hardhat.config.ts

import { task } from "hardhat/config";
import "@nomiclabs/hardhat-waffle";
import '@typechain/hardhat'
import '@nomiclabs/hardhat-ethers'
import dotenv from 'dotenv';

dotenv.config();

const INFURA_KEY = process.env.INFURA_KEY;

// Replace this private key with your Ropsten account private key
// To export your private key from Metamask, open Metamask and
// go to Account Details > Export Private Key
// Be aware of NEVER putting real Ether into testing accounts
const ROPSTEN_PRIVATE_KEY = process.env.ROPSTEN_PRIVATE_KEY;
const RINKEBY_PRIVATE_KEY = process.env.RINKEBY_PRIVATE_KEY;
const KOVAN_PRIVATE_KEY = process.env.KOVAN_PRIVATE_KEY;

// 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 (_, 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
 */
export default {
  solidity: "0.8.4",
  networks: {
    ropsten: {
      url: `https://ropsten.infura.io/v3/${INFURA_KEY}`,
      accounts: [`0x${ROPSTEN_PRIVATE_KEY}`]
    },
    rinkeby: {
      url: `https://rinkeby.infura.io/v3/${INFURA_KEY}`,
      accounts: [`0x${RINKEBY_PRIVATE_KEY}`]
    },
    kovan: {
      url: `https://kovan.infura.io/v3/${INFURA_KEY}`,
      accounts: [`0x${KOVAN_PRIVATE_KEY}`]
    }
  }
};