hardhat.config.js

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

/**
 * @type import('hardhat/config').HardhatUserConfig
 */

const MAINNET_RPC_URL =
  process.env.MAINNET_RPC_URL ||
  process.env.ALCHEMY_MAINNET_RPC_URL ||
  "https://eth-mainnet.alchemyapi.io/v2/your-api-key"
const SEPOLIA_RPC_URL =
  process.env.SEPOLIA_RPC_URL ||
  "https://eth-sepolia.g.alchemy.com/v2/YOUR-API-KEY"
const POLYGON_MAINNET_RPC_URL =
  process.env.POLYGON_MAINNET_RPC_URL ||
  "https://polygon-mainnet.alchemyapi.io/v2/your-api-key"
const PRIVATE_KEY = process.env.PRIVATE_KEY
// optional
const MNEMONIC = process.env.MNEMONIC || "your mnemonic"

// Your API key for Etherscan, obtain one at https://etherscan.io/
const ETHERSCAN_API_KEY =
  process.env.ETHERSCAN_API_KEY || "Your etherscan API key"
const POLYGONSCAN_API_KEY =
  process.env.POLYGONSCAN_API_KEY || "Your polygonscan API key"
const REPORT_GAS = process.env.REPORT_GAS.toLowerCase() === "true" || false

module.exports = {
  defaultNetwork: "hardhat",
  networks: {
    hardhat: {
      // // If you want to do some forking, uncomment this
      // forking: {
      //   url: MAINNET_RPC_URL
      // },
      chainId: 31337,
    },
    localhost: {
      chainId: 31337,
    },
    sepolia: {
      url: SEPOLIA_RPC_URL,
      accounts: PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : [],
      //accounts: {
      //     mnemonic: MNEMONIC,
      // },
      saveDeployments: true,
      chainId: 11155111,
      blockConfirmation: 6,
    },
    mainnet: {
      url: MAINNET_RPC_URL,
      accounts: PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : [],
      //   accounts: {
      //     mnemonic: MNEMONIC,
      //   },
      saveDeployments: true,
      chainId: 1,
    },
    polygon: {
      url: POLYGON_MAINNET_RPC_URL,
      accounts: PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : [],
      saveDeployments: true,
      chainId: 137,
    },
  },
  etherscan: {
    // npx hardhat verify --network <NETWORK> <CONTRACT_ADDRESS> <CONSTRUCTOR_PARAMETERS>
    apiKey: {
      sepolia: ETHERSCAN_API_KEY,
      polygon: POLYGONSCAN_API_KEY,
    },
  },
  gasReporter: {
    enabled: REPORT_GAS,
    currency: "USD",
    outputFile: "gas-report.txt",
    noColors: true,
    // coinmarketcap: process.env.COINMARKETCAP_API_KEY,
  },
  contractSizer: {
    runOnCompile: false,
    only: ["OurToken"],
  },
  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
    },
    user1: {
      default: 1,
    },
  },
  solidity: {
    compilers: [
      {
        version: "0.8.7",
      },
      {
        version: "0.4.24",
      },
    ],
  },
  mocha: {
    timeout: 200000, // 200 seconds max for running tests
  },
}