jest.config.js

export default {
  preset: 'ts-jest/presets/default-esm',
  testEnvironment: 'node',
  extensionsToTreatAsEsm: ['.ts'],
  moduleNameMapper: {
    '^(\\.{1,2}/.*)\\.js$': '$1',
  },
  transform: {
    '^.+\\.ts$': [
      'ts-jest',
      {
        useESM: true,
        isolatedModules: true,
        tsconfig: 'tsconfig.test.json',
      },
    ],
  },
  transformIgnorePatterns: [
    'node_modules/(?!(chalk|cli-table3|#ansi-styles|#supports-color)/)',
  ],
  testMatch: [
    '**/test/unit/**/*.test.ts',
    '**/test/unit/**/*.spec.ts',
  ],
  collectCoverageFrom: [
    'src/**/*.ts',
    '!src/**/*.d.ts',
    '!src/**/index.ts',
  ],
  coverageDirectory: 'test/coverage/unit',
  coverageReporters: ['text', 'lcov', 'html', 'json'],
  verbose: true,
};