jest.config.js

export default {
  preset: 'ts-jest/presets/default-esm',
  testEnvironment: 'node',
  roots: ['<rootDir>/src'],
  testMatch: ['**/__tests__/**/*.test.ts', '**/?(*.)+(spec|test).ts'],
  testPathIgnorePatterns: ['/node_modules/', '/__tests__/mocks/'],
  transform: {
    '^.+\\.ts$': ['ts-jest', {
      useESM: true,
      tsconfig: {
        module: 'NodeNext',
        moduleResolution: 'NodeNext',
        allowSyntheticDefaultImports: true,
        esModuleInterop: true,
      },
    }],
  },
  moduleNameMapper: {
    '^(\\.{1,2}/.*)\\.js$': '$1',
  },
  extensionsToTreatAsEsm: ['.ts'],
  collectCoverageFrom: [
    'src/**/*.ts',
    '!src/**/*.d.ts',
    '!src/**/__tests__/**',
  ],
  transformIgnorePatterns: [
    'node_modules/(?!(@google/generative-ai)/)',
  ],
  moduleNameMapper: {
    '^(\\.{1,2}/.*)\\.js$': '$1',
  },
};