Dialyzer Setup

.github/workflows/main.yml

@@ -61,3 +61,7 @@ jobs:
       - name: Run tests with code coverage
         run: mix coveralls.github
         if: ${{ matrix.coverage }}
+
+      - name: Run dialyzer
+        run: mix dialyzer
+        if: ${{ matrix.lint }}

lib/gettext/extractor.ex

@@ -388,11 +388,6 @@ defmodule Gettext.Extractor do
     end
   end
 
-  defp ensure_empty_msgstr!(%Message.Plural{} = message) do
-    raise Error,
-          "plural message with msgid '#{IO.iodata_to_binary(message.msgid)}' has a non-empty msgstr"
-  end
-
   defp blank?(str) when not is_nil(str), do: IO.iodata_length(str) == 0
   defp blank?(_), do: true
 

mix.exs

@@ -41,7 +41,8 @@ defmodule Gettext.Mixfile do
             &(&1[:module] == Gettext.Macros and to_string(&1[:name]) =~ ~r/_noop$/),
           "Translation Macros": &(&1[:module] == Gettext.Macros)
         ]
-      ]
+      ],
+      dialyzer: [list_unused_filters: true, plt_add_apps: [:mix]]
     ]
   end
 
@@ -74,6 +75,7 @@ defmodule Gettext.Mixfile do
 
       # Dev and test dependencies
       {:castore, "~> 1.0", only: :test},
+      {:dialyxir, "~> 1.0", only: [:dev, :test], runtime: false},
       {:jason, "~> 1.0", only: :test},
       {:ex_doc, "~> 0.19", only: :dev},
       {:excoveralls, "~> 0.18.0", only: :test}

mix.lock

@@ -1,6 +1,8 @@
 %{
   "castore": {:hex, :castore, "1.0.10", "43bbeeac820f16c89f79721af1b3e092399b3a1ecc8df1a472738fd853574911", [:mix], [], "hexpm", "1b0b7ea14d889d9ea21202c43a4fa015eb913021cb535e8ed91946f4b77a8848"},
+  "dialyxir": {:hex, :dialyxir, "1.4.7", "dda948fcee52962e4b6c5b4b16b2d8fa7d50d8645bbae8b8685c3f9ecb7f5f4d", [:mix], [{:erlex, ">= 0.2.8", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "b34527202e6eb8cee198efec110996c25c5898f43a4094df157f8d28f27d9efe"},
   "earmark_parser": {:hex, :earmark_parser, "1.4.44", "f20830dd6b5c77afe2b063777ddbbff09f9759396500cdbe7523efd58d7a339c", [:mix], [], "hexpm", "4778ac752b4701a5599215f7030989c989ffdc4f6df457c5f36938cc2d2a2750"},
+  "erlex": {:hex, :erlex, "0.2.8", "cd8116f20f3c0afe376d1e8d1f0ae2452337729f68be016ea544a72f767d9c12", [:mix], [], "hexpm", "9d66ff9fedf69e49dc3fd12831e12a8a37b76f8651dd21cd45fcf5561a8a7590"},
   "ex_doc": {:hex, :ex_doc, "0.39.1", "e19d356a1ba1e8f8cfc79ce1c3f83884b6abfcb79329d435d4bbb3e97ccc286e", [:mix], [{:earmark_parser, "~> 1.4.44", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_c, ">= 0.1.0", [hex: :makeup_c, repo: "hexpm", optional: true]}, {:makeup_elixir, "~> 0.14 or ~> 1.0", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1 or ~> 1.0", [hex: :makeup_erlang, repo: "hexpm", optional: false]}, {:makeup_html, ">= 0.1.0", [hex: :makeup_html, repo: "hexpm", optional: true]}], "hexpm", "8abf0ed3e3ca87c0847dfc4168ceab5bedfe881692f1b7c45f4a11b232806865"},
   "excoveralls": {:hex, :excoveralls, "0.18.3", "bca47a24d69a3179951f51f1db6d3ed63bca9017f476fe520eb78602d45f7756", [:mix], [{:castore, "~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "746f404fcd09d5029f1b211739afb8fb8575d775b21f6a3908e7ce3e640724c6"},
   "expo": {:hex, :expo, "1.1.0", "f7b9ed7fb5745ebe1eeedf3d6f29226c5dd52897ac67c0f8af62a07e661e5c75", [:mix], [], "hexpm", "fbadf93f4700fb44c331362177bdca9eeb8097e8b0ef525c9cc501cb9917c960"},