hardhat.config.ts

import * as dotenv from "dotenv";

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

dotenv.config();

const MAINNET_RPC_URL =
  process.env.MAINNET_RPC_URL || process.env.ALCHEMY_MAINNET_RPC_URL;
const RINKEBY_RPC_URL = process.env.RINKEBY_RPC_URL;
const KOVAN_RPC_URL = process.env.KOVAN_RPC_URL;
const MNEMONIC = process.env.MNEMONIC || "your mnemonic";
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY;
// optional
const PRIVATE_KEY = process.env.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 (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 = {
  defaultNetwork: "hardhat",
  namedAccounts: {
    deployer: {
      default: 0,
    },
  },
  networks: {
    hardhat: {},
    rinkeby: {
      url: RINKEBY_RPC_URL,
      accounts: {
        mnemonic: MNEMONIC,
      },
      saveDeployments: true,
    },
    polygon: {
      url: "https://rpc-mainnet.maticvigil.com/",
      // accounts: [PRIVATE_KEY],
      accounts: {
        mnemonic: MNEMONIC,
      },
      saveDeployments: true,
    },
    // ropsten: {
    //   url: process.env.ROPSTEN_URL,
    //   accounts:
    //     process.env.PRIVATE_KEY !== undefined ? [process.env.PRIVATE_KEY] : [],
    // },
  },
  gasReporter: {
    enabled: process.env.REPORT_GAS !== undefined,
    currency: "USD",
  },
  etherscan: {
    apiKey: ETHERSCAN_API_KEY,
  },
  solidity: {
    settings: {
      optimizer: {
        enabled: true,
        runs: 1000,
      },
    },
    compilers: [
      {
        version: "0.8.0",
      },
      {
        version: "0.8.1",
      },
      {
        version: "0.8.4",
      },
      {
        version: "0.7.0",
      },
      {
        version: "0.6.6",
      },
      {
        version: "0.4.24",
      },
    ],
  },
};

export default config;