SimpleComponentWithAlert_v3.jsx

class SimpleComponentWithAlert extends React.Component {
  render() {
    const myAlert = { message: "This is my alert", type: "error" };
    return (
      <AlertManager>
        {({ alert, showAlert }) => (
          <div>
            {alert && <FancyAlertMessage alert={alert} />}
            <button onClick={() => showAlert(myAlert)}>Show Alert</button>
          </div>
        )}
      </AlertManager>
    );
  }
}