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'],
  testEnvironment: 'jest-environment-jsdom',
  moduleNameMapper: {
    '^@/(.*)$': '<rootDir>/src/$1',
  },
  testMatch: [
    '<rootDir>/src/**/__tests__/**/*.(test|spec).(ts|tsx|js)',
    '<rootDir>/src/**/*.(test|spec).(ts|tsx|js)',
  ],
  collectCoverageFrom: [
    'src/**/*.{ts,tsx}',
    '!src/**/*.d.ts',
    '!src/app/layout.tsx',
    '!src/app/page.tsx',
  ],
  coverageDirectory: 'coverage',
  coverageReporters: ['text', 'lcov', 'html'],
}

// createJestConfig is exported this way to ensure that next/jest can load the Next.js config which is async
module.exports = createJestConfig(customJestConfig)