> ## Documentation Index
> Fetch the complete documentation index at: https://voltaire.tevm.sh/llms.txt
> Use this file to discover all available pages before exploring further.

# Ssz

> Auto-generated API documentation

[**@tevm/voltaire**](index.mdx)

***

[@tevm/voltaire](index.mdx) / Ssz

# Ssz

SSZ (Simple Serialize) - Ethereum consensus layer serialization

## Example

```typescript theme={null}
import * as Ssz from './primitives/Ssz/index.js';

// Encode basic types
const encoded = Ssz.encodeBasic(42, 'uint32');

// Decode basic types
const decoded = Ssz.decodeBasic(encoded, 'uint32');

// Compute hash tree root
const root = await Ssz.hashTreeRoot(data);
```

## Type Aliases

### SszType

> **SszType** = `Uint8Array` & `object`

Defined in: [src/primitives/Ssz/SszType.ts:13](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/Ssz/SszType.ts#L13)

SSZ encoded data

#### Type Declaration

##### \_\_tag

> `readonly` **\_\_tag**: `"Ssz"`

## Functions

### decodeBasic()

> **decodeBasic**(`bytes`, `type`): `number` | `bigint` | `boolean`

Defined in: [src/primitives/Ssz/encodeBasic.js:57](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/Ssz/encodeBasic.js#L57)

#### Parameters

##### bytes

`Uint8Array`\<`ArrayBufferLike`>

SSZ encoded bytes

##### type

`string`

Type: 'uint8', 'uint16', 'uint32', 'uint64', 'uint256', 'bool'

#### Returns

`number` | `bigint` | `boolean`

Decoded value

#### Description

Decodes basic types from SSZ serialization

***

### encodeBasic()

> **encodeBasic**(`value`, `type`): `Uint8Array`\<`ArrayBufferLike`>

Defined in: [src/primitives/Ssz/encodeBasic.js:7](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/Ssz/encodeBasic.js#L7)

#### Parameters

##### value

Value to encode

`number` | `bigint` | `boolean`

##### type

`string`

Type: 'uint8', 'uint16', 'uint32', 'uint64', 'uint256', 'bool'

#### Returns

`Uint8Array`\<`ArrayBufferLike`>

SSZ encoded bytes

#### Description

Encodes basic types using SSZ serialization

***

### hashTreeRoot()

> **hashTreeRoot**(`data`): `Promise`\<`Uint8Array`\<`ArrayBufferLike`>>

Defined in: [src/primitives/Ssz/hashTreeRoot.js:6](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/Ssz/hashTreeRoot.js#L6)

#### Parameters

##### data

`Uint8Array`\<`ArrayBufferLike`>

Data to merkleize

#### Returns

`Promise`\<`Uint8Array`\<`ArrayBufferLike`>>

32-byte hash tree root

#### Description

Computes the hash tree root of data for Merkle proofs