facebook/react · error

This synthetic event is reused for performance reasons. If y

Error message

This synthetic event is reused for performance reasons. If you're seeing this, you're %s `%s` on a released/nullified synthetic event. %s. If you must keep the original synthetic event around, use event.persist(). See https://react.dev/link/event-pooling for more information.

What it means

Error "This synthetic event is reused for performance reasons. If you're seeing this, you're %s `%s` on a released/nullified synthetic event. %s. If you must keep the original synthetic event around, use event.persist(). See https://react.dev/link/event-pooling for more information." thrown in facebook/react.

Source

Thrown at packages/react-native-renderer/src/legacy-events/SyntheticEvent.js:296

    const action = isFunction ? 'setting the method' : 'setting the property';
    warn(action, 'This is effectively a no-op');
    return val;
  }

  function get() {
    const action = isFunction
      ? 'accessing the method'
      : 'accessing the property';
    const result = isFunction
      ? 'This is a no-op function'
      : 'This is set to null';
    warn(action, result);
    return getVal;
  }

  function warn(action, result) {
    if (__DEV__) {
      console.error(
        "This synthetic event is reused for performance reasons. If you're seeing this, " +
          "you're %s `%s` on a released/nullified synthetic event. %s. " +
          'If you must keep the original synthetic event around, use event.persist(). ' +
          'See https://react.dev/link/event-pooling for more information.',
        action,
        propName,
        result,
      );
    }
  }
  const isFunction = typeof getVal === 'function';
  return {
    configurable: true,
    set: set,
    get: get,
  };
}

View on GitHub (pinned to eafeac097b)

When it happens

Trigger: Thrown at packages/react-native-renderer/src/legacy-events/SyntheticEvent.js:296 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/d528eb3f64411ae4. Report an issue: GitHub.