List the three commit-phase lifecycle methods of a class component in order, plus what each one is used for. Show a <Clock> that starts and stops a timer.

What problem does getSnapshotBeforeUpdate solve that componentDidUpdate alone cannot? Show a chat-window example.

Why is setState asynchronous? What happens when you call this.setState({ count: this.state.count + 1 }) three times in a row inside a click handler?

What is the common mistake with getDerivedStateFromProps, and what should you usually do instead?