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Prevent rerenders with useShallow

useShallow helps prevent unnecessary React rerenders when a selector returns a new object or array whose first-level values are unchanged. It compares the computed result shallowly instead of relying only on Object.is.

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Syntax

useStore(useShallow((state) => computedValue))

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  • create
  • selector
  • Object.is
  • zustand/react/shallow
  • shallow comparison

Source: Prevent rerenders with useShallow - Zustand Docs. Checked 2026-11-03.