The item-sync requirement is where it gets interesting.
Start by clarifying requirements and constraints, then propose a centralized state management solution (e.g., Redux, MobX, or React Context) to ensure consistency across lists. Outline a time allocation that prioritizes core functionality and state synchronization, leaving room for testing and polish.
Pro tip: Emphasize that you'll use a single source of truth for items and derive both lists from it, which simplifies synchronization and avoids bugs. Also, mention that you'll write tests for the state logic to ensure updates propagate correctly.
Ask questions to understand the scope: Are the lists filtered views of the same data? What kind of updates? What mock API? This ensures you build the right thing.
Propose a centralized store (e.g., Redux) where items are stored by ID. Both lists select from this store, so updates automatically reflect. Discuss trade-offs of different approaches.
Outline how to fetch data from the mock API, normalize it into the store, and handle updates (e.g., optimistic updates). Ensure both lists subscribe to the same store.
Break down: 5 min setup, 15 min state management and API integration, 15 min UI for two lists, 5 min testing, 5 min buffer. Prioritize core functionality.
Mention writing unit tests for reducers/actions to verify updates propagate. Consider edge cases like concurrent updates, error handling, and loading states.
AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.