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# This is the list of sockjs-client authors for copyright purposes.
#
# This does not necessarily list everyone who has contributed code, since in
# some cases, their employer may be the copyright holder. To see the full list
# of contributors, see the revision history in source control.
Bryce Kahle
Marek Majkowski
VMWare
LearnBoost
Julian Aubourg

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# Contributor Covenant Code of Conduct
## Our Pledge
In the interest of fostering an open and welcoming environment, we as
contributors and maintainers pledge to making participation in our project and
our community a harassment-free experience for everyone, regardless of age, body
size, disability, ethnicity, sex characteristics, gender identity and expression,
level of experience, education, socio-economic status, nationality, personal
appearance, race, religion, or sexual identity and orientation.
## Our Standards
Examples of behavior that contributes to creating a positive environment
include:
* Using welcoming and inclusive language
* Being respectful of differing viewpoints and experiences
* Gracefully accepting constructive criticism
* Focusing on what is best for the community
* Showing empathy towards other community members
Examples of unacceptable behavior by participants include:
* The use of sexualized language or imagery and unwelcome sexual attention or
advances
* Trolling, insulting/derogatory comments, and personal or political attacks
* Public or private harassment
* Publishing others' private information, such as a physical or electronic
address, without explicit permission
* Other conduct which could reasonably be considered inappropriate in a
professional setting
## Our Responsibilities
Project maintainers are responsible for clarifying the standards of acceptable
behavior and are expected to take appropriate and fair corrective action in
response to any instances of unacceptable behavior.
Project maintainers have the right and responsibility to remove, edit, or
reject comments, commits, code, wiki edits, issues, and other contributions
that are not aligned to this Code of Conduct, or to ban temporarily or
permanently any contributor for other behaviors that they deem inappropriate,
threatening, offensive, or harmful.
## Scope
This Code of Conduct applies both within project spaces and in public spaces
when an individual is representing the project or its community. Examples of
representing a project or community include using an official project e-mail
address, posting via an official social media account, or acting as an appointed
representative at an online or offline event. Representation of a project may be
further defined and clarified by project maintainers.
## Enforcement
Instances of abusive, harassing, or otherwise unacceptable behavior may be
reported by contacting the project team at sockjs@brycekahle.com. All
complaints will be reviewed and investigated and will result in a response that
is deemed necessary and appropriate to the circumstances. The project team is
obligated to maintain confidentiality with regard to the reporter of an incident.
Further details of specific enforcement policies may be posted separately.
Project maintainers who do not follow or enforce the Code of Conduct in good
faith may face temporary or permanent repercussions as determined by other
members of the project's leadership.
## Attribution
This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
[homepage]: https://www.contributor-covenant.org
For answers to common questions about this code of conduct, see
https://www.contributor-covenant.org/faq

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1.6.1
==
Fixes
* Update `eventsource` to `2.0.2` due to CVE-2022-1650. Fixes #590
* Update `minimist` to `1.2.6`. Fixes #585
1.6.0
==
Fixes
* Remove `agent: false` to allow usage of `globalAgent`. Fixes #421
dependencies
* Update `url-parse` due to CVE-2022-0686, CVE-2022-0639, and CVE-2022-0512. Fixes #576
* Remove `json3` dependency. Fixes #476
* Update `eventsource` to `1.1.0`
* Update `faye-websocket` to `0.11.4`
* Update `debug` to `3.2.7`
devDependencies
* Update `follow-redirects` (devDep) due to CVE-2022-0536 and CVE-2022-0155
* Update `karma` (devDep) due to CVE-2022-0437
* Update `cached-path-relative` (devDep) due to CVE-2021-23518
* Update `fsevents` (devDep) to fix:
* `ini` CVE-2020-7788
* `minimist` CVE-2020-7598
* `tar` CVE-2021-37713, CVE-2021-37701, CVE-2021-32804, CVE-2021-32803
* Update `copy-props` (devDep) due to CVE-2020-28503
* Update `eslint`, `mocha`, `gulp-replace`, `karma-browserify`, `gulp-sourcemaps`, and `browserify`
Other Changes
* Remove bower
* Remove Travis CI
* Require Node.js 12
1.5.2
==
* Update `url-parse` due to CVE-2021-3664.
1.5.1
==
* Update `url-parse` due to CVE-2021-27515.
1.5.0
==
* Update `url-parse`, `kind-of`, `minimist`, `websocket-extensions` due to security vulnerabilies.
* Update dev dependencies.
* Allow loopback address hostnames on a secure page. Fixes #486
* Enable eventsource transport for node.js clients.
1.4.0
==
* Add `timeout` option to set a minimum transport timeout. Fixes #403
* Update dev deps to fix security warnings from `npm audit`
* Guard against null `this._transport` in `debug` statement. Fixes #448
1.3.0
==
* Revert `debug` to `^3` because v4 starts using ES6. Fixes #457
1.2.0
==
* Update all outdated dependencies
* Switch to karma and browserstack for running automated browser tests
1.1.5
==
* Wrap the the contentWindow access in a try/catch block when in setTimeout #363
* Revised example in README #356
* Fix connection close when Transport timeout #358
* Fixed crash with react-native@0.45.1 on Android #386
* Update jsDelivr link #404, #405
* Remove Sauce Labs unsupported browsers
* Add link to rust server implementation #411
* location.protocol should include final `:` #396
1.1.4
==
* Upgrade `debug` and fix object key literal mangling, fixes regression in Opera 11.10 #359
* Trim descriptions in package.json and bower.json - #372
1.1.3
==
* Bad publish to NPM (removed)
1.1.2
==
* Ensure both sender and receiver are cleaned upon close - #342
* Remove event listeners before calling `close` - #344
* Update documentation links - #351, #339, #316
* Explicitly export `undefined` when `WebSocket` does not exist. Fixes Webpack. #321
* Include `dist` folder on npm - #265
* Simplify build setup
* Update to Node.js 6.9
* Add sourcemap for minified version
* Remove unused String.trim shim
1.1.1
==
* Do not pass `protocols` or `options` arguments to browser WebSocket constructor - #309
1.1.0
==
* Fix IE7/8 usage of `console.log` which does not have `apply` - #279
* Remove `dbg` global variable - #282
* Bump `faye-websocket` version to `0.11.0` - #267
* Optimize `arguments` usage - #263
* Add sourcemap file to dist folder - #237
* Add way to transparently pass transport-specific options - #272
1.0.3
==
* Use `https` module for xhr requests in node when url uses https - #254
1.0.2
==
* Fix iframe info receiver url
* Move iframe.contentWindow check inside setTimeout - #246
1.0.1
==
* Use proper base url for iframe-based info receiver - #249
* Don't register unload event in chrome packaged app - #223
* Allow custom session ids - #250
* Remove version property from bower.json - #247
* Update example CDN url - #244
1.0.0
===
* Simplify url handling by delegating to `url-parse` - #242
* Upgrade to `url-parse` 1.0.1 to fix colon issue if auth has no password
1.0.0-beta.13
===
* Transport timeout on connection should fallback - #238
1.0.0-beta.12
====
* Upgrade `url-parse` to 1.0.0 to fix #218 again
1.0.0-beta.10
====
* Upgrade `url-parse` to 0.2.3 to fix #222
1.0.0-beta.9
====
* Upgrade `url-parse` to 0.2.1 to fix 'too much recursion' errors
1.0.0-beta.8
====
* Upgrade `url-parse` to 0.2.0 to fix inheritance issues
1.0.0-beta.7
====
* Upgrade `url-parse` to 0.1.5 to fix #218
* Don't strip basic auth from url - #219
1.0.0-beta.6
====
* Upgrade `url-parse` to 0.1.3 to avoid CSP issues
1.0.0-beta.5
=====
* Upgrade `url-parse` to 0.1.1 to fix #214
1.0.0-beta.4
=====
* Upgrade `url-parse` to 0.1.0 and `sockjs` to 0.3.11
* Update .npmignore
1.0.0-beta.3
=====
* Move `debug` from devDependencies to dependencies
1.0.0-beta.2
=====
* Relax requirements when using same origin XHR - #80
* Upgrade to JSON3 from JSON2 - #123
* Package library with browserify supporting the UMD pattern - #184
* Move tests to JavaScript
* Add Gulp.js build script
* Fix getOrigin for file:/// urls and standard ports - #173
* Add onerror event handlers to Websockets - #169
* Increase RTO lower bound to prevent spurious timeouts on IE8/9 - #161
* Use window.crypto for random values when available - #128
* Fix handling of listeners added and removed mid-dispatch - #127
* Fix XHR Streaming for IE8 - #83
* Remove explicit AMD name - #107
* Check for an empty response from /info request - #143
* Add Content-Type to XHR requests to fix issue over HTTPS on Galaxy S4 - #164
* Fix iframe fallback when message is sent from a popup in IE7/8 - #166
* Add support for query strings on the url - #72
* Now works inside of Web Workers - #181
* Support EventSource / Server Sent Events outside of iframes - #201
* Rename protocols to transports - #65
* Allow transports which need the body to trigger on 'interactive' readyState - #175
* try/catch access to document.domain - #187
* Use `window.location` instead of `document.location` - #195
* Allow usage from node.js with same API
0.3.4
=====
* Mentioned njoyce's fork of sockjs-gevent.
* #90 - Don't catch onbeforeunload event - it breaks javascript://
links in IE.
* IE mangles 204 response code for 1223 on ajax, see:
http://bugs.jquery.com/ticket/1450
* Make `new` optional for SockJS constructor (via substack).
* It is impossible to cancel JSONP polling request - compensate for that.
* Refactored EventEmitter prototype (used only internally)
* #66 - Failure to post data to /xhr_send should kill the session
0.3.2
=====
* #77 - Getting /info on modern browsers when html is served from
file:// urls was broken.
0.3.1
=====
* #61 - Meteor guys found that we unintentionally catch "onopen" errors.
* #63 - Meteorjs guys found that xhr-streaming on Safari sometimes
left busy cursor running.
* Increased allowed time for websocket transport (from 1 rtt to 2),
this should make ws transport more reliable over SSL, at the cost
of slightly longer connection time for users with blocked ws.
* #57 - previous fix didn't really work, sockjs-client still left
a mess in browsers history when using iframe transports. This
is fixed now.
* #60 - Opera 12 (next) claims to do AJAX2 / CORS, but can't
do xhr-streaming.
* #58 - onunload test sometimes failed on Safari on windows
* Updated readme WRT websocket protocols
* Updated readme WRT deployments on heroku
* Add minimalistic license block to every source file.
0.3.0
=====
* Temporarily disabled iframe tests - they are failing unpredictably.
* #57 - pointing an iframe to "about:blank" during cleanup caused
Opera to messup history.
* #55 - Improved iframe abstraction (reduced a possible mem leak)
* Refactored AJAX abstractions, for better CORS handing - again.
* Add additional parent origin security check to an iframe.
* Urls with hashes or query strings can't be passed to SockJS.
* #18 - Mention workaround for Firefox ESC key issue
* #53 - AMD compliance
* sockjs/sockjs-protocol#28 - always use square brackets for
websocket frames
* #51 - initial support for IE10 - try XHR before XDR
* #28 - handle onunload / onbeforeunload in a more robust fashion
* #49 - support SockJS-client being used from files served from
file:// urls.
0.2.1
=====
* "smoke-latency.html" test was unnecesairly sending too much data.
* Bumped core dependencies (coffee-script and uglify-js)
* Minor updates to the README, few cosmetic changes in the code.
0.2.0
=====
* The API had changed - use `protocols_whitelist` option instead of
passing an array of protocols as a second argument to SockJS constructor.
* Dropped 'chunking-test' functionality and replace it with 'info'.
* Rewritten protocol-choosing alogirthm, see "utils.detectProtocols" method.
* Use dynamic protocol timeouts based on RTT, not hardcoded 5 seconds
* #34 - Don't ever reuse `session_id`, especially when trying
fallback protocols.
* The test server got moved from SockJS-client to SockJS-node.
* Don't test unicode surrogates - it can't work in some environments.
* XHR/XDR helpers were rewritten, ajax transports were simplified.
* Added a domain check in the iframe to improve security.
* SockJS will now trigger 1002 error if there is a problem during handshake
instead of 2000 error.
* Smoke-throughput test is renamed to smoke-latency.
0.1.2
=====
* #29 - Allow all unicode characters to be send over SockJS.
* #15 - SockJS should now work fine even if the connection is started
in HEAD, before BODY is loaded.
* #28 - In rare circumstances WebSocket connection can be left intact
after the page is unloaded in FireFox.
* Updated scripts to work with Node 0.6.
* Initial work to do better QUnit testing.
* Updated the minifying script (always escape unicode chars, remove
trailing comment).
* Use string instead of array of chars (utils.js:random_number_string).
0.1.1
=====
* #21 Get JsonP transport working on IE9 (Vladimir Dronnikov).
* #26 Emit heartbeat event.
* #27 Include license inline.
0.1.0
=====
* SockJS-client can only send UTF-8 encodable strings. Previously we
took advantage of rich data structures and automatically
json-encoded them, but this got removed. Now, all data passed to
`send` will be converted to string. This is also how native
* `status` property on `EventClose` is renamed to `code`
as per Websocket API
WebSockets behave.
* The test server was updated to new `sockjs-node` API
* Fixed problem with Jsonp-polling transport on IE9
* Repository was moved - updated links.
0.0.4
=====
* All transports were refactored, some transports were introduced:
htmlfile and separate xhr-streaming.
* Added logic to detect support for http chunking, and thus a
possibility to rule out streaming transports before running them.
* Added 'cookie' option, useful for cookie-based load balancing
(currently, it make a difference only for IE).
* Added hack to prevent EventSource from crashing Safari and Chrome.
* Loads and loads of other small and medium changes.
0.0.2
=====
* Initial support for JSESSIONID based load balancing. Currently
doesn't play nicely with IE XDomainRequest transport.
0.0.1
=====
* Initial release.

