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();

const { RINKEBY_RPC_URL, PRIVATE_KEY, ETHERSCAN_API_KEY, MAINNET_URL } =
  process.env;

module.exports = {
  defaultNetwork: "hardhat",
  networks: {
    hardhat: {
      chainId: 31337,
      forking: {
        url: MAINNET_URL,
      },
    },
    rinkeby: {
      url: RINKEBY_RPC_URL,
      accounts: [PRIVATE_KEY],
      chainId: 4,
    },
  },
  solidity: {
    compilers: [
      {
        version: "0.8.8",
      },
      {
        version: "0.8.0",
      },
      {
        version: "0.4.19",
      },
      {
        version: "0.6.6",
      },
      {
        version: "0.6.12",
      },
    ],
  },
  namedAccounts: {
    deployer: {
      default: 0,
    },
  },
  etherscan: {
    apiKey: ETHERSCAN_API_KEY,
  },
};