setup-node/jest.config.js

export default {
  clearMocks: true,
  moduleFileExtensions: ['js', 'ts'],
  testEnvironment: 'node',
  testMatch: ['**/*.test.ts'],
  testRunner: 'jest-circus/runner',
  extensionsToTreatAsEsm: ['.ts'],
  transform: {
    '^.+\\.ts$': ['ts-jest', {
      useESM: true,
      tsconfig: {
        module: 'es2022',
        target: 'es2022'
      }
    }]
  },
  preset: 'ts-jest/presets/default-esm',
  moduleNameMapper: {
    '^(\\.{1,2}/.*)\\.js$': '$1'
  },
  transformIgnorePatterns: [
    'node_modules/(?!(node-fetch|fetch-blob|formdata-polyfill|data-uri-to-buffer)/)'
  ],
  verbose: true
}