Setups for Jest tests of CRA application to fix TypeError: window.URL.createObjectURL is not a function

setupTests.ts

// react-testing-library renders your components to document.body,
// this adds jest-dom's custom assertions
import '@testing-library/jest-dom/extend-expect';

import 'react-app-polyfill/ie11';
import 'react-app-polyfill/stable';

import 'jest-styled-components';

import { configure } from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';

// fix to TypeError: window.URL.createObjectURL is not a function
jest.mock('mapbox-gl/dist/mapbox-gl', () => ({
  GeolocateControl: jest.fn(),
  Map: jest.fn(() => ({
    addControl: jest.fn(),
    on: jest.fn(),
    remove: jest.fn(),
  })),
  NavigationControl: jest.fn(),
}));

configure({ adapter: new Adapter() });