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_
/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow
 */
import type {InspectedElementPayload} from 'react-devtools-shared/src/backend/types';
import type {DehydratedData} from 'react-devtools-shared/src/devtools/views/Components/types';
import type {FrontendBridge} from 'react-devtools-shared/src/bridge';
import type Store from 'react-devtools-shared/src/devtools/store';
describe('InspectedElementContext', () => {
  let React;
  let ReactDOM;
  let hydrate;
  let meta;
  let bridge: FrontendBridge;
  let store: Store;
  const act = (callback: Function) => {
    callback();
    jest.runAllTimers(); 
  };
  function dehydrateHelper(