From de6dca34edf5ab52bc7eab02745c59d8c0dd777d Mon Sep 17 00:00:00 2001
From: Louis Pilfold <louis@lpil.uk>
Date: Sat, 16 Mar 2019 15:29:01 +0000
Subject: Custom error types over unit

---
 src/gleam__stdlib.erl | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'src/gleam__stdlib.erl')

diff --git a/src/gleam__stdlib.erl b/src/gleam__stdlib.erl
index 4af95eb..25abb25 100644
--- a/src/gleam__stdlib.erl
+++ b/src/gleam__stdlib.erl
@@ -4,7 +4,6 @@
 -export([expect_equal/2, expect_not_equal/2, expect_true/1, expect_false/1, map_fetch/2,
          iodata_append/2, iodata_prepend/2, identity/1]).
 
-
 expect_equal(A, Expected) -> ?assertEqual(Expected, A).
 expect_not_equal(A, Expected) -> ?assertNotEqual(Expected, A).
 expect_true(A) -> ?assert(A).
@@ -12,7 +11,7 @@ expect_false(A) -> ?assertNot(A).
 
 map_fetch(Map, Key) ->
   case maps:find(Key, Map) of
-    error -> {error, {}};
+    error -> {error, not_found};
     OkFound -> OkFound
   end.
 
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