We create many `useDebugValue` helpers, loggers and so one now, so we can feel less pain.

What matter (**Updated**)
- previewing complex values brifely like chrome devtools does it for arrays, sets, maps, objects,,,

I [wrote related twit](https://twitter.com/mxtnr/status/1178271362890240001) recently with one of my DebugValue helpers. screenshot out here:
<img width="556" alt="Screenshot 2019-09-29 at 14 01 53" src="https://user-images.githubusercontent.com/6201068/66700775-5648bf80-ecfd-11e9-93fe-089d451bcffa.png">
_my named hooks currently require a `label` option unless react babel cannot transform name of variable automatically_
static childContextTypes = {
        bool: PropTypes.bool,
      };
      getChildContext() {
        return contextData;
      }
      render() {
        return this.props.children;
      }
    }
    class LegacyContextConsumer extends React.Component<any> {
      static contextTypes = {
        bool: PropTypes.bool,
      };
      render() {
        return null;
      }
    }
    
    const BoolContext = React.createContext(contextData.bool);
    BoolContext.displayName = 'BoolContext';
    class ModernContextType extends React.Component<any> {