hardhat.config.ts

import "@nomiclabs/hardhat-waffle";
import "@typechain/hardhat";
import "hardhat-gas-reporter";
import "solidity-coverage";
import "@nomiclabs/hardhat-ethers";
import "@nomiclabs/hardhat-etherscan";

import { config as dotenvConfig } from "dotenv";
import { HardhatUserConfig } from "hardhat/config";
import { NetworkUserConfig } from "hardhat/types";
import { resolve } from "path";

import "./scripts/deploy";

dotenvConfig({ path: resolve(__dirname, "./.env") });

const chainIds = {
  goerli: 5,
  hardhat: 31337,
  kovan: 42,
  mainnet: 1,
  rinkeby: 4,
  ropsten: 3,
};

// Ensure that we have all the environment variables we need.
const mnemonic: string | undefined = process.env.MNEMONIC;
if (!mnemonic) {
  throw new Error("Please set your MNEMONIC in a .env file");
}

const infuraApiKey: string | undefined = process.env.INFURA_API_KEY;
if (!infuraApiKey) {
  throw new Error("Please set your INFURA_API_KEY in a .env file");
}

function getChainConfig(network: keyof typeof chainIds): NetworkUserConfig {
  const url: string = `https://${network}.infura.io/v3/${infuraApiKey}`;
  return {
    accounts: {
      count: 10,
      mnemonic,
      path: "m/44'/60'/0'/0",
    },
    chainId: chainIds[network],
    url,
  };
}

const config: HardhatUserConfig = {
  defaultNetwork: "hardhat",
  networks: {
    // hardhat: {
    //   accounts: {
    //     mnemonic,
    //   },
    //   chainId: chainIds.hardhat,
    // },
    goerli: getChainConfig("goerli"),
    ropsten: getChainConfig("ropsten"),
    localhost: {
      url: "http://127.0.0.1:8545",
    },
  },
  paths: {
    artifacts: "./artifacts",
    cache: "./cache",
    sources: "./contracts",
    tests: "./test",
  },
  solidity: {
    compilers: [
      {
        version: "0.8.3",
        settings: {
          metadata: {
            // Not including the metadata hash
            // https://github.com/paulrberg/solidity-template/issues/31
            bytecodeHash: "none",
          },
          // Disable the optimizer when debugging
          // https://hardhat.org/hardhat-network/#solidity-optimizer-support
          optimizer: {
            enabled: true,
            runs: 800,
          },
        },
      },
      {
        version: "0.6.11",
        settings: {
          metadata: {
            // Not including the metadata hash
            // https://github.com/paulrberg/solidity-template/issues/31
            bytecodeHash: "none",
          },
          // Disable the optimizer when debugging
          // https://hardhat.org/hardhat-network/#solidity-optimizer-support
          optimizer: {
            enabled: true,
            runs: 800,
          },
        },
      },
    ],
  },
  /*
  typechain: {
    outDir: "typechain",
    target: "ethers-v5",
  },
  */
  etherscan: {
    apiKey: process.env.ETHERSCAN_API_KEY,
  },
};

export default config;