Component error catching

onErrorCaptured() captures errors that bubble up from subcomponents.

onErrorCaptured((err) => {
  console.error(err);
  return false;
});

Returning false means preventing upward bubbling.

Usage scenarios

• local error message
• Show fallback after subcomponent fails
• Prevent errors from polluting the entire page

If you need the full fallback/retry structure, error bounds can be used.