It wouldn't work with Typescript, but this is what my vanilla CoffeeScript React code looks like:

    div
      className: 'navbar-form'
      style: 
        backgroundColor: "green"
      ,
      div
        className: 'btn-group'
        ,
        button
          type: 'button'
          className: 'btn btn-warning'
          onClick: @handleDecreaseWpmClick
          ,
          span
            className: 'glyphicon glyphicon-chevron-down'
        span
          className: 'btn btn-default disabled'
          ,
          "#{ @props.status.get('wpm') }"
          span
            className: 'hidden-xs'
            ,
            " wpm"
        button
          type: 'button'
          className: 'btn btn-warning'
          onClick: @handleIncreaseWpmClick
          ,
          span
            className: 'glyphicon glyphicon-chevron-up'

(For the curious, "wpm" is short for "words per minute" - this is straight out of my code for http://splashreaderapp.com. More code at http://github.com/rattrayalex/splashreaderapp)