feat: add PHPStan extensions

- detect deprecated functions
- check PHPUnit

Author: Rotzbua

composer.json

@@ -42,11 +42,13 @@
     "ext-gmp": "Optional for performance."
   },
   "require-dev": {
-    "phpunit/phpunit": "^11.5.46|^12.5.2",
-    "phpstan/phpstan": "^2.1.33",
     "friendsofphp/php-cs-fixer": "^v3.92.2",
-    "symfony/polyfill-iconv": "^1.33",
-    "phpstan/phpstan-strict-rules": "^2.0"
+    "phpstan/phpstan": "^2.1.33",
+    "phpstan/phpstan-deprecation-rules": "^2.0",
+    "phpstan/phpstan-phpunit": "^2.0",
+    "phpstan/phpstan-strict-rules": "^2.0",
+    "phpunit/phpunit": "^11.5.46|^12.5.2",
+    "symfony/polyfill-iconv": "^1.33"
   },
   "autoload": {
     "psr-4": {

phpstan.neon

@@ -5,9 +5,20 @@ parameters:
     reportUnmatchedIgnoredErrors: false
     ignoreErrors:
         - identifier: missingType.iterableValue
+          paths:
+              - src/Encryption.php
+              - src/MessageSentReport.php
+              - src/Notification.php
+              - src/Subscription.php
+              - src/Utils.php
+              - src/VAPID.php
+              - src/WebPush.php
     strictRules:
         booleansInConditions: false
         disallowedEmpty: false
 
 includes:
+    - vendor/phpstan/phpstan-deprecation-rules/rules.neon
+    - vendor/phpstan/phpstan-phpunit/extension.neon
+    - vendor/phpstan/phpstan-phpunit/rules.neon
     - vendor/phpstan/phpstan-strict-rules/rules.neon