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.

Try it in the Playground

Installation

npm install zzon

Usage

Stringify

import { ZON } from 'zzon';

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

Parse

import { ZON } from 'zzon';

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

Playground

Benchmarks

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

Example Usage

• Browser
• Bun

License

MIT