Architect stateful SwiftUI ViewModels with ViewState and protocol-based UseCase injection.
npx skills add https://github.com/vjr2005/Challenge --skill viewmodel
Please help me install this Agent Skill. Skill: viewmodel Source: https://github.com/vjr2005/Challenge/tree/main/.claude/skills/viewmodel Command: npx skills add https://github.com/vjr2005/Challenge --skill viewmodel
Building and maintaining stateful ViewModels for SwiftUI apps can be verbose and error-prone. This skill provides a ready-to-use pattern to encapsulate view state, coordinate between views and use cases, and enforce testable, predictable behavior with minimal boilerplate.
Create a new ViewModel by applying the ViewState pattern and the recommended file structure for a feature.
High-intent search queries and answers about installing and using this skill.
Manage SwiftUI view state using the ViewState pattern to encapsulate idle, loading, loaded, and error states. This approach coordinates views and use cases while keeping state transitions predictable and testable with minimal boilerplate.
Structure SwiftUI ViewModels for unit testing by applying protocol-based dependency injection for UseCases, NavigatorContract, and TrackerContract. This design promotes modularity and ensures state transitions, navigation, and tracking behaviors remain fully verifiable.
Handle navigation logic by encapsulating it within a dedicated NavigatorContract component rather than the ViewModel. The ViewModel coordinates with this protocol-based contract, keeping navigation concerns modular and separate from local state management.
Yes, you can use protocol-based dependency injection for SwiftUI feature development. Injecting UseCases, NavigatorContract, and TrackerContract protocols promotes testability and modularity while coordinating view state and business logic.
Implement lifecycle methods in SwiftUI ViewModels by exposing public methods like didAppear() and didTapOnRetryButton() while keeping the actual load logic private. This structure ensures consistent naming conventions for navigation and tests.
Yes, this ViewModel pattern supports both list views and detail views in SwiftUI. It provides structured patterns for detail views with navigation and list views with optional navigation and tracking integration.
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