hardhat.config.ts

import * as dotenv from 'dotenv'
import '@nomicfoundation/hardhat-toolbox'
import '@openzeppelin/hardhat-upgrades'

import importToml from 'import-toml'
// @ts-ignore
const foundryConfig = importToml.sync('foundry.toml').profile

dotenv.config()

const PRIVATE_KEY = process.env.PRIVATE_KEY
const accounts = PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : []

export default {
  networks: {
    hardhat: {
      allowUnlimitedContractSize: true,
    },
    dev: {
      url: 'http://127.0.0.1:8545',
      accounts: accounts,
    },
    mainnet: {
      url: 'https://babel-api.mainnet.iotex.io/',
      accounts: accounts,
    },
    testnet: {
      url: 'https://babel-api.testnet.iotex.io/',
      accounts: accounts,
    }
  },
  namedAccounts: {
    deployer: {
      default: 0,
      1: 0,
    },
    admin: {
      default: 1,
    },
  },
  solidity: {
    compilers: [{
      version: '0.8.19',
      settings: {
        viaIR: foundryConfig.default.via_ir,
        optimizer: {
          enabled: true,
          runs: foundryConfig.default.optimizer_runs,
        },
        metadata: {
          bytecodeHash: 'none',
        },
      }
    }]
  },
  typechain: {
    outDir: 'src/types'
  },
  etherscan: {
    apiKey: 'YOUR_ETHER',
    customChains: [
      {
        network: 'mainnet',
        chainId: 4689,
        urls: {
          apiURL: 'https://IoTeXscout.io/api',
          browserURL: 'https://IoTeXscan.io',
        },
      },
      {
        network: 'testnet',
        chainId: 4690,
        urls: {
          apiURL: 'https://testnet.IoTeXscout.io/api',
          browserURL: 'https://testnet.IoTeXscan.io',
        },
      },
    ],
  },
}