hardhat.config.ts

import { config as dotEnvConfig } from "dotenv";
dotEnvConfig();

import { HardhatUserConfig } from "hardhat/types";

import "@nomiclabs/hardhat-waffle";
import "@typechain/hardhat";
import "@nomiclabs/hardhat-etherscan";
import "solidity-coverage";
import "hardhat-deploy";

const ALCHEMY_API_KEY = process.env.ALCHEMY_API_KEY || "";
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY;
const PRIVATE_KEY = process.env.PRIVATE_KEY || ""

const config: HardhatUserConfig = {
  solidity: {
    compilers: [{ version: "0.8.9", settings: {} }],
  },
  namedAccounts: {
    deployer: 0,
  },
  networks: {
    hardhat: {},
    localhost: {},
    kovan: {
      url: `https://eth-kovan.alchemyapi.io/v2/${ALCHEMY_API_KEY}`,
      accounts: [`0x${PRIVATE_KEY}`],
    },
    polygon: {
      url: `https://polygon-mainnet.g.alchemy.com/v2/${ALCHEMY_API_KEY}`,
      accounts: [`0x${PRIVATE_KEY}`],
    },
    coverage: {
      url: "http://127.0.0.1:8555", // Coverage launches its own ganache-cli client
    },
  },
  etherscan: {
    // Your API key for Etherscan
    // Obtain one at https://etherscan.io/
    apiKey: ETHERSCAN_API_KEY,
  },
};

export default config;