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The MIT License (MIT)
Copyright (c) 2011-2018 The sockjs-client Authors.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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# SockJS-client
[![npm version](https://img.shields.io/npm/v/sockjs-client.svg?style=flat-square)](https://www.npmjs.com/package/sockjs-client)[![Dependencies](https://img.shields.io/librariesio/release/npm/sockjs-client.svg?style=flat-square)](https://libraries.io/npm/sockjs-client)[![Chat](https://img.shields.io/badge/Chat-gitter.im-blue.svg?style=flat-square)](https://gitter.im/sockjs/sockjs-client)[![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-v2.0%20adopted-ff69b4.svg?style=flat-square)](CODE_OF_CONDUCT.md)
[![BrowserStack Status](https://automate.browserstack.com/badge.svg?badge_key=N3V0cStKM3RtUy9Bb2l2cHFhMVdobTZnUitBZ1lLcUkwYnl2TWgyMHppQT0tLWxncU5UeTdLb0Rqc1VQQTI5SklRelE9PQ==--596ccf9d3cd2f462f1043ee6803a9405e00446ac)](https://automate.browserstack.com/public-build/N3V0cStKM3RtUy9Bb2l2cHFhMVdobTZnUitBZ1lLcUkwYnl2TWgyMHppQT0tLWxncU5UeTdLb0Rqc1VQQTI5SklRelE9PQ==--596ccf9d3cd2f462f1043ee6803a9405e00446ac)
<a href="https://www.netlify.com">
<img src="https://www.netlify.com/img/global/badges/netlify-color-accent.svg"/>
</a>
# SockJS for enterprise
Available as part of the Tidelift Subscription.
The maintainers of SockJS and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. [Learn more.](https://tidelift.com/subscription/pkg/npm-sockjs-client?utm_source=npm-sockjs-client&utm_medium=referral&utm_campaign=enterprise&utm_term=repo)
# Summary
SockJS is a browser JavaScript library that provides a WebSocket-like
object. SockJS gives you a coherent, cross-browser, Javascript API
which creates a low latency, full duplex, cross-domain communication
channel between the browser and the web server.
Under the hood SockJS tries to use native WebSockets first. If that
fails it can use a variety of browser-specific transport protocols and
presents them through WebSocket-like abstractions.
SockJS is intended to work for all modern browsers and in environments
which don't support the WebSocket protocol -- for example, behind restrictive
corporate proxies.
SockJS-client does require a server counterpart:
* [SockJS-node](https://github.com/sockjs/sockjs-node) is a SockJS
server for Node.js.
Philosophy:
* The API should follow
[HTML5 Websockets API](https://www.w3.org/TR/websockets/) as
closely as possible.
* All the transports must support cross domain connections out of the
box. It's possible and recommended to host a SockJS server on a
different server than your main web site.
* There is support for at least one streaming protocol for every
major browser.
* Streaming transports should work cross-domain and
should support cookies (for cookie-based sticky sessions).
* Polling transports are used as a fallback for old browsers and
hosts behind restrictive proxies.
* Connection establishment should be fast and lightweight.
* No Flash inside (no need to open port 843 - which doesn't work
through proxies, no need to host 'crossdomain.xml', no need
[to wait for 3 seconds](https://github.com/gimite/web-socket-js/issues/49)
in order to detect problems)
Subscribe to
[SockJS mailing list](https://groups.google.com/forum/#!forum/sockjs) for
discussions and support.
# SockJS family
* [SockJS-client](https://github.com/sockjs/sockjs-client) JavaScript client library
* [SockJS-node](https://github.com/sockjs/sockjs-node) Node.js server
* [SockJS-erlang](https://github.com/sockjs/sockjs-erlang) Erlang server
* [SockJS-cyclone](https://github.com/flaviogrossi/sockjs-cyclone) Python/Cyclone/Twisted server
* [SockJS-tornado](https://github.com/MrJoes/sockjs-tornado) Python/Tornado server
* [SockJS-twisted](https://github.com/DesertBus/sockjs-twisted/) Python/Twisted server
* [SockJS-aiohttp](https://github.com/aio-libs/sockjs/) Python/Aiohttp server
* [Spring Framework](https://projects.spring.io/spring-framework) Java [client](https://docs.spring.io/spring-framework/docs/current/spring-framework-reference/web.html#websocket-fallback-sockjs-client) & server
* [vert.x](https://github.com/vert-x/vert.x) Java/vert.x server
* [Xitrum](https://xitrum-framework.github.io/) Scala server
* [Atmosphere Framework](https://github.com/Atmosphere/atmosphere) JavaEE Server, Play Framework, Netty, Vert.x
* [Actix SockJS](https://github.com/fafhrd91/actix-sockjs) Rust Server, Actix Framework
Work in progress:
* [SockJS-ruby](https://github.com/nyarly/sockjs-ruby)
* [SockJS-netty](https://github.com/cgbystrom/sockjs-netty)
* [SockJS-gevent](https://github.com/ksava/sockjs-gevent) ([SockJS-gevent fork](https://github.com/njoyce/sockjs-gevent))
* [pyramid-SockJS](https://github.com/fafhrd91/pyramid_sockjs)
* [wildcloud-websockets](https://github.com/wildcloud/wildcloud-websockets)
* [wai-SockJS](https://github.com/Palmik/wai-sockjs)
* [SockJS-perl](https://github.com/vti/sockjs-perl)
* [SockJS-go](https://github.com/igm/sockjs-go/)
* [syp.biz.SockJS.NET](https://github.com/sypbiz/SockJS.NET) - .NET port of the SockJS client
# Getting Started
SockJS mimics the [WebSockets API](https://www.w3.org/TR/websockets/),
but instead of `WebSocket` there is a `SockJS` Javascript object.
First, you need to load the SockJS JavaScript library. For example, you can
put that in your HTML head:
```html
<script src="https://cdn.jsdelivr.net/npm/sockjs-client@1/dist/sockjs.min.js"></script>
```
After the script is loaded you can establish a connection with the
SockJS server. Here's a simple example:
```javascript
var sock = new SockJS('https://mydomain.com/my_prefix');
sock.onopen = function() {
console.log('open');
sock.send('test');
};
sock.onmessage = function(e) {
console.log('message', e.data);
sock.close();
};
sock.onclose = function() {
console.log('close');
};
```
# SockJS-client API
## SockJS class
Similar to the 'WebSocket' API, the 'SockJS' constructor takes one, or more arguments:
```javascript
var sockjs = new SockJS(url, _reserved, options);
```
`url` may contain a query string, if one is desired.
Where `options` is a hash which can contain:
* **server (string)**
String to append to url for actual data connection. Defaults to a random 4 digit number.
* **transports (string OR array of strings)**
Sometimes it is useful to disable some fallback transports. This
option allows you to supply a list transports that may be used by
SockJS. By default all available transports will be used.
* **sessionId (number OR function)**
Both client and server use session identifiers to distinguish connections.
If you specify this option as a number, SockJS will use its random string
generator function to generate session ids that are N-character long
(where N corresponds to the number specified by **sessionId**).
When you specify this option as a function, the function must return a
randomly generated string. Every time SockJS needs to generate a session
id it will call this function and use the returned string directly.
If you don't specify this option, the default is to use the default random
string generator to generate 8-character long session ids.
* **timeout (number)**
Specify a minimum timeout in milliseconds to use for the transport connections.
By default this is dynamically calculated based on the measured RTT and
the number of expected round trips. This setting will establish a minimum,
but if the calculated timeout is higher, that will be used.
Although the 'SockJS' object tries to emulate the 'WebSocket'
behaviour, it's impossible to support all of its features. An
important SockJS limitation is the fact that you're not allowed to
open more than one SockJS connection to a single domain at a time.
This limitation is caused by an in-browser limit of outgoing
connections - usually [browsers don't allow opening more than two
outgoing connections to a single domain](https://stackoverflow.com/questions/985431/max-parallel-http-connections-in-a-browser). A single SockJS session
requires those two connections - one for downloading data, the other for
sending messages. Opening a second SockJS session at the same time
would most likely block, and can result in both sessions timing out.
Opening more than one SockJS connection at a time is generally a
bad practice. If you absolutely must do it, you can use
multiple subdomains, using a different subdomain for every
SockJS connection.
# Supported transports, by browser (html served from http:// or https://)
_Browser_ | _Websockets_ | _Streaming_ | _Polling_
----------------|------------------|-------------|-------------------
IE 6, 7 | no | no | jsonp-polling
IE 8, 9 (cookies=no) | no | xdr-streaming &dagger; | xdr-polling &dagger;
IE 8, 9 (cookies=yes)| no | iframe-htmlfile | iframe-xhr-polling
IE 10 | rfc6455 | xhr-streaming | xhr-polling
Chrome 6-13 | hixie-76 | xhr-streaming | xhr-polling
Chrome 14+ | hybi-10 / rfc6455| xhr-streaming | xhr-polling
Firefox <10 | no &Dagger; | xhr-streaming | xhr-polling
Firefox 10+ | hybi-10 / rfc6455| xhr-streaming | xhr-polling
Safari 5.x | hixie-76 | xhr-streaming | xhr-polling
Safari 6+ | rfc6455 | xhr-streaming | xhr-polling
Opera 10.70+ | no &Dagger; | iframe-eventsource | iframe-xhr-polling
Opera 12.10+ | rfc6455 | xhr-streaming | xhr-polling
Konqueror | no | no | jsonp-polling
* **&dagger;**: IE 8+ supports [XDomainRequest][^9], which is
essentially a modified AJAX/XHR that can do requests across
domains. But unfortunately it doesn't send any cookies, which
makes it inappropriate for deployments when the load balancer uses
JSESSIONID cookie to do sticky sessions.
* **&Dagger;**: Firefox 4.0 and Opera 11.00 and shipped with disabled
Websockets "hixie-76". They can still be enabled by manually
changing a browser setting.
# Supported transports, by browser (html served from file://)
Sometimes you may want to serve your html from "file://" address - for
development or if you're using PhoneGap or similar technologies. But
due to the Cross Origin Policy files served from "file://" have no
Origin, and that means some of SockJS transports won't work. For this
reason the SockJS transport table is different than usually, major
differences are:
_Browser_ | _Websockets_ | _Streaming_ | _Polling_
----------------|---------------|--------------------|-------------------
IE 8, 9 | same as above | iframe-htmlfile | iframe-xhr-polling
Other | same as above | iframe-eventsource | iframe-xhr-polling
# Supported transports, by name
_Transport_ | _References_
---------------------|---------------
websocket (rfc6455) | [rfc 6455][^10]
websocket (hixie-76) | [draft-hixie-thewebsocketprotocol-76][^1]
websocket (hybi-10) | [draft-ietf-hybi-thewebsocketprotocol-10][^2]
xhr-streaming | Transport using [Cross domain XHR][^5] [streaming][^7] capability (readyState=3).
xdr-streaming | Transport using [XDomainRequest][^9] [streaming][^7] capability (readyState=3).
eventsource | [EventSource/Server-sent events][^4].
iframe-eventsource | [EventSource/Server-sent events][^4] used from an [iframe via postMessage][^3].
htmlfile | [HtmlFile][^8].
iframe-htmlfile | [HtmlFile][^8] used from an [iframe via postMessage][^3].
xhr-polling | Long-polling using [cross domain XHR][^5].
xdr-polling | Long-polling using [XDomainRequest][^9].
iframe-xhr-polling | Long-polling using normal AJAX from an [iframe via postMessage][^3].
jsonp-polling | Slow and old fashioned [JSONP polling][^6]. This transport will show "busy indicator" (aka: "spinning wheel") when sending data.
[^1]: https://tools.ietf.org/html/draft-hixie-thewebsocketprotocol-76
[^2]: https://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-10
[^3]: https://developer.mozilla.org/en/DOM/window.postMessage
[^4]: https://html.spec.whatwg.org/multipage/comms.html#server-sent-events
[^5]: https://secure.wikimedia.org/wikipedia/en/wiki/XMLHttpRequest#Cross-domain_requests
[^6]: https://secure.wikimedia.org/wikipedia/en/wiki/JSONP
[^7]: http://www.debugtheweb.com/test/teststreaming.aspx
[^8]: http://cometdaily.com/2007/11/18/ie-activexhtmlfile-transport-part-ii/
[^9]: https://blogs.msdn.microsoft.com/ieinternals/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds/
[^10]: https://www.rfc-editor.org/rfc/rfc6455.txt
# Connecting to SockJS without the client
Although the main point of SockJS is to enable browser-to-server
connectivity, it is possible to connect to SockJS from an external
application. Any SockJS server complying with 0.3 protocol does
support a raw WebSocket url. The raw WebSocket url for the test server
looks like:
* ws://localhost:8081/echo/websocket
You can connect any WebSocket RFC 6455 compliant WebSocket client to
this url. This can be a command line client, external application,
third party code or even a browser (though I don't know why you would
want to do so).
# Deployment
You should use a version of sockjs-client
that supports the protocol used by your server. For example:
```html
<script src="https://cdn.jsdelivr.net/npm/sockjs-client@1/dist/sockjs.min.js"></script>
```
For server-side deployment tricks, especially about load balancing and
session stickiness, take a look at the
[SockJS-node readme](https://github.com/sockjs/sockjs-node#readme).
# Development and testing
SockJS-client needs [node.js](https://nodejs.org/) for running a test
server and JavaScript minification. If you want to work on
SockJS-client source code, checkout the git repo and follow these
steps:
cd sockjs-client
npm install
To generate JavaScript, run:
gulp browserify
To generate minified JavaScript, run:
gulp browserify:min
Both commands output into the `build` directory.
## Testing
Automated testing provided by:
<a href="https://browserstack.com"><img src="img/Browserstack-logo@2x.png" height="50"></a>
Once you've compiled the SockJS-client you may want to check if your changes
pass all the tests.
npm run test:browser_local
This will start [karma](https://karma-runner.github.io) and a test support server.
# Browser Quirks
There are various browser quirks which we don't intend to address:
* Pressing ESC in Firefox, before Firefox 20, closes the SockJS connection. For a workaround
and discussion see [#18](https://github.com/sockjs/sockjs-client/issues/18).
* `jsonp-polling` transport will show a "spinning wheel" (aka. "busy indicator")
when sending data.
* You can't open more than one SockJS connection to one domain at the
same time due to [the browser's limit of concurrent connections](https://stackoverflow.com/questions/985431/max-parallel-http-connections-in-a-browser)
(this limit is not counting native WebSocket connections).
* Although SockJS is trying to escape any strange Unicode characters
(even invalid ones - [like surrogates \xD800-\xDBFF](https://en.wikipedia.org/wiki/Mapping_of_Unicode_characters#Surrogates) or [\xFFFE and \xFFFF](https://en.wikipedia.org/wiki/Unicode#Character_General_Category))
it's advisable to use only valid characters. Using invalid
characters is a bit slower, and may not work with SockJS servers
that have proper Unicode support.
* Having a global function called `onmessage` or such is probably a
bad idea, as it could be called by the built-in `postMessage` API.
* From SockJS' point of view there is nothing special about
SSL/HTTPS. Connecting between unencrypted and encrypted sites
should work just fine.
* Although SockJS does its best to support both prefix and cookie based
sticky sessions, the latter may not work well cross-domain with
browsers that don't accept third-party cookies by default (Safari).
In order to get around this make sure you're connecting to SockJS
from the same parent domain as the main site. For example
'sockjs.a.com' is able to set cookies if you're connecting from
'www.a.com' or 'a.com'.
* Trying to connect from secure "https://" to insecure "http://" is
not a good idea. The other way around should be fine.
* Long polling is known to cause problems on Heroku, but a
[workaround for SockJS is available](https://github.com/sockjs/sockjs-node/issues/57#issuecomment-5242187).
* SockJS [websocket transport is more stable over SSL](https://github.com/sockjs/sockjs-client/issues/94). If
you're a serious SockJS user then consider using SSL
([more info](https://www.ietf.org/mail-archive/web/hybi/current/msg01605.html)).

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'use strict';
var transportList = require('./transport-list');
module.exports = require('./main')(transportList);
// TODO can't get rid of this until all servers do
if ('_sockjs_onload' in global) {
setTimeout(global._sockjs_onload, 1);
}

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'use strict';
var inherits = require('inherits')
, Event = require('./event')
;
function CloseEvent() {
Event.call(this);
this.initEvent('close', false, false);
this.wasClean = false;
this.code = 0;
this.reason = '';
}
inherits(CloseEvent, Event);
module.exports = CloseEvent;

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'use strict';
var inherits = require('inherits')
, EventTarget = require('./eventtarget')
;
function EventEmitter() {
EventTarget.call(this);
}
inherits(EventEmitter, EventTarget);
EventEmitter.prototype.removeAllListeners = function(type) {
if (type) {
delete this._listeners[type];
} else {
this._listeners = {};
}
};
EventEmitter.prototype.once = function(type, listener) {
var self = this
, fired = false;
function g() {
self.removeListener(type, g);
if (!fired) {
fired = true;
listener.apply(this, arguments);
}
}
this.on(type, g);
};
EventEmitter.prototype.emit = function() {
var type = arguments[0];
var listeners = this._listeners[type];
if (!listeners) {
return;
}
// equivalent of Array.prototype.slice.call(arguments, 1);
var l = arguments.length;
var args = new Array(l - 1);
for (var ai = 1; ai < l; ai++) {
args[ai - 1] = arguments[ai];
}
for (var i = 0; i < listeners.length; i++) {
listeners[i].apply(this, args);
}
};
EventEmitter.prototype.on = EventEmitter.prototype.addListener = EventTarget.prototype.addEventListener;
EventEmitter.prototype.removeListener = EventTarget.prototype.removeEventListener;
module.exports.EventEmitter = EventEmitter;

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'use strict';
function Event(eventType) {
this.type = eventType;
}
Event.prototype.initEvent = function(eventType, canBubble, cancelable) {
this.type = eventType;
this.bubbles = canBubble;
this.cancelable = cancelable;
this.timeStamp = +new Date();
return this;
};
Event.prototype.stopPropagation = function() {};
Event.prototype.preventDefault = function() {};
Event.CAPTURING_PHASE = 1;
Event.AT_TARGET = 2;
Event.BUBBLING_PHASE = 3;
module.exports = Event;

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'use strict';
/* Simplified implementation of DOM2 EventTarget.
* http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget
*/
function EventTarget() {
this._listeners = {};
}
EventTarget.prototype.addEventListener = function(eventType, listener) {
if (!(eventType in this._listeners)) {
this._listeners[eventType] = [];
}
var arr = this._listeners[eventType];
// #4
if (arr.indexOf(listener) === -1) {
// Make a copy so as not to interfere with a current dispatchEvent.
arr = arr.concat([listener]);
}
this._listeners[eventType] = arr;
};
EventTarget.prototype.removeEventListener = function(eventType, listener) {
var arr = this._listeners[eventType];
if (!arr) {
return;
}
var idx = arr.indexOf(listener);
if (idx !== -1) {
if (arr.length > 1) {
// Make a copy so as not to interfere with a current dispatchEvent.
this._listeners[eventType] = arr.slice(0, idx).concat(arr.slice(idx + 1));
} else {
delete this._listeners[eventType];
}
return;
}
};
EventTarget.prototype.dispatchEvent = function() {
var event = arguments[0];
var t = event.type;
// equivalent of Array.prototype.slice.call(arguments, 0);
var args = arguments.length === 1 ? [event] : Array.apply(null, arguments);
// TODO: This doesn't match the real behavior; per spec, onfoo get
// their place in line from the /first/ time they're set from
// non-null. Although WebKit bumps it to the end every time it's
// set.
if (this['on' + t]) {
this['on' + t].apply(this, args);
}
if (t in this._listeners) {
// Grab a reference to the listeners list. removeEventListener may alter the list.
var listeners = this._listeners[t];
for (var i = 0; i < listeners.length; i++) {
listeners[i].apply(this, args);
}
}
};
module.exports = EventTarget;

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'use strict';
var inherits = require('inherits')
, Event = require('./event')
;
function TransportMessageEvent(data) {
Event.call(this);
this.initEvent('message', false, false);
this.data = data;
}
inherits(TransportMessageEvent, Event);
module.exports = TransportMessageEvent;

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'use strict';
var iframeUtils = require('./utils/iframe')
;
function FacadeJS(transport) {
this._transport = transport;
transport.on('message', this._transportMessage.bind(this));
transport.on('close', this._transportClose.bind(this));
}
FacadeJS.prototype._transportClose = function(code, reason) {
iframeUtils.postMessage('c', JSON.stringify([code, reason]));
};
FacadeJS.prototype._transportMessage = function(frame) {
iframeUtils.postMessage('t', frame);
};
FacadeJS.prototype._send = function(data) {
this._transport.send(data);
};
FacadeJS.prototype._close = function() {
this._transport.close();
this._transport.removeAllListeners();
};
module.exports = FacadeJS;

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'use strict';
var urlUtils = require('./utils/url')
, eventUtils = require('./utils/event')
, FacadeJS = require('./facade')
, InfoIframeReceiver = require('./info-iframe-receiver')
, iframeUtils = require('./utils/iframe')
, loc = require('./location')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:iframe-bootstrap');
}
module.exports = function(SockJS, availableTransports) {
var transportMap = {};
availableTransports.forEach(function(at) {
if (at.facadeTransport) {
transportMap[at.facadeTransport.transportName] = at.facadeTransport;
}
});
// hard-coded for the info iframe
// TODO see if we can make this more dynamic
transportMap[InfoIframeReceiver.transportName] = InfoIframeReceiver;
var parentOrigin;
/* eslint-disable camelcase */
SockJS.bootstrap_iframe = function() {
/* eslint-enable camelcase */
var facade;
iframeUtils.currentWindowId = loc.hash.slice(1);
var onMessage = function(e) {
if (e.source !== parent) {
return;
}
if (typeof parentOrigin === 'undefined') {
parentOrigin = e.origin;
}
if (e.origin !== parentOrigin) {
return;
}
var iframeMessage;
try {
iframeMessage = JSON.parse(e.data);
} catch (ignored) {
debug('bad json', e.data);
return;
}
if (iframeMessage.windowId !== iframeUtils.currentWindowId) {
return;
}
switch (iframeMessage.type) {
case 's':
var p;
try {
p = JSON.parse(iframeMessage.data);
} catch (ignored) {
debug('bad json', iframeMessage.data);
break;
}
var version = p[0];
var transport = p[1];
var transUrl = p[2];
var baseUrl = p[3];
debug(version, transport, transUrl, baseUrl);
// change this to semver logic
if (version !== SockJS.version) {
throw new Error('Incompatible SockJS! Main site uses:' +
' "' + version + '", the iframe:' +
' "' + SockJS.version + '".');
}
if (!urlUtils.isOriginEqual(transUrl, loc.href) ||
!urlUtils.isOriginEqual(baseUrl, loc.href)) {
throw new Error('Can\'t connect to different domain from within an ' +
'iframe. (' + loc.href + ', ' + transUrl + ', ' + baseUrl + ')');
}
facade = new FacadeJS(new transportMap[transport](transUrl, baseUrl));
break;
case 'm':
facade._send(iframeMessage.data);
break;
case 'c':
if (facade) {
facade._close();
}
facade = null;
break;
}
};
eventUtils.attachEvent('message', onMessage);
// Start
iframeUtils.postMessage('s');
};
};

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'use strict';
var EventEmitter = require('events').EventEmitter
, inherits = require('inherits')
, objectUtils = require('./utils/object')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:info-ajax');
}
function InfoAjax(url, AjaxObject) {
EventEmitter.call(this);
var self = this;
var t0 = +new Date();
this.xo = new AjaxObject('GET', url);
this.xo.once('finish', function(status, text) {
var info, rtt;
if (status === 200) {
rtt = (+new Date()) - t0;
if (text) {
try {
info = JSON.parse(text);
} catch (e) {
debug('bad json', text);
}
}
if (!objectUtils.isObject(info)) {
info = {};
}
}
self.emit('finish', info, rtt);
self.removeAllListeners();
});
}
inherits(InfoAjax, EventEmitter);
InfoAjax.prototype.close = function() {
this.removeAllListeners();
this.xo.close();
};
module.exports = InfoAjax;

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'use strict';
var inherits = require('inherits')
, EventEmitter = require('events').EventEmitter
, XHRLocalObject = require('./transport/sender/xhr-local')
, InfoAjax = require('./info-ajax')
;
function InfoReceiverIframe(transUrl) {
var self = this;
EventEmitter.call(this);
this.ir = new InfoAjax(transUrl, XHRLocalObject);
this.ir.once('finish', function(info, rtt) {
self.ir = null;
self.emit('message', JSON.stringify([info, rtt]));
});
}
inherits(InfoReceiverIframe, EventEmitter);
InfoReceiverIframe.transportName = 'iframe-info-receiver';
InfoReceiverIframe.prototype.close = function() {
if (this.ir) {
this.ir.close();
this.ir = null;
}
this.removeAllListeners();
};
module.exports = InfoReceiverIframe;

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'use strict';
var EventEmitter = require('events').EventEmitter
, inherits = require('inherits')
, utils = require('./utils/event')
, IframeTransport = require('./transport/iframe')
, InfoReceiverIframe = require('./info-iframe-receiver')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:info-iframe');
}
function InfoIframe(baseUrl, url) {
var self = this;
EventEmitter.call(this);
var go = function() {
var ifr = self.ifr = new IframeTransport(InfoReceiverIframe.transportName, url, baseUrl);
ifr.once('message', function(msg) {
if (msg) {
var d;
try {
d = JSON.parse(msg);
} catch (e) {
debug('bad json', msg);
self.emit('finish');
self.close();
return;
}
var info = d[0], rtt = d[1];
self.emit('finish', info, rtt);
}
self.close();
});
ifr.once('close', function() {
self.emit('finish');
self.close();
});
};
// TODO this seems the same as the 'needBody' from transports
if (!global.document.body) {
utils.attachEvent('load', go);
} else {
go();
}
}
inherits(InfoIframe, EventEmitter);
InfoIframe.enabled = function() {
return IframeTransport.enabled();
};
InfoIframe.prototype.close = function() {
if (this.ifr) {
this.ifr.close();
}
this.removeAllListeners();
this.ifr = null;
};
module.exports = InfoIframe;

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'use strict';
var EventEmitter = require('events').EventEmitter
, inherits = require('inherits')
, urlUtils = require('./utils/url')
, XDR = require('./transport/sender/xdr')
, XHRCors = require('./transport/sender/xhr-cors')
, XHRLocal = require('./transport/sender/xhr-local')
, XHRFake = require('./transport/sender/xhr-fake')
, InfoIframe = require('./info-iframe')
, InfoAjax = require('./info-ajax')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:info-receiver');
}
function InfoReceiver(baseUrl, urlInfo) {
debug(baseUrl);
var self = this;
EventEmitter.call(this);
setTimeout(function() {
self.doXhr(baseUrl, urlInfo);
}, 0);
}
inherits(InfoReceiver, EventEmitter);
// TODO this is currently ignoring the list of available transports and the whitelist
InfoReceiver._getReceiver = function(baseUrl, url, urlInfo) {
// determine method of CORS support (if needed)
if (urlInfo.sameOrigin) {
return new InfoAjax(url, XHRLocal);
}
if (XHRCors.enabled) {
return new InfoAjax(url, XHRCors);
}
if (XDR.enabled && urlInfo.sameScheme) {
return new InfoAjax(url, XDR);
}
if (InfoIframe.enabled()) {
return new InfoIframe(baseUrl, url);
}
return new InfoAjax(url, XHRFake);
};
InfoReceiver.prototype.doXhr = function(baseUrl, urlInfo) {
var self = this
, url = urlUtils.addPath(baseUrl, '/info')
;
debug('doXhr', url);
this.xo = InfoReceiver._getReceiver(baseUrl, url, urlInfo);
this.timeoutRef = setTimeout(function() {
debug('timeout');
self._cleanup(false);
self.emit('finish');
}, InfoReceiver.timeout);
this.xo.once('finish', function(info, rtt) {
debug('finish', info, rtt);
self._cleanup(true);
self.emit('finish', info, rtt);
});
};
InfoReceiver.prototype._cleanup = function(wasClean) {
debug('_cleanup');
clearTimeout(this.timeoutRef);
this.timeoutRef = null;
if (!wasClean && this.xo) {
this.xo.close();
}
this.xo = null;
};
InfoReceiver.prototype.close = function() {
debug('close');
this.removeAllListeners();
this._cleanup(false);
};
InfoReceiver.timeout = 8000;
module.exports = InfoReceiver;

