import { JSDOM } from 'jsdom'; import Enzyme from 'enzyme'; import Adapter from 'enzyme-adapter-react-16'; Enzyme.configure({ adapter: new Adapter() }); const { window } = new JSDOM('', { userAgent: 'node.js', }); Object.keys(window).forEach(property => { if (typeof global[property] === 'undefined') { global[property] = window[property]; } });