hardhat.config.ts

import 'hardhat-gas-reporter';
import 'hardhat-tracer';
import '@nomiclabs/hardhat-waffle';
import '@nomiclabs/hardhat-ethers';
import '@nomiclabs/hardhat-etherscan';
import 'solidity-coverage';
import './scripts/deploy';

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

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

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

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

function getChainConfig(network: keyof typeof chainIds): NetworkUserConfig {
  const url = `https://${network}.infura.io/v3/${process.env.infuraApiKey}`;
  return {
    accounts: {
      count: 10,
      mnemonic: process.env.DEPLOYER_MNEMONIC,
      path: "m/44'/60'/0'/0",
    },
    chainId: chainIds[network],
    url,
    gasMultiplier: 1.5,
  };
}

const config: HardhatUserConfig = {
  defaultNetwork: 'hardhat',
  networks: {
    goerli: getChainConfig('goerli'),
    mainnet: getChainConfig('mainnet'),
    localhost: {
      url: 'http://127.0.0.1:8545',
      chainId: 1,
    },
    hardhat: {
      chainId: 1,
      accounts: {
        count: 10,
        mnemonic: process.env.MNEMONIC,
        path: "m/44'/60'/0'/0",
      },
    },
  },
  solidity: {
    compilers: [
      {
        version: '0.8.13',
        settings: {
          metadata: {
            bytecodeHash: 'none',
          },
          optimizer: {
            enabled: true,
            runs: 800,
          },
        },
      },
    ],
  },
  paths: {
    artifacts: './artifacts',
    cache: './cache',
    sources: './contracts',
    tests: './tests',
  },
};

export default config;