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.
Scheduler.unstable_yieldValue('Provider');
          return (
            <Context.Provider value={props.value}>
              {props.children}
            </Context.Provider>
          );
        }
        function Consumer(props) {
          Scheduler.unstable_yieldValue('Consumer');
          return (
            <ContextConsumer>
              {value => {
                Scheduler.unstable_yieldValue('Consumer render prop');
                return <span prop={'Result: ' + value} />;
              }}
            </ContextConsumer>
          );
        }
        class Indirection extends React.Component {
          shouldComponentUpdate() {
            return false;
          }
          render() {