fix: new line after fn keyword

Author: mhanberg

lib/spitfire.ex

@@ -583,7 +583,7 @@ defmodule Spitfire do
   end
 
   defp parse_anon_function(%{current_token: {:fn, _}} = parser) do
-    parser = next_token(parser)
+    parser = parser |> next_token() |> eat_eol()
 
     {ast, parser} = parse_expression(parser, top: true)
 

test/spitfire_test.exs

@@ -888,6 +888,12 @@ defmodule SpitfireTest do
          one
        end
        ''', {:fn, [], [{:->, [depth: 0], [[{:one, [], Elixir}], {:one, [], Elixir}]}]}},
+      {~s'''
+       fn
+        one ->
+         one
+       end
+       ''', {:fn, [], [{:->, [depth: 0], [[{:one, [], Elixir}], {:one, [], Elixir}]}]}},
       {~s'''
        fn(one) ->
          one