{"adoption": {"forks": 99, "observed_at": "2026-08-28T04:08:53.272568+00:00", "stars": 4548}, "canonical_url": "https://ross.abutalabs.com/products/use-immer", "card": {"archived": false, "artifact_type": "library", "description": "Use immer to drive state with a React hooks", "domain": ["frontend", "web-development"], "enriched": true, "function": ["state-management"], "health_score": 20, "homepage": null, "language": "TypeScript", "license": "MIT", "license_family": "permissive", "maturity": "stable", "member_repos": ["immerjs/use-immer"], "name": "immerjs/use-immer", "platform": ["browser"], "pushed_at": "2024-12-17T11:16:07+00:00", "repo": "immerjs/use-immer", "stars": 4548, "tags": ["react-hooks", "immer", "immutable-state", "typescript", "nodejs"], "topics": [], "urls": [], "use_cases": ["manage react state with immer", "update nested state without spread operators", "replace usestate with mutable draft updates", "use immer in a react reducer", "simplify immutable state updates in react components"], "what_it_is": "use-immer is a set of React hooks (useImmer, useImmerReducer) that wrap the Immer library for immutable state management. It lets you mutate a draft state directly while producing immutable next states, as a drop-in alternative to useState and useReducer.", "when_to_avoid": ["your state is simple primitives where useState suffices", "you use a state management library like redux or zustand that already integrates immer", "you are not using react"], "when_to_choose": ["you want to write state updates as direct mutations while keeping immutability", "your components have deeply nested state that is painful to update immutably", "you already use immer and want a hooks-based API"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/use-immer", "repo": "immerjs/use-immer", "role": "main", "score": 32}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:08:53.272568+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T18:20:05.902796+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b6fc985b28691ec40c78005a2a0afa65ed1778b4f7e40c9340f4ebd18f6f3296", "fetched_at": "2026-08-28T04:08:53.272568+00:00", "kind": "readme", "missing": false, "url": "https://github.com/immerjs/use-immer"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:08:53.272568+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T18:20:05.902796+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b6fc985b28691ec40c78005a2a0afa65ed1778b4f7e40c9340f4ebd18f6f3296", "fetched_at": "2026-08-28T04:08:53.272568+00:00", "kind": "readme", "missing": false, "url": "https://github.com/immerjs/use-immer"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T18:20:05.902796+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b6fc985b28691ec40c78005a2a0afa65ed1778b4f7e40c9340f4ebd18f6f3296", "fetched_at": "2026-08-28T04:08:53.272568+00:00", "kind": "readme", "missing": false, "url": "https://github.com/immerjs/use-immer"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:08:53.272568+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:08:53.272568+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:08:53.272568+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T18:20:05.902796+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b6fc985b28691ec40c78005a2a0afa65ed1778b4f7e40c9340f4ebd18f6f3296", "fetched_at": "2026-08-28T04:08:53.272568+00:00", "kind": "readme", "missing": false, "url": "https://github.com/immerjs/use-immer"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:08:53.272568+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:08:53.272568+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T18:20:05.902796+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b6fc985b28691ec40c78005a2a0afa65ed1778b4f7e40c9340f4ebd18f6f3296", "fetched_at": "2026-08-28T04:08:53.272568+00:00", "kind": "readme", "missing": false, "url": "https://github.com/immerjs/use-immer"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:08:53.272568+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:08:53.272568+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:08:53.272568+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T18:20:05.902796+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b6fc985b28691ec40c78005a2a0afa65ed1778b4f7e40c9340f4ebd18f6f3296", "fetched_at": "2026-08-28T04:08:53.272568+00:00", "kind": "readme", "missing": false, "url": "https://github.com/immerjs/use-immer"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:08:53.272568+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:08:53.272568+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T18:20:05.902796+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b6fc985b28691ec40c78005a2a0afa65ed1778b4f7e40c9340f4ebd18f6f3296", "fetched_at": "2026-08-28T04:08:53.272568+00:00", "kind": "readme", "missing": false, "url": "https://github.com/immerjs/use-immer"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T18:20:05.902796+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b6fc985b28691ec40c78005a2a0afa65ed1778b4f7e40c9340f4ebd18f6f3296", "fetched_at": "2026-08-28T04:08:53.272568+00:00", "kind": "readme", "missing": false, "url": "https://github.com/immerjs/use-immer"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T18:20:05.902796+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b6fc985b28691ec40c78005a2a0afa65ed1778b4f7e40c9340f4ebd18f6f3296", "fetched_at": "2026-08-28T04:08:53.272568+00:00", "kind": "readme", "missing": false, "url": "https://github.com/immerjs/use-immer"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T18:20:05.902796+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b6fc985b28691ec40c78005a2a0afa65ed1778b4f7e40c9340f4ebd18f6f3296", "fetched_at": "2026-08-28T04:08:53.272568+00:00", "kind": "readme", "missing": false, "url": "https://github.com/immerjs/use-immer"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 0, "longevity": 100, "rhythm": 35}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": ["no_releases"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 2869, "days_push": 624, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 32, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}