hardhat.config.js

require("@nomicfoundation/hardhat-toolbox");
require("dotenv").config()

// Etherscan API
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY;

// https://www.alchemyapi.io
const ALCHEMY_API_KEY = process.env.ALCHEMY_API_KEY;

// Account Private Key for Hardhat Singing
const SEPOLIA_PRIVATE_KEY = process.env.SEPOLIA_PRIVATE_KEY;

// Account PK for Hardhat Signing
const ETHEREUM_PRIVATE_KEY = process.env.ETHEREUM_PRIVATE_KEY;

/** @type import('hardhat/config').HardhatUserConfig */
module.exports = {
  etherscan: {
    apiKey: ETHERSCAN_API_KEY
  },
  solidity: {
    compilers: [{
        version: "0.8.17",
        settings: {
          optimizer: {
            enabled: true,
            runs: 200
          }
        }
      },
      {
        version: "0.8.7",
        settings: {
          optimizer: {
            enabled: true,
            runs: 200
          }
        }
      },
      {
        version: "0.8.1",
        settings: {
          optimizer: {
            enabled: true,
            runs: 200
          }
        }
      },
      {
        version: "0.8.0",
        settings: {
          optimizer: {
            enabled: true,
            runs: 200
          }
        }
      },
      {
        version: "0.8.4",
        settings: {
          optimizer: {
            enabled: true,
            runs: 200
          }
        }
      }
    ]
  },
  defaultNetwork: "hardhat",
  networks: {
    sepolia: {
      url: `https://eth-sepolia.g.alchemy.com/v2/${ALCHEMY_API_KEY}`,
      accounts: [SEPOLIA_PRIVATE_KEY]
    },
    hardhat: {},
    ethereum: {
      url: `https://eth-mainnet.g.alchemy.com/v2/${ALCHEMY_API_KEY}`,
      accounts: [ETHEREUM_PRIVATE_KEY]
    }
  },
  paths: {
    sources: "./contracts",
    tests: "./test",
    cache: "./cache",
    artifacts: "./artifacts"
  },
  gasReporter: {
    enabled: true,
    currency: 'USD',
    gasPrice: 46
  },
};