From dbcd2b1e65c3dc46b7231521773d7aeef7c3dd1c Mon Sep 17 00:00:00 2001
From: "Dylan K. Taylor" <dktapps@pmmp.io>
Date: Wed, 5 Apr 2023 21:04:00 +0100
Subject: [PATCH] ItemTypeIds::toBlockTypeId() now returns null for
 non-blockitem IDs closes #5648

---
 src/item/ItemTypeIds.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/item/ItemTypeIds.php b/src/item/ItemTypeIds.php
index 180842555..ddde0d1cb 100644
--- a/src/item/ItemTypeIds.php
+++ b/src/item/ItemTypeIds.php
@@ -320,9 +320,9 @@ final class ItemTypeIds{
 		return -$blockTypeId;
 	}
 
-	public static function toBlockTypeId(int $itemTypeId) : int{
-		if($itemTypeId > 0){
-			throw new \InvalidArgumentException("Item type ID $itemTypeId does not represent a block");
+	public static function toBlockTypeId(int $itemTypeId) : ?int{
+		if($itemTypeId > 0){ //not a blockitem
+			return null;
 		}
 		return -$itemTypeId;
 	}