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

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'use strict';
require('./shims');
var URL = require('url-parse')
, inherits = require('inherits')
, random = require('./utils/random')
, escape = require('./utils/escape')
, urlUtils = require('./utils/url')
, eventUtils = require('./utils/event')
, transport = require('./utils/transport')
, objectUtils = require('./utils/object')
, browser = require('./utils/browser')
, log = require('./utils/log')
, Event = require('./event/event')
, EventTarget = require('./event/eventtarget')
, loc = require('./location')
, CloseEvent = require('./event/close')
, TransportMessageEvent = require('./event/trans-message')
, InfoReceiver = require('./info-receiver')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:main');
}
var transports;
// follow constructor steps defined at http://dev.w3.org/html5/websockets/#the-websocket-interface
function SockJS(url, protocols, options) {
if (!(this instanceof SockJS)) {
return new SockJS(url, protocols, options);
}
if (arguments.length < 1) {
throw new TypeError("Failed to construct 'SockJS: 1 argument required, but only 0 present");
}
EventTarget.call(this);
this.readyState = SockJS.CONNECTING;
this.extensions = '';
this.protocol = '';
// non-standard extension
options = options || {};
if (options.protocols_whitelist) {
log.warn("'protocols_whitelist' is DEPRECATED. Use 'transports' instead.");
}
this._transportsWhitelist = options.transports;
this._transportOptions = options.transportOptions || {};
this._timeout = options.timeout || 0;
var sessionId = options.sessionId || 8;
if (typeof sessionId === 'function') {
this._generateSessionId = sessionId;
} else if (typeof sessionId === 'number') {
this._generateSessionId = function() {
return random.string(sessionId);
};
} else {
throw new TypeError('If sessionId is used in the options, it needs to be a number or a function.');
}
this._server = options.server || random.numberString(1000);
// Step 1 of WS spec - parse and validate the url. Issue #8
var parsedUrl = new URL(url);
if (!parsedUrl.host || !parsedUrl.protocol) {
throw new SyntaxError("The URL '" + url + "' is invalid");
} else if (parsedUrl.hash) {
throw new SyntaxError('The URL must not contain a fragment');
} else if (parsedUrl.protocol !== 'http:' && parsedUrl.protocol !== 'https:') {
throw new SyntaxError("The URL's scheme must be either 'http:' or 'https:'. '" + parsedUrl.protocol + "' is not allowed.");
}
var secure = parsedUrl.protocol === 'https:';
// Step 2 - don't allow secure origin with an insecure protocol
if (loc.protocol === 'https:' && !secure) {
// 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
var sortedProtocols = protocols.sort();
sortedProtocols.forEach(function(proto, i) {
if (!proto) {
throw new SyntaxError("The protocols entry '" + proto + "' is invalid.");
}
if (i < (sortedProtocols.length - 1) && proto === sortedProtocols[i + 1]) {
throw new SyntaxError("The protocols entry '" + proto + "' is duplicated.");
}
});
// Step 6 - convert origin
var o = urlUtils.getOrigin(loc.href);
this._origin = o ? o.toLowerCase() : null;
// remove the trailing slash
parsedUrl.set('pathname', parsedUrl.pathname.replace(/\/+$/, ''));
// store the sanitized url
this.url = parsedUrl.href;
debug('using url', this.url);
// Step 7 - start connection in background
// obtain server info
// http://sockjs.github.io/sockjs-protocol/sockjs-protocol-0.3.3.html#section-26
this._urlInfo = {
nullOrigin: !browser.hasDomain()
, sameOrigin: urlUtils.isOriginEqual(this.url, loc.href)
, sameScheme: urlUtils.isSchemeEqual(this.url, loc.href)
};
this._ir = new InfoReceiver(this.url, this._urlInfo);
this._ir.once('finish', this._receiveInfo.bind(this));
}
inherits(SockJS, EventTarget);
function userSetCode(code) {
return code === 1000 || (code >= 3000 && code <= 4999);
}
SockJS.prototype.close = function(code, reason) {
// Step 1
if (code && !userSetCode(code)) {
throw new Error('InvalidAccessError: Invalid code');
}
// Step 2.4 states the max is 123 bytes, but we are just checking length
if (reason && reason.length > 123) {
throw new SyntaxError('reason argument has an invalid length');
}
// Step 3.1
if (this.readyState === SockJS.CLOSING || this.readyState === SockJS.CLOSED) {
return;
}
// TODO look at docs to determine how to set this
var wasClean = true;
this._close(code || 1000, reason || 'Normal closure', wasClean);
};
SockJS.prototype.send = function(data) {
// #13 - convert anything non-string to string
// TODO this currently turns objects into [object Object]
if (typeof data !== 'string') {
data = '' + data;
}
if (this.readyState === SockJS.CONNECTING) {
throw new Error('InvalidStateError: The connection has not been established yet');
}
if (this.readyState !== SockJS.OPEN) {
return;
}
this._transport.send(escape.quote(data));
};
SockJS.version = require('./version');
SockJS.CONNECTING = 0;
SockJS.OPEN = 1;
SockJS.CLOSING = 2;
SockJS.CLOSED = 3;
SockJS.prototype._receiveInfo = function(info, rtt) {
debug('_receiveInfo', rtt);
this._ir = null;
if (!info) {
this._close(1002, 'Cannot connect to server');
return;
}
// establish a round-trip timeout (RTO) based on the
// round-trip time (RTT)
this._rto = this.countRTO(rtt);
// allow server to override url used for the actual transport
this._transUrl = info.base_url ? info.base_url : this.url;
info = objectUtils.extend(info, this._urlInfo);
debug('info', info);
// determine list of desired and supported transports
var enabledTransports = transports.filterToEnabled(this._transportsWhitelist, info);
this._transports = enabledTransports.main;
debug(this._transports.length + ' enabled transports');
this._connect();
};
SockJS.prototype._connect = function() {
for (var Transport = this._transports.shift(); Transport; Transport = this._transports.shift()) {
debug('attempt', Transport.transportName);
if (Transport.needBody) {
if (!global.document.body ||
(typeof global.document.readyState !== 'undefined' &&
global.document.readyState !== 'complete' &&
global.document.readyState !== 'interactive')) {
debug('waiting for body');
this._transports.unshift(Transport);
eventUtils.attachEvent('load', this._connect.bind(this));
return;
}
}
// calculate timeout based on RTO and round trips. Default to 5s
var timeoutMs = Math.max(this._timeout, (this._rto * Transport.roundTrips) || 5000);
this._transportTimeoutId = setTimeout(this._transportTimeout.bind(this), timeoutMs);
debug('using timeout', timeoutMs);
var transportUrl = urlUtils.addPath(this._transUrl, '/' + this._server + '/' + this._generateSessionId());
var options = this._transportOptions[Transport.transportName];
debug('transport url', transportUrl);
var transportObj = new Transport(transportUrl, this._transUrl, options);
transportObj.on('message', this._transportMessage.bind(this));
transportObj.once('close', this._transportClose.bind(this));
transportObj.transportName = Transport.transportName;
this._transport = transportObj;
return;
}
this._close(2000, 'All transports failed', false);
};
SockJS.prototype._transportTimeout = function() {
debug('_transportTimeout');
if (this.readyState === SockJS.CONNECTING) {
if (this._transport) {
this._transport.close();
}
this._transportClose(2007, 'Transport timed out');
}
};
SockJS.prototype._transportMessage = function(msg) {
debug('_transportMessage', msg);
var self = this
, type = msg.slice(0, 1)
, content = msg.slice(1)
, payload
;
// first check for messages that don't need a payload
switch (type) {
case 'o':
this._open();
return;
case 'h':
this.dispatchEvent(new Event('heartbeat'));
debug('heartbeat', this.transport);
return;
}
if (content) {
try {
payload = JSON.parse(content);
} catch (e) {
debug('bad json', content);
}
}
if (typeof payload === 'undefined') {
debug('empty payload', content);
return;
}
switch (type) {
case 'a':
if (Array.isArray(payload)) {
payload.forEach(function(p) {
debug('message', self.transport, p);
self.dispatchEvent(new TransportMessageEvent(p));
});
}
break;
case 'm':
debug('message', this.transport, payload);
this.dispatchEvent(new TransportMessageEvent(payload));
break;
case 'c':
if (Array.isArray(payload) && payload.length === 2) {
this._close(payload[0], payload[1], true);
}
break;
}
};
SockJS.prototype._transportClose = function(code, reason) {
debug('_transportClose', this.transport, code, reason);
if (this._transport) {
this._transport.removeAllListeners();
this._transport = null;
this.transport = null;
}
if (!userSetCode(code) && code !== 2000 && this.readyState === SockJS.CONNECTING) {
this._connect();
return;
}
this._close(code, reason);
};
SockJS.prototype._open = function() {
debug('_open', this._transport && this._transport.transportName, this.readyState);
if (this.readyState === SockJS.CONNECTING) {
if (this._transportTimeoutId) {
clearTimeout(this._transportTimeoutId);
this._transportTimeoutId = null;
}
this.readyState = SockJS.OPEN;
this.transport = this._transport.transportName;
this.dispatchEvent(new Event('open'));
debug('connected', this.transport);
} else {
// The server might have been restarted, and lost track of our
// connection.
this._close(1006, 'Server lost session');
}
};
SockJS.prototype._close = function(code, reason, wasClean) {
debug('_close', this.transport, code, reason, wasClean, this.readyState);
var forceFail = false;
if (this._ir) {
forceFail = true;
this._ir.close();
this._ir = null;
}
if (this._transport) {
this._transport.close();
this._transport = null;
this.transport = null;
}
if (this.readyState === SockJS.CLOSED) {
throw new Error('InvalidStateError: SockJS has already been closed');
}
this.readyState = SockJS.CLOSING;
setTimeout(function() {
this.readyState = SockJS.CLOSED;
if (forceFail) {
this.dispatchEvent(new Event('error'));
}
var e = new CloseEvent('close');
e.wasClean = wasClean || false;
e.code = code || 1000;
e.reason = reason;
this.dispatchEvent(e);
this.onmessage = this.onclose = this.onerror = null;
debug('disconnected');
}.bind(this), 0);
};
// See: http://www.erg.abdn.ac.uk/~gerrit/dccp/notes/ccid2/rto_estimator/
// and RFC 2988.
SockJS.prototype.countRTO = function(rtt) {
// In a local environment, when using IE8/9 and the `jsonp-polling`
// transport the time needed to establish a connection (the time that pass
// from the opening of the transport to the call of `_dispatchOpen`) is
// around 200msec (the lower bound used in the article above) and this
// causes spurious timeouts. For this reason we calculate a value slightly
// larger than that used in the article.
if (rtt > 100) {
return 4 * rtt; // rto > 400msec
}
return 300 + rtt; // 300msec < rto <= 400msec
};
module.exports = function(availableTransports) {
transports = transport(availableTransports);
require('./iframe-bootstrap')(SockJS, availableTransports);
return SockJS;
};

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/* eslint-disable */
/* jscs: disable */
'use strict';
// pulled specific shims from https://github.com/es-shims/es5-shim
var ArrayPrototype = Array.prototype;
var ObjectPrototype = Object.prototype;
var FunctionPrototype = Function.prototype;
var StringPrototype = String.prototype;
var array_slice = ArrayPrototype.slice;
var _toString = ObjectPrototype.toString;
var isFunction = function (val) {
return ObjectPrototype.toString.call(val) === '[object Function]';
};
var isArray = function isArray(obj) {
return _toString.call(obj) === '[object Array]';
};
var isString = function isString(obj) {
return _toString.call(obj) === '[object String]';
};
var supportsDescriptors = Object.defineProperty && (function () {
try {
Object.defineProperty({}, 'x', {});
return true;
} catch (e) { /* this is ES3 */
return false;
}
}());
// Define configurable, writable and non-enumerable props
// if they don't exist.
var defineProperty;
if (supportsDescriptors) {
defineProperty = function (object, name, method, forceAssign) {
if (!forceAssign && (name in object)) { return; }
Object.defineProperty(object, name, {
configurable: true,
enumerable: false,
writable: true,
value: method
});
};
} else {
defineProperty = function (object, name, method, forceAssign) {
if (!forceAssign && (name in object)) { return; }
object[name] = method;
};
}
var defineProperties = function (object, map, forceAssign) {
for (var name in map) {
if (ObjectPrototype.hasOwnProperty.call(map, name)) {
defineProperty(object, name, map[name], forceAssign);
}
}
};
var toObject = function (o) {
if (o == null) { // this matches both null and undefined
throw new TypeError("can't convert " + o + ' to object');
}
return Object(o);
};
//
// Util
// ======
//
// ES5 9.4
// http://es5.github.com/#x9.4
// http://jsperf.com/to-integer
function toInteger(num) {
var n = +num;
if (n !== n) { // isNaN
n = 0;
} else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0)) {
n = (n > 0 || -1) * Math.floor(Math.abs(n));
}
return n;
}
function ToUint32(x) {
return x >>> 0;
}
//
// Function
// ========
//
// ES-5 15.3.4.5
// http://es5.github.com/#x15.3.4.5
function Empty() {}
defineProperties(FunctionPrototype, {
bind: function bind(that) { // .length is 1
// 1. Let Target be the this value.
var target = this;
// 2. If IsCallable(Target) is false, throw a TypeError exception.
if (!isFunction(target)) {
throw new TypeError('Function.prototype.bind called on incompatible ' + target);
}
// 3. Let A be a new (possibly empty) internal list of all of the
// argument values provided after thisArg (arg1, arg2 etc), in order.
// XXX slicedArgs will stand in for "A" if used
var args = array_slice.call(arguments, 1); // for normal call
// 4. Let F be a new native ECMAScript object.
// 11. Set the [[Prototype]] internal property of F to the standard
// built-in Function prototype object as specified in 15.3.3.1.
// 12. Set the [[Call]] internal property of F as described in
// 15.3.4.5.1.
// 13. Set the [[Construct]] internal property of F as described in
// 15.3.4.5.2.
// 14. Set the [[HasInstance]] internal property of F as described in
// 15.3.4.5.3.
var binder = function () {
if (this instanceof bound) {
// 15.3.4.5.2 [[Construct]]
// When the [[Construct]] internal method of a function object,
// F that was created using the bind function is called with a
// list of arguments ExtraArgs, the following steps are taken:
// 1. Let target be the value of F's [[TargetFunction]]
// internal property.
// 2. If target has no [[Construct]] internal method, a
// TypeError exception is thrown.
// 3. Let boundArgs be the value of F's [[BoundArgs]] internal
// property.
// 4. Let args be a new list containing the same values as the
// list boundArgs in the same order followed by the same
// values as the list ExtraArgs in the same order.
// 5. Return the result of calling the [[Construct]] internal
// method of target providing args as the arguments.
var result = target.apply(
this,
args.concat(array_slice.call(arguments))
);
if (Object(result) === result) {
return result;
}
return this;
} else {
// 15.3.4.5.1 [[Call]]
// When the [[Call]] internal method of a function object, F,
// which was created using the bind function is called with a
// this value and a list of arguments ExtraArgs, the following
// steps are taken:
// 1. Let boundArgs be the value of F's [[BoundArgs]] internal
// property.
// 2. Let boundThis be the value of F's [[BoundThis]] internal
// property.
// 3. Let target be the value of F's [[TargetFunction]] internal
// property.
// 4. Let args be a new list containing the same values as the
// list boundArgs in the same order followed by the same
// values as the list ExtraArgs in the same order.
// 5. Return the result of calling the [[Call]] internal method
// of target providing boundThis as the this value and
// providing args as the arguments.
// equiv: target.call(this, ...boundArgs, ...args)
return target.apply(
that,
args.concat(array_slice.call(arguments))
);
}
};
// 15. If the [[Class]] internal property of Target is "Function", then
// a. Let L be the length property of Target minus the length of A.
// b. Set the length own property of F to either 0 or L, whichever is
// larger.
// 16. Else set the length own property of F to 0.
var boundLength = Math.max(0, target.length - args.length);
// 17. Set the attributes of the length own property of F to the values
// specified in 15.3.5.1.
var boundArgs = [];
for (var i = 0; i < boundLength; i++) {
boundArgs.push('$' + i);
}
// XXX Build a dynamic function with desired amount of arguments is the only
// way to set the length property of a function.
// In environments where Content Security Policies enabled (Chrome extensions,
// for ex.) all use of eval or Function costructor throws an exception.
// However in all of these environments Function.prototype.bind exists
// and so this code will never be executed.
var bound = Function('binder', 'return function (' + boundArgs.join(',') + '){ return binder.apply(this, arguments); }')(binder);
if (target.prototype) {
Empty.prototype = target.prototype;
bound.prototype = new Empty();
// Clean up dangling references.
Empty.prototype = null;
}
// TODO
// 18. Set the [[Extensible]] internal property of F to true.
// TODO
// 19. Let thrower be the [[ThrowTypeError]] function Object (13.2.3).
// 20. Call the [[DefineOwnProperty]] internal method of F with
// arguments "caller", PropertyDescriptor {[[Get]]: thrower, [[Set]]:
// thrower, [[Enumerable]]: false, [[Configurable]]: false}, and
// false.
// 21. Call the [[DefineOwnProperty]] internal method of F with
// arguments "arguments", PropertyDescriptor {[[Get]]: thrower,
// [[Set]]: thrower, [[Enumerable]]: false, [[Configurable]]: false},
// and false.
// TODO
// NOTE Function objects created using Function.prototype.bind do not
// have a prototype property or the [[Code]], [[FormalParameters]], and
// [[Scope]] internal properties.
// XXX can't delete prototype in pure-js.
// 22. Return F.
return bound;
}
});
//
// Array
// =====
//
// ES5 15.4.3.2
// http://es5.github.com/#x15.4.3.2
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray
defineProperties(Array, { isArray: isArray });
var boxedString = Object('a');
var splitString = boxedString[0] !== 'a' || !(0 in boxedString);
var properlyBoxesContext = function properlyBoxed(method) {
// Check node 0.6.21 bug where third parameter is not boxed
var properlyBoxesNonStrict = true;
var properlyBoxesStrict = true;
if (method) {
method.call('foo', function (_, __, context) {
if (typeof context !== 'object') { properlyBoxesNonStrict = false; }
});
method.call([1], function () {
'use strict';
properlyBoxesStrict = typeof this === 'string';
}, 'x');
}
return !!method && properlyBoxesNonStrict && properlyBoxesStrict;
};
defineProperties(ArrayPrototype, {
forEach: function forEach(fun /*, thisp*/) {
var object = toObject(this),
self = splitString && isString(this) ? this.split('') : object,
thisp = arguments[1],
i = -1,
length = self.length >>> 0;
// If no callback function or if callback is not a callable function
if (!isFunction(fun)) {
throw new TypeError(); // TODO message
}
while (++i < length) {
if (i in self) {
// Invoke the callback function with call, passing arguments:
// context, property value, property key, thisArg object
// context
fun.call(thisp, self[i], i, object);
}
}
}
}, !properlyBoxesContext(ArrayPrototype.forEach));
// ES5 15.4.4.14
// http://es5.github.com/#x15.4.4.14
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf
var hasFirefox2IndexOfBug = Array.prototype.indexOf && [0, 1].indexOf(1, 2) !== -1;
defineProperties(ArrayPrototype, {
indexOf: function indexOf(sought /*, fromIndex */ ) {
var self = splitString && isString(this) ? this.split('') : toObject(this),
length = self.length >>> 0;
if (!length) {
return -1;
}
var i = 0;
if (arguments.length > 1) {
i = toInteger(arguments[1]);
}
// handle negative indices
i = i >= 0 ? i : Math.max(0, length + i);
for (; i < length; i++) {
if (i in self && self[i] === sought) {
return i;
}
}
return -1;
}
}, hasFirefox2IndexOfBug);
//
// String
// ======
//
// ES5 15.5.4.14
// http://es5.github.com/#x15.5.4.14
// [bugfix, IE lt 9, firefox 4, Konqueror, Opera, obscure browsers]
// Many browsers do not split properly with regular expressions or they
// do not perform the split correctly under obscure conditions.
// See http://blog.stevenlevithan.com/archives/cross-browser-split
// I've tested in many browsers and this seems to cover the deviant ones:
// 'ab'.split(/(?:ab)*/) should be ["", ""], not [""]
// '.'.split(/(.?)(.?)/) should be ["", ".", "", ""], not ["", ""]
// 'tesst'.split(/(s)*/) should be ["t", undefined, "e", "s", "t"], not
// [undefined, "t", undefined, "e", ...]
// ''.split(/.?/) should be [], not [""]
// '.'.split(/()()/) should be ["."], not ["", "", "."]
var string_split = StringPrototype.split;
if (
'ab'.split(/(?:ab)*/).length !== 2 ||
'.'.split(/(.?)(.?)/).length !== 4 ||
'tesst'.split(/(s)*/)[1] === 't' ||
'test'.split(/(?:)/, -1).length !== 4 ||
''.split(/.?/).length ||
'.'.split(/()()/).length > 1
) {
(function () {
var compliantExecNpcg = /()??/.exec('')[1] === void 0; // NPCG: nonparticipating capturing group
StringPrototype.split = function (separator, limit) {
var string = this;
if (separator === void 0 && limit === 0) {
return [];
}
// If `separator` is not a regex, use native split
if (_toString.call(separator) !== '[object RegExp]') {
return string_split.call(this, separator, limit);
}
var output = [],
flags = (separator.ignoreCase ? 'i' : '') +
(separator.multiline ? 'm' : '') +
(separator.extended ? 'x' : '') + // Proposed for ES6
(separator.sticky ? 'y' : ''), // Firefox 3+
lastLastIndex = 0,
// Make `global` and avoid `lastIndex` issues by working with a copy
separator2, match, lastIndex, lastLength;
separator = new RegExp(separator.source, flags + 'g');
string += ''; // Type-convert
if (!compliantExecNpcg) {
// Doesn't need flags gy, but they don't hurt
separator2 = new RegExp('^' + separator.source + '$(?!\\s)', flags);
}
/* Values for `limit`, per the spec:
* If undefined: 4294967295 // Math.pow(2, 32) - 1
* If 0, Infinity, or NaN: 0
* If positive number: limit = Math.floor(limit); if (limit > 4294967295) limit -= 4294967296;
* If negative number: 4294967296 - Math.floor(Math.abs(limit))
* If other: Type-convert, then use the above rules
*/
limit = limit === void 0 ?
-1 >>> 0 : // Math.pow(2, 32) - 1
ToUint32(limit);
while (match = separator.exec(string)) {
// `separator.lastIndex` is not reliable cross-browser
lastIndex = match.index + match[0].length;
if (lastIndex > lastLastIndex) {
output.push(string.slice(lastLastIndex, match.index));
// Fix browsers whose `exec` methods don't consistently return `undefined` for
// nonparticipating capturing groups
if (!compliantExecNpcg && match.length > 1) {
match[0].replace(separator2, function () {
for (var i = 1; i < arguments.length - 2; i++) {
if (arguments[i] === void 0) {
match[i] = void 0;
}
}
});
}
if (match.length > 1 && match.index < string.length) {
ArrayPrototype.push.apply(output, match.slice(1));
}
lastLength = match[0].length;
lastLastIndex = lastIndex;
if (output.length >= limit) {
break;
}
}
if (separator.lastIndex === match.index) {
separator.lastIndex++; // Avoid an infinite loop
}
}
if (lastLastIndex === string.length) {
if (lastLength || !separator.test('')) {
output.push('');
}
} else {
output.push(string.slice(lastLastIndex));
}
return output.length > limit ? output.slice(0, limit) : output;
};
}());
// [bugfix, chrome]
// If separator is undefined, then the result array contains just one String,
// which is the this value (converted to a String). If limit is not undefined,
// then the output array is truncated so that it contains no more than limit
// elements.
// "0".split(undefined, 0) -> []
} else if ('0'.split(void 0, 0).length) {
StringPrototype.split = function split(separator, limit) {
if (separator === void 0 && limit === 0) { return []; }
return string_split.call(this, separator, limit);
};
}
// ECMA-262, 3rd B.2.3
// Not an ECMAScript standard, although ECMAScript 3rd Edition has a
// non-normative section suggesting uniform semantics and it should be
// normalized across all browsers
// [bugfix, IE lt 9] IE < 9 substr() with negative value not working in IE
var string_substr = StringPrototype.substr;
var hasNegativeSubstrBug = ''.substr && '0b'.substr(-1) !== 'b';
defineProperties(StringPrototype, {
substr: function substr(start, length) {
return string_substr.call(
this,
start < 0 ? ((start = this.length + start) < 0 ? 0 : start) : start,
length
);
}
}, hasNegativeSubstrBug);

