Zig ZON › zzon

A fast, spec-compliant ZON parser and serializer for JavaScript.

ZON is a compact, human-readable, and easy-to-parse data format from the Zig programming language that is similar to JSON in JavaScript.

The API is similar to the native JSON API.

Installation

npm install zzon

import { ZON } from 'zzon';

const zon = ZON.stringify({"a":1,"b":"abc","c":true});
console.log(zon); // .{.a=1,.b="abc",.c=true}

import { ZON } from 'zzon';

const json = ZON.parse(`.{.a=1,.b="abc",.c=true}`);
console.log(json); // {"a":1,"b":"abc","c":true}

Performance comparison between ZON and JSON (source: test/index.test.ts):

Operation	JSON	ZON	Difference
Parse	430.80 MB/s	38.66 MB/s	11.04x slower
Stringify	454.94 MB/s	87.43 MB/s	5.15x slower

Hardware: Apple M1 Pro
Platform: darwin 25.0.0 (arm64)

Last updated: 2025-10-24T03:55:48.380Z