports.parse = function (source, callback) {
var result, value;
Index = 0;
Source = "" + source;
result = get(lex());
// If a JSON string contains multiple tokens, it is invalid.
if (lex() != "$") {
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
};
}
}).call(commonjsGlobal);
});
// something else on the wire.
// eslint-disable-next-line no-control-regex, no-misleading-character-class
let 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.
let unrollLookup = function (escapable) {
let i;
let unrolled = {};
let 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
var escape = {
quote: function (string) {
let 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];
});
}
};
function transport (availableTransports) {
return {
filterToEnabled: function (transportsWhitelist, info) {
let 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;
}
};
}
var objectUtils = {
isObject: function (obj) {
let type = typeof obj;
return type === 'function' || type === 'object' && !!obj;
},
extend: function (obj) {
if (!this.isObject(obj)) {
return obj;
}
let source, prop;
for (let 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;
}
};
var browser = {
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;
}
}
};
let logObject = {};
['log', 'debug', 'warn'].forEach(function (level) {
let 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;
});
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;
var loc = global.location || {
origin: 'http://localhost:80',
protocol: 'http:',
host: 'localhost',
port: 80,
href: 'http://localhost/',
hash: ''
};
function CloseEvent() {
Event.call(this);
this.initEvent('close', false, false);
this.wasClean = false;
this.code = 0;
this.reason = '';
}
inherits(CloseEvent, Event);
function TransportMessageEvent(data) {
Event.call(this);
this.initEvent('message', false, false);
this.data = data;
}
inherits(TransportMessageEvent, Event);
// 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) {
var self = this;
EventEmitter.call(this);
setTimeout(function () {
self._start(method, url, payload);
}, 0);
}
inherits(XDRObject, EventEmitter);
XDRObject.prototype._start = function (method, url, payload) {
var self = this;
var xdr = new global.XDomainRequest(); // IE caches even POSTs
url = urlUtils.addQuery(url, 't=' + +new Date());
xdr.onerror = function () {
self._error();
};
xdr.ontimeout = function () {
self._error();
};
xdr.onprogress = function () {
self.emit('chunk', 200, xdr.responseText);
};
xdr.onload = function () {
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) {
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 () {
this._cleanup(true);
}; // IE 8/9 if the request target uses the same scheme - #79
XDRObject.enabled = !!(global.XDomainRequest && browser.hasDomain());
const http = require('http');
const https = require('https');
function XhrDriver(method, url, payload, opts) {
debug(method, url, payload);
let self = this;
EventEmitter.call(this);
let parsedUrl = new urlParse(url);
let options = {
method: method,
hostname: parsedUrl.hostname.replace(/\[|\]/g, ''),
port: parsedUrl.port,
path: parsedUrl.pathname + (parsedUrl.query || ''),
headers: opts && opts.headers,
agent: false
};
let protocol = parsedUrl.protocol === 'https:' ? https : http;
this.req = protocol.request(options, function (res) {
res.setEncoding('utf8');
let responseText = '';
res.on('data', function (chunk) {
debug('data', chunk);
responseText += chunk;
self.emit('chunk', 200, responseText);
});
res.once('end', function () {
debug('end');
self.emit('finish', res.statusCode, responseText);
self.req = null;
});
});
this.req.on('error', function (e) {
debug('error', e);
self.emit('finish', 0, e.message);
});
if (payload) {
this.req.write(payload);
}
this.req.end();
}
inherits(XhrDriver, EventEmitter);
XhrDriver.prototype.close = function () {
debug('close');
this.removeAllListeners();
if (this.req) {
this.req.abort();
this.req = null;
}
};
XhrDriver.enabled = true;
XhrDriver.supportsCORS = true;
function XHRCorsObject(method, url, payload, opts) {
XhrDriver.call(this, method, url, payload, opts);
}
inherits(XHRCorsObject, XhrDriver);
XHRCorsObject.enabled = XhrDriver.enabled && XhrDriver.supportsCORS;
function XHRLocalObject(method, url, payload
/*, opts */
) {
XhrDriver.call(this, method, url, payload, {
noCredentials: true
});
}
inherits(XHRLocalObject, XhrDriver);
XHRLocalObject.enabled = XhrDriver.enabled;
function XHRFake()
/* method, url, payload, opts */
{
let 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;
function InfoAjax(url, AjaxObject) {
EventEmitter.call(this);
let self = this;
let t0 = +new Date();
this.xo = new AjaxObject('GET', url);
this.xo.once('finish', function (status, text) {
let 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();
};
function InfoReceiver(baseUrl, urlInfo) {
debug(baseUrl);
let 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, XHRLocalObject);
}
if (XHRCorsObject.enabled) {
return new InfoAjax(url, XHRCorsObject);
}
if (XDRObject.enabled && urlInfo.sameScheme) {
return new InfoAjax(url, XDRObject);
}
return new InfoAjax(url, XHRFake);
};
InfoReceiver.prototype.doXhr = function (baseUrl, urlInfo) {
let 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;
var version = "1.0.3";
var iframeUtils = {
WPrefix: '_jp',
currentWindowId: null,
iframeEnabled: false,
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) {
let iframe = global.document.createElement('iframe');
let tref, unloadRef;
let unattach = function () {
debug('unattach');
clearTimeout(tref); // Explorer had problems with that.
