jest.config.js

/** @type {import('ts-jest').JestConfigWithTsJest} */
export default {
  preset: 'ts-jest/presets/default-esm',
  testPathIgnorePatterns: [
    '<rootDir>/__tests__/config/*',
    '<rootDir>/__tests__/browser/*',
  ],
  globalSetup: '<rootDir>/__tests__/config/setup.test.ts',
  globalTeardown: '<rootDir>/__tests__/config/teardown.test.ts',
  collectCoverage: true,
  coverageDirectory: 'coverage',
  collectCoverageFrom: ['src/**/*.ts', 'src/**/**/*.ts', '!src/**/*.d.ts'],
  coverageThreshold: {
    global: {
      branches: 80,
      functions: 80,
      lines: 80,
    },
    './src/index.ts': {
      statements: 100,
    },
  },
  testEnvironment: 'node',
  extensionsToTreatAsEsm: ['.ts'],
  moduleNameMapper: {
    '^(\\.{1,2}/.*)\\.js$': '$1',
    '^(\\.{1,2}/.*)\\.ts$': '$1',
  },
  transform: {
    '^.+\\.tsx?$': [
      'ts-jest',
      {
        useESM: true,
        tsconfig: 'tsconfig.test.json',
        isolatedModules: true,
        diagnostics: {
          ignoreCodes: ['TS151001'],
        },
      },
    ],
  },
  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
  testMatch: ['**/__tests__/**/*.test.ts'],
  verbose: true,
  setupFilesAfterEnv: ['jest-extended'],
};