@omnitron-dev/msgpack

Extensible MessagePack serializer with custom type support and streaming

Part of the Omni monorepo — Fullstack Type-Safe RPC Framework.

Installation

pnpm add @omnitron-dev/msgpack

Overview

High-performance MessagePack implementation for Node.js. Compliant with the MessagePack spec, with built-in support for JavaScript-native types (Date, Map, Set, RegExp, BigInt, Error) and a custom type extension system. Used as the default wire format for Netron RPC.

Key Features

• Full spec compliance — all MessagePack types
• Native JS types — Date, Map, Set, RegExp, BigInt, Error serialization out of the box
• Custom extensions — serializer.register(typeId, constructor, encoder, decoder)
• Streaming — incremental decode via tryDecode for handling partial buffers
• Error preservation — stack traces and custom properties survive round-trips

Quick Start

import { encode, decode } from '@omnitron-dev/msgpack';

const buf = encode({ name: 'John', joined: new Date() });
const obj = decode(buf); // Date instance preserved

License

MIT