Ios dependency injection
Skill ComeOnOliver/skillshub/skills/HoangNguyen0403/agent-skills-standard/ios-dependency-injection
Standards for Protocol-based DI, Property Wrappers, and Factory/Needle. Use when configuring dependency injection or factory patterns in iOS. (triggers: **/*.swift, @Injected, Resolver, Container, Swinject, register, resolve)From its SKILL.md
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SKILL.md
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iOS Dependency Injection Standards
Priority: P0
Implementation Guidelines
Protocol-Based DI (Manual)
- Initializer Injection: Preferred method. Pass dependencies through
init. - Abstractions: Inject protocols instead of concrete classes to facilitate testing (Mocks/Stubs).
Modern Property Wrappers (Factory/Resolver)
- Factory: Use the
Factorylibrary for lightweight, type-safe navigation-friendly DI. - Swinject: Use for enterprise-grade container-based DI in large modular projects.
- Injected: Use
@Injectedproperty wrappers for cleaner syntax in ViewModels.
Scoping
- Singleton: Use for app-wide services (Auth, Network, Database).
- Unique/Transient: Default for ViewModels and temporary workers.
- Graph/Cached: Use for shared data within a specific feature flow (Coordinator scope).
Anti-Patterns
- No global singleton access everywhere: Inject service via initializer.
- No Resolver.resolve() inside logic: Pass dependency via constructor.
- No direct class instantiation: Depend on protocols for testability.
References
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