jest.config.ts

import type { Config } from 'jest';

const config: Config = {
  preset: 'ts-jest',
  testEnvironment: 'node',
  roots: ['<rootDir>/src', '<rootDir>/tests'],
  testMatch: [
    '**/__tests__/**/*.ts',
    '**/?(*.)+(spec|test).ts'
  ],
  transform: {
    '^.+\\.ts$': ['ts-jest', {
      useESM: true,
    }],
  },
  extensionsToTreatAsEsm: ['.ts'],
  moduleFileExtensions: ['ts', 'js', 'json', 'node'],
  collectCoverage: false,
  collectCoverageFrom: [
    'src/**/*.ts',
    '!src/**/*.d.ts',
    '!src/index.ts',
    '!src/**/__tests__/**',
    '!src/**/*.test.ts',
    '!src/**/*.spec.ts',
  ],
  coverageDirectory: 'coverage',
  coverageReporters: ['text', 'lcov', 'html', 'json-summary'],
  setupFilesAfterEnv: ['<rootDir>/tests/setup.ts'],
  moduleNameMapper: {
    '^@/(.*)$': '<rootDir>/src/$1',
  },
  clearMocks: true,
  restoreMocks: true,
  verbose: true,
  testTimeout: 30000,
  maxConcurrency: 5,
  errorOnDeprecated: true,
  watchPathIgnorePatterns: [
    '<rootDir>/node_modules/',
    '<rootDir>/dist/',
    '<rootDir>/coverage/',
  ],
  transformIgnorePatterns: [
    'node_modules/(?!(chalk)/)',
  ],
};

export default config;