SlowInititialization.js

export default class CounterApp extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      timeThen: ...,
      timeNow: Date.now()
    };
    this.someAction = this.someAction.bind(this);
    this.anotherAction = this.anotherAction.bind(this);
    this.yetAnotherAction = this.yetAnotherAction.bind(this);
  }

  someAction() { /* some action */ }
  anotherAction() { /* another action */ }
  yetAnotherAction() { /* yet another action */ }

  render() {
    return (<div>
      {this.state.timeThen > this.state.timeNow ? (
        <>
          <button onClick={this.someAction} />
          <button onClick={this.anotherAction} />
        </>
      ) : (
        <button onClick={this.yetAnotherAction} />
      )}</div>);
  }
}