Use the Class.constructor? in several more places.

require 'jsduck/class'

module JsDuck

  # Expands class docset into one or more docsets.

      if docset[:code]

        (docset[:code][:members] || []).each do |m|

          results << code_to_docset(m) unless @constructor_found && m[:name] == "constructor"

          results << code_to_docset(m) unless @constructor_found && JsDuck::Class.constructor?(m)

        end

      end

      # If methods list contains constructor, move it into the beginning.

      def constructor_first(ms)

        constr = ms.find {|m| m[:name] == "constructor" }

        constr = ms.find {|m| JsDuck::Class.constructor?(m) }

        if constr

          ms.delete(constr)

          ms.unshift(constr)