hardhat.config.ts

import * as dotenv from 'dotenv'

import { HardhatUserConfig, task } from 'hardhat/config'
import '@nomiclabs/hardhat-etherscan'
import '@nomiclabs/hardhat-waffle'
import '@nomiclabs/hardhat-ethers'
import '@typechain/hardhat'
import 'hardhat-deploy'
import 'hardhat-gas-reporter'
import 'solidity-coverage'

dotenv.config()

// 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

const config: HardhatUserConfig = {
  solidity: '0.8.6',
  networks: {
    ropsten: {
      url: process.env.ROPSTEN_URL || '',
      accounts: process.env.PRIVATE_KEY !== undefined ? [process.env.PRIVATE_KEY] : [],
    },
    rinkeby: {
      url: process.env.RINKEBY_URL || '',
      accounts:
        process.env.RINKEBY_PRIVATE_KEY !== undefined ? [process.env.RINKEBY_PRIVATE_KEY] : [],
      gasPrice: 50000000000,
    },
  },
  gasReporter: {
    enabled: process.env.REPORT_GAS !== undefined,
    currency: 'USD',
  },
  etherscan: {
    apiKey: process.env.ETHERSCAN_API_KEY,
  },
  namedAccounts: {
    deployer: {
      default: 0, // here this will by default take the first account as deployer
      1: 0, // similarly on mainnet it will take the first account as deployer. Note though that depending on how hardhat network are configured, the account 0 on one network can be different than on another
    },
  },
}

export default config