ReboundRenderer.js

var React = require('React');

var ReboundRenderer = React.createClass({
  propTypes: {
    boundTo: React.PropTypes.number.isRequired,
    render: React.PropTypes.func.isRequired,
  },

  shouldComponentUpdate: function(nextProps): boolean {
    return nextProps.boundTo !== this.props.boundTo;
  },

  render: function(): ReactElement<any> {
    console.log('ReboundRenderer render() boundTo=' + this.props.boundTo);
    return this.props.render(this.props.boundTo);
  },
});

module.exports = ReboundRenderer;