npm package: @hazae41/cubane
Description: Next-gen Ethereum library for TypeScript
Author: hazae41
Latest version: 0.3.12

# Cubane

Next-gen Ethereum library for TypeScript

```bash
npm i @hazae41/cubane
```

[**Node Package 📦**](https://www.npmjs.com/package/@hazae41/cubane)

## Features

### Goals
- 100% TypeScript and ESM
- Minimal dependencies
- Rust-like patterns
- Human-readable code
- Bottom-up abstractions
- Bring your own algorithms
- Zero-copy bytes encoding
- Compile-time codegen

### Implemented
- ABI / ABIv2 (except `fixed`)
- Function parsing (e.g. `f(uint256)`)
- Recursive-Length Prefix (RLP) coding
- TypedData (EIP-712) hashing
- ENS (e.g. `namehash`)
- Signatures

### Coming soon
- JSON-ABI parsing
- Return type of functions
- Transactions

## Benchmark

### Encoding various types with preparsed ABI

Cubane can encode both to hexadecimal string and to Uint8Array, this benchmark aims to check the speed difference between both engines and between other libraries

- @hazae41/cubane@0.1.14
- viem@2.4.1
- ethers@6.10.0

Running on Node 20.3.1 on Apple M1 Max

```bash
┌────────────────┬──────────────────┬─────────────┬─────────────┐
│    (index)     │     average      │   minimum   │   maximum   │
├────────────────┼──────────────────┼─────────────┼─────────────┤
│ cubane (bytes) │  '4.10 μs/iter'  │  '3.08 μs'  │ '129.37 μs' │
│  cubane (hex)  │  '4.47 μs/iter'  │  '3.83 μs'  │ '76.13 μs'  │
│      viem      │ '18.77 μs/iter'  │ '16.58 μs'  │ '184.83 μs' │
│     ethers     │ '211.55 μs/iter' │ '194.08 μs' │ '586.21 μs' │
└────────────────┴──────────────────┴─────────────┴─────────────┘
Summary
- cubane (hex) is 4.20x faster than viem
- cubane (hex) is 47.28x faster than ethers
Summary
- cubane (bytes) is 4.58x faster than viem
- cubane (bytes) is 51.59x faster than ethers
```

## Setup

### Symbol.dispose

You may need to polyfill `Symbol.dispose`

```tsx
import "@hazae41/symbol-dispose-polyfill"
```

See https://github.com/hazae41/symbol-dispose-polyfill for more

### Algorithms

You can bring your own implementation for some algorithms

#### Keccak256 (required for almost everything)

See https://github.com/hazae41/keccak256 for setup

#### Secp256k1 (required for signatures)

See https://github.com/hazae41/secp256k1 for setup

#### Base16 (optional)

See https://github.com/hazae41/base16 for setup

## Usage

### Abi to Hex (runtime)

Parse the function from its signature

```tsx
import { Abi } from "@hazae41/cubane"

const f = Abi.FunctionSignature.parseOrThrow("f(bool,uint256,string)")
```

Encode the function selector and its arguments (it will return a `0x`-prefixed hex string)

```tsx
const hex = f.from(true, 123456789n, "hello world").encodeOrThrow()
// c4b71e130000000000000000000000000000000000000000000000000000000000000001...
```

### Abi to Hex (macro)

Cubane provides Saumon macros to generate typed ABI functions

`f.abi.macro.ts`

```tsx
import "@hazae41/symbol-dispose-polyfill"
import { Abi } from "@hazae41/cubane"

/**
 * Your Keccak256 adapter code
 */
import "./keccak256.js"

export const f = Abi.FunctionSignature.$parse$("f(bool,uint256,string)")
```

```bash
saumon build ./f.abi.macro.ts
```

`main.ts`

```tsx
import { f } from "./f.abi.ts"

/**
 * f is fully typed as (bool,uint256,string)
 */
const hex = f.from(true, 123456789n, "hello world").encodeOrThrow()
// c4b71e130000000000000000000000000000000000000000000000000000000000000001...
```

### Abi to Hex (manual)

You can generate the function from its signature

```tsx
> import { Abi } from "@hazae41/cubane"
> console.log(Abi.FunctionSignature.parseOrThrow("f(bool,uint256,string)").codegen())
```

Paste it in a file `f.abi.ts`

```tsx
export const f = /*generated code*/
```

Encode the function selector and its arguments (it will return a `0x`-prefixed hex string)

```tsx
import { f } from "./f.abi.ts"

/**
 * f is fully typed as (bool,uint256,string)
 */
const hex = f.from(true, 123456789n, "hello world").encodeOrThrow()
// c4b71e130000000000000000000000000000000000000000000000000000000000000001...
```

### Rlp to Bytes

```tsx
import { RlpString, RlpList } from "@hazae41/cubane"
import { Writable } from "@hazae41/binary"

const cat = RlpString.from(Bytes.fromUtf8("cat"))
const dog = RlpString.from(Bytes.fromUtf8("dog"))
const catAndDog = RlpList.from([cat, dog])

const bytes = Writable.writeToBytesOrThrow(catAndDog)
```

### Rlp to Hex

```tsx
import { RlpString, RlpList } from "@hazae41/cubane"
import { Writable } from "@hazae41/binary"

const cat = RlpString.from(Bytes.fromUtf8("cat"))
const dog = RlpString.from(Bytes.fromUtf8("dog"))
const catAndDog = RlpList.from([cat, dog])

const bytes = Writable.writeToBytesOrThrow(catAndDog)
const hex = "0x" + Base16.get().getOrThrow().encodeOrThrow(bytes)
```

### Signatures

#### Signing personal message

```tsx
import { SigningKey, ZeroHexSignature } from "@hazae41/cubane"

const message = "hello world"
const signingKey = crypto.getRandomValues(new Uint8Array(32))

const signatureWasm = SigningKey.signPersonalMessageOrThrow(signingKey, message) // WASM pointer
const signatureZeroHex = ZeroHexSignature.fromOrThrow(signatureWasm) // "0x..."
```

#### Recovering personal message

```tsx
import { Address, recoverPersonalMessageOrThrow } from "@hazae41/cubane"

const verifyingKeyWasm = recoverPersonalMessageOrThrow(message, signature)
const addressZeroHex = Address.computeOrThrow(verifyingKeyWasm)
```