AG-41163 Add support for NOT_VALIDATE hint

Squashed commit of the following:

commit a682008
Author: Adam Wróblewski <adam@adguard.com>
Date:   Mon Mar 31 12:24:25 2025 +0200

    Update changelog

commit 517626b
Author: Adam Wróblewski <adam@adguard.com>
Date:   Mon Mar 31 12:00:35 2025 +0200

    Add support for NOT_VALIDATE hint

Author: AdamWr

CHANGELOG.md

@@ -8,6 +8,15 @@ The format is based on [Keep a Changelog][keepachangelog], and this project adhe
 [keepachangelog]: https://keepachangelog.com/en/1.0.0/
 [semver]: https://semver.org/spec/v2.0.0.html
 
+## [2.1.4] - 2025-03-31
+
+### Added
+
+- Support for `!+ NOT_VALIDATE` hint [#248].
+
+[2.1.4]: https://github.com/AdguardTeam/AGLint/compare/v2.1.3...v2.1.4
+[#248]: https://github.com/AdguardTeam/AGLint/issues/248
+
 ## [2.1.3] - 2024-12-19
 
 ## Added

src/linter/rules/unknown-hints-and-platforms.ts

@@ -6,12 +6,14 @@ import { SEVERITY } from '../severity';
 const NOT_OPTIMIZED = 'NOT_OPTIMIZED';
 const PLATFORM = 'PLATFORM';
 const NOT_PLATFORM = 'NOT_PLATFORM';
+const NOT_VALIDATE = 'NOT_VALIDATE';
 
 // https://adguard.com/kb/general/ad-filtering/create-own-filters/#hints
 const KNOWN_HINTS = new Set([
     NOT_OPTIMIZED,
     PLATFORM,
     NOT_PLATFORM,
+    NOT_VALIDATE,
 ]);
 
 // https://adguard.com/kb/general/ad-filtering/create-own-filters/#platform-and-not_platform-hints
@@ -71,7 +73,7 @@ export const UnknownHintsAndPlatforms: LinterRule = {
                                 }
                             }
                         }
-                    } else if (hint.name.value === NOT_OPTIMIZED) {
+                    } else if (hint.name.value === NOT_OPTIMIZED || hint.name.value === NOT_VALIDATE) {
                         // If the hint has any parameters, it's invalid, including "NOT_OPTIMIZED()"
                         if (hint.params) {
                             context.report({

test/linter/rules/unknown-hints-and-platforms.test.ts

@@ -14,6 +14,9 @@ describe('unknown-hints-and-platforms', () => {
         // NOT_OPTIMIZED
         expect(linter.lint('!+ NOT_OPTIMIZED')).toMatchObject({ problems: [] });
 
+        // NOT_VALIDATE
+        expect(linter.lint('!+ NOT_VALIDATE')).toMatchObject({ problems: [] });
+
         // PLATFORM single
         expect(linter.lint('!+ PLATFORM(windows)')).toMatchObject({ problems: [] });
         expect(linter.lint('!+ PLATFORM(mac)')).toMatchObject({ problems: [] });
@@ -135,6 +138,81 @@ describe('unknown-hints-and-platforms', () => {
             ],
         });
 
+        // syntax error
+        expect(linter.lint('!+ NOT_VALIDATE(')).toMatchObject({
+            problems: [
+                {
+                    severity: 3,
+                    // eslint-disable-next-line max-len
+                    message: 'Cannot parse adblock rule due to the following error: Missing closing parenthesis for hint "NOT_VALIDATE"',
+                    position: {
+                        startColumn: 3,
+                        endColumn: 16,
+                    },
+                },
+            ],
+        });
+
+        // NOT_VALIDATE should not have parameters
+        expect(linter.lint('!+ NOT_VALIDATE()')).toMatchObject({
+            problems: [
+                {
+                    rule: 'unknown-hints-and-platforms',
+                    severity: 2,
+                    message: 'Hint "NOT_VALIDATE" must not have any parameters',
+                    position: {
+                        startColumn: 3,
+                        endColumn: 17,
+                    },
+                },
+            ],
+        });
+
+        // NOT_VALIDATE should not have parameters
+        expect(linter.lint('!+ NOT_VALIDATE(aa)')).toMatchObject({
+            problems: [
+                {
+                    rule: 'unknown-hints-and-platforms',
+                    severity: 2,
+                    message: 'Hint "NOT_VALIDATE" must not have any parameters',
+                    position: {
+                        startColumn: 3,
+                        endColumn: 19,
+                    },
+                },
+            ],
+        });
+
+        // NOT_VALIDATE should not have parameters
+        expect(linter.lint('!+ NOT_VALIDATE(aa, bb)')).toMatchObject({
+            problems: [
+                {
+                    rule: 'unknown-hints-and-platforms',
+                    severity: 2,
+                    message: 'Hint "NOT_VALIDATE" must not have any parameters',
+                    position: {
+                        startColumn: 3,
+                        endColumn: 23,
+                    },
+                },
+            ],
+        });
+
+        // Hint name is case-sensitive
+        expect(linter.lint('!+ not_validate')).toMatchObject({
+            problems: [
+                {
+                    rule: 'unknown-hints-and-platforms',
+                    severity: 2,
+                    message: 'Unknown hint name "not_validate"',
+                    position: {
+                        startColumn: 3,
+                        endColumn: 15,
+                    },
+                },
+            ],
+        });
+
         // Syntax error
         expect(linter.lint('!+ PLATFORM(')).toMatchObject({
             problems: [