jest.config.ts

import type { Config } from 'jest'
import nextJest from 'next/jest.js'
 
const createJestConfig = nextJest({
  // Provide the path to your Next.js app to load next.config.js and .env files in your test environment
  dir: './',
})
 
// Add any custom config to be passed to Jest
const config: Config = {
  setupFilesAfterEnv: ['<rootDir>/src/setupTests.ts'],
  globalSetup: '<rootDir>/jest-global-setup.ts',
  testEnvironment: 'jest-environment-jsdom',
  moduleNameMapper: {
    // Handle module aliases (this will be automatically configured for you based on your tsconfig.json paths)
    '^@/(.*)$': '<rootDir>/src/$1',
  },
  testMatch: [
    '<rootDir>/src/**/__tests__/**/*.{js,jsx,ts,tsx}',
    '<rootDir>/src/**/*.{spec,test}.{js,jsx,ts,tsx}',
  ],
  collectCoverageFrom: [
    'src/**/*.{js,jsx,ts,tsx}',
    '!src/**/*.d.ts',
    '!src/**/index.{js,jsx,ts,tsx}',
    '!src/**/*.stories.{js,jsx,ts,tsx}',
  ],
  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx'],
  transformIgnorePatterns: [
    // Transform all node_modules except these specific ones that need transformation
    'node_modules/(?!(.*\\.mjs$|@mui|@babel|uuid|nanoid|countries-list|@turf|openapi-fetch|next-intl))',
  ],
}
 
// createJestConfig is exported this way to ensure that next/jest can load the Next.js config which is async
export default createJestConfig(config)