diff --git a/.vscode/settings.json b/.vscode/settings.json
deleted file mode 100644
index 22c8faa..0000000
--- a/.vscode/settings.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-    "Lua.diagnostics.disable": [
-        "lowercase-global"
-    ]
-}
\ No newline at end of file
diff --git a/def/Object.d.lua b/def/Object.d.lua
new file mode 100644
index 0000000..881f492
--- /dev/null
+++ b/def/Object.d.lua
@@ -0,0 +1,24 @@
+---@diagnostic disable: undefined-field
+---@meta
+---@module 'classic'
+
+---@class Object
+local Object = {}
+
+---Create a new instance of the class.
+---@return self
+function Object:new(...) end
+
+---Call the super-class constructor.
+---@param self Object
+function Object.super.new(self, ...) end
+
+---Create a subclass.
+---@return Object   # the new subclass (its metatable is set up)
+function Object:extend() end
+
+---Mix-in a table of methods into the class.
+---@param mixin table
+function Object:implement(mixin) end
+
+return Object
diff --git a/learns.code-workspace b/learns.code-workspace
index de0f034..14bcdfd 100644
--- a/learns.code-workspace
+++ b/learns.code-workspace
@@ -10,8 +10,15 @@
 			"love.filesystem.load": "loadfile"
 		},
 		"Lua.diagnostics.globals": ["love"],
-		"Lua.workspace.library": ["${3rd}/love2d/library"],
-		"Lua.workspace.checkThirdParty": true
+		"Lua.workspace.library": [
+			"${3rd}/love2d/library",
+			"${3rd}/classic",
+			"${workspaceFolder}/def"
+		],
+		"Lua.workspace.checkThirdParty": true,
+		"Lua.diagnostics.disable": [
+        	"lowercase-global"
+    	]
 	},
 	"launch": {
 		"version": "0.2.0",