Cubane

Next-gen Ethereum library for TypeScript

npm i @hazae41/cubane

Node Package 📦

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

┌────────────────┬──────────────────┬─────────────┬─────────────┐
│    (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

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

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)

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

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)")

saumon build ./f.abi.macro.ts

main.ts

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

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

Paste it in a file f.abi.ts

export const f = /*generated code*/

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

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

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

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

import { Bytes } from "@hazae41/bytes"
import { ExtPrivateKey } from "@hazae41/cubane"
import { Secp256k1 } from "@hazae41/secp256k1"
import { Base16 } from "@hazae41/base16"

const message = "hello world"

const privateKeyBytes = Bytes.random(32)
const privateKeyExt = new ExtPrivateKey(Secp256k1.get().PrivateKey.importOrThrow(privateKeyBytes))

const signatureExt = privateKeyExt.signPersonalMessageOrThrow(message)
const signatureBytes = signatureExt.value.exportOrThrow().copyAndDispose()
const signatureZeroHex = `0x${Base16.get().getOrThrow().encodeOrThrow(signatureBytes)}`

Recovering personal message

import { ExtPublicKey, Address } from "@hazae41/cubane"

const recoveredPublicKeyExt = ExtPublicKey.recoverPersonalMessageOrThrow(message, signatureExt)
const recoveredPublicKeyBytes = recoveredPublicKeyExt.value.exportUncompressedOrThrow().copyAndDispose()
const recoveredAddressZeroHex = Address.computeOrThrow(recoveredPublicKeyBytes)