From 51069af59f86f95348063c9d4f3e4b9ad7db9eb3 Mon Sep 17 00:00:00 2001
From: v0idpwn <v0idpwn@gmail.com>
Date: Mon, 26 Dec 2022 06:35:46 +0100
Subject: [PATCH 1/3] Add Code.loaded?/1

---
 lib/elixir/lib/code.ex               | 20 ++++++++++++++++++++
 lib/elixir/test/elixir/code_test.exs |  5 +++++
 2 files changed, 25 insertions(+)

diff --git a/lib/elixir/lib/code.ex b/lib/elixir/lib/code.ex
index dbef73f753c..a11a1ac5793 100644
--- a/lib/elixir/lib/code.ex
+++ b/lib/elixir/lib/code.ex
@@ -1687,6 +1687,26 @@ defmodule Code do
     end
   end
 
+  @doc """
+  Returns true if the module is loaded.
+
+  This function doesn't attempt to load the module. For such behaviour,
+  `ensure_loaded?/1` can be used.
+
+  ## Examples
+
+      iex> Code.loaded?(Atom)
+      true
+
+      iex> Code.loaded?(NotYetLoaded)
+      false
+
+  """
+  @doc since: "1.15.0"
+  def loaded?(module) do
+    :erlang.module_loaded(module)
+  end
+
   @doc """
   Returns true if the current process can await for module compilation.
 
diff --git a/lib/elixir/test/elixir/code_test.exs b/lib/elixir/test/elixir/code_test.exs
index 95123cb2095..45f6e3eb8f6 100644
--- a/lib/elixir/test/elixir/code_test.exs
+++ b/lib/elixir/test/elixir/code_test.exs
@@ -358,6 +358,11 @@ defmodule CodeTest do
     end
   end
 
+  test "loaded?/1" do
+    assert Code.loaded?(__MODULE__)
+    refute Code.loaded?(Code.NoFile)
+  end
+
   test "put_compiler_option/2 validates options" do
     message = "unknown compiler option: :not_a_valid_option"
 

From e1fe877bb11fde87d6e571e8ff4d85f9f3d4be8d Mon Sep 17 00:00:00 2001
From: Andrea Leopardi <an.leopardi@gmail.com>
Date: Mon, 26 Dec 2022 08:45:11 +0100
Subject: [PATCH 2/3] Apply suggestions from code review

Co-authored-by: felipe stival <14948182+v0idpwn@users.noreply.github.com>
---
 lib/elixir/lib/code.ex               | 2 +-
 lib/elixir/test/elixir/code_test.exs | 5 -----
 2 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/lib/elixir/lib/code.ex b/lib/elixir/lib/code.ex
index a11a1ac5793..ee638c9d497 100644
--- a/lib/elixir/lib/code.ex
+++ b/lib/elixir/lib/code.ex
@@ -1688,7 +1688,7 @@ defmodule Code do
   end
 
   @doc """
-  Returns true if the module is loaded.
+  Returns `true` if the module is loaded.
 
   This function doesn't attempt to load the module. For such behaviour,
   `ensure_loaded?/1` can be used.
diff --git a/lib/elixir/test/elixir/code_test.exs b/lib/elixir/test/elixir/code_test.exs
index 45f6e3eb8f6..95123cb2095 100644
--- a/lib/elixir/test/elixir/code_test.exs
+++ b/lib/elixir/test/elixir/code_test.exs
@@ -358,11 +358,6 @@ defmodule CodeTest do
     end
   end
 
-  test "loaded?/1" do
-    assert Code.loaded?(__MODULE__)
-    refute Code.loaded?(Code.NoFile)
-  end
-
   test "put_compiler_option/2 validates options" do
     message = "unknown compiler option: :not_a_valid_option"
 

From 35239add08a99ccd9aad6b79ba06cae2bbfd46a9 Mon Sep 17 00:00:00 2001
From: Andrea Leopardi <an.leopardi@gmail.com>
Date: Mon, 26 Dec 2022 08:45:41 +0100
Subject: [PATCH 3/3] Update lib/elixir/lib/code.ex

---
 lib/elixir/lib/code.ex | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/elixir/lib/code.ex b/lib/elixir/lib/code.ex
index ee638c9d497..875db5b5000 100644
--- a/lib/elixir/lib/code.ex
+++ b/lib/elixir/lib/code.ex
@@ -1703,6 +1703,7 @@ defmodule Code do
 
   """
   @doc since: "1.15.0"
+  @spec loaded?(module) :: boolean
   def loaded?(module) do
     :erlang.module_loaded(module)
   end