jest.config.js

module.exports = {
  preset: 'ts-jest',
  testEnvironment: 'node',
  roots: ['<rootDir>/tests'],
  testMatch: ['**/*.test.ts'],
  collectCoverageFrom: [
    'src/**/*.ts',
    '!src/**/*.d.ts',
    '!src/types/**',
  ],
  coverageThreshold: {
    global: {
      branches: 70,
      functions: 70,
      lines: 70,
      statements: 70,
    },
  },
  coverageDirectory: 'coverage',
  verbose: true,
  testTimeout: 30000,
  transform: {
    '^.+\\.tsx?$': [
      'ts-jest',
      {
        diagnostics: false,
      },
    ],
  },
  moduleNameMapper: {
    // Handle .js extensions in imports (common with ESM-style TypeScript)
    '^(\\.{1,2}/.*)\\.js$': '$1',
    // Handle @/ path alias if used
    '^@/(.*)$': '<rootDir>/src/$1',
  },
};