jest.config.js

const nextJest = require('next/jest')

const createJestConfig = nextJest({
  // Provide the path to your Next.js app to load next.config.js and .env files
  dir: './',
})

// Add any custom config to be passed to Jest
const customJestConfig = {
  setupFilesAfterEnv: ['<rootDir>/jest.setup.js'],
  moduleNameMapper: {
    // Handle module aliases
    '^@/(.*)$': '<rootDir>/$1',
  },
  moduleDirectories: ['node_modules', '<rootDir>/'],
  testEnvironment: 'jest-environment-jsdom',
  collectCoverageFrom: [
    'components/**/*.{js,jsx,ts,tsx}',
    'hooks/**/*.{js,jsx,ts,tsx}',
    'lib/**/*.{js,jsx,ts,tsx}',
    '!**/*.d.ts',
    '!**/node_modules/**',
  ],
  testPathIgnorePatterns: [
    '<rootDir>/.next/',
    '<rootDir>/node_modules/',
  ],
}

module.exports = async () => {
  const config = await createJestConfig(customJestConfig)()
  return {
    ...config,
    moduleNameMapper: {
      '^@/(.*)$': '<rootDir>/$1',
      ...(config.moduleNameMapper || {}),
    },
  }
}