AG-42158, AG-45017, AG-51868 Improve set-cookie scriptlets — add 'all', 'mandatory' and 'declined' to predefined constants. #501, #518, #552

Squashed commit of the following:

commit 5168fc0
Author: Adam Wróblewski <adam@adguard.com>
Date:   Fri Mar 13 16:07:43 2026 +0100

    Add `all`, `mandatory` and `declined` as new values for `set-cookie` and `set-cookie-reload`

Author: AdamWr

CHANGELOG.md

@@ -14,6 +14,9 @@ The format is based on [Keep a Changelog], and this project adheres to [Semantic
 
 ### Added
 
+- New value to `set-cookie` and `set-cookie-reload` scriptlets: `all` [#501].
+- New value to `set-cookie` and `set-cookie-reload` scriptlets: `mandatory` [#518].
+- New value to `set-cookie` and `set-cookie-reload` scriptlets: `declined` [#552].
 - `trusted-json-set`, `trusted-json-set-fetch-response`
   and `trusted-json-set-xhr-response` scriptlets [#308].
 - `freewheel-admanager` redirect resource and scriptlet [#401].
@@ -38,10 +41,13 @@ The format is based on [Keep a Changelog], and this project adheres to [Semantic
 [Unreleased]: https://github.com/AdguardTeam/Scriptlets/compare/v2.2.16...HEAD
 [#308]: https://github.com/AdguardTeam/Scriptlets/issues/308
 [#401]: https://github.com/AdguardTeam/Scriptlets/issues/401
+[#501]: https://github.com/AdguardTeam/Scriptlets/issues/501
 [#513]: https://github.com/AdguardTeam/Scriptlets/issues/513
 [#515]: https://github.com/AdguardTeam/Scriptlets/issues/515
+[#518]: https://github.com/AdguardTeam/Scriptlets/issues/518
 [#545]: https://github.com/AdguardTeam/Scriptlets/issues/545
 [#549]: https://github.com/AdguardTeam/Scriptlets/issues/549
+[#552]: https://github.com/AdguardTeam/Scriptlets/issues/552
 
 ## [v2.2.16] - 2026-02-19
 

src/helpers/cookie-utils.ts

@@ -134,6 +134,9 @@ export const getLimitedCookieValue = (value: string): string | number | null =>
         'unchecked',
         'forbidden',
         'forever',
+        'declined',
+        'mandatory',
+        'all',
     ]);
 
     let validValue;

src/scriptlets/set-cookie-reload.js

@@ -33,12 +33,15 @@ import {
  *         - `no` / `n`
  *         - `ok`
  *         - `on` / `off`
+ *         - `all`
  *         - `accept`/ `accepted` / `notaccepted`
  *         - `reject` / `rejected`
  *         - `allow` / `allowed`
+ *         - `declined`
  *         - `disallow` / `deny` / `denied`
  *         - `enable` / `enabled`
  *         - `disable` / `disabled`
+ *         - `mandatory`
  *         - `necessary` / `required`
  *         - `hide` / `hidden`
  *         - `essential` / `nonessential`

src/scriptlets/set-cookie.js

@@ -35,12 +35,15 @@ import {
  *         - `no` / `n`
  *         - `ok`
  *         - `on` / `off`
+ *         - `all`
  *         - `accept`/ `accepted` / `notaccepted`
  *         - `reject` / `rejected`
  *         - `allow` / `allowed`
+ *         - `declined`
  *         - `disallow` / `deny` / `denied`
  *         - `enable` / `enabled`
  *         - `disable` / `disabled`
+ *         - `mandatory`
  *         - `necessary` / `required`
  *         - `hide` / `hidden`
  *         - `essential` / `nonessential`

tests/scriptlets/set-cookie.test.js

@@ -73,6 +73,9 @@ const cookies = [
     ['__test-cookie_forever', 'forever'],
     ['__test-cookie_emptyArray', 'emptyArr'],
     ['__test-cookie_emptyObject', 'emptyObj'],
+    ['__test-cookie_all', 'all'],
+    ['__test-cookie_mandatory', 'mandatory'],
+    ['__test-cookie_declined', 'declined'],
 ];
 
 test.each('Set cookie with valid value', cookies, (assert, [cName, cValue]) => {