Function findEventHandlerFromFiber

src/fire-event.ts:94–113

(fiber: Fiber | null, eventName: string)

}

function findEventHandlerFromFiber(fiber: Fiber | null, eventName: string): EventHandler | null {
  // Container fibers have memoizedProps set to null
  if (!fiber?.memoizedProps) {
    return null;
  }

  const handler = getEventHandlerFromProps(fiber.memoizedProps, eventName, {
    loose: true,
  });
  if (handler) {
    return handler;
  }

  // No parent fiber or we reached another host element
  if (fiber.return === null || typeof fiber.return.type === 'string') {
    return null;
  }

  return findEventHandlerFromFiber(fiber.return, eventName);
}

// String union type of keys of T that start with on, stripped of 'on'
type EventNameExtractor<T> = keyof {