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Zustand · Pipe

merge

Zustand updates state immutably. set merges returned fields at the top level, while nested objects need explicit spreading; a true replace flag replaces the whole state.

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Syntax

set(partial, replace?)

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  • Updating nested state object values
  • Updating state
  • set function
  • React useState

Source: Immutable state and merging - Zustand Docs. Checked 2026-11-03.