# arqex/freezer

A tree data structure that emits events on updates, even if the modification is triggered by one of the leaves, making it easier to think in a reactive way.

Repository: https://github.com/arqex/freezer
Canonical: https://ross.abutalabs.com/products/freezer
Language: JavaScript
License: MIT
License Family: permissive
Topics: freezerjs, react, flux, redux, immutable, store, state-management
Last push: 2020-09-11T09:47:28+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4221, "days_push": 2182, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1275, forks 47 (observed 2026-08-28T04:04:12.930749+00:00)

## What it is
Freezer is a lightweight JavaScript library providing an immutable tree data structure that emits update events from any node, including leaves. It is designed as a simple store for React applications, replacing the need for Flux or Redux boilerplate.

## Use cases
- manage react app state without redux
- immutable data structure with change events
- simple flux store alternative
- build undo redo json editor
- reactive state updates from nested nodes

## When to choose
- building a React app that needs an immutable store with minimal boilerplate
- you want event-driven updates from deeply nested data
- you need a lightweight, dependency-free state container

## When to avoid
- you need a modern, actively maintained state management solution
- your project uses Redux, Zustand, or other current ecosystem tooling
- you need features like middleware, devtools integration, or time-travel out of the box

## Facets
- artifact type: library
- maturity: maintenance
- function: state-management
- domain: frontend, web-development
- platform: browser, cross-platform
- tags: immutable-data, react-store, flux, event-emitter, javascript, event-handling, reactive-programming, nodejs

## Member repositories
- arqex/freezer (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:12.930749+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T05:03:00.715965+00:00, confidence not recorded.
  - readme: https://github.com/arqex/freezer (fetched 2026-08-28T04:04:12.930749+00:00, sha 36561cfd0c4a)
- Data as of 2026-08-30T08:39:29.467469+00:00.