Microapps architecture in Swift. SPM basics.
Article Summary
Majid Jabrayilov explores how to break down monolithic iOS apps into modular microapps using Swift Package Manager. The secret? Treating features as independent products that can be developed and tested in isolation.
This deep dive walks through implementing a microapps architecture in Swift, focusing on SPM as the foundation for modularization. Majid demonstrates how to structure feature modules, manage dependencies, and create a scalable architecture that keeps teams moving fast without stepping on each other's toes.
Key Takeaways
- Each feature becomes a separate SPM package with its own dependencies
- Preview apps let you develop features in isolation without building entire app
- Dependency inversion keeps modules decoupled using protocols and composition root
- SPM local packages enable modular architecture without external hosting complexity
Microapps architecture with SPM transforms monolithic iOS apps into independent, testable modules that scale with your team.
About This Article
Majid Jabrayilov noticed that monolithic Swift apps compile the entire codebase whenever anything changes, even small updates. This slows down development cycles and makes it harder for teams to stay productive on large projects.
He set up Swift Package Manager with explicit public access modifiers to break the code into isolated modules like DesignSystem. Now Xcode only compiles the modules that actually changed, leaving everything else untouched.
Teams can now develop watch apps and widgets on their own without pulling in the whole app codebase. Compilation takes less time and multiple developers can work on different targets at the same time.
