lib/sprockets/sass_compressor.rb in sprockets-3.7.5 vs lib/sprockets/sass_compressor.rb in sprockets-4.0.0.beta1

@@ -1,7 +1,8 @@
 require 'sprockets/autoload'
 require 'sprockets/digest_utils'
+require 'sprockets/source_map_utils'
 
 module Sprockets
   # Public: Sass CSS minifier.
   #
   # To accept the default options
@@ -43,9 +44,21 @@
       }.merge(options).freeze
       @cache_key = "#{self.class.name}:#{Autoload::Sass::VERSION}:#{VERSION}:#{DigestUtils.digest(options)}".freeze
     end
 
     def call(input)
-      Autoload::Sass::Engine.new(input[:data], @options).render
+      css, map = Autoload::Sass::Engine.new(
+        input[:data],
+        @options.merge(filename: 'filename')
+      ).render_with_sourcemap('')
+
+      css = css.sub("/*# sourceMappingURL= */\n", '')
+
+      map = SourceMapUtils.combine_source_maps(
+        input[:metadata][:map],
+        SourceMapUtils.decode_json_source_map(map.to_json(css_uri: 'uri'))["mappings"]
+      )
+
+      { data: css, map: map }
     end
   end
 end