@msgpack/msgpack

What is @msgpack/msgpack?

@msgpack/msgpack is an npm package that provides functionality for encoding and decoding data using the MessagePack format. MessagePack is a binary serialization format that is more efficient than JSON in terms of both size and speed. This package allows you to serialize JavaScript objects into a compact binary format and deserialize them back into JavaScript objects.

What are @msgpack/msgpack's main functionalities?

Encoding Data

This feature allows you to encode a JavaScript object into a MessagePack binary format. The `encode` function takes a JavaScript object and returns a Buffer containing the binary data.

const msgpack = require('@msgpack/msgpack');
const data = { foo: 'bar', num: 42 };
const encoded = msgpack.encode(data);
console.log(encoded);

Decoding Data

This feature allows you to decode a MessagePack binary format back into a JavaScript object. The `decode` function takes a Buffer containing the binary data and returns the original JavaScript object.

const msgpack = require('@msgpack/msgpack');
const encoded = Buffer.from([0x82, 0xa3, 0x66, 0x6f, 0x6f, 0xa3, 0x62, 0x61, 0x72, 0xa3, 0x6e, 0x75, 0x6d, 0x2a]);
const decoded = msgpack.decode(encoded);
console.log(decoded);

Custom Extension Types

This feature allows you to define custom extension types for encoding and decoding. You can use `addExtPacker` to specify how to serialize a custom type and `addExtUnpacker` to specify how to deserialize it.

const msgpack = require('@msgpack/msgpack');
class MyType {
  constructor(value) {
    this.value = value;
  }
}
msgpack.addExtPacker(0x01, MyType, (obj) => msgpack.encode(obj.value));
msgpack.addExtUnpacker(0x01, (data) => new MyType(msgpack.decode(data)));
const myObj = new MyType('custom data');
const encoded = msgpack.encode(myObj);
const decoded = msgpack.decode(encoded);
console.log(decoded);

Other packages similar to @msgpack/msgpack

msgpack-lite

msgpack-lite is another npm package for MessagePack serialization. It is designed to be lightweight and fast, with a focus on performance. Compared to @msgpack/msgpack, msgpack-lite may have fewer features but is optimized for speed and small bundle size.

notepack.io

notepack.io is a fast and small MessagePack implementation for JavaScript. It is designed to be highly efficient and is often used in performance-critical applications. Compared to @msgpack/msgpack, notepack.io is more focused on performance and may offer better speed at the cost of some additional features.

msgpack5

msgpack5 is a pure JavaScript implementation of the MessagePack format. It supports both encoding and decoding, as well as custom extension types. Compared to @msgpack/msgpack, msgpack5 offers similar functionality but may have different performance characteristics and API design.

README

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