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 React from 'react';
import Immutable from 'immutable';
const set = new Set(['abc', 123]);
const map = new Map([['name', 'Brian'], ['food', 'sushi']]);
const setOfSets = new Set([new Set(['a', 'b', 'c']), new Set([1, 2, 3])]);
const mapOfMaps = new Map([['first', map], ['second', map]]);
const typedArray = Int8Array.from([100, -100, 0]);
const immutable = Immutable.fromJS({
  a: [{hello: 'there'}, 'fixed', true],
  b: 123,
  c: {
    '1': 'xyz',
    xyz: 1,
  },
});
export default function UnserializableProps() {