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.
const rand = gen.create(seed);
        let finalExpectedValues = initialValues;
        function updateRoot() {
          ReactNoop.render(
            <Root
              maxDepth={maxDepth}
              rand={rand}
              values={finalExpectedValues}
            />,
          );
        }
        updateRoot();
        actions.forEach(action => {
          switch (action.type) {
            case FLUSH_ALL:
              Scheduler.unstable_flushAllWithoutAsserting();
              break;
            case FLUSH:
              Scheduler.unstable_flushNumberOfYields(action.unitsOfWork);
              break;
            case UPDATE:
              finalExpectedValues = {
                ...finalExpectedValues,
                [action.key]: action.value,
              };
              updateRoot();
              break;
            default:
              throw new Error('Switch statement should be exhaustive');