Refactored to use strictly locals

frontend/cacheitem.lua

@@ -0,0 +1,19 @@
+--[[
+Inheritable abstraction for cache items
+--]]
+
+local CacheItem = {
+	size = 64, -- some reasonable default for simple Lua values / small tables
+}
+
+function CacheItem:new(o)
+	o = o or {}
+	setmetatable(o, self)
+	self.__index = self
+	return o
+end
+
+function CacheItem:onFree()
+end
+
+return CacheItem