jest.config.cjs

module.exports = {
  preset: 'ts-jest/presets/default-esm',
  extensionsToTreatAsEsm: ['.ts'],
  testEnvironment: 'node',
  roots: ['<rootDir>/src'],
  testMatch: [
    '**/__tests__/**/*.+(ts|tsx|js)',
    '**/*.(test|spec).+(ts|tsx|js)',
  ],
  transform: {
    '^.+\\.(ts|tsx)$': ['ts-jest', {
      useESM: true
    }],
  },
  collectCoverageFrom: [
    'src/**/*.{ts,tsx}',
    '!src/**/*.d.ts',
    '!src/**/__tests__/**',
    '!src/**/index.ts',
  ],
  coverageDirectory: 'coverage',
  coverageReporters: ['text', 'lcov', 'html'],
  coverageThreshold: {
    global: {
      branches: 80,
      functions: 80,
      lines: 80,
      statements: 80,
    },
  },
  setupFilesAfterEnv: ['<rootDir>/src/test-setup.ts'],
  testPathIgnorePatterns: ['/node_modules/', '/dist/'],
  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
  verbose: true,
};