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 COINMARKETCAP_API_KEY = process.env.COINMARKETCAP_API_KEY || "";
const GOERLI_RPC_URL =
  process.env.GOERLI_RPC_URL ||
  "https://eth-mainnet.alchemyapi.io/v2/your-api-key";
const PRIVATE_KEY = process.env.PRIVATE_KEY || "0x";
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY || "";

module.exports = {
  defaultNetwork: "hardhat",
  networks: {
    hardhat: {
      chainId: 31337,
      // gasPrice: 130000000000,
    },
    goerli: {
      url: GOERLI_RPC_URL,
      accounts: [PRIVATE_KEY],
      chainId: 5,
      blockConfirmations: 6,
    },
  },
  solidity: {
    compilers: [
      {
        version: "^0.8.17",
      },
      {
        version: "0.6.6",
      },
    ],
  },
  etherscan: {
    apiKey: ETHERSCAN_API_KEY,
    // customChains: [], // uncomment this line if you are getting a TypeError: customChains is not iterable
  },
  gasReporter: {
    enabled: true,
    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
    },
  },
  mocha: {
    timeout: 500000,
  },
};