The App component is the top level component of the application and all other components are wrapped by it.

App.jsx

class App extends React.Component {

  // Encapsulate 'appData' context as props for all children
  renderChildrenWithContextAsProps() {
      return React.Children.map(this.props.children, (child) => {
          return React.cloneElement(child, {
              appData: this.context.appData
          });
      });
  };

  render() {
    return (
      <div>
        {this.renderChildrenWithContextAsProps()}
      </div>
    );
  }
}

App.contextTypes = {
  appData: React.PropTypes.object.isRequired
};