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.
if (__DEV__) {
    if (Component) {
      if (Component.childContextTypes) {
        console.error(
          '%s(...): childContextTypes cannot be defined on a function component.',
          Component.displayName || Component.name || 'Component',
        );
      }
    }
    if (workInProgress.ref !== null) {
      let info = '';
      const ownerName = getCurrentFiberOwnerNameInDevOrNull();
      if (ownerName) {
        info += '\n\nCheck the render method of `' + ownerName + '`.';
      }
      let warningKey = ownerName || workInProgress._debugID || '';
      const debugSource = workInProgress._debugSource;
      if (debugSource) {
        warningKey = debugSource.fileName + ':' + debugSource.lineNumber;
      }
      if (!didWarnAboutFunctionRefs[warningKey]) {
        didWarnAboutFunctionRefs[warningKey] = true;
        console.error(
          'Function components cannot be given refs. ' +
            'Attempts to access this ref will fail. ' +
            'Did you mean to use React.forwardRef()?%s',
          info,