hardhat.config.js

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

// This is a sample Hardhat task. To learn how to create your own go to
// https://hardhat.org/guides/create-task.html
task("accounts", "Prints the list of accounts", async (taskArgs, hre) => {
  const accounts = await hre.ethers.getSigners();

  for (const account of accounts) {
    console.log(account.address);
  }
});

// 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
 */
module.exports = {
  solidity: {
    version: "0.8.11",
    settings: {
      optimizer: {
        enabled: true,
        runs: 10000
      },
    },
  },
  networks: {
    hardhat: {
      allowUnlimitedContractSize: true,
    },
  },
  etherscan: {
    apiKey: {
      mainnet: process.env.ETHERSCAN_API_KEY,
      ropsten: process.env.ETHERSCAN_API_KEY,
      rinkeby: process.env.ETHERSCAN_API_KEY,
      bsc: process.env.BSCSCAN_API_KEY,
      bscTestnet: process.env.BSCSCAN_API_KEY,
      polygon: process.env.POLYGONSCAN_API_KEY,
      polygonMumbai: process.env.POLYGONSCAN_API_KEY,
      arbitrumOne: process.env.ARBISCAN_API_KEY,
      arbitrumTestnet: process.env.ARBISCAN_API_KEY,
      avalanche: process.env.SNOWTRACE_API_KEY,
      avalancheFujiTestnet: process.env.SNOWTRACE_API_KEY,
    }
  },
  mocha: {
    grep: process.env.MOCHA_GREP,
  },
};