hardhat.config.ts

import { HardhatUserConfig } from 'hardhat/config'
import { join } from 'path'
import dotenv from 'dotenv'
import '@nomicfoundation/hardhat-toolbox'

dotenv.config() // project root
dotenv.config({ path: join(process.cwd(), '../../.env') }) // workspace root

const deployerKey = process.env.DEPLOYER_KEY
if (!deployerKey) {
  console.warn('DEPLOYER_KEY not found in .env file. Running with default config')
}
const etherscanApiKey = process.env.ETHERSCAN_API_KEY ?? ''
if (!etherscanApiKey) {
  console.warn('ETHERSCAN_API_KEY not found in .env file. Will skip Etherscan verification')
}
const infuraApiKey = process.env.INFURA_API_KEY ?? ''
if (!infuraApiKey) {
  console.warn('INFURA_API_KEY not found in .env file.')
}
const optimisticApiKey = process.env.OPTIMISTIC_API_KEY ?? etherscanApiKey ?? ''
if (!optimisticApiKey) {
  console.warn('OPTIMISTIC_API_KEY not found in .env file. Will skip Etherscan verification')
}

const config: HardhatUserConfig = {
  defaultNetwork: 'hardhat',
  solidity: {
    version: '0.8.22',
    settings: {
      optimizer: {
        enabled: true,
        runs: 200
      }
    },
  },
  etherscan: {
    apiKey: {
      mainnet: etherscanApiKey,
      sepolia: etherscanApiKey,
      optimisticEthereum: optimisticApiKey,
      "base-sepolia": etherscanApiKey
    },
  },
  networks: {
    hardhat: {
      chainId: 31337,
    },
    localhost: {
      chainId: 31337,
      url: 'http://127.0.0.1:8545',
    },
    sepolia: {
      chainId: 11155111,
      url: 'https://rpc.sepolia.org/', // https://rpc-sepolia.rockx.com/ || https://rpc.sepolia.org/ || infuraApiKey ? `https://sepolia.infura.io/v3/${infuraApiKey}`
      accounts: [deployerKey as string],
    },
    "base-sepolia": {
      chainId: 84532,
      url: "https://sepolia.base.org",
      accounts: [deployerKey as string],
      // apiURL: "https://api-sepolia.basescan.org/api",
      // browserURL: "https://sepolia.basescan.org"
    },
    optimism: {
      chainId: 10,
      url: 'https://mainnet.optimism.io/',
      accounts: [deployerKey as string],
    },
    base: {
      chainId: 8453,
      url: 'https://mainnet.base.org',
      accounts: [deployerKey as string],
    },
  },
}

export default config