diff --git a/src/crafting/CraftingGrid.php b/src/crafting/CraftingGrid.php
index b72392016..6050b5449 100644
--- a/src/crafting/CraftingGrid.php
+++ b/src/crafting/CraftingGrid.php
@@ -33,17 +33,12 @@ abstract class CraftingGrid extends SimpleInventory{
 	public const SIZE_SMALL = 2;
 	public const SIZE_BIG = 3;
 
-	/** @var int */
-	private $gridWidth;
+	private int $gridWidth;
 
-	/** @var int|null */
-	private $startX;
-	/** @var int|null */
-	private $xLen;
-	/** @var int|null */
-	private $startY;
-	/** @var int|null */
-	private $yLen;
+	private ?int $startX = null;
+	private ?int $xLen = null;
+	private ?int $startY = null;
+	private ?int $yLen = null;
 
 	public function __construct(int $gridWidth){
 		$this->gridWidth = $gridWidth;
diff --git a/src/crafting/CraftingManager.php b/src/crafting/CraftingManager.php
index ba690c844..f9d28bf28 100644
--- a/src/crafting/CraftingManager.php
+++ b/src/crafting/CraftingManager.php
@@ -57,11 +57,8 @@ class CraftingManager{
 	 */
 	protected $potionContainerChangeRecipes = [];
 
-	/**
-	 * @var ObjectSet
-	 * @phpstan-var ObjectSet<\Closure() : void>
-	 */
-	private $recipeRegisteredCallbacks;
+	/** @phpstan-var ObjectSet<\Closure() : void> */
+	private ObjectSet $recipeRegisteredCallbacks;
 
 	public function __construct(){
 		$this->recipeRegisteredCallbacks = new ObjectSet();
diff --git a/src/crafting/FurnaceRecipe.php b/src/crafting/FurnaceRecipe.php
index 55a6104fe..89d414e27 100644
--- a/src/crafting/FurnaceRecipe.php
+++ b/src/crafting/FurnaceRecipe.php
@@ -27,14 +27,11 @@ use pocketmine\item\Item;
 
 class FurnaceRecipe{
 
-	/** @var Item */
-	private $output;
-
-	/** @var Item */
-	private $ingredient;
-
-	public function __construct(Item $result, Item $ingredient){
-		$this->output = clone $result;
+	public function __construct(
+		private Item $result,
+		private Item $ingredient
+	){
+		$this->result = clone $result;
 		$this->ingredient = clone $ingredient;
 	}
 
@@ -43,6 +40,6 @@ class FurnaceRecipe{
 	}
 
 	public function getResult() : Item{
-		return clone $this->output;
+		return clone $this->result;
 	}
 }
diff --git a/src/crafting/FurnaceRecipeManager.php b/src/crafting/FurnaceRecipeManager.php
index 15bdee2fe..1f16f4707 100644
--- a/src/crafting/FurnaceRecipeManager.php
+++ b/src/crafting/FurnaceRecipeManager.php
@@ -30,11 +30,8 @@ final class FurnaceRecipeManager{
 	/** @var FurnaceRecipe[] */
 	protected $furnaceRecipes = [];
 
-	/**
-	 * @var ObjectSet
-	 * @phpstan-var ObjectSet<\Closure(FurnaceRecipe) : void>
-	 */
-	private $recipeRegisteredCallbacks;
+	/** @phpstan-var ObjectSet<\Closure(FurnaceRecipe) : void> */
+	private ObjectSet $recipeRegisteredCallbacks;
 
 	public function __construct(){
 		$this->recipeRegisteredCallbacks = new ObjectSet();
diff --git a/src/crafting/ShapedRecipe.php b/src/crafting/ShapedRecipe.php
index fc02224a9..984d17a91 100644
--- a/src/crafting/ShapedRecipe.php
+++ b/src/crafting/ShapedRecipe.php
@@ -34,16 +34,14 @@ use function strpos;
 
 class ShapedRecipe implements CraftingRecipe{
 	/** @var string[] */
-	private $shape = [];
+	private array $shape = [];
 	/** @var Item[] char => Item map */
-	private $ingredientList = [];
+	private array $ingredientList = [];
 	/** @var Item[] */
-	private $results = [];
+	private array $results = [];
 
-	/** @var int */
-	private $height;
-	/** @var int */
-	private $width;
+	private int $height;
+	private int $width;
 
 	/**
 	 * Constructs a ShapedRecipe instance.
diff --git a/src/crafting/ShapelessRecipe.php b/src/crafting/ShapelessRecipe.php
index 4ef3bfc1a..4e75369c0 100644
--- a/src/crafting/ShapelessRecipe.php
+++ b/src/crafting/ShapelessRecipe.php
@@ -29,9 +29,9 @@ use function count;
 
 class ShapelessRecipe implements CraftingRecipe{
 	/** @var Item[] */
-	private $ingredients = [];
+	private array $ingredients = [];
 	/** @var Item[] */
-	private $results;
+	private array $results;
 
 	/**
 	 * @param Item[] $ingredients No more than 9 total. This applies to sum of item stack counts, not count of array.