facebook/react · error · Error

279

279

Error message

Trying to release an event instance into a pool of a different type.

What it means

Error "Trying to release an event instance into a pool of a different type." thrown in facebook/react.

Source

Thrown at packages/react-native-renderer/src/legacy-events/SyntheticEvent.js:345

      targetInst,
      nativeEvent,
      nativeInst,
    );
    return instance;
  }
  return new EventConstructor(
    dispatchConfig,
    targetInst,
    nativeEvent,
    nativeInst,
  );
}

function releasePooledEvent(event) {
  const EventConstructor = this;

  if (!(event instanceof EventConstructor)) {
    throw new Error(
      'Trying to release an event instance into a pool of a different type.',
    );
  }

  event.destructor();
  if (EventConstructor.eventPool.length < EVENT_POOL_SIZE) {
    EventConstructor.eventPool.push(event);
  }
}

function addEventPoolingTo(EventConstructor) {
  EventConstructor.getPooled = createOrGetPooledEvent;
  EventConstructor.eventPool = [];
  EventConstructor.release = releasePooledEvent;
}

export default SyntheticEvent;

View on GitHub (pinned to eafeac097b)

When it happens

Trigger: Thrown at packages/react-native-renderer/src/legacy-events/SyntheticEvent.js:345 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of facebook/react@eafeac097b (2026-08-21). Data as JSON: /api/errors/9b5ccbee42f117e0. Report an issue: GitHub.