facebook/react · error

measureInstance is not implemented

Error message

measureInstance is not implemented

What it means

Error "measureInstance is not implemented" thrown in facebook/react.

Source

Thrown at packages/react-native-renderer/src/ReactFiberConfigFabricWithViewTransition.js:112

  if (__DEV__) {
    console.warn('cloneRootViewTransitionContainer is not implemented');
  }
  // $FlowFixMe[incompatible-type] Return empty stub
  return null;
}

export function removeRootViewTransitionClone(
  rootContainer: Container,
  clone: Instance,
): void {
  if (__DEV__) {
    console.warn('removeRootViewTransitionClone is not implemented');
  }
}

export function measureInstance(instance: Instance): InstanceMeasurement {
  if (__DEV__) {
    console.warn('measureInstance is not implemented');
  }
  return {
    rect: {
      x: 0,
      y: 0,
      width: 0,
      height: 0,
    },
    abs: false,
    clip: false,
    // TODO: properly calculate whether instance is in viewport
    view: true,
  };
}

export function measureClonedInstance(instance: Instance): InstanceMeasurement {
  if (__DEV__) {
    console.warn('measureClonedInstance is not implemented');

View on GitHub (pinned to eafeac097b)

When it happens

Trigger: Thrown at packages/react-native-renderer/src/ReactFiberConfigFabricWithViewTransition.js:112 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/8d601257aff4f12a. Report an issue: GitHub.