module.exports = { preset: 'ts-jest', testEnvironment: 'jsdom', roots: [''], moduleDirectories: ['node_modules', 'js'], moduleNameMapper: { '^@/(.*)$': '/js/$1', '\.scss$': 'identity-obj-proxy', // Mock SCSS files }, transform: { '^.+\.(ts|tsx)$': 'ts-jest', '^.+\.(js|jsx)$': 'babel-jest', // Add babel-jest for JS/JSX files if needed }, };