Using the included render function is very similar to the one used in react-dom, however it accepts the additional parameter of store:

import {
  render
} from 'arco';

import App from 'components/App';
import store from 'constants/store';

render((
  <App/>
), document.body, store);

Internally, the Component is wrapped with the Provider in react-redux so that the store is automatically available. One additional thing to note is that unlike in standard react, document.body is a valid HTML element to render to.