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quality
demo-startup/saas-mvp
Critical security vulnerabilities and missing production safeguards detected. SQL injection risk, exposed secrets, and no rate limiting make this unsafe for production deployment.
Summary
Code maintainability issues detected. A single 5,000+ line file handles all business logic, making bugs difficult to trace and features risky to add. Duplicated validation logic across 12 files creates inconsistency risk.
Issues Found (2)
Monolithic 5,000-Line Business Logic File
HIGHservices/business-logic.ts
Description
The file `services/business-logic.ts` contains 5,247 lines of code handling user management, payments, notifications, analytics, and more. This violates single responsibility principle and makes the codebase unmaintainable.
Business Impact
HIGH: Any change risks breaking unrelated features. Onboarding new developers takes weeks. Adding features becomes increasingly risky.
Recommendation
Refactor into smaller, focused services: UserService, PaymentService, NotificationService, etc. Each should be under 300 lines.
Safe Fix Guidelines
Create new service files and move related functions incrementally. Add tests for each service before moving code.
Duplicated Validation Logic Across 12 Files
MEDIUMMultiple files
Description
Email validation, password strength checks, and phone number formatting are copy-pasted across 12 different files with slight variations. This creates inconsistency and makes updates error-prone.
Business Impact
MEDIUM: Different parts of the app validate data differently, leading to confusing user experiences and potential security gaps.
Recommendation
Create a shared `validators.ts` module with reusable validation functions. Import and use across all files.
Safe Fix Guidelines
Extract validation to lib/validators.ts. Replace duplicates incrementally and test each replacement.
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