long-polling React

gistfile1.coffee

      @ProgressBar = ProgressBar({ pending: file_export.completed_items, total: file_export.total_items })

      if @inProgress(file_export)
        do poll = () =>
          setTimeout (=>
            debugger
            $.ajax(
              url: '/api/v1/file_exports.json',
              success: (data) =>
                @ProgressBar.setState({ pending: data.completed_items })
              error: (data) =>
                console.log('error')

              complete: poll
            )
          ), 5000, this

      return @ProgressBar