From 5d4f97a8549c19e61d5633d1166e53a5d856b3d7 Mon Sep 17 00:00:00 2001
From: Jay Hayes <ur@iamvery.com>
Date: Fri, 4 Jan 2019 08:57:15 -0600
Subject: [PATCH] Make code loading compatible and deprecation free on old and
 new elixirs

---
 lib/watcher.ex | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/lib/watcher.ex b/lib/watcher.ex
index a183cad..6839b55 100644
--- a/lib/watcher.ex
+++ b/lib/watcher.ex
@@ -24,7 +24,7 @@ defmodule Watcher do
     if Path.extname(file) == ".ex" do
       try do
         file
-        |> Code.compile_file()
+        |> portable_load_file
         |> Enum.map(&elem(&1, 0))
         |> Enum.find(&Runner.koan?/1)
         |> Runner.modules_to_run()
@@ -35,6 +35,17 @@ defmodule Watcher do
     end
   end
 
+  # Elixir 1.7 deprecates Code.load_file in favor of Code.compile_file. In
+  # order to avoid the depecation warnings while maintaining backwards
+  # compatibility, we check the sytem version and execute conditionally.
+  defp portable_load_file(file) do
+    if Version.match?(System.version(), "~> 1.7") do
+      Code.compile_file(file)
+    else
+      Code.load_file(file)
+    end
+  end
+
   defp normalize(file) do
     String.replace_suffix(file, "___jb_tmp___", "")
   end