Problem with type checking metatable

Help and Feedback Scripting Support
,
#1

I have just learned OOP and type checking for like a month. I’m kind of new to it and having a problem…

Problem
So, i created a type checking module script (placed in replicated storage)
The issue is when i type --!strict, my main script (separate from the type checking script) appears this bug:
Capture

What i have tried
I have tried to ask ChatGPT for solution… But seems it doesn’t help my problem.
I thought i have figured out from a post i saw from dev forum but seems the problem still there…
Here is that post link: Guide to Type-Checking with OOP - Resources / Community Tutorials - Developer Forum | Roblox

Here is my type checking script:

local types = {}

export type animatronic = {
	Connection: RBXScriptConnection?,
	Char: Model?,
	Name: string,
	AiNumber: number,
	DoorRoute: string,

	--//Methods
	New: (char, AiNumber, DoorRoute, TotalRoute) -> (),
	Decide: (self) -> (number),
	Static: (self, bool: boolean) -> (),
	Jumpscare: (self) -> ()
} & any & typeof(setmetatable({}::self ,animatronic))

export type Foxy = {
	self: typeof(setmetatable({}::self ,Foxy)),
	foxyMinigameDuration: number,
	foxyAttack: boolean,
	SystemCountRequire: number,
	PlayerCount: IntValue?, 

	--//Methods//--
	New: (char, AiNumber, DoorRoute, TotalRoute) -> (),
	_RandomPlushie: (self, number) -> (), 
	Attack: (self) -> (),
	Move: (self) -> (),
	CreateMove: (self) -> ()
} & animatronic

return types

Thank you for reading, I’m really bad at this :sob: .
Appreciate any comment! (sorry for my English skill) tell me if you need more information.
If you have any docs or posts that may help, it would be absolute awesome!!

#2

Can you show us the entire setmetatable line?

Also, I assume that BaseAnimatronic is of type animatronic, correct? If that is the case, I suspect that the issue is that the New method in the class is specified as returning nothing because of the empty brackets after the arrow (...) -> (). You should add the return type in those brackets if it returns something.

1 Like
#3

Here is the script that contain bug:

--// Module Scripts
local BaseAnimatronic = require(script.Parent)

local Foxy = {}
Foxy.__index = Foxy
setmetatable(Foxy, BaseAnimatronic)

--// Initialization
function Foxy.New(char, AiNumber, DoorRoute, TotalRoute): AnimatronicTypes.Foxy
	local self = setmetatable(BaseAnimatronic.New(char, AiNumber, DoorRoute, TotalRoute), Foxy)
	self.foxyMinigameDuration = 60
	self.foxyAttack = false

	--// Player-related variables
	self.SystemCountRequire = 0
	self.PlayerCount = ServerScriptService.Settings:WaitForChild("counterNum")

	return self
end

Here is the script which called BaseAnimatronic (The one contains New function):

local AiMovement = {}
AiMovement.__index = AiMovement

function AiMovement.New(char, AiNumber, DoorRoute, TotalRoute): AnimatronicTypes.animatronic
	local self = setmetatable({}, AiMovement) :: AnimatronicTypes.animatronic
	self.Connection = nil
	self.Char = char
	self.Name = char.Name
	self.AiNumber = AiNumber
	self.DoorRoute = DoorRoute
	return self
end

Its like returning a table ig, the “new” method or function (idk what it called._.).