@apisyouwonthate/style-guide/jest.config.js

Make your HTTP APIs better, faster, stronger, whether they are still being designed (API Design-First) or your organization has flopped various mismatched APIs into production and now you're thinking some consistency would be nice. Using Spectral and Open

module.exports = async () => {
  return {
    preset: 'ts-jest',
    testPathIgnorePatterns: ['__helpers__'],
    testEnvironment: 'node',
    globals: {
      'ts-jest': {
        useIsolatedModules: true,
      },
    },
  };
};