hardhat.config.ts

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

require('dotenv').config();

const config: HardhatUserConfig = {
  solidity: {
    version: '0.8.17',
  },
  networks: {
    // for mainnet
    'base-mainnet': {
      url: 'https://mainnet.base.org',
      accounts: [process.env.WALLET_KEY as string],
    },
    // for testnet
    'base-goerli': {
      url: 'https://goerli.base.org',
      accounts: [process.env.WALLET_KEY as string],
      gasPrice: 100,
    },
    // for local dev environment
    'base-local': {
      url: 'http://localhost:8545',
      accounts: [process.env.WALLET_KEY as string],
    },
  },
  etherscan: {
    apiKey: {
      "base-goerli": "PLACEHOLDER_STRING",
      "base-mainnet": "<YOUR_API_KEY>"
    },
    customChains: [
      {
        network: "base-goerli",
        chainId: 84531,
        urls: {
          apiURL: "https://api-goerli.basescan.org/api",
          browserURL: "https://goerli.basescan.org"
        }
      },
      {
        network: "base-mainnet",
        chainId: 8453,
        urls: {
          apiURL: "https://api.basescan.org/api",
          browserURL: "https://basescan.org"
        }
      }
    ]
  },
  defaultNetwork: 'base-goerli',
};

export default config;