How would you structure a large React project's folders?
Quick answer
Group by feature, not by file type. Co-locate components, hooks, and tests; keep shared UI/utilities separate; keep routes thin.
In detail
A feature-based structure (features/auth, features/cart, each with its components/hooks/api/tests) scales better than type-based (all components in one folder). Share truly reusable pieces in a components/ui and lib/ folder. Keep business logic in hooks/services, keep components focused on rendering, and avoid deep prop drilling with context or a store where appropriate.
Why interviewers ask this: Architecture judgement matters for senior and startup roles.
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