Static Properties on Components

example.jsx

// old way
class TestComponent extends React.Component {
  render() {
    return <h1>{this.props.header}</h1>
  }
}

TestComponent.defaultProps = {
  header: 'hello',
};

TestComponent.propTypes = {
  header: React.PropTypes.string,
};

// new way
class TestComponent extends React.Component {
  static defaultProps = {
    header: 'hello',
  }
  static propTypes = {
    header: React.PropTypes.string,
  }
  render() {
    return <h1>{this.props.header}</h1>
  }
}

Looks good!