jest.config.js

import nextJest from 'next/jest.js';

const createJestConfig = nextJest({
  dir: './',
});

const customJestConfig = {
  setupFilesAfterEnv: ['<rootDir>/jest.setup.js'],
  testEnvironment: 'jest-environment-jsdom',
  useESM: true,
  moduleNameMapper: {
    '^@/(.*)$': '<rootDir>/$1',
  },
  testPathIgnorePatterns: ['<rootDir>/.next/', '<rootDir>/node_modules/'],
  collectCoverageFrom: [
    'lib/**/*.{js,jsx,ts,tsx}',
    'components/**/*.{js,jsx,ts,tsx}',
    'app/**/*.{js,jsx,ts,tsx}',
    '!**/*.d.ts',
    '!**/node_modules/**',
  ],
  transform: {
    '^.+\\.(js|jsx|ts|tsx)$': [
      'ts-jest',
      {
        tsconfig: 'tsconfig.json',
      },
    ],
  },
  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json'],
  testMatch: ['**/__tests__/**/*.{{ts,tsx,js}}', '**/*.{test,spec}.{ts,tsx,js}'],
};

// createJestConfig is exported this way to ensure that next/jest can load the Next.js config which is async
export default createJestConfig(customJestConfig);