Helix Diagnostic Center - Healthcare API
Fixing a Node.js startup crash caused by mixed module systems and URI string syntax

The Challenge
Helix Diagnostic Center provides healthcare management software designed to eliminate long patient wait times, lost test results, and complex billing procedures. During backend initialization, the Node.js REST API crashed immediately on startup due to conflicting module systems and misconfigured database connection strings.
Error trace: SyntaxError: Cannot use import statement outside a module.
- •Backend application crashed immediately on boot when run with nodemon in development.
- •Impact: REST API could not start or establish a persistent connection to MongoDB Atlas.
The Solution
Migrated the entire backend service to native ES Modules and corrected MongoDB URI interpolation.
- Added 'type': 'module' configuration to package.json
- Replaced legacy CommonJS require() calls with standard ES Module imports
- Fixed MongoDB URI string interpolation using template literals
- Wrapped database connection logic in an async/await try-catch block for safe initialization


The Result
By implementing a robust and type-safe solution, the platform restored continuous deployment and enhanced core stability across production environments.
- •Backend Startup Restored: Server boots without syntax errors under Nodemon and handles API routes reliably.
- •Stable Database Connection: Established persistent async database pooling with MongoDB Atlas for patient record queries.
- •Enhanced Patient Care: Accelerated lab diagnostic processing and simplified appointment scheduling.