export const ORDER_COLUMNS = [
  { name: 'orderNumber', title: 'Order', width: '10%',  type: 'string' },
  { name: 'orderType', title: 'Type', width: '10%',  type: 'string' }
];

class OrderGridControl extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
        orderColumns: ORDER_COLUMNS
    };
  }
  ...

}

export default OrderGridControl;

import {OrderGridControl, ORDER_COLUMNS} from 'component/order-grid-control';

class OrderQueryPage extends React.Component {
      constructor(props) {
    super(props);
    this.state = {
        orderColumns: ORDER_COLUMNS
    };
    console.info(this.state.orderColumns);
  }

  ...

  render() {
    return (
      <div>
        <PropertyGrid gridSetup={this.state.orderColumns} />
      </div>
    );
  }
}

import OrderGridControl, { ORDER_COLUMNS } from 'component/order-grid-control';

import GridControl, { ORDER_COLUMNS } from 'component/order-grid-control';