hardhat.config.js

require("dotenv").config()

require("@nomiclabs/hardhat-etherscan")
require("@nomiclabs/hardhat-waffle")
require("hardhat-gas-reporter")
require("solidity-coverage")
require("hardhat-deploy")
require("@nomiclabs/hardhat-ethers")

/**
 * @type import('hardhat/config').HardhatUserConfig
 */

const KOVAN_RPC_URL = process.env.KOVAN_RPC_URL
const PRIVATE_KEY = process.env.PRIVATE_KEY
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY
const COINMARKETCAP_API_KEY = process.env.COINMARKETCAP_API_KEY

module.exports = {
    //solidity: "0.8.8",
    solidity: {
        compilers: [
            {
                version: "0.8.8",
            },
            {
                version: "0.6.6",
            },
        ],
    },
    defaultNetwork: "hardhat",
    networks: {
        kovan: {
            url: KOVAN_RPC_URL,
            accounts: [PRIVATE_KEY],
            chainId: 42,
            blockConfirmations: 6,
        },
        // rinkeby: {
        //     url: KOVAN_RPC_URL,
        //     accounts: [PRIVATE_KEY],
        //     chainId: 4,
        //     blockConfirmations: 6,
        // },
    },
    gasReporter: {
        enabled: false,
        currency: "USD",
        outputFile: "gas-report.txt",
        noColors: true,
        //coinmarketcap: COINMARKETCAP_API_KEY,
        token: "ETH",
        //Para ver el precio de gas de la blockchin en la que queremos trabajar.
    },
    etherscan: {
        apiKey: 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
        },
    },
}