jest.config.js

module.exports = {
    preset: 'ts-jest',
    testEnvironment: 'jsdom',
    roots: ['<rootDir>/tests'],
    testMatch: ['**/__tests__/**/*.{ts,tsx}', '**/?(*.)+(spec|test).{ts,tsx}'],
    transform: {
        '^.+\\.(ts|tsx)$': ['ts-jest', {
            tsconfig: {
                jsx: 'react',
                esModuleInterop: true,
                allowSyntheticDefaultImports: true,
                types: ['jest', '@testing-library/jest-dom'],
            },
        }],
        '^.+\\.js$': ['ts-jest', {
            tsconfig: {
                allowJs: true,
            },
        }],
    },
    collectCoverageFrom: ['src/**/*.{ts,tsx}', '!src/**/*.d.ts'],
    moduleNameMapper: {
        '^@/(.*)$': '<rootDir>/src/$1',
        '\\.(css|less|scss|sass)$': 'identity-obj-proxy',
    },
    setupFilesAfterEnv: ['<rootDir>/jest.setup.js'],
    // Disable caching to ensure TypeScript type changes are always picked up
    cache: false,
};