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node_modules/sockjs-client/lib/transport-list.js generated vendored Normal file
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'use strict';
module.exports = [
// streaming transports
require('./transport/websocket')
, require('./transport/xhr-streaming')
, require('./transport/xdr-streaming')
, require('./transport/eventsource')
, require('./transport/lib/iframe-wrap')(require('./transport/eventsource'))
// polling transports
, require('./transport/htmlfile')
, require('./transport/lib/iframe-wrap')(require('./transport/htmlfile'))
, require('./transport/xhr-polling')
, require('./transport/xdr-polling')
, require('./transport/lib/iframe-wrap')(require('./transport/xhr-polling'))
, require('./transport/jsonp-polling')
];

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node_modules/sockjs-client/lib/transport/browser/abstract-xhr.js generated vendored Normal file
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'use strict';
var EventEmitter = require('events').EventEmitter
, inherits = require('inherits')
, utils = require('../../utils/event')
, urlUtils = require('../../utils/url')
, XHR = global.XMLHttpRequest
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:browser:xhr');
}
function AbstractXHRObject(method, url, payload, opts) {
debug(method, url);
var self = this;
EventEmitter.call(this);
setTimeout(function () {
self._start(method, url, payload, opts);
}, 0);
}
inherits(AbstractXHRObject, EventEmitter);
AbstractXHRObject.prototype._start = function(method, url, payload, opts) {
var self = this;
try {
this.xhr = new XHR();
} catch (x) {
// intentionally empty
}
if (!this.xhr) {
debug('no xhr');
this.emit('finish', 0, 'no xhr support');
this._cleanup();
return;
}
// several browsers cache POSTs
url = urlUtils.addQuery(url, 't=' + (+new Date()));
// Explorer tends to keep connection open, even after the
// tab gets closed: http://bugs.jquery.com/ticket/5280
this.unloadRef = utils.unloadAdd(function() {
debug('unload cleanup');
self._cleanup(true);
});
try {
this.xhr.open(method, url, true);
if (this.timeout && 'timeout' in this.xhr) {
this.xhr.timeout = this.timeout;
this.xhr.ontimeout = function() {
debug('xhr timeout');
self.emit('finish', 0, '');
self._cleanup(false);
};
}
} catch (e) {
debug('exception', e);
// IE raises an exception on wrong port.
this.emit('finish', 0, '');
this._cleanup(false);
return;
}
if ((!opts || !opts.noCredentials) && AbstractXHRObject.supportsCORS) {
debug('withCredentials');
// Mozilla docs says https://developer.mozilla.org/en/XMLHttpRequest :
// "This never affects same-site requests."
this.xhr.withCredentials = true;
}
if (opts && opts.headers) {
for (var key in opts.headers) {
this.xhr.setRequestHeader(key, opts.headers[key]);
}
}
this.xhr.onreadystatechange = function() {
if (self.xhr) {
var x = self.xhr;
var text, status;
debug('readyState', x.readyState);
switch (x.readyState) {
case 3:
// IE doesn't like peeking into responseText or status
// on Microsoft.XMLHTTP and readystate=3
try {
status = x.status;
text = x.responseText;
} catch (e) {
// intentionally empty
}
debug('status', status);
// IE returns 1223 for 204: http://bugs.jquery.com/ticket/1450
if (status === 1223) {
status = 204;
}
// IE does return readystate == 3 for 404 answers.
if (status === 200 && text && text.length > 0) {
debug('chunk');
self.emit('chunk', status, text);
}
break;
case 4:
status = x.status;
debug('status', status);
// IE returns 1223 for 204: http://bugs.jquery.com/ticket/1450
if (status === 1223) {
status = 204;
}
// IE returns this for a bad port
// http://msdn.microsoft.com/en-us/library/windows/desktop/aa383770(v=vs.85).aspx
if (status === 12005 || status === 12029) {
status = 0;
}
debug('finish', status, x.responseText);
self.emit('finish', status, x.responseText);
self._cleanup(false);
break;
}
}
};
try {
self.xhr.send(payload);
} catch (e) {
self.emit('finish', 0, '');
self._cleanup(false);
}
};
AbstractXHRObject.prototype._cleanup = function(abort) {
debug('cleanup');
if (!this.xhr) {
return;
}
this.removeAllListeners();
utils.unloadDel(this.unloadRef);
// IE needs this field to be a function
this.xhr.onreadystatechange = function() {};
if (this.xhr.ontimeout) {
this.xhr.ontimeout = null;
}
if (abort) {
try {
this.xhr.abort();
} catch (x) {
// intentionally empty
}
}
this.unloadRef = this.xhr = null;
};
AbstractXHRObject.prototype.close = function() {
debug('close');
this._cleanup(true);
};
AbstractXHRObject.enabled = !!XHR;
// override XMLHttpRequest for IE6/7
// obfuscate to avoid firewalls
var axo = ['Active'].concat('Object').join('X');
if (!AbstractXHRObject.enabled && (axo in global)) {
debug('overriding xmlhttprequest');
XHR = function() {
try {
return new global[axo]('Microsoft.XMLHTTP');
} catch (e) {
return null;
}
};
AbstractXHRObject.enabled = !!new XHR();
}
var cors = false;
try {
cors = 'withCredentials' in new XHR();
} catch (ignored) {
// intentionally empty
}
AbstractXHRObject.supportsCORS = cors;
module.exports = AbstractXHRObject;

1
node_modules/sockjs-client/lib/transport/browser/eventsource.js generated vendored Normal file
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module.exports = global.EventSource;

10
node_modules/sockjs-client/lib/transport/browser/websocket.js generated vendored Normal file
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'use strict';
var Driver = global.WebSocket || global.MozWebSocket;
if (Driver) {
module.exports = function WebSocketBrowserDriver(url) {
return new Driver(url);
};
} else {
module.exports = undefined;
}

1
node_modules/sockjs-client/lib/transport/driver/eventsource.js generated vendored Normal file
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module.exports = require('eventsource');

1
node_modules/sockjs-client/lib/transport/driver/websocket.js generated vendored Normal file
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module.exports = require('faye-websocket').Client;

71
node_modules/sockjs-client/lib/transport/driver/xhr.js generated vendored Normal file
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'use strict';
var EventEmitter = require('events').EventEmitter
, inherits = require('inherits')
, http = require('http')
, https = require('https')
, URL = require('url-parse')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:driver:xhr');
}
function XhrDriver(method, url, payload, opts) {
debug(method, url, payload);
var self = this;
EventEmitter.call(this);
var parsedUrl = new URL(url);
var options = {
method: method
, hostname: parsedUrl.hostname.replace(/\[|\]/g, '')
, port: parsedUrl.port
, path: parsedUrl.pathname + (parsedUrl.query || '')
, headers: opts && opts.headers
};
var protocol = parsedUrl.protocol === 'https:' ? https : http;
this.req = protocol.request(options, function(res) {
res.setEncoding('utf8');
var 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;
module.exports = XhrDriver;

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node_modules/sockjs-client/lib/transport/eventsource.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, AjaxBasedTransport = require('./lib/ajax-based')
, EventSourceReceiver = require('./receiver/eventsource')
, XHRCorsObject = require('./sender/xhr-cors')
, EventSourceDriver = require('eventsource')
;
function EventSourceTransport(transUrl) {
if (!EventSourceTransport.enabled()) {
throw new Error('Transport created when disabled');
}
AjaxBasedTransport.call(this, transUrl, '/eventsource', EventSourceReceiver, XHRCorsObject);
}
inherits(EventSourceTransport, AjaxBasedTransport);
EventSourceTransport.enabled = function() {
return !!EventSourceDriver;
};
EventSourceTransport.transportName = 'eventsource';
EventSourceTransport.roundTrips = 2;
module.exports = EventSourceTransport;

25
node_modules/sockjs-client/lib/transport/htmlfile.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, HtmlfileReceiver = require('./receiver/htmlfile')
, XHRLocalObject = require('./sender/xhr-local')
, AjaxBasedTransport = require('./lib/ajax-based')
;
function HtmlFileTransport(transUrl) {
if (!HtmlfileReceiver.enabled) {
throw new Error('Transport created when disabled');
}
AjaxBasedTransport.call(this, transUrl, '/htmlfile', HtmlfileReceiver, XHRLocalObject);
}
inherits(HtmlFileTransport, AjaxBasedTransport);
HtmlFileTransport.enabled = function(info) {
return HtmlfileReceiver.enabled && info.sameOrigin;
};
HtmlFileTransport.transportName = 'htmlfile';
HtmlFileTransport.roundTrips = 2;
module.exports = HtmlFileTransport;

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node_modules/sockjs-client/lib/transport/iframe.js generated vendored Normal file
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'use strict';
// Few cool transports do work only for same-origin. In order to make
// them work cross-domain we shall use iframe, served from the
// remote domain. New browsers have capabilities to communicate with
// cross domain iframe using postMessage(). In IE it was implemented
// from IE 8+, but of course, IE got some details wrong:
// http://msdn.microsoft.com/en-us/library/cc197015(v=VS.85).aspx
// http://stevesouders.com/misc/test-postmessage.php
var inherits = require('inherits')
, EventEmitter = require('events').EventEmitter
, version = require('../version')
, urlUtils = require('../utils/url')
, iframeUtils = require('../utils/iframe')
, eventUtils = require('../utils/event')
, random = require('../utils/random')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:transport:iframe');
}
function IframeTransport(transport, transUrl, baseUrl) {
if (!IframeTransport.enabled()) {
throw new Error('Transport created when disabled');
}
EventEmitter.call(this);
var self = this;
this.origin = urlUtils.getOrigin(baseUrl);
this.baseUrl = baseUrl;
this.transUrl = transUrl;
this.transport = transport;
this.windowId = random.string(8);
var iframeUrl = urlUtils.addPath(baseUrl, '/iframe.html') + '#' + this.windowId;
debug(transport, transUrl, iframeUrl);
this.iframeObj = iframeUtils.createIframe(iframeUrl, function(r) {
debug('err callback');
self.emit('close', 1006, 'Unable to load an iframe (' + r + ')');
self.close();
});
this.onmessageCallback = this._message.bind(this);
eventUtils.attachEvent('message', this.onmessageCallback);
}
inherits(IframeTransport, EventEmitter);
IframeTransport.prototype.close = function() {
debug('close');
this.removeAllListeners();
if (this.iframeObj) {
eventUtils.detachEvent('message', this.onmessageCallback);
try {
// When the iframe is not loaded, IE raises an exception
// on 'contentWindow'.
this.postMessage('c');
} catch (x) {
// intentionally empty
}
this.iframeObj.cleanup();
this.iframeObj = null;
this.onmessageCallback = this.iframeObj = null;
}
};
IframeTransport.prototype._message = function(e) {
debug('message', e.data);
if (!urlUtils.isOriginEqual(e.origin, this.origin)) {
debug('not same origin', e.origin, this.origin);
return;
}
var iframeMessage;
try {
iframeMessage = JSON.parse(e.data);
} catch (ignored) {
debug('bad json', e.data);
return;
}
if (iframeMessage.windowId !== this.windowId) {
debug('mismatched window id', iframeMessage.windowId, this.windowId);
return;
}
switch (iframeMessage.type) {
case 's':
this.iframeObj.loaded();
// window global dependency
this.postMessage('s', JSON.stringify([
version
, this.transport
, this.transUrl
, this.baseUrl
]));
break;
case 't':
this.emit('message', iframeMessage.data);
break;
case 'c':
var cdata;
try {
cdata = JSON.parse(iframeMessage.data);
} catch (ignored) {
debug('bad json', iframeMessage.data);
return;
}
this.emit('close', cdata[0], cdata[1]);
this.close();
break;
}
};
IframeTransport.prototype.postMessage = function(type, data) {
debug('postMessage', type, data);
this.iframeObj.post(JSON.stringify({
windowId: this.windowId
, type: type
, data: data || ''
}), this.origin);
};
IframeTransport.prototype.send = function(message) {
debug('send', message);
this.postMessage('m', message);
};
IframeTransport.enabled = function() {
return iframeUtils.iframeEnabled;
};
IframeTransport.transportName = 'iframe';
IframeTransport.roundTrips = 2;
module.exports = IframeTransport;

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node_modules/sockjs-client/lib/transport/jsonp-polling.js generated vendored Normal file
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'use strict';
// The simplest and most robust transport, using the well-know cross
// domain hack - JSONP. This transport is quite inefficient - one
// message could use up to one http request. But at least it works almost
// everywhere.
// Known limitations:
// o you will get a spinning cursor
// o for Konqueror a dumb timer is needed to detect errors
var inherits = require('inherits')
, SenderReceiver = require('./lib/sender-receiver')
, JsonpReceiver = require('./receiver/jsonp')
, jsonpSender = require('./sender/jsonp')
;
function JsonPTransport(transUrl) {
if (!JsonPTransport.enabled()) {
throw new Error('Transport created when disabled');
}
SenderReceiver.call(this, transUrl, '/jsonp', jsonpSender, JsonpReceiver);
}
inherits(JsonPTransport, SenderReceiver);
JsonPTransport.enabled = function() {
return !!global.document;
};
JsonPTransport.transportName = 'jsonp-polling';
JsonPTransport.roundTrips = 1;
JsonPTransport.needBody = true;
module.exports = JsonPTransport;

49
node_modules/sockjs-client/lib/transport/lib/ajax-based.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, urlUtils = require('../../utils/url')
, SenderReceiver = require('./sender-receiver')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:ajax-based');
}
function createAjaxSender(AjaxObject) {
return function(url, payload, callback) {
debug('create ajax sender', url, payload);
var opt = {};
if (typeof payload === 'string') {
opt.headers = {'Content-type': 'text/plain'};
}
var ajaxUrl = urlUtils.addPath(url, '/xhr_send');
var xo = new AjaxObject('POST', ajaxUrl, payload, opt);
xo.once('finish', function(status) {
debug('finish', status);
xo = null;
if (status !== 200 && status !== 204) {
return callback(new Error('http status ' + status));
}
callback();
});
return function() {
debug('abort');
xo.close();
xo = null;
var err = new Error('Aborted');
err.code = 1000;
callback(err);
};
};
}
function AjaxBasedTransport(transUrl, urlSuffix, Receiver, AjaxObject) {
SenderReceiver.call(this, transUrl, urlSuffix, createAjaxSender(AjaxObject), Receiver, AjaxObject);
}
inherits(AjaxBasedTransport, SenderReceiver);
module.exports = AjaxBasedTransport;

87
node_modules/sockjs-client/lib/transport/lib/buffered-sender.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, EventEmitter = require('events').EventEmitter
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:buffered-sender');
}
function BufferedSender(url, sender) {
debug(url);
EventEmitter.call(this);
this.sendBuffer = [];
this.sender = sender;
this.url = url;
}
inherits(BufferedSender, EventEmitter);
BufferedSender.prototype.send = function(message) {
debug('send', message);
this.sendBuffer.push(message);
if (!this.sendStop) {
this.sendSchedule();
}
};
// For polling transports in a situation when in the message callback,
// new message is being send. If the sending connection was started
// before receiving one, it is possible to saturate the network and
// timeout due to the lack of receiving socket. To avoid that we delay
// sending messages by some small time, in order to let receiving
// connection be started beforehand. This is only a halfmeasure and
// does not fix the big problem, but it does make the tests go more
// stable on slow networks.
BufferedSender.prototype.sendScheduleWait = function() {
debug('sendScheduleWait');
var self = this;
var tref;
this.sendStop = function() {
debug('sendStop');
self.sendStop = null;
clearTimeout(tref);
};
tref = setTimeout(function() {
debug('timeout');
self.sendStop = null;
self.sendSchedule();
}, 25);
};
BufferedSender.prototype.sendSchedule = function() {
debug('sendSchedule', this.sendBuffer.length);
var self = this;
if (this.sendBuffer.length > 0) {
var payload = '[' + this.sendBuffer.join(',') + ']';
this.sendStop = this.sender(this.url, payload, function(err) {
self.sendStop = null;
if (err) {
debug('error', err);
self.emit('close', err.code || 1006, 'Sending error: ' + err);
self.close();
} else {
self.sendScheduleWait();
}
});
this.sendBuffer = [];
}
};
BufferedSender.prototype._cleanup = function() {
debug('_cleanup');
this.removeAllListeners();
};
BufferedSender.prototype.close = function() {
debug('close');
this._cleanup();
if (this.sendStop) {
this.sendStop();
this.sendStop = null;
}
};
module.exports = BufferedSender;

