webpacker_gemfile_entry

# File railties/lib/rails/generators/app_base.rb, line 313
      def webpacker_gemfile_entry
        return [] if options[:skip_javascript]

        if options.dev? || options.edge?
          GemfileEntry.github "webpacker", "rails/webpacker", nil, "Use development version of Webpacker"
        else
          GemfileEntry.version "webpacker", "~> 4.0", "Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker"
        end
      end