remove gem sass dependency due deprecating

Author: mkhairi

jquery-datatables.gemspec

@@ -18,7 +18,6 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
 
-  spec.add_runtime_dependency 'sass', '>= 3.5.2'
   spec.add_runtime_dependency 'autoprefixer-rails', '>= 6.0.3'
 
   spec.add_development_dependency 'jquery-rails', '~> 3.1'

lib/jquery-datatables.rb

@@ -12,9 +12,10 @@ def load!
           register_hanami
         elsif sprockets?
           register_sprockets
+        elsif defined?(::Sass) && ::Sass.respond_to?(:load_paths)
+          # The deprecated `sass` gem:
+          ::Sass.load_paths << stylesheets_path
         end
-
-        configure_sass
       end
 
       # Paths
@@ -49,12 +50,6 @@ def hanami?
 
       private
 
-      def configure_sass
-        require 'sass'
-
-        ::Sass.load_paths << stylesheets_path
-      end
-
       def register_rails_engine
         require 'jquery-datatables/engine'
       end