Clean Architecture in TypeScript: Decoupling Business Logic from Frameworks
How to structure business logic into framework-agnostic domain entities and use cases that survive framework migrations and database swaps.
Tying your core business logic directly into framework-specific controllers or ORM models creates massive technical debt. If you ever need to change frameworks or run logic in a background worker, you are forced into painful rewrites.
1. The Dependency Inversion Principle
High-level business rules should never depend on low-level database queries or HTTP libraries. Both should depend on abstract interfaces defined by the core domain.
Summary & Key Conclusion
Decoupled domain architecture keeps software agile, maintainable, and thoroughly testable over years of iteration.
Written by Nazmul Hawlader
Top RatedSenior Full-Stack Engineer & Official Shopify App Store developer. Founder of Stockly and Kilo (kilo.nazmulcodes.org), specializing in high-performance Shopify apps, client-side media compression, and sub-second web performance.