33
node_modules/sockjs-client/lib/transport/lib/iframe-wrap.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, IframeTransport = require('../iframe')
, objectUtils = require('../../utils/object')
;
module.exports = function(transport) {
function IframeWrapTransport(transUrl, baseUrl) {
IframeTransport.call(this, transport.transportName, transUrl, baseUrl);
}
inherits(IframeWrapTransport, IframeTransport);
IframeWrapTransport.enabled = function(url, info) {
if (!global.document) {
return false;
}
var iframeInfo = objectUtils.extend({}, info);
iframeInfo.sameOrigin = true;
return transport.enabled(iframeInfo) && IframeTransport.enabled();
};
IframeWrapTransport.transportName = 'iframe-' + transport.transportName;
IframeWrapTransport.needBody = true;
IframeWrapTransport.roundTrips = IframeTransport.roundTrips + transport.roundTrips - 1; // html, javascript (2) + transport - no CORS (1)
IframeWrapTransport.facadeTransport = transport;
return IframeWrapTransport;
};

57
node_modules/sockjs-client/lib/transport/lib/polling.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, EventEmitter = require('events').EventEmitter
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:polling');
}
function Polling(Receiver, receiveUrl, AjaxObject) {
debug(receiveUrl);
EventEmitter.call(this);
this.Receiver = Receiver;
this.receiveUrl = receiveUrl;
this.AjaxObject = AjaxObject;
this._scheduleReceiver();
}
inherits(Polling, EventEmitter);
Polling.prototype._scheduleReceiver = function() {
debug('_scheduleReceiver');
var self = this;
var poll = this.poll = new this.Receiver(this.receiveUrl, this.AjaxObject);
poll.on('message', function(msg) {
debug('message', msg);
self.emit('message', msg);
});
poll.once('close', function(code, reason) {
debug('close', code, reason, self.pollIsClosing);
self.poll = poll = null;
if (!self.pollIsClosing) {
if (reason === 'network') {
self._scheduleReceiver();
} else {
self.emit('close', code || 1006, reason);
self.removeAllListeners();
}
}
});
};
Polling.prototype.abort = function() {
debug('abort');
this.removeAllListeners();
this.pollIsClosing = true;
if (this.poll) {
this.poll.abort();
}
};
module.exports = Polling;

45
node_modules/sockjs-client/lib/transport/lib/sender-receiver.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, urlUtils = require('../../utils/url')
, BufferedSender = require('./buffered-sender')
, Polling = require('./polling')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:sender-receiver');
}
function SenderReceiver(transUrl, urlSuffix, senderFunc, Receiver, AjaxObject) {
var pollUrl = urlUtils.addPath(transUrl, urlSuffix);
debug(pollUrl);
var self = this;
BufferedSender.call(this, transUrl, senderFunc);
this.poll = new Polling(Receiver, pollUrl, AjaxObject);
this.poll.on('message', function(msg) {
debug('poll message', msg);
self.emit('message', msg);
});
this.poll.once('close', function(code, reason) {
debug('poll close', code, reason);
self.poll = null;
self.emit('close', code, reason);
self.close();
});
}
inherits(SenderReceiver, BufferedSender);
SenderReceiver.prototype.close = function() {
BufferedSender.prototype.close.call(this);
debug('close');
this.removeAllListeners();
if (this.poll) {
this.poll.abort();
this.poll = null;
}
};
module.exports = SenderReceiver;

63
node_modules/sockjs-client/lib/transport/receiver/eventsource.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, EventEmitter = require('events').EventEmitter
, EventSourceDriver = require('eventsource')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:receiver:eventsource');
}
function EventSourceReceiver(url) {
debug(url);
EventEmitter.call(this);
var self = this;
var es = this.es = new EventSourceDriver(url);
es.onmessage = function(e) {
debug('message', e.data);
self.emit('message', decodeURI(e.data));
};
es.onerror = function(e) {
debug('error', es.readyState, e);
// ES on reconnection has readyState = 0 or 1.
// on network error it's CLOSED = 2
var reason = (es.readyState !== 2 ? 'network' : 'permanent');
self._cleanup();
self._close(reason);
};
}
inherits(EventSourceReceiver, EventEmitter);
EventSourceReceiver.prototype.abort = function() {
debug('abort');
this._cleanup();
this._close('user');
};
EventSourceReceiver.prototype._cleanup = function() {
debug('cleanup');
var es = this.es;
if (es) {
es.onmessage = es.onerror = null;
es.close();
this.es = null;
}
};
EventSourceReceiver.prototype._close = function(reason) {
debug('close', reason);
var self = this;
// Safari and chrome < 15 crash if we close window before
// waiting for ES cleanup. See:
// https://code.google.com/p/chromium/issues/detail?id=89155
setTimeout(function() {
self.emit('close', null, reason);
self.removeAllListeners();
}, 200);
};
module.exports = EventSourceReceiver;

87
node_modules/sockjs-client/lib/transport/receiver/htmlfile.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, iframeUtils = require('../../utils/iframe')
, urlUtils = require('../../utils/url')
, EventEmitter = require('events').EventEmitter
, random = require('../../utils/random')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:receiver:htmlfile');
}
function HtmlfileReceiver(url) {
debug(url);
EventEmitter.call(this);
var self = this;
iframeUtils.polluteGlobalNamespace();
this.id = 'a' + random.string(6);
url = urlUtils.addQuery(url, 'c=' + decodeURIComponent(iframeUtils.WPrefix + '.' + this.id));
debug('using htmlfile', HtmlfileReceiver.htmlfileEnabled);
var constructFunc = HtmlfileReceiver.htmlfileEnabled ?
iframeUtils.createHtmlfile : iframeUtils.createIframe;
global[iframeUtils.WPrefix][this.id] = {
start: function() {
debug('start');
self.iframeObj.loaded();
}
, message: function(data) {
debug('message', data);
self.emit('message', data);
}
, stop: function() {
debug('stop');
self._cleanup();
self._close('network');
}
};
this.iframeObj = constructFunc(url, function() {
debug('callback');
self._cleanup();
self._close('permanent');
});
}
inherits(HtmlfileReceiver, EventEmitter);
HtmlfileReceiver.prototype.abort = function() {
debug('abort');
this._cleanup();
this._close('user');
};
HtmlfileReceiver.prototype._cleanup = function() {
debug('_cleanup');
if (this.iframeObj) {
this.iframeObj.cleanup();
this.iframeObj = null;
}
delete global[iframeUtils.WPrefix][this.id];
};
HtmlfileReceiver.prototype._close = function(reason) {
debug('_close', reason);
this.emit('close', null, reason);
this.removeAllListeners();
};
HtmlfileReceiver.htmlfileEnabled = false;
// obfuscate to avoid firewalls
var axo = ['Active'].concat('Object').join('X');
if (axo in global) {
try {
HtmlfileReceiver.htmlfileEnabled = !!new global[axo]('htmlfile');
} catch (x) {
// intentionally empty
}
}
HtmlfileReceiver.enabled = HtmlfileReceiver.htmlfileEnabled || iframeUtils.iframeEnabled;
module.exports = HtmlfileReceiver;

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node_modules/sockjs-client/lib/transport/receiver/jsonp.js generated vendored Normal file
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'use strict';
var utils = require('../../utils/iframe')
, random = require('../../utils/random')
, browser = require('../../utils/browser')
, urlUtils = require('../../utils/url')
, inherits = require('inherits')
, EventEmitter = require('events').EventEmitter
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:receiver:jsonp');
}
function JsonpReceiver(url) {
debug(url);
var self = this;
EventEmitter.call(this);
utils.polluteGlobalNamespace();
this.id = 'a' + random.string(6);
var urlWithId = urlUtils.addQuery(url, 'c=' + encodeURIComponent(utils.WPrefix + '.' + this.id));
global[utils.WPrefix][this.id] = this._callback.bind(this);
this._createScript(urlWithId);
// Fallback mostly for Konqueror - stupid timer, 35 seconds shall be plenty.
this.timeoutId = setTimeout(function() {
debug('timeout');
self._abort(new Error('JSONP script loaded abnormally (timeout)'));
}, JsonpReceiver.timeout);
}
inherits(JsonpReceiver, EventEmitter);
JsonpReceiver.prototype.abort = function() {
debug('abort');
if (global[utils.WPrefix][this.id]) {
var err = new Error('JSONP user aborted read');
err.code = 1000;
this._abort(err);
}
};
JsonpReceiver.timeout = 35000;
JsonpReceiver.scriptErrorTimeout = 1000;
JsonpReceiver.prototype._callback = function(data) {
debug('_callback', data);
this._cleanup();
if (this.aborting) {
return;
}
if (data) {
debug('message', data);
this.emit('message', data);
}
this.emit('close', null, 'network');
this.removeAllListeners();
};
JsonpReceiver.prototype._abort = function(err) {
debug('_abort', err);
this._cleanup();
this.aborting = true;
this.emit('close', err.code, err.message);
this.removeAllListeners();
};
JsonpReceiver.prototype._cleanup = function() {
debug('_cleanup');
clearTimeout(this.timeoutId);
if (this.script2) {
this.script2.parentNode.removeChild(this.script2);
this.script2 = null;
}
if (this.script) {
var script = this.script;
// Unfortunately, you can't really abort script loading of
// the script.
script.parentNode.removeChild(script);
script.onreadystatechange = script.onerror =
script.onload = script.onclick = null;
this.script = null;
}
delete global[utils.WPrefix][this.id];
};
JsonpReceiver.prototype._scriptError = function() {
debug('_scriptError');
var self = this;
if (this.errorTimer) {
return;
}
this.errorTimer = setTimeout(function() {
if (!self.loadedOkay) {
self._abort(new Error('JSONP script loaded abnormally (onerror)'));
}
}, JsonpReceiver.scriptErrorTimeout);
};
JsonpReceiver.prototype._createScript = function(url) {
debug('_createScript', url);
var self = this;
var script = this.script = global.document.createElement('script');
var script2; // Opera synchronous load trick.
script.id = 'a' + random.string(8);
script.src = url;
script.type = 'text/javascript';
script.charset = 'UTF-8';
script.onerror = this._scriptError.bind(this);
script.onload = function() {
debug('onload');
self._abort(new Error('JSONP script loaded abnormally (onload)'));
};
// IE9 fires 'error' event after onreadystatechange or before, in random order.
// Use loadedOkay to determine if actually errored
script.onreadystatechange = function() {
debug('onreadystatechange', script.readyState);
if (/loaded|closed/.test(script.readyState)) {
if (script && script.htmlFor && script.onclick) {
self.loadedOkay = true;
try {
// In IE, actually execute the script.
script.onclick();
} catch (x) {
// intentionally empty
}
}
if (script) {
self._abort(new Error('JSONP script loaded abnormally (onreadystatechange)'));
}
}
};
// IE: event/htmlFor/onclick trick.
// One can't rely on proper order for onreadystatechange. In order to
// make sure, set a 'htmlFor' and 'event' properties, so that
// script code will be installed as 'onclick' handler for the
// script object. Later, onreadystatechange, manually execute this
// code. FF and Chrome doesn't work with 'event' and 'htmlFor'
// set. For reference see:
// http://jaubourg.net/2010/07/loading-script-as-onclick-handler-of.html
// Also, read on that about script ordering:
// http://wiki.whatwg.org/wiki/Dynamic_Script_Execution_Order
if (typeof script.async === 'undefined' && global.document.attachEvent) {
// According to mozilla docs, in recent browsers script.async defaults
// to 'true', so we may use it to detect a good browser:
// https://developer.mozilla.org/en/HTML/Element/script
if (!browser.isOpera()) {
// Naively assume we're in IE
try {
script.htmlFor = script.id;
script.event = 'onclick';
} catch (x) {
// intentionally empty
}
script.async = true;
} else {
// Opera, second sync script hack
script2 = this.script2 = global.document.createElement('script');
script2.text = "try{var a = document.getElementById('" + script.id + "'); if(a)a.onerror();}catch(x){};";
script.async = script2.async = false;
}
}
if (typeof script.async !== 'undefined') {
script.async = true;
}
var head = global.document.getElementsByTagName('head')[0];
head.insertBefore(script, head.firstChild);
if (script2) {
head.insertBefore(script2, head.firstChild);
}
};
module.exports = JsonpReceiver;

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node_modules/sockjs-client/lib/transport/receiver/xhr.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, EventEmitter = require('events').EventEmitter
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:receiver:xhr');
}
function XhrReceiver(url, AjaxObject) {
debug(url);
EventEmitter.call(this);
var self = this;
this.bufferPosition = 0;
this.xo = new AjaxObject('POST', url, null);
this.xo.on('chunk', this._chunkHandler.bind(this));
this.xo.once('finish', function(status, text) {
debug('finish', status, text);
self._chunkHandler(status, text);
self.xo = null;
var reason = status === 200 ? 'network' : 'permanent';
debug('close', reason);
self.emit('close', null, reason);
self._cleanup();
});
}
inherits(XhrReceiver, EventEmitter);
XhrReceiver.prototype._chunkHandler = function(status, text) {
debug('_chunkHandler', status);
if (status !== 200 || !text) {
return;
}
for (var idx = -1; ; this.bufferPosition += idx + 1) {
var buf = text.slice(this.bufferPosition);
idx = buf.indexOf('\n');
if (idx === -1) {
break;
}
var msg = buf.slice(0, idx);
if (msg) {
debug('message', msg);
this.emit('message', msg);
}
}
};
XhrReceiver.prototype._cleanup = function() {
debug('_cleanup');
this.removeAllListeners();
};
XhrReceiver.prototype.abort = function() {
debug('abort');
if (this.xo) {
this.xo.close();
debug('close');
this.emit('close', null, 'user');
this.xo = null;
}
this._cleanup();
};
module.exports = XhrReceiver;

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node_modules/sockjs-client/lib/transport/sender/jsonp.js generated vendored Normal file
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'use strict';
var random = require('../../utils/random')
, urlUtils = require('../../utils/url')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:sender:jsonp');
}
var form, area;
function createIframe(id) {
debug('createIframe', id);
try {
// ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
return global.document.createElement('<iframe name="' + id + '">');
} catch (x) {
var iframe = global.document.createElement('iframe');
iframe.name = id;
return iframe;
}
}
function createForm() {
debug('createForm');
form = global.document.createElement('form');
form.style.display = 'none';
form.style.position = 'absolute';
form.method = 'POST';
form.enctype = 'application/x-www-form-urlencoded';
form.acceptCharset = 'UTF-8';
area = global.document.createElement('textarea');
area.name = 'd';
form.appendChild(area);
global.document.body.appendChild(form);
}
module.exports = function(url, payload, callback) {
debug(url, payload);
if (!form) {
createForm();
}
var id = 'a' + random.string(8);
form.target = id;
form.action = urlUtils.addQuery(urlUtils.addPath(url, '/jsonp_send'), 'i=' + id);
var iframe = createIframe(id);
iframe.id = id;
iframe.style.display = 'none';
form.appendChild(iframe);
try {
area.value = payload;
} catch (e) {
// seriously broken browsers get here
}
form.submit();
var completed = function(err) {
debug('completed', id, err);
if (!iframe.onerror) {
return;
}
iframe.onreadystatechange = iframe.onerror = iframe.onload = null;
// Opera mini doesn't like if we GC iframe
// immediately, thus this timeout.
setTimeout(function() {
debug('cleaning up', id);
iframe.parentNode.removeChild(iframe);
iframe = null;
}, 500);
area.value = '';
// It is not possible to detect if the iframe succeeded or
// failed to submit our form.
callback(err);
};
iframe.onerror = function() {
debug('onerror', id);
completed();
};
iframe.onload = function() {
debug('onload', id);
completed();
};
iframe.onreadystatechange = function(e) {
debug('onreadystatechange', id, iframe.readyState, e);
if (iframe.readyState === 'complete') {
completed();
}
};
return function() {
debug('aborted', id);
completed(new Error('Aborted'));
};
};

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node_modules/sockjs-client/lib/transport/sender/xdr.js generated vendored Normal file
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'use strict';
var EventEmitter = require('events').EventEmitter
, inherits = require('inherits')
, eventUtils = require('../../utils/event')
, browser = require('../../utils/browser')
, urlUtils = require('../../utils/url')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:sender:xdr');
}
// References:
// http://ajaxian.com/archives/100-line-ajax-wrapper
// http://msdn.microsoft.com/en-us/library/cc288060(v=VS.85).aspx
function XDRObject(method, url, payload) {
debug(method, url);
var self = this;
EventEmitter.call(this);
setTimeout(function() {
self._start(method, url, payload);
}, 0);
}
inherits(XDRObject, EventEmitter);
XDRObject.prototype._start = function(method, url, payload) {
debug('_start');
var self = this;
var xdr = new global.XDomainRequest();
// IE caches even POSTs
url = urlUtils.addQuery(url, 't=' + (+new Date()));
xdr.onerror = function() {
debug('onerror');
self._error();
};
xdr.ontimeout = function() {
debug('ontimeout');
self._error();
};
xdr.onprogress = function() {
debug('progress', xdr.responseText);
self.emit('chunk', 200, xdr.responseText);
};
xdr.onload = function() {
debug('load');
self.emit('finish', 200, xdr.responseText);
self._cleanup(false);
};
this.xdr = xdr;
this.unloadRef = eventUtils.unloadAdd(function() {
self._cleanup(true);
});
try {
// Fails with AccessDenied if port number is bogus
this.xdr.open(method, url);
if (this.timeout) {
this.xdr.timeout = this.timeout;
}
this.xdr.send(payload);
} catch (x) {
this._error();
}
};
XDRObject.prototype._error = function() {
this.emit('finish', 0, '');
this._cleanup(false);
};
XDRObject.prototype._cleanup = function(abort) {
debug('cleanup', abort);
if (!this.xdr) {
return;
}
this.removeAllListeners();
eventUtils.unloadDel(this.unloadRef);
this.xdr.ontimeout = this.xdr.onerror = this.xdr.onprogress = this.xdr.onload = null;
if (abort) {
try {
this.xdr.abort();
} catch (x) {
// intentionally empty
}
}
this.unloadRef = this.xdr = null;
};
XDRObject.prototype.close = function() {
debug('close');
this._cleanup(true);
};
// IE 8/9 if the request target uses the same scheme - #79
XDRObject.enabled = !!(global.XDomainRequest && browser.hasDomain());
module.exports = XDRObject;

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node_modules/sockjs-client/lib/transport/sender/xhr-cors.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, XhrDriver = require('../driver/xhr')
;
function XHRCorsObject(method, url, payload, opts) {
XhrDriver.call(this, method, url, payload, opts);
}
inherits(XHRCorsObject, XhrDriver);
XHRCorsObject.enabled = XhrDriver.enabled && XhrDriver.supportsCORS;
module.exports = XHRCorsObject;

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node_modules/sockjs-client/lib/transport/sender/xhr-fake.js generated vendored Normal file
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'use strict';
var EventEmitter = require('events').EventEmitter
, inherits = require('inherits')
;
function XHRFake(/* method, url, payload, opts */) {
var self = this;
EventEmitter.call(this);
this.to = setTimeout(function() {
self.emit('finish', 200, '{}');
}, XHRFake.timeout);
}
inherits(XHRFake, EventEmitter);
XHRFake.prototype.close = function() {
clearTimeout(this.to);
};
XHRFake.timeout = 2000;
module.exports = XHRFake;

17
node_modules/sockjs-client/lib/transport/sender/xhr-local.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, XhrDriver = require('../driver/xhr')
;
function XHRLocalObject(method, url, payload /*, opts */) {
XhrDriver.call(this, method, url, payload, {
noCredentials: true
});
}
inherits(XHRLocalObject, XhrDriver);
XHRLocalObject.enabled = XhrDriver.enabled;
module.exports = XHRLocalObject;

