hardhat.config.ts

import { task, HardhatUserConfig } from "hardhat/config"
import "@nomiclabs/hardhat-waffle"
import "@nomiclabs/hardhat-ethers"
import dotenv from "dotenv"

dotenv.config()

const ALCHEMY_API_KEY = process.env.ALCHEMY_API_KEY
const ROPSTEN_PRIVATE_KEY = process.env.ROPSTEN_PRIVATE_KEY

const config: HardhatUserConfig = {
  solidity: "0.7.3",
  networks: {
    rinkeby: {
      url: `https://eth-rinkeby.alchemyapi.io/v2/${ALCHEMY_API_KEY}`,
      accounts: [`0x${ROPSTEN_PRIVATE_KEY}`],
      // gas: 2100000,
      // gasPrice: 1000000100,
    },
  },
}

// 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 (args, hre: any) => {
  const accounts = await hre.ethers.getSigners()

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

export default config