Fix itemdef defaults not being applied in async env

builtin/async/game.lua

@@ -36,11 +36,16 @@ do
 		setmetatable(v, {__newindex = {}})
 		-- Reassemble the other tables
 		if v.type == "node" then
+			getmetatable(v).__index = all.nodedef_default
 			all.registered_nodes[k] = v
 		elseif v.type == "craft" then
+			getmetatable(v).__index = all.craftitemdef_default
 			all.registered_craftitems[k] = v
 		elseif v.type == "tool" then
+			getmetatable(v).__index = all.tooldef_default
 			all.registered_tools[k] = v
+		else
+			getmetatable(v).__index = all.noneitemdef_default
 		end
 	end
 

builtin/game/misc.lua

@@ -261,6 +261,11 @@ function core.get_globals_to_transfer()
 	local all = {
 		registered_items = copy_filtering(core.registered_items),
 		registered_aliases = core.registered_aliases,
+
+		nodedef_default = copy_filtering(core.nodedef_default),
+		craftitemdef_default = copy_filtering(core.craftitemdef_default),
+		tooldef_default = copy_filtering(core.tooldef_default),
+		noneitemdef_default = copy_filtering(core.noneitemdef_default),
 	}
 	return all
 end

games/devtest/mods/unittests/inside_async_env.lua

@@ -19,6 +19,8 @@ local function do_tests()
 	-- alias handling
 	assert(core.registered_items["unittests:steel_ingot_alias"].name ==
 		"unittests:steel_ingot")
+	-- fallback to item defaults
+	assert(core.registered_items["unittests:description_test"].on_place == true)
 end
 
 function unittests.async_test()