Make PHPstan stricter

AUTHORS.md

@@ -143,6 +143,7 @@
 * [ritchiewilson](mailto:rawilson52@gmail.com)
 * [sonologic](mailto:gmc@sonologic.nl)
 * [tflidd](mailto:tflidd@aspekte.net)
+* [waffshappen](mailto:44290023+waffshappen@users.noreply.github.com)
 * [wizdude](mailto:wizdude@users.noreply.github.com)
 * [zero77](mailto:zero77@users.noreply.github.com)
 * [Éloi Rivard](mailto:eloi.rivard@aquilenet.fr)

CHANGELOG.md

@@ -3,6 +3,9 @@ All notable changes to this project will be documented in this file.
 
 ## Unreleased
 
+### Changed
+- Add PHPstan tricks
+
 ## 15.1.0-rc3
 
 ### Fixed

composer.json

@@ -57,7 +57,11 @@
   "require-dev": {
     "phpunit/phpunit": "9.2.*",
     "squizlabs/php_codesniffer": "^3.5.6",
-    "phpstan/phpstan": "^0.12.43"
+    "phpstan/phpstan": "^0.12.43",
+    "phpstan/phpstan-doctrine": "^0.12.22",
+    "phpstan/phpstan-strict-rules": "^0.12.5",
+    "phpstan/phpstan-phpunit": "^0.12.16",
+    "phpstan/extension-installer": "^1.0"
   },
   "replace": {
     "guzzlehttp/guzzle": "*",