Himu Lingua Architecture

Refactored Himu Lingua to a cleaner layered architecture with explicit boundaries between UI, app logic, and data access.

Stack

• Language: TypeScript
• Runtime: Node.js
• Database: MongoDB

What Changed

• Separated concerns into domain, application, and infrastructure layers.
• Introduced explicit contracts between layers to reduce coupling.
• Improved testability by removing hidden side effects from core logic.
• Replaced ad-hoc data access with a consistent repository pattern.

Impact

Faster feature delivery, fewer regressions, and easier onboarding for contributors.