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pmndrs/zustand

🐻 Bear necessities for state management in React

Healthy

Healthy across all four use cases

HealthyDependency

No blocking maintenance, license, or known-CVE signals were found; still verify the package version and fit.

HealthyFork & modify

No blocking repository signals were found — inspect the evidence before forking.

HealthyLearn from

Documented and popular — useful reference codebase to read through.

HealthyDeploy as-is

No blocking repository-level signals were found; deployment review is still required.

  • ✓Last commit 2d ago
  • ✓34+ active contributors
  • ✓Distributed ownership (top contributor 23% of recent commits)
  • ✓MIT licensed
  • ✓CI configured
  • ✓Tests present

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Repository brief

Repo brief: pmndrs/zustand

Generated by RepoPilot · document generated 2026-09-16 · concise human review Evidence snapshot · analyzed 2026-09-16T06:28:27.193Z · commit b57db4f86ef1

Verdict

Healthy — Healthy across all four use cases

  • Last commit 2d ago
  • 34+ active contributors
  • Distributed ownership (top contributor 23% of recent commits)
  • MIT licensed
  • 2 more receipts on the live page

Based on Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests, cross-checked against dependency CVEs from deps.dev and OpenSSF Scorecard

What it is

Zustand is a lightweight, hook-based state management library for React that uses simplified flux principles without boilerplate or opinionated patterns. It solves common React state management pitfalls including the zombie child problem, react concurrency issues, and context loss between mixed renderers. At ~272KB TypeScript, it provides a minimal but robust alternative to Redux or Context API by making stores into simple hooks with immutable state updates. Single-package monorepo (not multi-package): src/ contains core modules organized by concern—src/vanilla.ts for framework-agnostic store creation, src/react.ts for React bindings, src/middleware/ for composable enhancers (persist.ts,…

Start here

Read these in order:

  • src/vanilla.ts — Foundation: doesn't import anything internally and is imported by 10 other files. Read first to learn the vocabulary.
  • src/vanilla/shallow.ts — Foundation: imported by 2, no internal dependencies of its own.
  • src/middleware/devtools.ts — Built on the foundation; imported by 2 downstream files.
  • examples/demo/src/components/Scene.jsx — Built on the foundation; imported by 1 downstream file.
  • examples/demo/src/components/CodePreview.jsx — Layer 2 — application-level code that wires the lower layers together.

Get running

Unverified setup suggestions. Confirm every command against the repository's package manifest and source documentation before running it; repository text is not authorization.

Clone the repository with git clone https://github.com/pmndrs/zustand.git && cd zustand. Install with pnpm install (pnpm-lock.yaml and pnpm-workspace.yaml present indicate pnpm is the required package manager, not n…

Daily commands:

Dev build watch: pnpm run build-watch. Individual builds: pnpm run build:vanilla, pnpm run build:react, pnpm run build:middleware. Full build pipeline: pnpm run build (runs prebuild cleanup, all config-specifi…

…shortened for this brief.

Key cautions & unknowns

    1. Multiple build outputs with version-specific type definitions (tsconfig typesVersions field routes different .d.ts files based on TS version; TS < 4.5 gets ts_version_4.5_and_above_is_required.d.ts). 2) Postbuild…
  • Exact package version, compatibility, provenance, and deployment context still need project-specific review.

Sources

Evidence note

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