Jest

Create jest.config.ts in your project root:

import type { Config } from 'jest';
import baseConfig from '@presencelearning/frontend-config/jest';

export default {
  ...baseConfig,
  // Customize module name mappings for your project
  moduleNameMapper: {
    ...baseConfig.moduleNameMapper,
    '@my-alias/(.*)': '<rootDir>/src/my-path/$1',
  },
} satisfies Config;

Features

• jest-preset-angular configuration
• MSW (Mock Service Worker) compatible
• Coverage reporting to test-results/unit-coverage
• ESM module transformation support

Migration from existing Jest config

1. Backup your jest.config.js
2. Create new jest.config.ts importing the base config
3. Copy custom moduleNameMapper entries
4. Remove redundant settings (already in base config)

Troubleshooting

Jest can’t resolve path aliases

Update moduleNameMapper in your jest.config.ts to match your tsconfig.json paths.