- Replace getEnv with getEnvVar for environment variable access - Update
MailgunConfig types to allow undefined values - Enhance
isMailgunConfigured to check for undefined and empty values - Update
isDevelopmentMode to check production status - Improve test mocks for
environment variable handling
- Add Jest testing framework configuration
- Add test files for services, types, and utilities
- Update package.json with Jest dependencies and test scripts
- Enhance pre-commit checks to include testing
- Add proper environment validation and error handling in mailgun service