diff --git a/src/init.lua b/src/init.lua
index ceee3c9..1fd6527 100644
--- a/src/init.lua
+++ b/src/init.lua
@@ -34,13 +34,13 @@ local _,advancedTween = pcall(require,"src.libs.AdvancedTween"); ---@module src.
 function module.init()
 	local this = {items = {}};
 
+	this.require = require;
 	this.advancedTween = type(advancedTween) == "table" and advancedTween;
 	this.event = event.init(this);
 	this.store = store.init(this);
 	--this.style = style.init(this);
 	this.class = class.init(this);
 	this.mount = mount.init(this);
-	this.require = require;
 
 	--this.makeClass = makeClass;
 	--this.tween = tween;
diff --git a/src/store.lua b/src/store.lua
index b28cf92..cc51c01 100644
--- a/src/store.lua
+++ b/src/store.lua
@@ -136,6 +136,9 @@ function module.init(shared)
 		end
 		return register;
 	end
+	function store:default(key,value)
+		self[key] = self[key] or value;
+	end
 	function new.new(self)
 		return setmetatable(
 			{__self = self or {},__evt = setmetatable({},week),__reg = setmetatable({},week)},store