This DEV-only field was added in 836331ba5f69f2cc53b273ec073fae116db14302 by @sebmarkbage but it's not being used anymore to my knowledge.
checkPropTypes(
        innerPropTypes,
        nextProps, 
        'prop',
        getComponentNameFromType(type),
      );
    }
  }
  const currentChild = ((current.child: any): Fiber); 
  if (!includesSomeLane(updateLanes, renderLanes)) {
    
    
    const prevProps = currentChild.memoizedProps;
    
    let compare = Component.compare;
    compare = compare !== null ? compare : shallowEqual;
    if (compare(prevProps, nextProps) && current.ref === workInProgress.ref) {
      return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes);
    }
  }
  
  workInProgress.flags |= PerformedWork;
  const newChild = createWorkInProgress(currentChild, nextProps);
  newChild.ref = workInProgress.ref;
  newChild.return = workInProgress;
  workInProgress.child = newChild;
  return newChild;
}
function updateSimpleMemoComponent(