---
title: "@std/msgpack"
description: "Encoding and decoding for the msgpack format"
jsr: jsr:@std/msgpack
pkg: msgpack
version: 1.0.3
generated: true
stability: stable
---
<!-- Autogenerated from JSR docs. Do not edit directly. -->

## Overview

<p>This module provides functions to encode and decode MessagePack.</p>
<p>MessagePack is an efficient binary serialization format that is language
agnostic. It is like JSON, but generally produces much smaller payloads.
<a href="https://msgpack.org/" rel="nofollow">Learn more about MessagePack</a>.</p>

```js
import { decode, encode } from "@std/msgpack";
import { assertEquals } from "@std/assert";

const obj = {
  str: "deno",
  arr: [1, 2, 3],
  bool: true,
  nil: null,
  map: {
    foo: "bar"
  }
};

const encoded = encode(obj);
assertEquals(encoded.length, 42);

const decoded = decode(encoded);
assertEquals(decoded, obj);
```

<p>MessagePack supports encoding and decoding the following types:</p>
<ul>
<li><code>number</code></li>
<li><code>bigint</code></li>
<li><code>string</code></li>
<li><code>boolean</code></li>
<li><code>null</code></li>
<li><code>Uint8Array</code></li>
<li>arrays of values of these types</li>
<li>objects with string or number keys, and values of these types</li>
</ul>

### Add to your project

```sh
deno add jsr:@std/msgpack
```

<a href="https://jsr.io/@std/msgpack/doc" class="docs-cta jsr-cta">See all symbols in @std/msgpack on
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