Zustand quiz

Test your Zustand knowledge with a free interactive quiz — 50 questions with answers and explanations. No signup needed to play.

What size does Zustand add to the bundle?

1. What size does Zustand add to the bundle?
2. `set(partial)` vs `set(state => partial)` — what is the difference?
3. How do you read state OUTSIDE React (e.g. in a util)?
4. Does Zustand need a Provider at the React root?
5. Which selector pattern is most performant?
6. Which middleware persists state to localStorage?
7. Why is Zustand often picked over Redux Toolkit for small apps?
8. A common pattern for big stores:
9. How is a store created?
10. When using `persist`, how do you handle schema migrations?
11. How do you subscribe to a specific slice from outside React?
12. You select `(s) => ({a: s.a, b: s.b})` — what is the rendering issue?

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