add .formatter.exs + format

lib/blanks.ex

@@ -1,6 +1,7 @@
 defmodule Blanks do
   def replace(ast, replacements) do
     replacements = List.wrap(replacements)
+
     ast
     |> Macro.prewalk(replacements, &pre/2)
     |> elem(0)
@@ -10,6 +11,7 @@ defmodule Blanks do
     {args, replacements} = Macro.prewalk(args, replacements, &pre_pin/2)
     {put_elem(node, 2, args), replacements}
   end
+
   defp pre({:___, _, _}, [first | remainder]), do: {first, remainder}
   defp pre(node, acc), do: {node, acc}
 
@@ -21,6 +23,7 @@ defmodule Blanks do
       ^unquote(var)
     end
   end
+
   defp pin(var), do: var
 
   def count(ast) do
@@ -29,16 +32,18 @@ defmodule Blanks do
     |> elem(1)
   end
 
-  defp count({:___, _, _} = node, acc), do: {node, acc+1}
+  defp count({:___, _, _} = node, acc), do: {node, acc + 1}
   defp count(node, acc), do: {node, acc}
 
   def replace_line({:__block__, meta, lines}, replacement_fn) do
-    replaced_lines = Enum.map(lines, fn(line) ->
-      replace_line(line, replacement_fn)
-    end)
+    replaced_lines =
+      Enum.map(lines, fn line ->
+        replace_line(line, replacement_fn)
+      end)
 
     {:__block__, meta, replaced_lines}
   end
+
   def replace_line(line, replacement_fn) do
     if count(line) > 0 do
       replacement_fn.(line)