[5.x] Fix primitive type hint handling in Statamic routes

src/Http/Controllers/FrontendController.php

@@ -99,7 +99,10 @@ private static function resolveRouteClosure(Closure $closure, array $params)
         $reflect = new ReflectionFunction($closure);
 
         $params = collect($reflect->getParameters())
-            ->map(fn ($param) => $param->hasType() ? app($param->getType()->getName()) : $params[$param->getName()])
+            ->map(fn ($param) => $param->hasType() && class_exists($class = $param->getType()->getName())
+                ? app($class)
+                : $params[$param->getName()]
+            )
             ->all();
 
         return $closure(...$params);

tests/Routing/RoutesTest.php

@@ -74,6 +74,10 @@ protected function resolveApplicationConfiguration($app)
                 return view('test', ['hello' => "view closure dependencies: $request->value $foo->value $bar->value $baz $qux"]);
             });
 
+            Route::statamic('/route/with/placeholders/view/closure-primitive-type-hints/{name}/{age}', function (string $name, int $age) {
+                return view('test', ['hello' => "view closure placeholders: $name $age"]);
+            });
+
             Route::statamic('/route/with/placeholders/data/closure/{foo}/{bar}/{baz}', 'test', function ($foo, $bar, $baz) {
                 return ['hello' => "data closure placeholders: $foo $bar $baz"];
             });
@@ -86,6 +90,10 @@ protected function resolveApplicationConfiguration($app)
                 return ['hello' => "data closure dependencies: $request->value $foo->value $bar->value $baz $qux"];
             });
 
+            Route::statamic('/route/with/placeholders/data/closure-primitive-type-hints/{name}/{age}', 'test', function (string $name, int $age) {
+                return ['hello' => "data closure placeholders: $name $age"];
+            });
+
             Route::statamic('/route-with-custom-layout', 'test', [
                 'layout' => 'custom-layout',
                 'hello' => 'world',
@@ -320,6 +328,17 @@ public function it_renders_a_view_with_placeholders_using_a_view_closure_and_dep
             ->assertSee('Hello view closure dependencies: request_value foo_class bar_class_modified one two');
     }
 
+    #[Test]
+    public function it_renders_a_view_with_placeholders_using_a_view_closure_using_primitive_type_hints()
+    {
+        $this->viewShouldReturnRaw('layout', '{{ template_content }}');
+        $this->viewShouldReturnRaw('test', 'Hello {{ hello }}');
+
+        $this->get('/route/with/placeholders/view/closure-primitive-type-hints/darth/42')
+            ->assertOk()
+            ->assertSee('Hello view closure placeholders: darth 42');
+    }
+
     #[Test]
     public function it_renders_a_view_with_placeholders_using_a_data_closure()
     {
@@ -360,6 +379,17 @@ public function it_renders_a_view_with_placeholders_using_a_data_closure_and_dep
             ->assertSee('Hello data closure dependencies: request_value foo_class bar_class_modified one two');
     }
 
+    #[Test]
+    public function it_renders_a_view_with_placeholders_using_a_data_closure_using_primitive_type_hints()
+    {
+        $this->viewShouldReturnRaw('layout', '{{ template_content }}');
+        $this->viewShouldReturnRaw('test', 'Hello {{ hello }}');
+
+        $this->get('/route/with/placeholders/data/closure-primitive-type-hints/darth/42')
+            ->assertOk()
+            ->assertSee('Hello data closure placeholders: darth 42');
+    }
+
     #[Test]
     public function it_renders_a_view_with_custom_layout()
     {