jest.config.js

export default {
  preset: 'ts-jest/presets/default-esm',
  extensionsToTreatAsEsm: ['.ts'],
  testEnvironment: 'node',
  roots: ['<rootDir>/src', '<rootDir>/test'],
  testMatch: ['**/__tests__/**/*.ts', '**/?(*.)+(spec|test).ts'],
  transform: {
    '^.+\\.ts$': [
      'ts-jest',
      {
        useESM: true,
      },
    ],
  },
  moduleNameMapper: {
    '^(\\.{1,2}/.*)\\.js$': '$1',
  },
  transformIgnorePatterns: ['node_modules/(?!(nanoid)/)'],
  collectCoverageFrom: [
    'src/**/*.ts',
    '!src/**/*.d.ts',
    '!src/**/*.test.ts',
    '!src/**/*.spec.ts',
    '!src/__mocks__/**',
    '!src/examples/**',
    '!src/integration-tests/**',
  ],
  coverageDirectory: 'coverage',
  coverageReporters: ['text', 'lcov', 'html'],
}