hardhat.config.ts

import '@nomiclabs/hardhat-waffle';
import '@typechain/hardhat';
import '@nomiclabs/hardhat-etherscan';
import 'hardhat-gas-reporter';
import { config } from 'dotenv';
config({ path: '.env' });

module.exports = {
  gasReporter: {
    currency: 'USD',
    token: 'ETH',
    gasPrice: 20,
    enabled: process.env.COINMARKETCAP_API_KEY ? true : false,
    coinmarketcap: process.env.COINMARKETCAP_API_KEY,
  },
  solidity: {
    version: '0.8.16',
    settings: {
      optimizer: {
        enabled: true,
        runs: 200,
      },
    },
  },
  typechain: {
    outDir: 'typechain-types',
    target: 'ethers-v5',
  },
  networks: {
    hardhat: {
      forking: {
        url: `https://polygon-mumbai.g.alchemy.com/v2/${process.env.MUMBAI_API_KEY}`,
      },
    },
    polygonMumbai: {
      url: `https://rpc.eu-north-1.gateway.fm/v4/polygon/non-archival/mumbai`,
      accounts: [process.env.PRIVATE_KEY],
    },
    scroll: {
      url: 'https://alpha-rpc.scroll.io/l2' || '',
      accounts: [process.env.PRIVATE_KEY],
    },
    taiko: {
      url: 'http://rpc.test.taiko.xyz',
      accounts: [process.env.PRIVATE_KEY],
    },
    mantle: {
      url: 'https://rpc.testnet.mantle.xyz',
      accounts: [process.env.PRIVATE_KEY],
    },
    optimisticEthereum: {
      url: 'https://mainnet.optimism.io',
      accounts: [process.env.PRIVATE_KEY],
    }
  },
  etherscan: {
    apiKey: {
      scroll: 'abc',
      polygonMumbai: '7V4UBHQJT1G7TIWHKFQ2VU5RMG3U8KYSCB',
      mantle: '266e97a3-6b1b-45b9-8c48-ac9888f6786b',
      optimisticEthereum: 'FN1NSQ23ZPJ992WT9C4GNWA2RNAJDTGQX6',
    },
    customChains: [
      {
        network: 'scroll',
        chainId: 534353,
        urls: {
          apiURL: 'https://blockscout.scroll.io/api',
          browserURL: 'https://blockscout.scroll.io/',
        },
      },
      {
        network: 'taiko',
        chainId: 167005,
        urls: {
          apiURL: 'https://explorer.test.taiko.xyz/api',
          browserURL: 'https://explorer.test.taiko.xyz',
        },
      },
      {
        network: 'mantle',
        chainId: 5001,
        urls: {
          apiURL: 'https://explorer.testnet.mantle.xyz/api',
          browserURL: 'https://explorer.testnet.mantle.xyz',
        },
      },
    ],
  },
};