# cojson

> CoJSON is the core protocol implementation of Jazz, a framework for distributed state.

Latest version **0.20.19** (published 2026-07-03) · MIT license · 0 weekly downloads

## Install

```sh
npm install cojson
pnpm add cojson
yarn add cojson
bun add cojson
```

## Health

**Score 60/100 (C)** — status: active.

Positive: has types; esm support; no vulnerabilities; high quality score.

Warnings: low downloads; pre 1.0.

## Facts

| | |
|---|---|
| Version | 0.20.19 |
| Published | 2026-07-03 |
| First published | 2023-06-05 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | bundled |
| Module format | ESM + CommonJS |
| Dependencies | 7 |
| Unpacked size | 5.5 MB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| Maintainers | ae_play, anselm_io |

## Links

- npm: https://www.npmjs.com/package/cojson
- npm.io page: https://npm.io/package/cojson

## Dependencies (7)

- [@scure/base](https://npm.io/package/@scure/base.md) 1.2.1
- [@noble/hashes](https://npm.io/package/@noble/hashes.md) ^1.8.0
- [cojson-core-rn](https://npm.io/package/cojson-core-rn.md) 0.20.19
- [cojson-core-napi](https://npm.io/package/cojson-core-napi.md) 0.20.19
- [cojson-core-wasm](https://npm.io/package/cojson-core-wasm.md) 0.20.19
- [unicode-segmenter](https://npm.io/package/unicode-segmenter.md) ^0.12.0
- [@opentelemetry/api](https://npm.io/package/@opentelemetry/api.md) ^1.9.0

## Recent versions

- 0.20.19 (latest) — 2026-07-03
- 0.8.19-group-inheritance.0 (group-inheritance) — 2024-11-13
- 0.7.35-guest-auth.5 (guest-auth) — 2024-09-06
- 0.7.35-unique.2 (unique) — 2024-09-02
- 0.7.34-neverthrow.8 (neverthrow) — 2024-08-22
- 0.7.33-hotfixes.5 (hotfixes) — 2024-08-20
- 0.20.18 — 2026-04-30
- 0.20.17 — 2026-04-08
- 0.20.16 — 2026-03-31
- 0.20.15 — 2026-03-24
- 0.20.14 — 2026-03-13
- 0.20.12 — 2026-03-02
- 0.20.11 — 2026-02-25
- 0.20.10 — 2026-02-19
- 0.20.9 — 2026-02-09
- … 309 more at https://npm.io/package/cojson/versions

## README

# CoJSON

CoJSON is the core protocol implementation of Jazz, a framework for distributed state.

See [jazz.tools](https://jazz.tools).

---
_Source: https://npm.io/package/cojson · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._