hardhat.config.ts

import "@nomiclabs/hardhat-waffle";
import "@typechain/hardhat";
import "hardhat-gas-reporter";
import "solidity-coverage";
import "@nomiclabs/hardhat-ethers";
import "hardhat-contract-sizer";
import { resolve } from "path";
require("@nomiclabs/hardhat-waffle");

import { config as dotenvConfig } from "dotenv";
import { HardhatUserConfig } from "hardhat/config";
import { NetworkUserConfig } from "hardhat/types";
import "@nomiclabs/hardhat-etherscan";
import "uniswap-v3-deploy-plugin";

import "./tasks/accounts";
import "./tasks/clean";

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

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

const privateKey: any = process.env.MAINNET_PVT_KEY;

// 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");
}

if (!privateKey) {
  throw new Error("Please set your privateKey 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/" + process.env.MAINNET_INFURA_KEY;
  return {
    accounts: [`0x${privateKey}`],
    // {
    //   count: 10,
    //   mnemonic,
    //   path: "m/44'/60'/0'/0",
    // },
    chainId: chainIds[network],
    url,
    gasPrice: 180000000000,
  };
}

const config: HardhatUserConfig = {
  defaultNetwork: "hardhat",
  gasReporter: {
    currency: "USD",
    enabled: process.env.REPORT_GAS ? true : false,
    excludeContracts: [],
    src: "./contracts",
  },
  networks: {
    hardhat: {
      accounts: {
        mnemonic,
      },

      chainId: chainIds.hardhat,
    },
    goerli: getChainConfig("goerli"),
    kovan: getChainConfig("kovan"),
    rinkeby: getChainConfig("rinkeby"),
    ropsten: getChainConfig("ropsten"),
    mainnet: getChainConfig("mainnet"),
  },
  paths: {
    artifacts: "./artifacts",
    cache: "./cache",
    sources: "./contracts",
    tests: "./test",
  },
  solidity: {
    version: "0.7.6",
    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: 1200,
      },
    },
  },
  typechain: {
    outDir: "types",
    target: "ethers-v5",
  },
  contractSizer: {
    alphaSort: true,
    disambiguatePaths: false,
    runOnCompile: true,
    strict: true,
  },
  etherscan: {
    // Your API key for Etherscan
    // Obtain one at https://etherscan.io/
    apiKey: "MPGJT6TKSTVI9MA1U8JDXZXBNQ16TT9UPK",
  },
};

export default config;