{"record":{"id":"3d073a5fa3de51e0","repo":"facebook/react","slug":"hasinstancechanged-is-not-implemented","errorCode":null,"errorMessage":"hasInstanceChanged is not implemented","messagePattern":"hasInstanceChanged is not implemented","errorType":"console","errorClass":null,"httpStatus":null,"severity":"error","filePath":"packages/react-native-renderer/src/ReactFiberConfigFabricWithViewTransition.js","lineNumber":151,"sourceCode":"    rect: {x: 0, y: 0, width: 0, height: 0},\n    abs: false,\n    clip: false,\n    view: true,\n  };\n}\n\nexport function wasInstanceInViewport(\n  measurement: InstanceMeasurement,\n): boolean {\n  return measurement.view;\n}\n\nexport function hasInstanceChanged(\n  oldMeasurement: InstanceMeasurement,\n  newMeasurement: InstanceMeasurement,\n): boolean {\n  if (__DEV__) {\n    console.warn('hasInstanceChanged is not implemented');\n  }\n  return false;\n}\n\nexport function hasInstanceAffectedParent(\n  oldMeasurement: InstanceMeasurement,\n  newMeasurement: InstanceMeasurement,\n): boolean {\n  if (__DEV__) {\n    console.warn('hasInstanceAffectedParent is not implemented');\n  }\n  return false;\n}\n\nexport function startGestureTransition(\n  suspendedState: null | SuspendedState,\n  rootContainer: Container,\n  timeline: GestureTimeline,","sourceCodeStart":133,"sourceCodeEnd":169,"githubUrl":"https://github.com/facebook/react/blob/eafeac097ba51e1eab809c07102126bd5f8e5425/packages/react-native-renderer/src/ReactFiberConfigFabricWithViewTransition.js#L133-L169","documentation":"Error \"hasInstanceChanged is not implemented\" thrown in facebook/react.","triggerScenarios":"Thrown at packages/react-native-renderer/src/ReactFiberConfigFabricWithViewTransition.js:151 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"eafeac097ba51e1eab809c07102126bd5f8e5425","analyzedAt":"2026-08-21T22:01:08.818Z","schemaVersion":2},"datasetVersion":"2026-08-21T23:17:16.201Z"}