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 in your test environment
  dir: './',
});

const customJestConfig = {
  moduleNameMapper: {
    // Handle module aliases (this will be automatically configured for you soon)
    '^@/(.*)$': '<rootDir>/src/$1',
    '^__mocks__/(.*)$': '<rootDir>/__mocks__/$1',
  },
  setupFilesAfterEnv: ['./jest.setup.ts'],
  clearMocks: true,
  collectCoverage: true,
  collectCoverageFrom: [
    './src/**/*.{js,jsx,ts,tsx}',
    '!./src/**/_*.{js,jsx,ts,tsx}',
    '!./src/**/*.stories.{js,jsx,ts,tsx}',
    '!./src/components/**/index.{js,jsx,ts,tsx}',
    '!./src/app/layout.tsx',
    '!**/*.d.ts',
    '!**/node_modules/**',
  ],
  coverageThreshold: {
    global: {
      branches: 30,
      functions: 30,
      lines: 30,
      statements: 30,
    },
  },
  testEnvironment: 'jest-environment-jsdom',
};

module.exports = createJestConfig(customJestConfig);