class Sprockets::Base

def logical_paths
  return to_enum(__method__) unless block_given?
  seen = Set.new
  paths.each do |load_path|
    stat_tree(load_path).each do |filename, stat|
      next unless stat.file?
      path = split_subpath(load_path, filename)
      path, mime_type, _, _ = parse_path_extnames(path)
      path = normalize_logical_path(path)
      path += mime_types[mime_type][:extensions].first if mime_type
      if !seen.include?(path)
        yield path, filename
        seen << path
      end
    end
  end
  nil
end