chore: update to larastan lvl 4

Author: CodeDredd

phpstan.neon

@@ -2,7 +2,7 @@ includes:
     - ./vendor/nunomaduro/larastan/extension.neon
 
 parameters:
-    level: 3
+    level: 4
     ignoreErrors:
         - '#Access to an undefined property DOMNamedNodeMap::\$length#'
         - '#Calling the helper function#'
@@ -12,4 +12,5 @@ parameters:
     tmpDir: build/phpstan
     checkOctaneCompatibility: true
     checkModelProperties: true
+    treatPhpDocTypesAsCertain: false
     checkMissingIterableValueType: false

src/Client/ResponseSequence.php

@@ -24,9 +24,9 @@ class ResponseSequence
     /**
      * The response that should be returned when the sequence is empty.
      *
-     * @var \GuzzleHttp\Promise\PromiseInterface
+     * @var ?\GuzzleHttp\Promise\PromiseInterface
      */
-    protected $emptyResponse;
+    protected ?\GuzzleHttp\Promise\PromiseInterface $emptyResponse = null;
 
     /**
      * Create a new response sequence.

src/Ray/LaravelRay.php

@@ -27,9 +27,7 @@ protected function handleWatcherCallable(Watcher $watcher, Closure $callable = n
 
         $watcher->enable();
 
-        if ($rayProxy) {
-            $watcher->setRayProxy($rayProxy);
-        }
+        $watcher->setRayProxy($rayProxy);
 
         if ($callable) {
             $callable();