99
node_modules/sockjs-client/lib/transport/websocket.js generated vendored Normal file
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'use strict';
var utils = require('../utils/event')
, urlUtils = require('../utils/url')
, inherits = require('inherits')
, EventEmitter = require('events').EventEmitter
, WebsocketDriver = require('./driver/websocket')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:websocket');
}
function WebSocketTransport(transUrl, ignore, options) {
if (!WebSocketTransport.enabled()) {
throw new Error('Transport created when disabled');
}
EventEmitter.call(this);
debug('constructor', transUrl);
var self = this;
var url = urlUtils.addPath(transUrl, '/websocket');
if (url.slice(0, 5) === 'https') {
url = 'wss' + url.slice(5);
} else {
url = 'ws' + url.slice(4);
}
this.url = url;
this.ws = new WebsocketDriver(this.url, [], options);
this.ws.onmessage = function(e) {
debug('message event', e.data);
self.emit('message', e.data);
};
// Firefox has an interesting bug. If a websocket connection is
// created after onunload, it stays alive even when user
// navigates away from the page. In such situation let's lie -
// let's not open the ws connection at all. See:
// https://github.com/sockjs/sockjs-client/issues/28
// https://bugzilla.mozilla.org/show_bug.cgi?id=696085
this.unloadRef = utils.unloadAdd(function() {
debug('unload');
self.ws.close();
});
this.ws.onclose = function(e) {
debug('close event', e.code, e.reason);
self.emit('close', e.code, e.reason);
self._cleanup();
};
this.ws.onerror = function(e) {
debug('error event', e);
self.emit('close', 1006, 'WebSocket connection broken');
self._cleanup();
};
}
inherits(WebSocketTransport, EventEmitter);
WebSocketTransport.prototype.send = function(data) {
var msg = '[' + data + ']';
debug('send', msg);
this.ws.send(msg);
};
WebSocketTransport.prototype.close = function() {
debug('close');
var ws = this.ws;
this._cleanup();
if (ws) {
ws.close();
}
};
WebSocketTransport.prototype._cleanup = function() {
debug('_cleanup');
var ws = this.ws;
if (ws) {
ws.onmessage = ws.onclose = ws.onerror = null;
}
utils.unloadDel(this.unloadRef);
this.unloadRef = this.ws = null;
this.removeAllListeners();
};
WebSocketTransport.enabled = function() {
debug('enabled');
return !!WebsocketDriver;
};
WebSocketTransport.transportName = 'websocket';
// In theory, ws should require 1 round trip. But in chrome, this is
// not very stable over SSL. Most likely a ws connection requires a
// separate SSL connection, in which case 2 round trips are an
// absolute minumum.
WebSocketTransport.roundTrips = 2;
module.exports = WebSocketTransport;

23
node_modules/sockjs-client/lib/transport/xdr-polling.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, AjaxBasedTransport = require('./lib/ajax-based')
, XdrStreamingTransport = require('./xdr-streaming')
, XhrReceiver = require('./receiver/xhr')
, XDRObject = require('./sender/xdr')
;
function XdrPollingTransport(transUrl) {
if (!XDRObject.enabled) {
throw new Error('Transport created when disabled');
}
AjaxBasedTransport.call(this, transUrl, '/xhr', XhrReceiver, XDRObject);
}
inherits(XdrPollingTransport, AjaxBasedTransport);
XdrPollingTransport.enabled = XdrStreamingTransport.enabled;
XdrPollingTransport.transportName = 'xdr-polling';
XdrPollingTransport.roundTrips = 2; // preflight, ajax
module.exports = XdrPollingTransport;

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node_modules/sockjs-client/lib/transport/xdr-streaming.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, AjaxBasedTransport = require('./lib/ajax-based')
, XhrReceiver = require('./receiver/xhr')
, XDRObject = require('./sender/xdr')
;
// According to:
// http://stackoverflow.com/questions/1641507/detect-browser-support-for-cross-domain-xmlhttprequests
// http://hacks.mozilla.org/2009/07/cross-site-xmlhttprequest-with-cors/
function XdrStreamingTransport(transUrl) {
if (!XDRObject.enabled) {
throw new Error('Transport created when disabled');
}
AjaxBasedTransport.call(this, transUrl, '/xhr_streaming', XhrReceiver, XDRObject);
}
inherits(XdrStreamingTransport, AjaxBasedTransport);
XdrStreamingTransport.enabled = function(info) {
if (info.cookie_needed || info.nullOrigin) {
return false;
}
return XDRObject.enabled && info.sameScheme;
};
XdrStreamingTransport.transportName = 'xdr-streaming';
XdrStreamingTransport.roundTrips = 2; // preflight, ajax
module.exports = XdrStreamingTransport;

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node_modules/sockjs-client/lib/transport/xhr-polling.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, AjaxBasedTransport = require('./lib/ajax-based')
, XhrReceiver = require('./receiver/xhr')
, XHRCorsObject = require('./sender/xhr-cors')
, XHRLocalObject = require('./sender/xhr-local')
;
function XhrPollingTransport(transUrl) {
if (!XHRLocalObject.enabled && !XHRCorsObject.enabled) {
throw new Error('Transport created when disabled');
}
AjaxBasedTransport.call(this, transUrl, '/xhr', XhrReceiver, XHRCorsObject);
}
inherits(XhrPollingTransport, AjaxBasedTransport);
XhrPollingTransport.enabled = function(info) {
if (info.nullOrigin) {
return false;
}
if (XHRLocalObject.enabled && info.sameOrigin) {
return true;
}
return XHRCorsObject.enabled;
};
XhrPollingTransport.transportName = 'xhr-polling';
XhrPollingTransport.roundTrips = 2; // preflight, ajax
module.exports = XhrPollingTransport;

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node_modules/sockjs-client/lib/transport/xhr-streaming.js generated vendored Normal file
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'use strict';
var inherits = require('inherits')
, AjaxBasedTransport = require('./lib/ajax-based')
, XhrReceiver = require('./receiver/xhr')
, XHRCorsObject = require('./sender/xhr-cors')
, XHRLocalObject = require('./sender/xhr-local')
, browser = require('../utils/browser')
;
function XhrStreamingTransport(transUrl) {
if (!XHRLocalObject.enabled && !XHRCorsObject.enabled) {
throw new Error('Transport created when disabled');
}
AjaxBasedTransport.call(this, transUrl, '/xhr_streaming', XhrReceiver, XHRCorsObject);
}
inherits(XhrStreamingTransport, AjaxBasedTransport);
XhrStreamingTransport.enabled = function(info) {
if (info.nullOrigin) {
return false;
}
// Opera doesn't support xhr-streaming #60
// But it might be able to #92
if (browser.isOpera()) {
return false;
}
return XHRCorsObject.enabled;
};
XhrStreamingTransport.transportName = 'xhr-streaming';
XhrStreamingTransport.roundTrips = 2; // preflight, ajax
// Safari gets confused when a streaming ajax request is started
// before onload. This causes the load indicator to spin indefinetely.
// Only require body when used in a browser
XhrStreamingTransport.needBody = !!global.document;
module.exports = XhrStreamingTransport;

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node_modules/sockjs-client/lib/utils/browser-crypto.js generated vendored Normal file
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'use strict';
if (global.crypto && global.crypto.getRandomValues) {
module.exports.randomBytes = function(length) {
var bytes = new Uint8Array(length);
global.crypto.getRandomValues(bytes);
return bytes;
};
} else {
module.exports.randomBytes = function(length) {
var bytes = new Array(length);
for (var i = 0; i < length; i++) {
bytes[i] = Math.floor(Math.random() * 256);
}
return bytes;
};
}

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node_modules/sockjs-client/lib/utils/browser.js generated vendored Normal file
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'use strict';
module.exports = {
isOpera: function() {
return global.navigator &&
/opera/i.test(global.navigator.userAgent);
}
, isKonqueror: function() {
return global.navigator &&
/konqueror/i.test(global.navigator.userAgent);
}
// #187 wrap document.domain in try/catch because of WP8 from file:///
, hasDomain: function () {
// non-browser client always has a domain
if (!global.document) {
return true;
}
try {
return !!global.document.domain;
} catch (e) {
return false;
}
}
};

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node_modules/sockjs-client/lib/utils/escape.js generated vendored Normal file
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'use strict';
// Some extra characters that Chrome gets wrong, and substitutes with
// something else on the wire.
// eslint-disable-next-line no-control-regex, no-misleading-character-class
var extraEscapable = /[\x00-\x1f\ud800-\udfff\ufffe\uffff\u0300-\u0333\u033d-\u0346\u034a-\u034c\u0350-\u0352\u0357-\u0358\u035c-\u0362\u0374\u037e\u0387\u0591-\u05af\u05c4\u0610-\u0617\u0653-\u0654\u0657-\u065b\u065d-\u065e\u06df-\u06e2\u06eb-\u06ec\u0730\u0732-\u0733\u0735-\u0736\u073a\u073d\u073f-\u0741\u0743\u0745\u0747\u07eb-\u07f1\u0951\u0958-\u095f\u09dc-\u09dd\u09df\u0a33\u0a36\u0a59-\u0a5b\u0a5e\u0b5c-\u0b5d\u0e38-\u0e39\u0f43\u0f4d\u0f52\u0f57\u0f5c\u0f69\u0f72-\u0f76\u0f78\u0f80-\u0f83\u0f93\u0f9d\u0fa2\u0fa7\u0fac\u0fb9\u1939-\u193a\u1a17\u1b6b\u1cda-\u1cdb\u1dc0-\u1dcf\u1dfc\u1dfe\u1f71\u1f73\u1f75\u1f77\u1f79\u1f7b\u1f7d\u1fbb\u1fbe\u1fc9\u1fcb\u1fd3\u1fdb\u1fe3\u1feb\u1fee-\u1fef\u1ff9\u1ffb\u1ffd\u2000-\u2001\u20d0-\u20d1\u20d4-\u20d7\u20e7-\u20e9\u2126\u212a-\u212b\u2329-\u232a\u2adc\u302b-\u302c\uaab2-\uaab3\uf900-\ufa0d\ufa10\ufa12\ufa15-\ufa1e\ufa20\ufa22\ufa25-\ufa26\ufa2a-\ufa2d\ufa30-\ufa6d\ufa70-\ufad9\ufb1d\ufb1f\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40-\ufb41\ufb43-\ufb44\ufb46-\ufb4e\ufff0-\uffff]/g
, extraLookup;
// This may be quite slow, so let's delay until user actually uses bad
// characters.
var unrollLookup = function(escapable) {
var i;
var unrolled = {};
var c = [];
for (i = 0; i < 65536; i++) {
c.push( String.fromCharCode(i) );
}
escapable.lastIndex = 0;
c.join('').replace(escapable, function(a) {
unrolled[ a ] = '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
return '';
});
escapable.lastIndex = 0;
return unrolled;
};
// Quote string, also taking care of unicode characters that browsers
// often break. Especially, take care of unicode surrogates:
// http://en.wikipedia.org/wiki/Mapping_of_Unicode_characters#Surrogates
module.exports = {
quote: function(string) {
var quoted = JSON.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];
});
}
};

73
node_modules/sockjs-client/lib/utils/event.js generated vendored Normal file
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@ -0,0 +1,73 @@
'use strict';
var random = require('./random');
var onUnload = {}
, afterUnload = false
// detect google chrome packaged apps because they don't allow the 'unload' event
, isChromePackagedApp = global.chrome && global.chrome.app && global.chrome.app.runtime
;
module.exports = {
attachEvent: function(event, listener) {
if (typeof global.addEventListener !== 'undefined') {
global.addEventListener(event, listener, false);
} else if (global.document && global.attachEvent) {
// IE quirks.
// According to: http://stevesouders.com/misc/test-postmessage.php
// the message gets delivered only to 'document', not 'window'.
global.document.attachEvent('on' + event, listener);
// I get 'window' for ie8.
global.attachEvent('on' + event, listener);
}
}
, detachEvent: function(event, listener) {
if (typeof global.addEventListener !== 'undefined') {
global.removeEventListener(event, listener, false);
} else if (global.document && global.detachEvent) {
global.document.detachEvent('on' + event, listener);
global.detachEvent('on' + event, listener);
}
}
, unloadAdd: function(listener) {
if (isChromePackagedApp) {
return null;
}
var ref = random.string(8);
onUnload[ref] = listener;
if (afterUnload) {
setTimeout(this.triggerUnloadCallbacks, 0);
}
return ref;
}
, unloadDel: function(ref) {
if (ref in onUnload) {
delete onUnload[ref];
}
}
, triggerUnloadCallbacks: function() {
for (var ref in onUnload) {
onUnload[ref]();
delete onUnload[ref];
}
}
};
var unloadTriggered = function() {
if (afterUnload) {
return;
}
afterUnload = true;
module.exports.triggerUnloadCallbacks();
};
// 'unload' alone is not reliable in opera within an iframe, but we
// can't use `beforeunload` as IE fires it on javascript: links.
if (!isChromePackagedApp) {
module.exports.attachEvent('unload', unloadTriggered);
}

185
node_modules/sockjs-client/lib/utils/iframe.js generated vendored Normal file
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@ -0,0 +1,185 @@
'use strict';
var eventUtils = require('./event')
, browser = require('./browser')
;
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:utils:iframe');
}
module.exports = {
WPrefix: '_jp'
, currentWindowId: null
, polluteGlobalNamespace: function() {
if (!(module.exports.WPrefix in global)) {
global[module.exports.WPrefix] = {};
}
}
, postMessage: function(type, data) {
if (global.parent !== global) {
global.parent.postMessage(JSON.stringify({
windowId: module.exports.currentWindowId
, type: type
, data: data || ''
}), '*');
} else {
debug('Cannot postMessage, no parent window.', type, data);
}
}
, createIframe: function(iframeUrl, errorCallback) {
var iframe = global.document.createElement('iframe');
var tref, unloadRef;
var unattach = function() {
debug('unattach');
clearTimeout(tref);
// Explorer had problems with that.
try {
iframe.onload = null;
} catch (x) {
// intentionally empty
}
iframe.onerror = null;
};
var cleanup = function() {
debug('cleanup');
if (iframe) {
unattach();
// This timeout makes chrome fire onbeforeunload event
// within iframe. Without the timeout it goes straight to
// onunload.
setTimeout(function() {
if (iframe) {
iframe.parentNode.removeChild(iframe);
}
iframe = null;
}, 0);
eventUtils.unloadDel(unloadRef);
}
};
var onerror = function(err) {
debug('onerror', err);
if (iframe) {
cleanup();
errorCallback(err);
}
};
var post = function(msg, origin) {
debug('post', msg, origin);
setTimeout(function() {
try {
// When the iframe is not loaded, IE raises an exception
// on 'contentWindow'.
if (iframe && iframe.contentWindow) {
iframe.contentWindow.postMessage(msg, origin);
}
} catch (x) {
// intentionally empty
}
}, 0);
};
iframe.src = iframeUrl;
iframe.style.display = 'none';
iframe.style.position = 'absolute';
iframe.onerror = function() {
onerror('onerror');
};
iframe.onload = function() {
debug('onload');
// `onload` is triggered before scripts on the iframe are
// executed. Give it few seconds to actually load stuff.
clearTimeout(tref);
tref = setTimeout(function() {
onerror('onload timeout');
}, 2000);
};
global.document.body.appendChild(iframe);
tref = setTimeout(function() {
onerror('timeout');
}, 15000);
unloadRef = eventUtils.unloadAdd(cleanup);
return {
post: post
, cleanup: cleanup
, loaded: unattach
};
}
/* eslint no-undef: "off", new-cap: "off" */
, createHtmlfile: function(iframeUrl, errorCallback) {
var axo = ['Active'].concat('Object').join('X');
var doc = new global[axo]('htmlfile');
var tref, unloadRef;
var iframe;
var unattach = function() {
clearTimeout(tref);
iframe.onerror = null;
};
var cleanup = function() {
if (doc) {
unattach();
eventUtils.unloadDel(unloadRef);
iframe.parentNode.removeChild(iframe);
iframe = doc = null;
CollectGarbage();
}
};
var onerror = function(r) {
debug('onerror', r);
if (doc) {
cleanup();
errorCallback(r);
}
};
var post = function(msg, origin) {
try {
// When the iframe is not loaded, IE raises an exception
// on 'contentWindow'.
setTimeout(function() {
if (iframe && iframe.contentWindow) {
iframe.contentWindow.postMessage(msg, origin);
}
}, 0);
} catch (x) {
// intentionally empty
}
};
doc.open();
doc.write('<html><s' + 'cript>' +
'document.domain="' + global.document.domain + '";' +
'</s' + 'cript></html>');
doc.close();
doc.parentWindow[module.exports.WPrefix] = global[module.exports.WPrefix];
var c = doc.createElement('div');
doc.body.appendChild(c);
iframe = doc.createElement('iframe');
c.appendChild(iframe);
iframe.src = iframeUrl;
iframe.onerror = function() {
onerror('onerror');
};
tref = setTimeout(function() {
onerror('timeout');
}, 15000);
unloadRef = eventUtils.unloadAdd(cleanup);
return {
post: post
, cleanup: cleanup
, loaded: unattach
};
}
};
module.exports.iframeEnabled = false;
if (global.document) {
// postMessage misbehaves in konqueror 4.6.5 - the messages are delivered with
// huge delay, or not at all.
module.exports.iframeEnabled = (typeof global.postMessage === 'function' ||
typeof global.postMessage === 'object') && (!browser.isKonqueror());
}

18
node_modules/sockjs-client/lib/utils/log.js generated vendored Normal file
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@ -0,0 +1,18 @@
'use strict';
var logObject = {};
['log', 'debug', 'warn'].forEach(function (level) {
var levelExists;
try {
levelExists = global.console && global.console[level] && global.console[level].apply;
} catch(e) {
// do nothing
}
logObject[level] = levelExists ? function () {
return global.console[level].apply(global.console, arguments);
} : (level === 'log' ? function () {} : logObject.log);
});
module.exports = logObject;

24
node_modules/sockjs-client/lib/utils/object.js generated vendored Normal file
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@ -0,0 +1,24 @@
'use strict';
module.exports = {
isObject: function(obj) {
var type = typeof obj;
return type === 'function' || type === 'object' && !!obj;
}
, extend: function(obj) {
if (!this.isObject(obj)) {
return obj;
}
var source, prop;
for (var i = 1, length = arguments.length; i < length; i++) {
source = arguments[i];
for (prop in source) {
if (Object.prototype.hasOwnProperty.call(source, prop)) {
obj[prop] = source[prop];
}
}
}
return obj;
}
};

28
node_modules/sockjs-client/lib/utils/random.js generated vendored Normal file
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@ -0,0 +1,28 @@
'use strict';
var crypto = require('crypto');
// This string has length 32, a power of 2, so the modulus doesn't introduce a
// bias.
var _randomStringChars = 'abcdefghijklmnopqrstuvwxyz012345';
module.exports = {
string: function(length) {
var max = _randomStringChars.length;
var bytes = crypto.randomBytes(length);
var ret = [];
for (var i = 0; i < length; i++) {
ret.push(_randomStringChars.substr(bytes[i] % max, 1));
}
return ret.join('');
}
, number: function(max) {
return Math.floor(Math.random() * max);
}
, numberString: function(max) {
var t = ('' + (max - 1)).length;
var p = new Array(t + 1).join('0');
return (p + this.number(max)).slice(-t);
}
};

50
node_modules/sockjs-client/lib/utils/transport.js generated vendored Normal file
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@ -0,0 +1,50 @@
'use strict';
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:utils:transport');
}
module.exports = function(availableTransports) {
return {
filterToEnabled: function(transportsWhitelist, info) {
var transports = {
main: []
, facade: []
};
if (!transportsWhitelist) {
transportsWhitelist = [];
} else if (typeof transportsWhitelist === 'string') {
transportsWhitelist = [transportsWhitelist];
}
availableTransports.forEach(function(trans) {
if (!trans) {
return;
}
if (trans.transportName === 'websocket' && info.websocket === false) {
debug('disabled from server', 'websocket');
return;
}
if (transportsWhitelist.length &&
transportsWhitelist.indexOf(trans.transportName) === -1) {
debug('not in whitelist', trans.transportName);
return;
}
if (trans.enabled(info)) {
debug('enabled', trans.transportName);
transports.main.push(trans);
if (trans.facadeTransport) {
transports.facade.push(trans.facadeTransport);
}
} else {
debug('disabled', trans.transportName);
}
});
return transports;
}
};
};

51
node_modules/sockjs-client/lib/utils/url.js generated vendored Normal file
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@ -0,0 +1,51 @@
'use strict';
var URL = require('url-parse');
var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
debug = require('debug')('sockjs-client:utils:url');
}
module.exports = {
getOrigin: function(url) {
if (!url) {
return null;
}
var p = new URL(url);
if (p.protocol === 'file:') {
return null;
}
var port = p.port;
if (!port) {
port = (p.protocol === 'https:') ? '443' : '80';
}
return p.protocol + '//' + p.hostname + ':' + port;
}
, isOriginEqual: function(a, b) {
var res = this.getOrigin(a) === this.getOrigin(b);
debug('same', a, b, res);
return res;
}
, isSchemeEqual: function(a, b) {
return (a.split(':')[0] === b.split(':')[0]);
}
, addPath: function (url, path) {
var qs = url.split('?');
return qs[0] + path + (qs[1] ? '?' + qs[1] : '');
}
, addQuery: function (url, q) {
return url + (url.indexOf('?') === -1 ? ('?' + q) : ('&' + q));
}
, isLoopbackAddr: function (addr) {
return /^127\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/i.test(addr) || /^\[::1\]$/.test(addr);
}
};

1
node_modules/sockjs-client/lib/version.js generated vendored Normal file
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@ -0,0 +1 @@
module.exports = '1.6.1';

