diff --git a/src/Database/Model.php b/src/Database/Model.php
index 45031b2cb..d03442c5e 100644
--- a/src/Database/Model.php
+++ b/src/Database/Model.php
@@ -31,9 +31,9 @@ class Model extends EloquentModel implements ModelInterface
     use \Winter\Storm\Database\Traits\DeferredBinding;
 
     /**
-     * @var array Behaviors implemented by this model.
+     * @var string|array|null Extensions implemented by this class.
      */
-    public $implement;
+    public $implement = null;
 
     /**
      * @var array Make the model's attributes public so behaviors can modify them.
diff --git a/src/Database/Traits/Validation.php b/src/Database/Traits/Validation.php
index 94dca33d1..a4f68504b 100644
--- a/src/Database/Traits/Validation.php
+++ b/src/Database/Traits/Validation.php
@@ -132,10 +132,13 @@ protected function getRelationValidationValue($relationName)
      * Instantiates the validator used by the validation process, depending if the class
      * is being used inside or outside of Laravel. Optional connection string to make
      * the validator use a different database connection than the default connection.
-     * @return \Illuminate\Validation\Validator
+     *
+     * @return \Illuminate\Contracts\Validation\Validator
+     * @phpstan-return \Illuminate\Validation\Validator
      */
     protected static function makeValidator($data, $rules, $customMessages, $attributeNames, $connection = null)
     {
+        /** @var \Illuminate\Validation\Validator $validator */
         $validator = Validator::make($data, $rules, $customMessages, $attributeNames);
 
         if ($connection !== null) {
diff --git a/src/Extension/Extendable.php b/src/Extension/Extendable.php
index 7d890e327..0ff0ffa89 100644
--- a/src/Extension/Extendable.php
+++ b/src/Extension/Extendable.php
@@ -18,9 +18,9 @@ class Extendable
     use ExtendableTrait;
 
     /**
-     * @var array Extensions implemented by this class.
+     * @var string|array|null Extensions implemented by this class.
      */
-    public $implement;
+    public $implement = null;
 
     /**
      * Constructor
diff --git a/src/Extension/ExtendableTrait.php b/src/Extension/ExtendableTrait.php
index 4c1252df4..84f19847f 100644
--- a/src/Extension/ExtendableTrait.php
+++ b/src/Extension/ExtendableTrait.php
@@ -16,7 +16,6 @@
  *
  * @author Alexey Bobkov, Samuel Georges
  */
-
 trait ExtendableTrait
 {
     /**
@@ -72,18 +71,12 @@ public function extendableConstruct()
         /*
          * Apply extensions
          */
-        if (!$this->implement) {
-            return;
-        }
-
         if (is_string($this->implement)) {
             $uses = explode(',', $this->implement);
-        }
-        elseif (is_array($this->implement)) {
+        } elseif (is_array($this->implement)) {
             $uses = $this->implement;
-        }
-        else {
-            throw new Exception(sprintf('Class %s contains an invalid $implement value', get_class($this)));
+        } else {
+            return;
         }
 
         foreach ($uses as $use) {
diff --git a/src/Foundation/Http/Kernel.php b/src/Foundation/Http/Kernel.php
index 3d3e5bd24..1c4218cfc 100644
--- a/src/Foundation/Http/Kernel.php
+++ b/src/Foundation/Http/Kernel.php
@@ -5,9 +5,7 @@
 class Kernel extends HttpKernel
 {
     /**
-     * The bootstrap classes for the application.
-     *
-     * @var string[]
+     * {@inheritDoc}
      */
     protected $bootstrappers = [
         \Winter\Storm\Foundation\Bootstrap\RegisterClassLoader::class,
@@ -22,9 +20,7 @@ class Kernel extends HttpKernel
     ];
 
     /**
-     * The application's global HTTP middleware stack.
-     *
-     * @var array
+     * {@inheritDoc}
      */
     protected $middleware = [
         \Winter\Storm\Foundation\Http\Middleware\CheckForTrustedHost::class,
@@ -33,9 +29,7 @@ class Kernel extends HttpKernel
     ];
 
     /**
-     * The application's route middleware.
-     *
-     * @var array
+     * {@inheritDoc}
      */
     protected $routeMiddleware = [
         // 'auth' => \Illuminate\Auth\Middleware\Authenticate::class,
@@ -47,9 +41,7 @@ class Kernel extends HttpKernel
     ];
 
     /**
-     * The application's route middleware groups.
-     *
-     * @var array
+     * {@inheritDoc}
      */
     protected $middlewareGroups = [
         'web' => [
@@ -67,11 +59,7 @@ class Kernel extends HttpKernel
     ];
 
     /**
-     * The priority-sorted list of middleware.
-     *
-     * Forces the listed middleware to always be in the given order.
-     *
-     * @var string[]
+     * {@inheritDoc}
      */
     protected $middlewarePriority = [
         \Illuminate\Session\Middleware\StartSession::class,
diff --git a/src/Network/Http.php b/src/Network/Http.php
index 011967fa3..fc9c4943e 100644
--- a/src/Network/Http.php
+++ b/src/Network/Http.php
@@ -111,7 +111,7 @@ class Http
     /**
      * @var array cURL Options.
      */
-    public $requestOptions;
+    public $requestOptions = [];
 
     /**
      * @var array Request data.
@@ -280,7 +280,7 @@ public function send()
             curl_setopt($curl, CURLOPT_MAXREDIRS, $this->maxRedirects);
         }
 
-        if ($this->requestOptions && is_array($this->requestOptions)) {
+        if (count($this->requestOptions)) {
             curl_setopt_array($curl, $this->requestOptions);
         }
 
diff --git a/src/Support/Facades/DB.php b/src/Support/Facades/DB.php
index f5738678c..d2c0bb8bf 100644
--- a/src/Support/Facades/DB.php
+++ b/src/Support/Facades/DB.php
@@ -4,7 +4,7 @@
 
 /**
  * @method static \Doctrine\DBAL\Driver\PDOConnection getPdo()
- * @method static \Illuminate\Database\ConnectionInterface connection(string $name = null)
+ * @method static \Illuminate\Database\Connection connection(string $name = null)
  * @method static \Winter\Storm\Database\QueryBuilder table(string $table, string $as = null)
  * @method static \Illuminate\Database\Query\Expression raw($value)
  * @method static array getQueryLog()
diff --git a/src/Support/Facades/File.php b/src/Support/Facades/File.php
index eeb25eb73..4442c87f1 100644
--- a/src/Support/Facades/File.php
+++ b/src/Support/Facades/File.php
@@ -4,7 +4,7 @@
 
 /**
  * @method static bool exists(string $path)
- * @method static string get(string $path, bool $lock)
+ * @method static string get(string $path, bool $lock = false)
  * @method static string sharedGet(string $path)
  * @method static mixed getRequire(string $path)
  * @method static mixed requireOnce(string $file)
diff --git a/src/Support/helpers.php b/src/Support/helpers.php
index 6863d796f..aa95f4af2 100644
--- a/src/Support/helpers.php
+++ b/src/Support/helpers.php
@@ -35,7 +35,9 @@ function e($value, $doubleEncode = false)
      */
     function trans($id = null, $parameters = [], $locale = null)
     {
-        return app('translator')->trans($id, $parameters, $locale);
+        /** @var \Winter\Storm\Translation\Translator $translator */
+        $translator = app('translator');
+        return $translator->trans($id, $parameters, $locale);
     }
 }