jest.config.js

export default {
  preset: 'ts-jest',
  testEnvironment: 'node',
  roots: ['<rootDir>/tests'],
  testMatch: ['**/__tests__/**/*.test.ts', '**/?(*.)+(spec|test).ts'],
  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
  extensionsToTreatAsEsm: ['.ts'],
  moduleNameMapper: {
    '^(\\.{1,2}/.*)\\.js$': '$1',
  },
  transform: {
    '^.+\\.tsx?$': [
      'ts-jest',
      {
        useESM: true,
        tsconfig: {
          esModuleInterop: true,
          allowSyntheticDefaultImports: true,
        },
      },
    ],
  },
  collectCoverageFrom: [
    'src/**/*.ts',
    '!src/**/*.d.ts',
    '!src/index.ts',
  ],
  coverageThreshold: {
    global: {
      branches: 50,
      functions: 50,
      lines: 50,
      statements: 50,
    },
  },
};