Reuse weak-table metatables

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 ## 2.8.1
 - Multiple presences are now flattened into one
-- Fixed typo in `Guild:splashURL`
+- Fixed typo in `Guild.splashURL` result
 - Fixed issue where `Ban` objects generated by `Guild:getBan` did not have the correct parent type
 - Fixed crash when FFmpeg process would close before reading
 - Removed FFI dependency in Date class

libs/iterables/Cache.lua

@@ -11,6 +11,8 @@ local null = json.null
 
 local Cache = require('class')('Cache', Iterable)
 
+local meta = {__mode = 'v'}
+
 function Cache:__init(array, constructor, parent)
 	local objects = {}
 	for _, data in ipairs(array) do
@@ -21,7 +23,7 @@ function Cache:__init(array, constructor, parent)
 	self._objects = objects
 	self._constructor = constructor
 	self._parent = parent
-	self._deleted = setmetatable({}, {__mode = 'v'})
+	self._deleted = setmetatable({}, meta)
 end
 
 function Cache:__pairs()

libs/iterables/WeakCache.lua

@@ -11,9 +11,11 @@ local Iterable = require('iterables/Iterable')
 
 local WeakCache = require('class')('WeakCache', Cache)
 
+local meta = {__mode = 'v'}
+
 function WeakCache:__init(array, constructor, parent)
 	Cache.__init(self, array, constructor, parent)
-	setmetatable(self._objects, {__mode = 'v'})
+	setmetatable(self._objects, meta)
 end
 
 function WeakCache:__len() -- NOTE: _count is not accurate for weak caches