module SewingKit
  module Webpack
    class Dev
      attr_accessor :pid

      def start
        @pid = spawn
        detach
      end

      private

      def spawn
        Kernel.spawn(
          {
            'NODE_ENV' => 'development',
            'BLUEBIRD_DEBUG' => 0,
            'BLUEBIRD_LONG_STACK_TRACES' => 0,
          },
          'node_modules/.bin/sewing-kit',
          'dev',
          chdir: Rails.root.to_s,
          out: $stdout,
          err: $stderr,
        ) || exit(1)
      end

      def detach
        Process.detach pid
      end
    end
  end
end