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.
return this.props.children;
          }
        }
        function App(props) {
          return (
            <Provider foo={props.foo} bar={props.bar}>
              <Indirection>
                <Indirection>
                  <Foo />
                </Indirection>
                <Indirection>
                  <Bar />
                </Indirection>
              </Indirection>
            </Provider>
          );
        }
        ReactNoop.render(<App foo={1} bar={1} />);
        expect(Scheduler).toFlushAndYield(['Foo', 'Bar']);
        expect(ReactNoop.getChildren()).toEqual([
          span('Foo: 1'),
          span('Bar: 1'),
        ]);
        
        ReactNoop.render(<App foo={2} bar={1} />);
        expect(Scheduler).toFlushAndYield(['Foo']);
        expect(ReactNoop.getChildren()).toEqual([
          span('Foo: 2'),