add few phpstan extensions

README.md

@@ -37,7 +37,7 @@ How to keep **cognitive complexity on 1**? Read [Keep Cognitive Complexity Low w
 composer require tomasvotruba/cognitive-complexity --dev
 ```
 
-The package is available on PHP 7.4-8.1 versions in tagged releases.
+The package is available on PHP 7.4+.
 
 <br>
 
@@ -47,7 +47,7 @@ With [PHPStan extension installer](https://github.com/phpstan/extension-installe
 
 Enable each item on their own with simple configuration:
 
-```neon
+```yaml
 # phpstan.neon
 parameters:
     cognitive_complexity:

composer.json

@@ -6,15 +6,18 @@
     "require": {
         "php": "^8.2",
         "phpstan/phpstan": "^2.0",
-        "nikic/php-parser": "^5"
+        "nikic/php-parser": "^5.3"
     },
     "require-dev": {
-        "phpstan/extension-installer": "^1.3",
-        "phpunit/phpunit": "^10.3",
-        "symplify/easy-coding-standard": "^12.0",
-        "rector/rector": "^2",
-        "tracy/tracy": "^2.9",
-        "php-parallel-lint/php-parallel-lint": "^1.3"
+        "phpstan/extension-installer": "^1.4",
+        "phpstan/phpstan-deprecation-rules": "^2.0",
+        "phpunit/phpunit": "^11.5",
+        "symplify/easy-coding-standard": "^12.5",
+        "rector/rector": "^2.0",
+        "tracy/tracy": "^2.10",
+        "php-parallel-lint/php-parallel-lint": "^1.4",
+        "tomasvotruba/type-coverage": "^2.0",
+        "tomasvotruba/unused-public": "^2.0"
     },
     "autoload": {
         "psr-4": {

phpstan.neon

@@ -7,6 +7,11 @@ parameters:
         class: 50
         function: 8
 
+    unused_public:
+        methods: true
+        properties: true
+        constants: true
+
     level: 8
 
     paths:
@@ -22,3 +27,6 @@ parameters:
 
         # skip as always string
         - '#Parameter \#1 \$currentWorkingDirectory of class PHPStan\\DependencyInjection\\ContainerFactory constructor expects string, string\|false given#'
+
+        # used in tests
+        - '#Public constant "TomasVotruba\\CognitiveComplexity\\Rules\\(.*?)::ERROR_MESSAGE" is never used#'