DataVoid Hardhat Plugin

A hardhat plugin to deploy your smart contracts via DataVoid Compression Engine across multiple Ethereum Virtual Machine (EVM) chains to save on gas fees.

Required Plugins

• ethers v6
• @nomicfoundation/hardhat-ethers

Supported networks

The current available networks are:

• Local
  • hardhat
  • localhost
• EVM-Based Test Networks
  • arbitrumSepolia
  • optimismSepolia

Installation

With npm versions >=7:

npm i --save-dev @datavoid/hardhat-plugin

With npm version 6:

npm install --save-dev @datavoid/hardhat-plugin @nomicfoundation/hardhat-ethers ethers

With yarn:

yarn add --dev @datavoid/hardhat-plugin @nomicfoundation/hardhat-ethers ethers

Import the plugin in your hardhat.config.ts:

import '@datavoid/hardhat-plugin'

Or if you are using plain JavaScript, in your hardhat.config.js:

require('@datavoid/hardhat-plugin')

Use in a deploy script

Use await hardhat.datavoid.deployContract(contractName, constructorArgs, options) in your deploy scripts to deploy a contract.

Options

All the options are optional.

• mode: 'create' | 'create2' (default: 'create')
• salt: a 12-byte hex-string (required for mode create2)
• gasLimit: a gas limit (default 1_500_000)
• value: a deploy tx value
• provider: a custom provider
• signer: a custom signer
• verbose: enable internal logs

Example deploy script

import hardhat, { ethers } from 'hardhat'

async function main() {
  const currentTimestampInSeconds = Math.round(Date.now() / 1000)
  const unlockTime = currentTimestampInSeconds + 60
  const lockedAmount = ethers.parseEther('0.0001')

  const result = await hardhat.datavoid.deployContract('Lock', [unlockTime], {
    mode:     'create2',
    salt:     '0xf53ec45060bd4d7b7a93f81c',
    value:    lockedAmount,
    gasLimit: 1_200_000,
    verbose:  true,
  })
  console.log(`Deployed to ${result.address} with L1 cost ${result.l1Cost}`)

  const owner = await result.contract.owner()
  console.log('Deployed with owner:', owner)
}

main().catch((error) => {
  console.error(error)
  process.exitCode = 1
})

Use as a task

For the simpliest case when you have just one smart contract, this plugin provides the dvdeploy task, which allows you to deploy the contract via DataVoid compression engine across multiple EVM chains using a simple configuration:

npx hardhat dvdeploy

Configuration

In case you want to use the dvdeploy task, you need to add the following configuration to your hardhat.networks.ts file:

const config: HardhatUserConfig = {
  // ...
  dvdeploy: {
    contract: 'YOUR_CONTRACT_NAME_TO_BE_DEPLOYED',
    constructorArgsPath: 'PATH_TO_CONSTRUCTOR_ARGS_FILE', // optional
    mode: 'DEPLOYMENT_MODE', // 'create' | 'create2'
    salt: 'HEX_SALT', // required if mode is 'create2'
    signer: 'SIGNER_PRIVATE_KEY',
    networks: ['LIST_OF_NETWORKS'],
    rpcUrls: ['LIST_OF_RPC_URLS'],
    gasLimit: 1_500_000, // optional; default value is 1_500_000
  },
}

Or if you are plain JavaScript, in your hardhat.config.js:

module.exports = {
  // ...
  dvdeploy: {
    contract: 'YOUR_CONTRACT_NAME_TO_BE_DEPLOYED',
    constructorArgsPath: 'PATH_TO_CONSTRUCTOR_ARGS_FILE', // optional
    mode: 'DEPLOYMENT_MODE', // 'create' | 'create2'
    salt: 'HEX_SALT', // required if mode is 'create2'
    signer: 'SIGNER_PRIVATE_KEY',
    networks: ['LIST_OF_NETWORKS'],
    rpcUrls: ['LIST_OF_RPC_URLS'],
    gasLimit: 1_500_000, // optional; default value is 1_500_000
  },
}

The parameters constructorArgsPath and gasLimit are optional.

The salt parameter is a 12-byte hex-string used to create the contract address. If you have previously deployed the same contract with the identical salt and constructor arguments, the contract creation transaction will fail due to EIP-684.

Example config

import { HardhatUserConfig } from 'hardhat/config'
import '@nomicfoundation/hardhat-toolbox'
import '@datavoid/hardhat-plugin'

const config: HardhatUserConfig = {
  solidity: '0.8.24',
  dvdeploy: {
    contract: 'MyContract',
    constructorArgsPath: './constructor-args.ts',
    mode: 'create2',
    salt: '0xf53ec45060bd4d7b7a93f81c',
    signer: vars.get('PRIVATE_KEY', ''),
    networks: [
      'hardhat',
      'localhost',
      'optimismSepolia',
    ],
    rpcUrls: [
      'hardhat',
      'http://127.0.0.1:8545/',
      'https://sepolia.optimism.io/',
    ],
    gasLimit: 1_200_000,
  },
}

export default config

[!NOTE] We recommend using Hardhat configuration variables introduced in Hardhat version 2.19.0 to set the private key of your signer.

Constructor arguments

The constructor arguments file must export an array of constructor arguments:

export default [
  'arg1',
  'arg2',
  // ...
]

BigInt literals (e.g. 100_000_000_000_000_000_000n) can be used for the constructor arguments if you set target: ES2020 in your tsconfig.json file. See also here for an example.

If you are using common JavaScript:

module.exports = [
  'arg1',
  'arg2',
  // ...
]

Caveats

msg.sender

When deploying with this plugin, msg.sender will not be the deployer address in a contract constructor as you might expect, but a DataVoid Factory Contract address.

Be careful if you have code like this:

contract Lock {
  address payable public owner;

  constructor() payable {
    owner = payable(msg.sender);
  }
}