hardhat.config.js

require("@nomiclabs/hardhat-waffle")
require("hardhat-gas-reporter")
require("@nomiclabs/hardhat-etherscan")
require("dotenv").config()
require("solidity-coverage")
require("hardhat-deploy")
// You need to export an object to set up your config
// Go to https://hardhat.org/config/ to learn more
/**
 * @type import('hardhat/config').HardhatUserConfig
 */

const MAINNET_RPC_URL = process.env.MAINNET_RPC_URL || ""
const COINMARKETCAP_API_KEY = process.env.COINMARKETCAP_API_KEY || ""
const GOERLI_RPC_URL =
  process.env.GOERLI_RPC_URL || "https://eth-goerli.alchemyapi.io/v2/your-api-key"
const PRIVATE_KEY =
  process.env.PRIVATE_KEY || "0x11ee3108a03081fe260ecdc106554d09d9d1209bcafd46942b10e02943effc4a"
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY || ""

module.exports = {
  defaultNetwork: "hardhat",
  networks: {
    hardhat: {
      chainId: 31337,
      forking: {
        url: MAINNET_RPC_URL
      }
    },
    localhost: {
      chainId: 31337
    },
    goerli: {
      url: GOERLI_RPC_URL,
      accounts: [PRIVATE_KEY],
      chainId: 5,
      blockConfirmations: 6
    }
  },
  solidity: {
    compilers: [
      {
        version: "0.8.8"
      },
      {
        version: "0.6.12"
      },
      {
        version: "0.6.6"
      },
      {
        version: "0.4.19"
      }
    ]
  },
  etherscan: {
    apiKey: ETHERSCAN_API_KEY
  },
  gasReporter: {
    enabled: false,
    currency: "USD",
    outputFile: "gas-report.txt",
    noColors: true,
    coinmarketcap: COINMARKETCAP_API_KEY
  },
  namedAccounts: {
    deployer: {
      default: 0, // here this will by default take the first account as deployer
      1: 0 // similarly on mainnet it will take the first account as deployer. Note though that depending on how hardhat network are configured, the account 0 on one network can be different than on another
    }
  }
}