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/** @type {import('jest').Config} */
export default {
  preset: 'ts-jest/presets/default-esm',
  testEnvironment: 'node',
  extensionsToTreatAsEsm: ['.ts'],
  moduleNameMapper: {
    '^(\\.{1,2}/.*)\\.js$': '$1',
  },
  transform: {
    '^.+\\.tsx?$': ['ts-jest', {
      useESM: true,
      tsconfig: {
        module: 'esnext',
        target: 'esnext',
        lib: ['esnext'],
        allowJs: true,
        esModuleInterop: true,
        moduleResolution: 'node'
      }
    }],
  },
  globals: {
    'ts-jest': {
      useESM: true,
    },
  },
  testMatch: [
    '**/__tests__/**/*.test.ts',
    '**/*.test.ts'
  ],
  collectCoverageFrom: [
    'src/**/*.ts',
    '!src/**/*.d.ts',
    '!src/index.ts', // Exclude main entry point
  ],
  coverageDirectory: 'coverage',
  coverageReporters: ['text', 'lcov', 'html'],
  testTimeout: 30000, // 30 seconds for async operations
};