type fixes

Author: dg

src/Caching/OutputHelper.php

@@ -20,9 +20,9 @@ class OutputHelper
 	use Nette\SmartObject;
 
 	/** @var array */
-	public $dependencies;
+	public $dependencies = [];
 
-	/** @var Cache */
+	/** @var Cache|null */
 	private $cache;
 
 	/** @var string */
@@ -40,12 +40,12 @@ public function __construct(Cache $cache, $key)
 	/**
 	 * Stops and saves the cache.
 	 */
-	public function end(array $dependencies = null): void
+	public function end(array $dependencies = []): void
 	{
 		if ($this->cache === null) {
 			throw new Nette\InvalidStateException('Output cache has already been saved.');
 		}
-		$this->cache->save($this->key, ob_get_flush(), (array) $dependencies + (array) $this->dependencies);
+		$this->cache->save($this->key, ob_get_flush(), $dependencies + $this->dependencies);
 		$this->cache = null;
 	}
 }