import '@testing-library/jest-dom'; import { defaultFallbackInView } from 'react-intersection-observer'; defaultFallbackInView(true); Object.defineProperty(window, 'matchMedia', { writable: true, value: jest.fn().mockImplementation((query) => ({ matches: false, media: query, onchange: null, addListener: jest.fn(), // Deprecated removeListener: jest.fn(), // Deprecated addEventListener: jest.fn(), removeEventListener: jest.fn(), dispatchEvent: jest.fn(), })), });