Just about every time I set up a new `Context.Provider`, I end up accidentally specifying a `values` prop rather than `value`.  While it's a minor error, generally I build the container in which the provider resides and commit it to the code base before I ever use it.  It's only later when I go to use it that I realize I did it again.  Since the `Context.Provider` seems pretty much useless without a `value` prop specified, I'd love it if there was a prop error if it is missing... especially if another prop is defined on the `Context.Provider` instead.
}
  prepareToReadContext(workInProgress, renderLanes);
  const instance = workInProgress.stateNode;
  let shouldUpdate;
  if (instance === null) {
    if (current !== null) {
      
      
      
      
      current.alternate = null;
      workInProgress.alternate = null;
      
      workInProgress.effectTag |= Placement;
    }
    
    constructClassInstance(workInProgress, Component, nextProps);
    mountClassInstance(workInProgress, Component, nextProps, renderLanes);
    shouldUpdate = true;
  } else if (current === null) {
    
    shouldUpdate = resumeMountClassInstance(
      workInProgress,
      Component,
      nextProps,
      renderLanes,
    );
  } else {
    shouldUpdate = updateClassInstance(
      current,