support for the experimental syntax 'classProperties' isn't currently enabled

[minusplusminus]

Hi, I have the issue when using react-app-rewired 2.1.1 I was wondering if this could be fixed when added as an deps directly?

`./node_modules/react-autosuggest-geocoder/src/geocoder.js
SyntaxError: /Users/martijnmellema/Documents/Development/Projecten/Creask/creask-web/node_modules/react-autosuggest-geocoder/src/geocoder.js: Support for the experimental syntax 'classProperties' isn't currently enabled (8:20):

6 |
7 | export class ReactAutosuggestGeocoder extends React.Component {

8 | static propTypes = {
| ^
9 | url: React.PropTypes.string.isRequired,
10 | sources: React.PropTypes.string.isRequired,
11 | apiKey: React.PropTypes.string.isRequired,

Add @babel/plugin-proposal-class-properties (https://git.io/vb4SL) to the 'plugins' section of your Babel config to enable transformation.
`