Render upload method on react class

renderUpload.js

class Upload extends Component {
  
  
  /**
   * Renders one of [renderProgress, renderEnd, renderUnknown] depending on
   * the XMLHttpRequest.status
   * @returns {Object} Video placeholder with progress bar
   */
  get renderUpload(): React$Element<*> {
    const {getUpload} = this.props;
    const {
      status,
    } = getUpload();

    switch (status) {
      case XMLHttpRequest.LOADING:
        // in a loading state
        return this.renderProgress;
      case XMLHttpRequest.DONE:
        // upload is complete
        return this.renderEnd;
      case XMLHttpRequest.UNSENT:
      case XMLHttpRequest.OPENED:
      case XMLHttpRequest.HEADERS_RECEIVED:
      default:
        // upload has not started or status is unknown
        return this.renderUnknown;
    }
  }
}