chore(types): add Flow typing 🔥 ⚡ 🐸

[mpsq]

No description provided.

[blockfred]

build works 👌 - i get an error running storybook though:

$ yarn start
yarn run v1.10.1
$ start-storybook -p 6006
info @storybook/react v3.4.11
info
info => Loading custom .babelrc
info => Loading custom addons config.
info => Loading custom webpack config (extending mode).
webpack built 58f09192c00ec66c1e5b in 33546ms
Hash: 58f09192c00ec66c1e5b
Version: webpack 3.12.0
Time: 33546ms
                       Asset       Size  Chunks                    Chunk Names
    static/preview.bundle.js    6.37 MB       0  [emitted]  [big]  preview
    static/manager.bundle.js    2.95 MB       1  [emitted]  [big]  manager
static/preview.bundle.js.map    5.47 MB       0  [emitted]         preview
static/manager.bundle.js.map    3.61 MB       1  [emitted]         manager
                  index.html    1.21 kB          [emitted]
                 iframe.html  917 bytes          [emitted]
   [0] ./node_modules/react/index.js 190 bytes {0} {1} [built]
  [12] (webpack)/buildin/harmony-module.js 596 bytes {0} [built]
  [14] ./node_modules/@storybook/react/dist/client/index.js 1.79 kB {0} [built]
 [254] ./node_modules/@storybook/react/dist/server/config/polyfills.js 113 bytes {0} {1} [built]
 [677] multi ./node_modules/@storybook/react/dist/server/config/polyfills.js ./.storybook/addons.js ./node_modules/@storybook/core/dist/client/manager/index.js 52 bytes {1} [built]
 [678] ./.storybook/addons.js 133 bytes {1} [built]
 [711] ./node_modules/@storybook/core/dist/client/manager/index.js 423 bytes {1} [built]
 [968] multi ./node_modules/@storybook/react/dist/server/config/polyfills.js ./node_modules/@storybook/react/dist/server/config/globals.js (webpack)-hot-middleware/client.js?reload=true ./.storybook/config.js 64 bytes {0} [built]
 [969] ./node_modules/@storybook/react/dist/server/config/globals.js 105 bytes {0} [built]
 [970] (webpack)-hot-middleware/client.js?reload=true 7.77 kB {0} [built]
 [971] ./node_modules/querystring-es3/index.js 127 bytes {0} [built]
 [974] ./node_modules/strip-ansi/index.js 161 bytes {0} [built]
 [976] (webpack)-hot-middleware/client-overlay.js 2.21 kB {0} [built]
 [981] (webpack)-hot-middleware/process-update.js 4.37 kB {0} [built]
 [982] ./.storybook/config.js 834 bytes {0} [built]
    + 2954 hidden modules

ERROR in ./src/Atoms/Icons/withStyle.js
Module build failed: SyntaxError: /Users/fred/dev/blockchain/components/src/Atoms/Icons/withStyle.js: Support for the experimental syntax 'classProperties' isn't currently enabled (36:22):

  34 |   /* eslint-disable react/prefer-stateless-function */
  35 |   class WithStyle extends React.PureComponent<PropsType> {
> 36 |     static propTypes = {
     |                      ^
  37 |       selectable: PropTypes.bool,
  38 |       size: PropTypes.string,
  39 |     }

Add @babel/plugin-proposal-class-properties (https://git.io/vb4SL) to the 'plugins' section of your Babel config to enable transformation.
    at _class.raise (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:3939:15)
    at _class.expectPlugin (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:5253:18)
    at _class.parseClassProperty (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:8114:12)
    at _class.parseClassProperty (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:2270:55)
    at _class.pushClassProperty (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:8078:30)
    at _class.parseClassMemberWithIsStatic (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:8011:14)
    at _class.parseClassMember (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:7948:10)
    at _class.parseClassBody (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:7903:12)
    at _class.parseClass (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:7853:10)
    at _class.parseStatementContent (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:7181:21)
    at _class.parseStatement (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:7153:17)
    at _class.parseStatement (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:1902:57)
    at _class.parseBlockOrModuleBlockBody (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:7707:23)
    at _class.parseBlockBody (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:7694:10)
    at _class.parseBlock (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:7683:10)
    at _class.parseFunctionBody (/Users/fred/dev/blockchain/components/node_modules/@babel/parser/lib/index.js:6933:24)
 @ ./src/Atoms/Icons/custom/bitcoin-cash.js 3:0-37
 @ ./src/Atoms/Icons/custom/index.js
 @ ./src/Atoms/Icons/index.js
 @ ./src/Atoms/Icons/custom.stories.js
 @ ./src stories\.js$
 @ ./.storybook/config.js
 @ multi ./node_modules/@storybook/react/dist/server/config/polyfills.js ./node_modules/@storybook/react/dist/server/config/globals.js (webpack)-hot-middleware/client.js?reload=true ./.storybook/config.js

[mpsq]

fixed