try {
iframe.onload = null;
} catch (x) {// intentionally empty
}
iframe.onerror = null;
};
let 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);
}
};
let onerror = function (err) {
debug('onerror', err);
if (iframe) {
cleanup();
errorCallback(err);
}
};
let 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) {
let axo = ['Active'].concat('Object').join('X');
let doc = new global[axo]('htmlfile');
let tref, unloadRef;
let iframe;
let unattach = function () {
clearTimeout(tref);
iframe.onerror = null;
};
let cleanup = function () {
if (doc) {
unattach();
eventUtils.unloadDel(unloadRef);
iframe.parentNode.removeChild(iframe);
iframe = doc = null;
CollectGarbage();
}
};
let onerror = function (r) {
debug('onerror', r);
if (doc) {
cleanup();
errorCallback(r);
}
};
let 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];
let 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
};
}
};
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();
};
function InfoReceiverIframe(transUrl) {
let 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();
};
function iframeBootstrap (SockJS, availableTransports) {
let 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[InfoReceiverIframe.transportName] = InfoReceiverIframe;
let parentOrigin;
/* eslint-disable camelcase */
SockJS.bootstrap_iframe = function () {
/* eslint-enable camelcase */
let facade;
iframeUtils.currentWindowId = loc.hash.slice(1);
let onMessage = function (e) {
if (e.source !== parent) {
return;
}
if (typeof parentOrigin === 'undefined') {
parentOrigin = e.origin;
}
if (e.origin !== parentOrigin) {
return;
}
let 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':
let p;
try {
p = json3.parse(iframeMessage.data);
} catch (ignored) {
debug('bad json', iframeMessage.data);
break;
}
let version = p[0];
let transport = p[1];
let transUrl = p[2];
let 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');
};
}
let 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 from , but only 0 present");
}
EventTarget.call(this);
this.readyState = SockJS.CONNECTING;
this.extensions = '';
this.protocol = ''; // non-standard extension
options = options || {};
if (options.protocols_whitelist) {
logObject.warn("'protocols_whitelist' is DEPRECATED. Use 'transports' instead.");
}
this._transportsWhitelist = options.transports;
this._transportOptions = options.transportOptions || {};
this._timeout = options.timeout || 0;
let 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
let parsedUrl = new urlParse(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.");
}
let secure = parsedUrl.protocol === 'https:'; // Step 2 - don't allow secure origin with an insecure protocol
if (loc.protocol === 'https:' && !secure) {
// exception is 127.0.0.0/8 and ::1 urls
if (!urlUtils.isLoopbackAddr(parsedUrl.hostname)) {
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
let 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
let 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
let 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 = 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
let enabledTransports = transports.filterToEnabled(this._transportsWhitelist, info);
this._transports = enabledTransports.main;
debug(this._transports.length + ' enabled transports');
this._connect();
};
SockJS.prototype._connect = async function () {
for (let 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
let timeoutMs = Math.max(this._timeout, this._rto * Transport.roundTrips || 5000); // this._transportTimeoutId = setTimeout(
// this._transportTimeout.bind(this),
// timeoutMs,
// )
// debug('using timeout', timeoutMs)
let transportUrl = urlUtils.addPath(this._transUrl, '/' + this._server + '/' + this._generateSessionId());
let options = this._transportOptions[Transport.transportName];
debug('transport url', transportUrl);
let transportObj = new Transport(transportUrl, this._transUrl, options);
if (transportObj.then) {
transportObj.then(transportObj => {
transportObj.on('message', this._transportMessage.bind(this));
transportObj.once('close', this._transportClose.bind(this));
this._transport = transportObj;
});
} else {
transportObj.on('message', this._transportMessage.bind(this));
transportObj.once('close', this._transportClose.bind(this));
this._transport = transportObj;
}
transportObj.transportName = Transport.transportName;
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);
let 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);
let 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'));
}
let 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
};
function wrapSockJs(availableTransports) {
transports = transport(availableTransports);
iframeBootstrap(SockJS, availableTransports);
return SockJS;
}
var index = wrapSockJs(transportList);
export default index;