Change what a function does outside of the function

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#1

a more dificult one but might be interesting.
in replicated storage i have a modulescript with the following script

local module = {}

function module.function1 (var1,var2)
--some action
end

function module.function2 (var3, var4)
--some action
end
...
...
...
function module.function99 (var234, var123)
--some action
end

I want this module to be both available to clientside and serverside.
so I was thinking of sending everything through a remote event

local RemoteEvent = script.Parent

local RunService = game:GetService("RunService")
if RunService:IsServer() == true then
	RemoteEvent.OnServerEvent:Connect(function(player,func,...)
		module[func](...)
	end)
end

here is my dilemma…
i can add a

 if RunService:IsClient() == true then end

to every function… but there has to be a better way… i do want to keep the function names and variable names with the type checking

#2

You either have to have the if statement to check if it is a client in each one, or have two seperate module scripts.