395
node_modules/sockjs-client/node_modules/debug/CHANGELOG.md generated vendored Normal file
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@ -0,0 +1,395 @@
3.1.0 / 2017-09-26
==================
* Add `DEBUG_HIDE_DATE` env var (#486)
* Remove ReDoS regexp in %o formatter (#504)
* Remove "component" from package.json
* Remove `component.json`
* Ignore package-lock.json
* Examples: fix colors printout
* Fix: browser detection
* Fix: spelling mistake (#496, @EdwardBetts)
3.0.1 / 2017-08-24
==================
* Fix: Disable colors in Edge and Internet Explorer (#489)
3.0.0 / 2017-08-08
==================
* Breaking: Remove DEBUG_FD (#406)
* Breaking: Use `Date#toISOString()` instead to `Date#toUTCString()` when output is not a TTY (#418)
* Breaking: Make millisecond timer namespace specific and allow 'always enabled' output (#408)
* Addition: document `enabled` flag (#465)
* Addition: add 256 colors mode (#481)
* Addition: `enabled()` updates existing debug instances, add `destroy()` function (#440)
* Update: component: update "ms" to v2.0.0
* Update: separate the Node and Browser tests in Travis-CI
* Update: refactor Readme, fixed documentation, added "Namespace Colors" section, redid screenshots
* Update: separate Node.js and web browser examples for organization
* Update: update "browserify" to v14.4.0
* Fix: fix Readme typo (#473)
2.6.9 / 2017-09-22
==================
* remove ReDoS regexp in %o formatter (#504)
2.6.8 / 2017-05-18
==================
* Fix: Check for undefined on browser globals (#462, @marbemac)
2.6.7 / 2017-05-16
==================
* Fix: Update ms to 2.0.0 to fix regular expression denial of service vulnerability (#458, @hubdotcom)
* Fix: Inline extend function in node implementation (#452, @dougwilson)
* Docs: Fix typo (#455, @msasad)
2.6.5 / 2017-04-27
==================
* Fix: null reference check on window.documentElement.style.WebkitAppearance (#447, @thebigredgeek)
* Misc: clean up browser reference checks (#447, @thebigredgeek)
* Misc: add npm-debug.log to .gitignore (@thebigredgeek)
2.6.4 / 2017-04-20
==================
* Fix: bug that would occur if process.env.DEBUG is a non-string value. (#444, @LucianBuzzo)
* Chore: ignore bower.json in npm installations. (#437, @joaovieira)
* Misc: update "ms" to v0.7.3 (@tootallnate)
2.6.3 / 2017-03-13
==================
* Fix: Electron reference to `process.env.DEBUG` (#431, @paulcbetts)
* Docs: Changelog fix (@thebigredgeek)
2.6.2 / 2017-03-10
==================
* Fix: DEBUG_MAX_ARRAY_LENGTH (#420, @slavaGanzin)
* Docs: Add backers and sponsors from Open Collective (#422, @piamancini)
* Docs: Add Slackin invite badge (@tootallnate)
2.6.1 / 2017-02-10
==================
* Fix: Module's `export default` syntax fix for IE8 `Expected identifier` error
* Fix: Whitelist DEBUG_FD for values 1 and 2 only (#415, @pi0)
* Fix: IE8 "Expected identifier" error (#414, @vgoma)
* Fix: Namespaces would not disable once enabled (#409, @musikov)
2.6.0 / 2016-12-28
==================
* Fix: added better null pointer checks for browser useColors (@thebigredgeek)
* Improvement: removed explicit `window.debug` export (#404, @tootallnate)
* Improvement: deprecated `DEBUG_FD` environment variable (#405, @tootallnate)
2.5.2 / 2016-12-25
==================
* Fix: reference error on window within webworkers (#393, @KlausTrainer)
* Docs: fixed README typo (#391, @lurch)
* Docs: added notice about v3 api discussion (@thebigredgeek)
2.5.1 / 2016-12-20
==================
* Fix: babel-core compatibility
2.5.0 / 2016-12-20
==================
* Fix: wrong reference in bower file (@thebigredgeek)
* Fix: webworker compatibility (@thebigredgeek)
* Fix: output formatting issue (#388, @kribblo)
* Fix: babel-loader compatibility (#383, @escwald)
* Misc: removed built asset from repo and publications (@thebigredgeek)
* Misc: moved source files to /src (#378, @yamikuronue)
* Test: added karma integration and replaced babel with browserify for browser tests (#378, @yamikuronue)
* Test: coveralls integration (#378, @yamikuronue)
* Docs: simplified language in the opening paragraph (#373, @yamikuronue)
2.4.5 / 2016-12-17
==================
* Fix: `navigator` undefined in Rhino (#376, @jochenberger)
* Fix: custom log function (#379, @hsiliev)
* Improvement: bit of cleanup + linting fixes (@thebigredgeek)
* Improvement: rm non-maintainted `dist/` dir (#375, @freewil)
* Docs: simplified language in the opening paragraph. (#373, @yamikuronue)
2.4.4 / 2016-12-14
==================
* Fix: work around debug being loaded in preload scripts for electron (#368, @paulcbetts)
2.4.3 / 2016-12-14
==================
* Fix: navigation.userAgent error for react native (#364, @escwald)
2.4.2 / 2016-12-14
==================
* Fix: browser colors (#367, @tootallnate)
* Misc: travis ci integration (@thebigredgeek)
* Misc: added linting and testing boilerplate with sanity check (@thebigredgeek)
2.4.1 / 2016-12-13
==================
* Fix: typo that broke the package (#356)
2.4.0 / 2016-12-13
==================
* Fix: bower.json references unbuilt src entry point (#342, @justmatt)
* Fix: revert "handle regex special characters" (@tootallnate)
* Feature: configurable util.inspect()`options for NodeJS (#327, @tootallnate)
* Feature: %O`(big O) pretty-prints objects (#322, @tootallnate)
* Improvement: allow colors in workers (#335, @botverse)
* Improvement: use same color for same namespace. (#338, @lchenay)
2.3.3 / 2016-11-09
==================
* Fix: Catch `JSON.stringify()` errors (#195, Jovan Alleyne)
* Fix: Returning `localStorage` saved values (#331, Levi Thomason)
* Improvement: Don't create an empty object when no `process` (Nathan Rajlich)
2.3.2 / 2016-11-09
==================
* Fix: be super-safe in index.js as well (@TooTallNate)
* Fix: should check whether process exists (Tom Newby)
2.3.1 / 2016-11-09
==================
* Fix: Added electron compatibility (#324, @paulcbetts)
* Improvement: Added performance optimizations (@tootallnate)
* Readme: Corrected PowerShell environment variable example (#252, @gimre)
* Misc: Removed yarn lock file from source control (#321, @fengmk2)
2.3.0 / 2016-11-07
==================
* Fix: Consistent placement of ms diff at end of output (#215, @gorangajic)
* Fix: Escaping of regex special characters in namespace strings (#250, @zacronos)
* Fix: Fixed bug causing crash on react-native (#282, @vkarpov15)
* Feature: Enabled ES6+ compatible import via default export (#212 @bucaran)
* Feature: Added %O formatter to reflect Chrome's console.log capability (#279, @oncletom)
* Package: Update "ms" to 0.7.2 (#315, @DevSide)
* Package: removed superfluous version property from bower.json (#207 @kkirsche)
* Readme: fix USE_COLORS to DEBUG_COLORS
* Readme: Doc fixes for format string sugar (#269, @mlucool)
* Readme: Updated docs for DEBUG_FD and DEBUG_COLORS environment variables (#232, @mattlyons0)
* Readme: doc fixes for PowerShell (#271 #243, @exoticknight @unreadable)
* Readme: better docs for browser support (#224, @matthewmueller)
* Tooling: Added yarn integration for development (#317, @thebigredgeek)
* Misc: Renamed History.md to CHANGELOG.md (@thebigredgeek)
* Misc: Added license file (#226 #274, @CantemoInternal @sdaitzman)
* Misc: Updated contributors (@thebigredgeek)
2.2.0 / 2015-05-09
==================
* package: update "ms" to v0.7.1 (#202, @dougwilson)
* README: add logging to file example (#193, @DanielOchoa)
* README: fixed a typo (#191, @amir-s)
* browser: expose `storage` (#190, @stephenmathieson)
* Makefile: add a `distclean` target (#189, @stephenmathieson)
2.1.3 / 2015-03-13
==================
* Updated stdout/stderr example (#186)
* Updated example/stdout.js to match debug current behaviour
* Renamed example/stderr.js to stdout.js
* Update Readme.md (#184)
* replace high intensity foreground color for bold (#182, #183)
2.1.2 / 2015-03-01
==================
* dist: recompile
* update "ms" to v0.7.0
* package: update "browserify" to v9.0.3
* component: fix "ms.js" repo location
* changed bower package name
* updated documentation about using debug in a browser
* fix: security error on safari (#167, #168, @yields)
2.1.1 / 2014-12-29
==================
* browser: use `typeof` to check for `console` existence
* browser: check for `console.log` truthiness (fix IE 8/9)
* browser: add support for Chrome apps
* Readme: added Windows usage remarks
* Add `bower.json` to properly support bower install
2.1.0 / 2014-10-15
==================
* node: implement `DEBUG_FD` env variable support
* package: update "browserify" to v6.1.0
* package: add "license" field to package.json (#135, @panuhorsmalahti)
2.0.0 / 2014-09-01
==================
* package: update "browserify" to v5.11.0
* node: use stderr rather than stdout for logging (#29, @stephenmathieson)
1.0.4 / 2014-07-15
==================
* dist: recompile
* example: remove `console.info()` log usage
* example: add "Content-Type" UTF-8 header to browser example
* browser: place %c marker after the space character
* browser: reset the "content" color via `color: inherit`
* browser: add colors support for Firefox >= v31
* debug: prefer an instance `log()` function over the global one (#119)
* Readme: update documentation about styled console logs for FF v31 (#116, @wryk)
1.0.3 / 2014-07-09
==================
* Add support for multiple wildcards in namespaces (#122, @seegno)
* browser: fix lint
1.0.2 / 2014-06-10
==================
* browser: update color palette (#113, @gscottolson)
* common: make console logging function configurable (#108, @timoxley)
* node: fix %o colors on old node <= 0.8.x
* Makefile: find node path using shell/which (#109, @timoxley)
1.0.1 / 2014-06-06
==================
* browser: use `removeItem()` to clear localStorage
* browser, node: don't set DEBUG if namespaces is undefined (#107, @leedm777)
* package: add "contributors" section
* node: fix comment typo
* README: list authors
1.0.0 / 2014-06-04
==================
* make ms diff be global, not be scope
* debug: ignore empty strings in enable()
* node: make DEBUG_COLORS able to disable coloring
* *: export the `colors` array
* npmignore: don't publish the `dist` dir
* Makefile: refactor to use browserify
* package: add "browserify" as a dev dependency
* Readme: add Web Inspector Colors section
* node: reset terminal color for the debug content
* node: map "%o" to `util.inspect()`
* browser: map "%j" to `JSON.stringify()`
* debug: add custom "formatters"
* debug: use "ms" module for humanizing the diff
* Readme: add "bash" syntax highlighting
* browser: add Firebug color support
* browser: add colors for WebKit browsers
* node: apply log to `console`
* rewrite: abstract common logic for Node & browsers
* add .jshintrc file
0.8.1 / 2014-04-14
==================
* package: re-add the "component" section
0.8.0 / 2014-03-30
==================
* add `enable()` method for nodejs. Closes #27
* change from stderr to stdout
* remove unnecessary index.js file
0.7.4 / 2013-11-13
==================
* remove "browserify" key from package.json (fixes something in browserify)
0.7.3 / 2013-10-30
==================
* fix: catch localStorage security error when cookies are blocked (Chrome)
* add debug(err) support. Closes #46
* add .browser prop to package.json. Closes #42
0.7.2 / 2013-02-06
==================
* fix package.json
* fix: Mobile Safari (private mode) is broken with debug
* fix: Use unicode to send escape character to shell instead of octal to work with strict mode javascript
0.7.1 / 2013-02-05
==================
* add repository URL to package.json
* add DEBUG_COLORED to force colored output
* add browserify support
* fix component. Closes #24
0.7.0 / 2012-05-04
==================
* Added .component to package.json
* Added debug.component.js build
0.6.0 / 2012-03-16
==================
* Added support for "-" prefix in DEBUG [Vinay Pulim]
* Added `.enabled` flag to the node version [TooTallNate]
0.5.0 / 2012-02-02
==================
* Added: humanize diffs. Closes #8
* Added `debug.disable()` to the CS variant
* Removed padding. Closes #10
* Fixed: persist client-side variant again. Closes #9
0.4.0 / 2012-02-01
==================
* Added browser variant support for older browsers [TooTallNate]
* Added `debug.enable('project:*')` to browser variant [TooTallNate]
* Added padding to diff (moved it to the right)
0.3.0 / 2012-01-26
==================
* Added millisecond diff when isatty, otherwise UTC string
0.2.0 / 2012-01-22
==================
* Added wildcard support
0.1.0 / 2011-12-02
==================
* Added: remove colors unless stderr isatty [TooTallNate]
0.0.1 / 2010-01-03
==================
* Initial release

19
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(The MIT License)
Copyright (c) 2014 TJ Holowaychuk <tj@vision-media.ca>
Permission is hereby granted, free of charge, to any person obtaining a copy of this software
and associated documentation files (the 'Software'), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial
portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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# debug
[![Build Status](https://travis-ci.org/visionmedia/debug.svg?branch=master)](https://travis-ci.org/visionmedia/debug) [![Coverage Status](https://coveralls.io/repos/github/visionmedia/debug/badge.svg?branch=master)](https://coveralls.io/github/visionmedia/debug?branch=master) [![Slack](https://visionmedia-community-slackin.now.sh/badge.svg)](https://visionmedia-community-slackin.now.sh/) [![OpenCollective](https://opencollective.com/debug/backers/badge.svg)](#backers)
[![OpenCollective](https://opencollective.com/debug/sponsors/badge.svg)](#sponsors)
<img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png">
A tiny JavaScript debugging utility modelled after Node.js core's debugging
technique. Works in Node.js and web browsers.
## Installation
```bash
$ npm install debug
```
## Usage
`debug` exposes a function; simply pass this function the name of your module, and it will return a decorated version of `console.error` for you to pass debug statements to. This will allow you to toggle the debug output for different parts of your module as well as the module as a whole.
Example [_app.js_](./examples/node/app.js):
```js
var debug = require('debug')('http')
, http = require('http')
, name = 'My App';
// fake app
debug('booting %o', name);
http.createServer(function(req, res){
debug(req.method + ' ' + req.url);
res.end('hello\n');
}).listen(3000, function(){
debug('listening');
});
// fake worker of some kind
require('./worker');
```
Example [_worker.js_](./examples/node/worker.js):
```js
var a = require('debug')('worker:a')
, b = require('debug')('worker:b');
function work() {
a('doing lots of uninteresting work');
setTimeout(work, Math.random() * 1000);
}
work();
function workb() {
b('doing some work');
setTimeout(workb, Math.random() * 2000);
}
workb();
```
The `DEBUG` environment variable is then used to enable these based on space or
comma-delimited names.
Here are some examples:
<img width="647" alt="screen shot 2017-08-08 at 12 53 04 pm" src="https://user-images.githubusercontent.com/71256/29091703-a6302cdc-7c38-11e7-8304-7c0b3bc600cd.png">
<img width="647" alt="screen shot 2017-08-08 at 12 53 38 pm" src="https://user-images.githubusercontent.com/71256/29091700-a62a6888-7c38-11e7-800b-db911291ca2b.png">
<img width="647" alt="screen shot 2017-08-08 at 12 53 25 pm" src="https://user-images.githubusercontent.com/71256/29091701-a62ea114-7c38-11e7-826a-2692bedca740.png">
#### Windows command prompt notes
##### CMD
On Windows the environment variable is set using the `set` command.
```cmd
set DEBUG=*,-not_this
```
Example:
```cmd
set DEBUG=* & node app.js
```
##### PowerShell (VS Code default)
PowerShell uses different syntax to set environment variables.
```cmd
$env:DEBUG = "*,-not_this"
```
Example:
```cmd
$env:DEBUG='app';node app.js
```
Then, run the program to be debugged as usual.
npm script example:
```js
"windowsDebug": "@powershell -Command $env:DEBUG='*';node app.js",
```
## Namespace Colors
Every debug instance has a color generated for it based on its namespace name.
This helps when visually parsing the debug output to identify which debug instance
a debug line belongs to.
#### Node.js
In Node.js, colors are enabled when stderr is a TTY. You also _should_ install
the [`supports-color`](https://npmjs.org/supports-color) module alongside debug,
otherwise debug will only use a small handful of basic colors.
<img width="521" src="https://user-images.githubusercontent.com/71256/29092181-47f6a9e6-7c3a-11e7-9a14-1928d8a711cd.png">
#### Web Browser
Colors are also enabled on "Web Inspectors" that understand the `%c` formatting
option. These are WebKit web inspectors, Firefox ([since version
31](https://hacks.mozilla.org/2014/05/editable-box-model-multiple-selection-sublime-text-keys-much-more-firefox-developer-tools-episode-31/))
and the Firebug plugin for Firefox (any version).
<img width="524" src="https://user-images.githubusercontent.com/71256/29092033-b65f9f2e-7c39-11e7-8e32-f6f0d8e865c1.png">
## Millisecond diff
When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls.
<img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png">
When stdout is not a TTY, `Date#toISOString()` is used, making it more useful for logging the debug information as shown below:
<img width="647" src="https://user-images.githubusercontent.com/71256/29091956-6bd78372-7c39-11e7-8c55-c948396d6edd.png">
## Conventions
If you're using this in one or more of your libraries, you _should_ use the name of your library so that developers may toggle debugging as desired without guessing names. If you have more than one debuggers you _should_ prefix them with your library name and use ":" to separate features. For example "bodyParser" from Connect would then be "connect:bodyParser". If you append a "*" to the end of your name, it will always be enabled regardless of the setting of the DEBUG environment variable. You can then use it for normal output as well as debug output.
## Wildcards
The `*` character may be used as a wildcard. Suppose for example your library has
debuggers named "connect:bodyParser", "connect:compress", "connect:session",
instead of listing all three with
`DEBUG=connect:bodyParser,connect:compress,connect:session`, you may simply do
`DEBUG=connect:*`, or to run everything using this module simply use `DEBUG=*`.
You can also exclude specific debuggers by prefixing them with a "-" character.
For example, `DEBUG=*,-connect:*` would include all debuggers except those
starting with "connect:".
## Environment Variables
When running through Node.js, you can set a few environment variables that will
change the behavior of the debug logging:
| Name | Purpose |
|-----------|-------------------------------------------------|
| `DEBUG` | Enables/disables specific debugging namespaces. |
| `DEBUG_HIDE_DATE` | Hide date from debug output (non-TTY). |
| `DEBUG_COLORS`| Whether or not to use colors in the debug output. |
| `DEBUG_DEPTH` | Object inspection depth. |
| `DEBUG_SHOW_HIDDEN` | Shows hidden properties on inspected objects. |
__Note:__ The environment variables beginning with `DEBUG_` end up being
converted into an Options object that gets used with `%o`/`%O` formatters.
See the Node.js documentation for
[`util.inspect()`](https://nodejs.org/api/util.html#util_util_inspect_object_options)
for the complete list.
## Formatters
Debug uses [printf-style](https://wikipedia.org/wiki/Printf_format_string) formatting.
Below are the officially supported formatters:
| Formatter | Representation |
|-----------|----------------|
| `%O` | Pretty-print an Object on multiple lines. |
| `%o` | Pretty-print an Object all on a single line. |
| `%s` | String. |
| `%d` | Number (both integer and float). |
| `%j` | JSON. Replaced with the string '[Circular]' if the argument contains circular references. |
| `%%` | Single percent sign ('%'). This does not consume an argument. |
### Custom formatters
You can add custom formatters by extending the `debug.formatters` object.
For example, if you wanted to add support for rendering a Buffer as hex with
`%h`, you could do something like:
```js
const createDebug = require('debug')
createDebug.formatters.h = (v) => {
return v.toString('hex')
}
// …elsewhere
const debug = createDebug('foo')
debug('this is hex: %h', new Buffer('hello world'))
// foo this is hex: 68656c6c6f20776f726c6421 +0ms
```
## Browser Support
You can build a browser-ready script using [browserify](https://github.com/substack/node-browserify),
or just use the [browserify-as-a-service](https://wzrd.in/) [build](https://wzrd.in/standalone/debug@latest),
if you don't want to build it yourself.
Debug's enable state is currently persisted by `localStorage`.
Consider the situation shown below where you have `worker:a` and `worker:b`,
and wish to debug both. You can enable this using `localStorage.debug`:
```js
localStorage.debug = 'worker:*'
```
And then refresh the page.
```js
a = debug('worker:a');
b = debug('worker:b');
setInterval(function(){
a('doing some work');
}, 1000);
setInterval(function(){
b('doing some work');
}, 1200);
```
## Output streams
By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method:
Example [_stdout.js_](./examples/node/stdout.js):
```js
var debug = require('debug');
var error = debug('app:error');
// by default stderr is used
error('goes to stderr!');
var log = debug('app:log');
// set this namespace to log via console.log
log.log = console.log.bind(console); // don't forget to bind to console!
log('goes to stdout');
error('still goes to stderr!');
// set all output to go via console.info
// overrides all per-namespace log settings
debug.log = console.info.bind(console);
error('now goes to stdout via console.info');
log('still goes to stdout, but via console.info now');
```
## Extend
You can simply extend debugger
```js
const log = require('debug')('auth');
//creates new debug instance with extended namespace
const logSign = log.extend('sign');
const logLogin = log.extend('login');
log('hello'); // auth hello
logSign('hello'); //auth:sign hello
logLogin('hello'); //auth:login hello
```
## Set dynamically
You can also enable debug dynamically by calling the `enable()` method :
```js
let debug = require('debug');
console.log(1, debug.enabled('test'));
debug.enable('test');
console.log(2, debug.enabled('test'));
debug.disable();
console.log(3, debug.enabled('test'));
```
print :
```
1 false
2 true
3 false
```
Usage :
`enable(namespaces)`
`namespaces` can include modes separated by a colon and wildcards.
Note that calling `enable()` completely overrides previously set DEBUG variable :
```
$ DEBUG=foo node -e 'var dbg = require("debug"); dbg.enable("bar"); console.log(dbg.enabled("foo"))'
=> false
```
## Checking whether a debug target is enabled
After you've created a debug instance, you can determine whether or not it is
enabled by checking the `enabled` property:
```javascript
const debug = require('debug')('http');
if (debug.enabled) {
// do stuff...
}
```
You can also manually toggle this property to force the debug instance to be
enabled or disabled.
## Authors
- TJ Holowaychuk
- Nathan Rajlich
- Andrew Rhyne
## Backers
Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/debug#backer)]
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## Sponsors
Become a sponsor and get your logo on our README on Github with a link to your site. [[Become a sponsor](https://opencollective.com/debug#sponsor)]
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## License
(The MIT License)
Copyright (c) 2014-2017 TJ Holowaychuk &lt;tj@vision-media.ca&gt;
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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module.exports = require('./src/node');

