-module(color).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function]).

-export([to_string/1]).
-export_type([color/0]).

-type color() :: white | black.

-spec to_string(color()) -> binary().
to_string(Color) ->
    case Color of
        white ->
            <<"White"/utf8>>;

        black ->
            <<"Black"/utf8>>
    end.