GetInstanceInfoModule.lua

-- this an modulescript for roblox studio API. Do not execute this using lua-u.


local dir = workspace or game.Workspace
local insts = dir:GetChildren()
local printDirInfo = {}
function printDirInfo:Children(insts,dir)

			insts = dir:GetChildren()
			for i in pairs(insts) do

				if insts.Name then
					local genDiag = insts.Name
					print(genDiag)
				elseif insts.Name == nil then
					local function checkDiag(diag)
						if diag == nil then 
							print("Can't read instance number "..i..". Read Error Below")
							warn("Error Code -1, results: diag is nil, try to index the ")
						else

							print(diag)
							return
						end

					end

					local genDiag = tostring(insts[i])
					checkDiag(genDiag)

				end
			end
end
function printDirInfo:Name(dir)
	if dir.Name then print("Directory name is: "..tostring(dir.Name))
	else
		warn("You need to set an Instance. Function Cannot Continue... -4")
		print("Dir Name Result: "..dir.Name)
	end
	
end
function printDirInfo:ShowPermissionId()
	if script:IsA("LocalScript") or script:IsA("Script") then print("Permission Id: "..Enum.PermissionLevelShown.RobloxScript.Value) end
	local runService = game:GetService("RunService")
	if runService:IsStudio() then
		print("You're on studio; Permission ID is Unknown. ")
	end
	if runService:IsClient() then
		print("You're an client.")
	end
	if runService:IsServer() then
		print("You're the server. Inf perms id")
	end
end
function printDirInfo:getClass(dir)
	if dir.ClassName == nil then
		warn("Class Name is nil / dir parameter is not an instance. Function Can't Continue... -5")
	else
		print("Dir Class Name: "..tostring(dir.ClassName))
	end
end
return printDirInfo

require the module script first.

functions: Get Directory Children, Class, Name, Current Permission ID;
63 lines, scripted by pedrich / @Phroaguz in roblox. Open Source Project, if possible, please mention me when you're going to use this atleast, or give credits and a link for the gists. Thanks.

Shout-outs to: @boatbomber (Because why not XD), @caiomgt (Helped me to fix "Module doesnt return one exact value for requiring"), @cafcover (Best friend+dev helper).