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{
"name": "debug",
"version": "3.2.7",
"repository": {
"type": "git",
"url": "git://github.com/visionmedia/debug.git"
},
"description": "small debugging utility",
"keywords": [
"debug",
"log",
"debugger"
],
"files": [
"src",
"node.js",
"dist/debug.js",
"LICENSE",
"README.md"
],
"author": "TJ Holowaychuk <tj@vision-media.ca>",
"contributors": [
"Nathan Rajlich <nathan@tootallnate.net> (http://n8.io)",
"Andrew Rhyne <rhyneandrew@gmail.com>"
],
"license": "MIT",
"dependencies": {
"ms": "^2.1.1"
},
"devDependencies": {
"@babel/cli": "^7.0.0",
"@babel/core": "^7.0.0",
"@babel/preset-env": "^7.0.0",
"browserify": "14.4.0",
"chai": "^3.5.0",
"concurrently": "^3.1.0",
"coveralls": "^3.0.2",
"istanbul": "^0.4.5",
"karma": "^3.0.0",
"karma-chai": "^0.1.0",
"karma-mocha": "^1.3.0",
"karma-phantomjs-launcher": "^1.0.2",
"mocha": "^5.2.0",
"mocha-lcov-reporter": "^1.2.0",
"rimraf": "^2.5.4",
"xo": "^0.23.0"
},
"main": "./src/index.js",
"browser": "./src/browser.js",
"unpkg": "./dist/debug.js"
}

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"use strict";
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
/* eslint-env browser */
/**
* This is the web browser implementation of `debug()`.
*/
exports.log = log;
exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
exports.storage = localstorage();
/**
* Colors.
*/
exports.colors = ['#0000CC', '#0000FF', '#0033CC', '#0033FF', '#0066CC', '#0066FF', '#0099CC', '#0099FF', '#00CC00', '#00CC33', '#00CC66', '#00CC99', '#00CCCC', '#00CCFF', '#3300CC', '#3300FF', '#3333CC', '#3333FF', '#3366CC', '#3366FF', '#3399CC', '#3399FF', '#33CC00', '#33CC33', '#33CC66', '#33CC99', '#33CCCC', '#33CCFF', '#6600CC', '#6600FF', '#6633CC', '#6633FF', '#66CC00', '#66CC33', '#9900CC', '#9900FF', '#9933CC', '#9933FF', '#99CC00', '#99CC33', '#CC0000', '#CC0033', '#CC0066', '#CC0099', '#CC00CC', '#CC00FF', '#CC3300', '#CC3333', '#CC3366', '#CC3399', '#CC33CC', '#CC33FF', '#CC6600', '#CC6633', '#CC9900', '#CC9933', '#CCCC00', '#CCCC33', '#FF0000', '#FF0033', '#FF0066', '#FF0099', '#FF00CC', '#FF00FF', '#FF3300', '#FF3333', '#FF3366', '#FF3399', '#FF33CC', '#FF33FF', '#FF6600', '#FF6633', '#FF9900', '#FF9933', '#FFCC00', '#FFCC33'];
/**
* Currently only WebKit-based Web Inspectors, Firefox >= v31,
* and the Firebug extension (any Firefox version) are known
* to support "%c" CSS customizations.
*
* TODO: add a `localStorage` variable to explicitly enable/disable colors
*/
// eslint-disable-next-line complexity
function useColors() {
// NB: In an Electron preload script, document will be defined but not fully
// initialized. Since we know we're in Chrome, we'll just detect this case
// explicitly
if (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {
return true;
} // Internet Explorer and Edge do not support colors.
if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
return false;
} // Is webkit? http://stackoverflow.com/a/16459606/376773
// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632
return typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance || // Is firebug? http://stackoverflow.com/a/398120/376773
typeof window !== 'undefined' && window.console && (window.console.firebug || window.console.exception && window.console.table) || // Is firefox >= v31?
// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31 || // Double check webkit in userAgent just in case we are in a worker
typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/);
}
/**
* Colorize log arguments if enabled.
*
* @api public
*/
function formatArgs(args) {
args[0] = (this.useColors ? '%c' : '') + this.namespace + (this.useColors ? ' %c' : ' ') + args[0] + (this.useColors ? '%c ' : ' ') + '+' + module.exports.humanize(this.diff);
if (!this.useColors) {
return;
}
var c = 'color: ' + this.color;
args.splice(1, 0, c, 'color: inherit'); // The final "%c" is somewhat tricky, because there could be other
// arguments passed either before or after the %c, so we need to
// figure out the correct index to insert the CSS into
var index = 0;
var lastC = 0;
args[0].replace(/%[a-zA-Z%]/g, function (match) {
if (match === '%%') {
return;
}
index++;
if (match === '%c') {
// We only are interested in the *last* %c
// (the user may have provided their own)
lastC = index;
}
});
args.splice(lastC, 0, c);
}
/**
* Invokes `console.log()` when available.
* No-op when `console.log` is not a "function".
*
* @api public
*/
function log() {
var _console;
// This hackery is required for IE8/9, where
// the `console.log` function doesn't have 'apply'
return (typeof console === "undefined" ? "undefined" : _typeof(console)) === 'object' && console.log && (_console = console).log.apply(_console, arguments);
}
/**
* Save `namespaces`.
*
* @param {String} namespaces
* @api private
*/
function save(namespaces) {
try {
if (namespaces) {
exports.storage.setItem('debug', namespaces);
} else {
exports.storage.removeItem('debug');
}
} catch (error) {// Swallow
// XXX (@Qix-) should we be logging these?
}
}
/**
* Load `namespaces`.
*
* @return {String} returns the previously persisted debug modes
* @api private
*/
function load() {
var r;
try {
r = exports.storage.getItem('debug');
} catch (error) {} // Swallow
// XXX (@Qix-) should we be logging these?
// If debug isn't set in LS, and we're in Electron, try to load $DEBUG
if (!r && typeof process !== 'undefined' && 'env' in process) {
r = process.env.DEBUG;
}
return r;
}
/**
* Localstorage attempts to return the localstorage.
*
* This is necessary because safari throws
* when a user disables cookies/localstorage
* and you attempt to access it.
*
* @return {LocalStorage}
* @api private
*/
function localstorage() {
try {
// TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context
// The Browser also has localStorage in the global context.
return localStorage;
} catch (error) {// Swallow
// XXX (@Qix-) should we be logging these?
}
}
module.exports = require('./common')(exports);
var formatters = module.exports.formatters;
/**
* Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
*/
formatters.j = function (v) {
try {
return JSON.stringify(v);
} catch (error) {
return '[UnexpectedJSONParseError]: ' + error.message;
}
};

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"use strict";
/**
* This is the common logic for both the Node.js and web browser
* implementations of `debug()`.
*/
function setup(env) {
createDebug.debug = createDebug;
createDebug.default = createDebug;
createDebug.coerce = coerce;
createDebug.disable = disable;
createDebug.enable = enable;
createDebug.enabled = enabled;
createDebug.humanize = require('ms');
Object.keys(env).forEach(function (key) {
createDebug[key] = env[key];
});
/**
* Active `debug` instances.
*/
createDebug.instances = [];
/**
* The currently active debug mode names, and names to skip.
*/
createDebug.names = [];
createDebug.skips = [];
/**
* Map of special "%n" handling functions, for the debug "format" argument.
*
* Valid key names are a single, lower or upper-case letter, i.e. "n" and "N".
*/
createDebug.formatters = {};
/**
* Selects a color for a debug namespace
* @param {String} namespace The namespace string for the for the debug instance to be colored
* @return {Number|String} An ANSI color code for the given namespace
* @api private
*/
function selectColor(namespace) {
var hash = 0;
for (var i = 0; i < namespace.length; i++) {
hash = (hash << 5) - hash + namespace.charCodeAt(i);
hash |= 0; // Convert to 32bit integer
}
return createDebug.colors[Math.abs(hash) % createDebug.colors.length];
}
createDebug.selectColor = selectColor;
/**
* Create a debugger with the given `namespace`.
*
* @param {String} namespace
* @return {Function}
* @api public
*/
function createDebug(namespace) {
var prevTime;
function debug() {
// Disabled?
if (!debug.enabled) {
return;
}
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
var self = debug; // Set `diff` timestamp
var curr = Number(new Date());
var ms = curr - (prevTime || curr);
self.diff = ms;
self.prev = prevTime;
self.curr = curr;
prevTime = curr;
args[0] = createDebug.coerce(args[0]);
if (typeof args[0] !== 'string') {
// Anything else let's inspect with %O
args.unshift('%O');
} // Apply any `formatters` transformations
var index = 0;
args[0] = args[0].replace(/%([a-zA-Z%])/g, function (match, format) {
// If we encounter an escaped % then don't increase the array index
if (match === '%%') {
return match;
}
index++;
var formatter = createDebug.formatters[format];
if (typeof formatter === 'function') {
var val = args[index];
match = formatter.call(self, val); // Now we need to remove `args[index]` since it's inlined in the `format`
args.splice(index, 1);
index--;
}
return match;
}); // Apply env-specific formatting (colors, etc.)
createDebug.formatArgs.call(self, args);
var logFn = self.log || createDebug.log;
logFn.apply(self, args);
}
debug.namespace = namespace;
debug.enabled = createDebug.enabled(namespace);
debug.useColors = createDebug.useColors();
debug.color = selectColor(namespace);
debug.destroy = destroy;
debug.extend = extend; // Debug.formatArgs = formatArgs;
// debug.rawLog = rawLog;
// env-specific initialization logic for debug instances
if (typeof createDebug.init === 'function') {
createDebug.init(debug);
}
createDebug.instances.push(debug);
return debug;
}
function destroy() {
var index = createDebug.instances.indexOf(this);
if (index !== -1) {
createDebug.instances.splice(index, 1);
return true;
}
return false;
}
function extend(namespace, delimiter) {
return createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);
}
/**
* Enables a debug mode by namespaces. This can include modes
* separated by a colon and wildcards.
*
* @param {String} namespaces
* @api public
*/
function enable(namespaces) {
createDebug.save(namespaces);
createDebug.names = [];
createDebug.skips = [];
var i;
var split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
var len = split.length;
for (i = 0; i < len; i++) {
if (!split[i]) {
// ignore empty strings
continue;
}
namespaces = split[i].replace(/\*/g, '.*?');
if (namespaces[0] === '-') {
createDebug.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
} else {
createDebug.names.push(new RegExp('^' + namespaces + '$'));
}
}
for (i = 0; i < createDebug.instances.length; i++) {
var instance = createDebug.instances[i];
instance.enabled = createDebug.enabled(instance.namespace);
}
}
/**
* Disable debug output.
*
* @api public
*/
function disable() {
createDebug.enable('');
}
/**
* Returns true if the given mode name is enabled, false otherwise.
*
* @param {String} name
* @return {Boolean}
* @api public
*/
function enabled(name) {
if (name[name.length - 1] === '*') {
return true;
}
var i;
var len;
for (i = 0, len = createDebug.skips.length; i < len; i++) {
if (createDebug.skips[i].test(name)) {
return false;
}
}
for (i = 0, len = createDebug.names.length; i < len; i++) {
if (createDebug.names[i].test(name)) {
return true;
}
}
return false;
}
/**
* Coerce `val`.
*
* @param {Mixed} val
* @return {Mixed}
* @api private
*/
function coerce(val) {
if (val instanceof Error) {
return val.stack || val.message;
}
return val;
}
createDebug.enable(createDebug.load());
return createDebug;
}
module.exports = setup;

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"use strict";
/**
* Detect Electron renderer / nwjs process, which is node, but we should
* treat as a browser.
*/
if (typeof process === 'undefined' || process.type === 'renderer' || process.browser === true || process.__nwjs) {
module.exports = require('./browser.js');
} else {
module.exports = require('./node.js');
}

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"use strict";
/**
* Module dependencies.
*/
var tty = require('tty');
var util = require('util');
/**
* This is the Node.js implementation of `debug()`.
*/
exports.init = init;
exports.log = log;
exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
/**
* Colors.
*/
exports.colors = [6, 2, 3, 4, 5, 1];
try {
// Optional dependency (as in, doesn't need to be installed, NOT like optionalDependencies in package.json)
// eslint-disable-next-line import/no-extraneous-dependencies
var supportsColor = require('supports-color');
if (supportsColor && (supportsColor.stderr || supportsColor).level >= 2) {
exports.colors = [20, 21, 26, 27, 32, 33, 38, 39, 40, 41, 42, 43, 44, 45, 56, 57, 62, 63, 68, 69, 74, 75, 76, 77, 78, 79, 80, 81, 92, 93, 98, 99, 112, 113, 128, 129, 134, 135, 148, 149, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 178, 179, 184, 185, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 214, 215, 220, 221];
}
} catch (error) {} // Swallow - we only care if `supports-color` is available; it doesn't have to be.
/**
* Build up the default `inspectOpts` object from the environment variables.
*
* $ DEBUG_COLORS=no DEBUG_DEPTH=10 DEBUG_SHOW_HIDDEN=enabled node script.js
*/
exports.inspectOpts = Object.keys(process.env).filter(function (key) {
return /^debug_/i.test(key);
}).reduce(function (obj, key) {
// Camel-case
var prop = key.substring(6).toLowerCase().replace(/_([a-z])/g, function (_, k) {
return k.toUpperCase();
}); // Coerce string value into JS value
var val = process.env[key];
if (/^(yes|on|true|enabled)$/i.test(val)) {
val = true;
} else if (/^(no|off|false|disabled)$/i.test(val)) {
val = false;
} else if (val === 'null') {
val = null;
} else {
val = Number(val);
}
obj[prop] = val;
return obj;
}, {});
/**
* Is stdout a TTY? Colored output is enabled when `true`.
*/
function useColors() {
return 'colors' in exports.inspectOpts ? Boolean(exports.inspectOpts.colors) : tty.isatty(process.stderr.fd);
}
/**
* Adds ANSI color escape codes if enabled.
*
* @api public
*/
function formatArgs(args) {
var name = this.namespace,
useColors = this.useColors;
if (useColors) {
var c = this.color;
var colorCode = "\x1B[3" + (c < 8 ? c : '8;5;' + c);
var prefix = " ".concat(colorCode, ";1m").concat(name, " \x1B[0m");
args[0] = prefix + args[0].split('\n').join('\n' + prefix);
args.push(colorCode + 'm+' + module.exports.humanize(this.diff) + "\x1B[0m");
} else {
args[0] = getDate() + name + ' ' + args[0];
}
}
function getDate() {
if (exports.inspectOpts.hideDate) {
return '';
}
return new Date().toISOString() + ' ';
}
/**
* Invokes `util.format()` with the specified arguments and writes to stderr.
*/
function log() {
return process.stderr.write(util.format.apply(util, arguments) + '\n');
}
/**
* Save `namespaces`.
*
* @param {String} namespaces
* @api private
*/
function save(namespaces) {
if (namespaces) {
process.env.DEBUG = namespaces;
} else {
// If you set a process.env field to null or undefined, it gets cast to the
// string 'null' or 'undefined'. Just delete instead.
delete process.env.DEBUG;
}
}
/**
* Load `namespaces`.
*
* @return {String} returns the previously persisted debug modes
* @api private
*/
function load() {
return process.env.DEBUG;
}
/**
* Init logic for `debug` instances.
*
* Create a new `inspectOpts` object in case `useColors` is set
* differently for a particular `debug` instance.
*/
function init(debug) {
debug.inspectOpts = {};
var keys = Object.keys(exports.inspectOpts);
for (var i = 0; i < keys.length; i++) {
debug.inspectOpts[keys[i]] = exports.inspectOpts[keys[i]];
}
}
module.exports = require('./common')(exports);
var formatters = module.exports.formatters;
/**
* Map %o to `util.inspect()`, all on a single line.
*/
formatters.o = function (v) {
this.inspectOpts.colors = this.useColors;
return util.inspect(v, this.inspectOpts)
.split('\n')
.map(function (str) { return str.trim(); })
.join(' ');
};
/**
* Map %O to `util.inspect()`, allowing multiple lines if needed.
*/
formatters.O = function (v) {
this.inspectOpts.colors = this.useColors;
return util.inspect(v, this.inspectOpts);
};

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{
"name": "sockjs-client",
"description": "SockJS-client is a browser JavaScript library that provides a WebSocket-like object.",
"version": "1.6.1",
"author": "Bryce Kahle",
"jsdelivr": "dist/sockjs.min.js",
"engines": {
"node": ">=12"
},
"funding": "https://tidelift.com/funding/github/npm/sockjs-client",
"browser": {
"./lib/transport/driver/websocket.js": "./lib/transport/browser/websocket.js",
"eventsource": "./lib/transport/browser/eventsource.js",
"./lib/transport/driver/xhr.js": "./lib/transport/browser/abstract-xhr.js",
"crypto": "./lib/utils/browser-crypto.js",
"events": "./lib/event/emitter.js"
},
"bugs": {
"url": "https://github.com/sockjs/sockjs-client/issues"
},
"contributors": [
{
"name": "Bryce Kahle",
"email": "bkahle@gmail.com"
},
{
"name": "Marek Majkowski",
"email": "deadbeef@popcount.org"
}
],
"dependencies": {
"debug": "^3.2.7",
"eventsource": "^2.0.2",
"faye-websocket": "^0.11.4",
"inherits": "^2.0.4",
"url-parse": "^1.5.10"
},
"devDependencies": {
"browserify": "^17.0.0",
"envify": "^4.0.0",
"eslint": "^8.10.0",
"expect.js": "~0.3.1",
"gulp": "^4.0.2",
"gulp-header": "^2.0.9",
"gulp-rename": "^2.0.0",
"gulp-replace": "^1.1.3",
"gulp-sourcemaps": "^3.0.0",
"gulp-uglify": "^3.0.2",
"karma": "^6.3.16",
"karma-browserify": "^8.1.0",
"karma-browserstack-launcher": "^1.6.0",
"karma-chrome-launcher": "^3.1.0",
"karma-mocha": "^2.0.1",
"mocha": "^9.2.1",
"proxyquire": "^2.1.3",
"pump": "^3.0.0",
"serve-static": "^1.14.2",
"sockjs": "^0.3.24",
"vinyl-buffer": "~1.0.0",
"vinyl-source-stream": "^2.0.0"
},
"homepage": "http://sockjs.org",
"keywords": [
"websockets",
"websocket"
],
"license": "MIT",
"main": "./lib/entry.js",
"repository": {
"type": "git",
"url": "https://github.com/sockjs/sockjs-client.git"
},
"scripts": {
"test": "mocha tests/node.js",
"test:bundle": "gulp testbundle",
"test:browser_local": "npm run test:bundle && npx karma start --browsers Chrome",
"test:browser_remote": "npm run test:bundle && npx karma start",
"gulp": "gulp",
"lint": "eslint .",
"version": "gulp release && git add -A dist lib/version.js Changelog.md",
"postversion": "npm publish",
"postpublish": "git push origin --all && git push origin --tags"
}
}