import ReactJsonViewer from 'react-json-viewer-cool';

const data = {
  number: 1,
  string: 'hello',
  array: [1, 2, 3, 4],
  object: {
    key: 'oops!'
  },
  bool: true,
  null: null,
  undefined: undefined,
  function: () => {},
  error: new Error('e..'),
  regExp: /\w/g,
  date: new Date(),
  symbol: Symbol('a'),
  map: new Map(),
  set: new Set(),
  any_thing: '...'
};
function App() {
  return <ReactJsonViewer data={data} />;
}
ReactDOM.render(<App />, document.getElementById('root'));