Compile warning on an import that shouldn't be called

Questions / Help
1

Hello there! :wave:

This should be quite a straightforward question for those who have more knowledge about how Elixir compiles our files :eyes:

I have a module where I want to compile (or not) some imports depending on the environments I’m using (dev, test, prod).
Why do I want that? Because if I don’t do it, Elixir will show some ugly warnings during my compilations.

The code looks like this:

defmodule MyApp do
  @moduledoc false

  if Mix.env() == :dev do
    def fun(a,b), do: a
  else
    import Phoenix.LiveView
  
    def fun(a,b) do
      # use any LiveView functions here
    end
  end
end

This code works so, what’s the problem here?

Even if I’m in dev environment, I get the compiler warning saying that the import is not getting used. Same thing happens if instead of an import I have an alias not used.

What can I do (if it’s possible) to avoid these warnings in dev env?
As far as I know the compiler should not execute that part of the code.

Thanks in advance!