jest.config.mjs

export default {
  preset: 'ts-jest/presets/default-esm',
  testEnvironment: 'jsdom',
  testEnvironmentOptions: {
    customExportConditions: ['node', 'node-addons'],
  },
  extensionsToTreatAsEsm: ['.ts', '.tsx'],
  roots: ['<rootDir>'],
  testMatch: ['**/*.test.ts', '**/*.test.tsx'],
  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'mjs'],
  setupFiles: ['<rootDir>/test/jest-globals.ts'],
  setupFilesAfterEnv: ['<rootDir>/test/setup.ts'],
  collectCoverageFrom: [
    '**/*.{ts,tsx}',
    '!**/*.d.ts',
    '!**/node_modules/**',
    '!**/test/**',
  ],
  transform: {
    '^.+\\.tsx?$': ['ts-jest', {
      useESM: true,
      tsconfig: {
        jsx: 'react',
        esModuleInterop: true,
        module: 'ESNext',
        moduleResolution: 'bundler',
      },
    }],
  },
  moduleNameMapper: {
    '^(\\.{1,2}/.*)\\.js$': '$1',
    '\\.(css|less|scss|sass)$': '<rootDir>/test/mocks/style-mock.ts',
  },
}