hardhat.config.js

require("@nomiclabs/hardhat-waffle");
require("@nomiclabs/hardhat-etherscan");
require("hardhat-deploy");
require("solidity-coverage");
require("hardhat-gas-reporter");
require("dotenv").config();

const INFURA_ID = process.env.INFURA_ID;
const MAINNET_RPC_URL =
  process.env.MAINNET_RPC_URL ||
  process.env.ALCHEMY_MAINNET_RPC_URL ||
  `https://mainnet.infura.io/v3/${INFURA_ID}`;
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY;
const POLYGONSCAN_API_KEY = process.env.POLYGONSCAN_API_KEY;
const PRIVATE_KEY = process.env.PRIVATE_KEY;
const REPORT_GAS = process.env.REPORT_GAS || false;

module.exports = {
  defaultNetwork: "hardhat",
  networks: {
    hardhat: {
      chainId: 1337,
      // uncomment, if forking needed, after that, run command 'yarn fork'
      //   forking: {
      //     url: MAINNET_RPC_URL,
      // },
    },
    sepolia: {
      url: `https://sepolia.infura.io/v3/${INFURA_ID}`,
      accounts: PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : [],
      chainId: 11155111,
    },
    goerliOptimism: {
      url: process.env.OPTIMISM_RPC_URL,
      accounts: PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : [],
      chainId: 420,
    },
    mumbai: {
      url: process.env.MUMBAI_RPC_URL,
      accounts: PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : [],
      chainId: 80001,
    },
    mainnet: {
      // ethereum
      url: MAINNET_RPC_URL,
      accounts: PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : [],
      chainId: 1,
    },
    polygon: {
      url: MAINNET_RPC_URL,
      accounts: PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : [],
      chainId: 137,
    },
    alfajores: {
      // https://explorer.celo.org/alfajores
      // https://celo.org/developers/faucet

      // to verify contract use:
      // hardhat --network alfajores sourcify
      url: process.env.ALFAJORES_RPC_URL,
      accounts: PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : [],
      chainId: 44787,
    },
  },
  etherscan: {
    // currently doesn't support goerli optimism testnet, use https://blockscout.com/optimism/goerli/ for verification
    apiKey: {
      rinkeby: ETHERSCAN_API_KEY,
      goerli: ETHERSCAN_API_KEY,
      mainnet: ETHERSCAN_API_KEY,
      mumbai: POLYGONSCAN_API_KEY,
      polygon: POLYGONSCAN_API_KEY,
    },
  },
  gasReporter: {
    enabled: REPORT_GAS,
    currency: "USD",
    outputFile: "gas-report.txt",
    noColors: true,
    // coinmarketcap: process.env.COINMARKETCAP_API_KEY,
  },
  namedAccounts: {
    deployer: {
      default: 0, // by default take the first account as deployer
      1: 0, // on mainnet it will take the first account as deployer
    },
  },
  solidity: {
    version: "0.8.7",
    settings: {
      optimizer: {
        enabled: true,
        runs: 200,
      },
    },
  },
  mocha: {
    timeout: 200000, // 200 seconds max for running tests
  },
};