chore(lint): ➕ add PHPStan

Author: stein197

.vscode/settings.json

@@ -5,6 +5,7 @@
 		"git",
 		"github",
 		"json",
+		"lint",
 		"readme",
 		"response",
 		"test"

Makefile

@@ -6,5 +6,10 @@ exec = docker run --tty --workdir "/app" --volume "./:/app" --user=$(shell id -u
 install: # Install the project
 	$(exec) "composer install"
 
+check: test phpstan # Run PHPUnit and PHPStan
+
 test: # Run PHPUnit tests
 	$(exec) "composer test"
+
+phpstan: # Run PHPStan checks
+	$(exec) "composer phpstan"

composer.json

@@ -4,10 +4,12 @@
     "type": "library",
     "license": "MIT",
     "scripts": {
-        "test": "@php vendor/bin/phpunit"
+        "test": "@php vendor/bin/phpunit",
+        "phpstan": "phpstan analyse --level 10 src"
     },
     "scripts-descriptions": {
-        "test": "Run PHPUnit tests"
+        "test": "Run PHPUnit tests",
+        "phpstan": "Run PHPStan checks"
     },
     "autoload": {
         "psr-4": {
@@ -29,6 +31,7 @@
         "galbar/jsonpath": "^3.0"
     },
     "require-dev": {
-        "nyholm/psr7": "^1.8"
+        "nyholm/psr7": "^1.8",
+        "phpstan/phpstan": "^2.1"
     }
 }