npm-chatbot/jest.config.js at master · RumenDamyanov/npm-chatbot · GitHub

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/** @type {import('jest').Config} */
module.exports = {
  preset: 'ts-jest',
  testEnvironment: 'node',

  // Test file patterns
  roots: ['<rootDir>/tests'],
  testMatch: [
    '**/__tests__/**/*.test.ts',
    '**/__tests__/**/*.spec.ts',
    '**/tests/**/*.test.ts',
    '**/tests/**/*.spec.ts'
  ],
  testPathIgnorePatterns: [
    '<rootDir>/node_modules/',
    '<rootDir>/dist/',
    '<rootDir>/coverage/'
  ],

  // TypeScript transformation
  transform: {
    '^.+\\.tsx?$': ['ts-jest', {
      tsconfig: 'tsconfig.lint.json'
    }]
  },

  // Module resolution
  moduleNameMapper: {
    '^@/(.*)$': '<rootDir>/src/$1',
    '^@/types/(.*)$': '<rootDir>/src/types/$1',
    '^@/core/(.*)$': '<rootDir>/src/core/$1',
    '^@/providers/(.*)$': '<rootDir>/src/providers/$1',
    '^@/utils/(.*)$': '<rootDir>/src/utils/$1'
  },

  // Coverage configuration
  collectCoverageFrom: [
    'src/**/*.ts',
    '!src/**/*.d.ts',
    '!src/**/*.test.ts',
    '!src/**/*.spec.ts',
    '!src/**/index.ts',
    '!src/utils/RateLimiter.ts',  // Excluded: causes test hangs, needs refactoring
    '!tests/**/*'
  ],
  coverageDirectory: 'coverage',
  coverageReporters: [
    'text',
    'text-summary',
    'lcov',
    'html',
    'json'
  ],
  coverageThreshold: {
    global: {
      branches: 70,
      functions: 90,
      lines: 80,
      statements: 80
    }
  },

  // Test environment
  testTimeout: 10000,
  verbose: false,
  detectOpenHandles: false,
  detectLeaks: false,

  // Setup files
  setupFilesAfterEnv: ['<rootDir>/tests/setup.ts'],

  // Error handling
  errorOnDeprecated: true,

  // Performance
  maxWorkers: '50%',

  // Reporter configuration
  reporters: [
    'default',
    ['jest-junit', {
      outputDirectory: 'coverage',
      outputName: 'junit.xml'
    }]
  ]
};