workspace.SignalBehavior check

signalbehavior_check.luau

local function isDeferred(): boolean
	local result = true
	local eventus = Instance.new("BindableEvent")

	eventus.Event:Once(function()
		result = false
		eventus:Destroy()
	end)
	eventus:Fire()
	return result
end

local function isAncestryDeferred(): boolean
	local result = false
	local container = Instance.new("Folder")
	local check = Instance.new("Folder", container)

	container.DescendantRemoving:Once(function()
		result = not check.Parent
	end)
	container:Destroy()
	return result
end

local SIGNAL_BEHAVIOR = (function()
	task.wait() -- waits for a frame so there would be no false-positives on Client
	if isDeferred() then
		return Enum.SignalBehavior.Deferred
	elseif isAncestryDeferred() then
		return Enum.SignalBehavior.AncestryDeferred
	end

	return Enum.SignalBehavior.Immediate
end)()

print(SIGNAL_BEHAVIOR)

how this works?

• in Deferred, Signals are checked if it would fire immediately
• in AncestryDeferred, the check's parent would be checked if Parent is not nil in DescendantRemoving since signals still does act Immediate
• Immediate would be the default if previous checks failed

i know the Deferred check is known but i just want to share something to the community