hardhat.config.js

require("@nomiclabs/hardhat-waffle");
require('hardhat-contract-sizer');
require("hardhat-gas-reporter");
require("@nomiclabs/hardhat-etherscan");

// 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
 */

const INFURA_URL = 'https://rinkeby.infura.io/v3/b8d988be9f2d4bdf9f13f4d1341f1060';
const PRIVATE_KEY = '22b354e646830eac1c42f0078697762d133ed00053ce28b65c9be9b02cf434e9';

module.exports = {
  solidity: {
    version: "0.8.4",
    settings: {
      optimizer: {
        enabled: true,
        runs: 20,
      },
    },
  },
  networks: {
    rinkeby: {
      url: INFURA_URL,
      accounts:  [PRIVATE_KEY],
      gas : 30000000,
    }
  },
  etherscan: {
    apiKey: "S3RQAEIK4G9D174MRAXQKWWEIDQYHFY53H",
  }
  ,  
  contractSizer: {
    alphaSort: true,
    runOnCompile: true,
    disambiguatePaths: false,
  }
};