A simple class component holding a static reference

cache-invalidation-class.js

class MyExpensiveComponent extends React.Component {
  myExpensiveField = null;
  
  componentDidMount() {
    this.myExpensiveField = createExpensiveField(this.props);
  }

  render() {
    return <div>this.myExpensiveField.data</div>
  }
}