Follow up from https://github.com/facebook/react/pull/11616.

Here's one I found. These two invariants:

https://github.com/facebook/react/blob/7e7127387ba64f57299eaff8656542cea6fb3a2d/packages/react-reconciler/src/ReactFiberClassComponent.js#L330-L343

are in a function that's behind a DEV block:

https://github.com/facebook/react/blob/7e7127387ba64f57299eaff8656542cea6fb3a2d/packages/react-reconciler/src/ReactFiberClassComponent.js#L447-L449

I don't think this is intentional, but need to verify.

There may be more. I'll use this issue to track while https://github.com/facebook/react/pull/11616 preserves existing behavior.
'%s has a method called ' +
          'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?',
        name,
      );
      const hasMutatedProps = instance.props !== workInProgress.pendingProps;
      warning(
        instance.props === undefined || !hasMutatedProps,
        '%s(...): When calling super() in `%s`, make sure to pass ' +
          "up the same props that your component's constructor was passed.",
        name,
        name,
      );
      const noInstanceDefaultProps = !instance.defaultProps;
      warning(
        noInstanceDefaultProps,
        'Setting defaultProps as an instance property on %s is not supported and will be ignored.' +
          ' Instead, define defaultProps as a static property on %s.',
        name,
        name,
      );
    }
    const state = instance.state;
    if (state && (typeof state !== 'object' || isArray(state))) {
      invariant(
        false,
        '%s.state: must be set to an object or null',
        getComponentName(workInProgress),
      );
    }
    if (typeof instance.getChildContext === 'function') {