State Management · Senior · Question 65 of 75

Why does React Redux implement `useSelector` on top of `useSyncExternalStoreWithSelector`?

✓Correct answer: To subscribe to the external store safely in concurrent rendering and re-render only when the selected value changes
2To make reducers asynchronous
3To avoid using Context at all

Explanation

The selector runs on every store change, and the result is compared (by === or a custom equality) before React schedules a render.

Further reading

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