From 3f6203f125d74baa32f4d50b8a0b193a404b1834 Mon Sep 17 00:00:00 2001
From: Cooldude2606 <25043174+Cooldude2606@users.noreply.github.com>
Date: Fri, 6 Mar 2026 13:27:45 +0000
Subject: [PATCH] Add valid recipe check and remove empty table check

---
 plugins/inventory_sync/module/serialize.lua | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/plugins/inventory_sync/module/serialize.lua b/plugins/inventory_sync/module/serialize.lua
index 04ae5d88..c6fed8c2 100644
--- a/plugins/inventory_sync/module/serialize.lua
+++ b/plugins/inventory_sync/module/serialize.lua
@@ -367,12 +367,7 @@ function serialize.serialize_crafting_notifications(player)
 		index = index + 1
 	end
 
-	-- Do no return if length is zero as this breaks with table_to_json
-	if index > 1 then
-		return helpers.encode_string(helpers.table_to_json(recipe_names))
-	end
-
-	return nil
+	return helpers.encode_string(helpers.table_to_json(recipe_names))
 end
 
 --- @param player LuaPlayer
@@ -382,8 +377,11 @@ function serialize.deserialize_crafting_notifications(player, serialized)
 	local recipe_names = helpers.json_to_table(assert(helpers.decode_string(serialized)))
 	assert(type(recipe_names) == "table", "wrong type decoded from json_to_table")
 	local clear_notification = player.clear_recipe_notification
+	local valid_recipes = compat.prototypes.recipe
 	for _, recipe_name in pairs(recipe_names) do
-		clear_notification(recipe_name)
+		if valid_recipes[recipe_name] then
+			clear_notification(recipe_name)
+		end
 	end
 end