fix: Add LICENSE-3RD-PARTY.txt file (#4304)

Axe-core needs to include the copyright and licenses of third-party
software.

I also looked at preserving the copyright statements from third-party
libraries where they are embedded. Unfortunately that will require us
addressing the webpack issue due to which we pinned our ESBuild version.
#4305

---------

Co-authored-by: Dan Bjorge <dan.bjorge@deque.com>

LICENSE-3RD-PARTY.txt

@@ -0,0 +1,66 @@
+-----------------------------------------------------------------------------
+                              MIT License
+  Applies to: 
+  - colorjs.io; Copyright (c) 2021 Lea Verou, Chris Lilley
+  - core-js-pure; Copyright (c) 2014-2023 Denis Pushkarev
+  - css-selector-parser; Copyright (c) 2013 Dulin Marat
+  - doT.js; Copyright (c) 2011 Laura Doktorova
+      Software includes portions from jQote2 Copyright (c) 2010 aefxx,
+      http://aefxx.com/ licensed under the MIT license.
+  - emoji-regex; Copyright (c) Mathias Bynens <https://mathiasbynens.be/>
+  - es6-iterator; Copyright (c) 2013-2017 Mariusz Nowak (www.medikoo.com)
+  - es6-promise;
+      Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors
+  - event-emitter; Copyright (C) 2012-2015 Mariusz Nowak (www.medikoo.com)
+  - is-promise; Copyright (c) 2014 Forbes Lindesay
+  - lru-queue; Copyright (C) 2014 Mariusz Nowak (www.medikoo.com)
+  - typedarray;
+      Copyright (c) 2010, Linden Research, Inc.
+      Copyright (c) 2012, Joshua Bell
+  - weakmap-polyfill; Copyright (c) 2015-2021 polygonplanet
+-----------------------------------------------------------------------------
+
+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.
+
+
+-----------------------------------------------------------------------------
+                              ISC License
+  Applies to: 
+  - d; Copyright (c) 2013-2019, Mariusz Nowak, @medikoo, medikoo.com
+  - es5-ext; Copyright (c) 2011-2022, Mariusz Nowak, @medikoo, medikoo.com
+  - es6-symbol; Copyright (c) 2013-2019, Mariusz Nowak, @medikoo, medikoo.com
+  - es6-weak-map; Copyright (c) 2013-2018, Mariusz Nowak, @medikoo, medikoo.com
+  - ext; Copyright (c) 2011-2022, Mariusz Nowak, @medikoo, medikoo.com
+  - memoizee; Copyright (c) 2012-2018, Mariusz Nowak, @medikoo, medikoo.com
+  - next-tick; Copyright (c) 2012-2020, Mariusz Nowak, @medikoo, medikoo.com
+  - timers-ext; Copyright (c) 2013-2018, Mariusz Nowak, @medikoo, medikoo.com
+  - type; Copyright (c) 2019, Mariusz Nowak, @medikoo, medikoo.com
+-----------------------------------------------------------------------------
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.

README.md

@@ -179,6 +179,8 @@ Read the [documentation on contributing](CONTRIBUTING.md)
 
 ## Acknowledgements
 
-Thanks to Marat Dulin for his [css-selector-parser](https://www.npmjs.com/package/css-selector-parser) implementation which is included for shadow DOM support.
+Thanks to Marat Dulin for his [css-selector-parser](https://www.npmjs.com/package/css-selector-parser) implementation which is included for shadow DOM support. Another thank you to the [Slick Parser](https://github.com/mootools/slick/blob/master/Source/Slick.Parser.js) implementers for their contribution, we have used some of their algorithms in our shadow DOM support code. Thanks to Lea Verou and Chris Lilley for their [colorjs.io](https://colorjs.io/) library which we have used for converting between color formats.
 
-Thanks to the [Slick Parser](https://github.com/mootools/slick/blob/master/Source/Slick.Parser.js) implementers for their contribution, we have used some of their algorithms in our shadow DOM support code.
+## Licenses
+
+Axe-core is distributed under the [Mozilla Public License, version 2.0](LICENSE). It comes bundled with several dependencies which are distributed under their own terms. (See [LICENSE-3RD-PARTY.txt](LICENSE-3RD-PARTY.txt))

package.json

@@ -55,7 +55,8 @@
     "axe.min.js",
     "axe.d.ts",
     "sri-history.json",
-    "locales/"
+    "locales/",
+    "LICENSE-3RD-PARTY.txt"
   ],
   "standard-version": {
     "scripts": {