Hardhat configuration file

hardhat.config.js

require('@nomicfoundation/hardhat-toolbox');
require('dotenv').config();

/** @type import('hardhat/config').HardhatUserConfig */
module.exports = {
  solidity: {
    version: '0.8.9',
    settings: {
      optimizer: {
        enabled: true,
        runs: 200,
      },
    },
  },
  networks: {
    rinkeby: {
      url: process.env.PROVIDER_URL,
      accounts: [process.env.WALLET_PRIVATE_KEY],
    },
  },
  etherscan: {
    apiKey: process.env.ETHERSCAN_API_KEY,
  },
};