hardhat.config.ts

import { config as dotEnvConfig } from "dotenv";
import { HardhatUserConfig } from "hardhat/config";
import fs from "fs";
dotEnvConfig();

import * as tdly from "@tenderly/hardhat-tenderly";
tdly.setup({ automaticVerifications: false });

import "@openzeppelin/hardhat-upgrades";
import "hardhat-preprocessor";
import "@typechain/hardhat";
import "@nomiclabs/hardhat-ethers";
import "hardhat-deploy";
import "@nomicfoundation/hardhat-verify";

function getRemappings() {
  return fs
    .readFileSync("remappings.txt", "utf8")
    .split("\n")
    .filter(Boolean)
    .map((line) => line.trim().split("="));
}

const config: HardhatUserConfig = {
  defaultNetwork: "hardhat",
  networks: {
    tenderly: {
      url: process.env.TENDERLY_RPC || "",
      accounts: process.env.MAINNET_PRIVATE_KEY !== undefined ? [process.env.MAINNET_PRIVATE_KEY] : [],
    },
    arbitrum: {
      url: process.env.ARBITRUM_MAINNET_RPC || "",
      accounts: [process.env.MAINNET_PRIVATE_KEY || ""],
    },
    base: {
      url: process.env.BASE_MAINNET_RPC || "",
      chainId: 8453,
      accounts: process.env.MAINNET_PRIVATE_KEY !== undefined ? [process.env.MAINNET_PRIVATE_KEY] : [],
    },
    base_sepolia: {
      url: process.env.BASE_SEPOLIA_RPC || "",
      chainId: 84532,
      accounts: process.env.MAINNET_PRIVATE_KEY !== undefined ? [process.env.MAINNET_PRIVATE_KEY] : [],
    },
    tenderly_base_sepolia: {
      url: process.env.TENDERLY_BASE_SEPOLIA_RPC || "",
      chainId: 184532,
      accounts: process.env.MAINNET_PRIVATE_KEY !== undefined ? [process.env.MAINNET_PRIVATE_KEY] : [],
    },
  },
  solidity: {
    version: "0.8.18",
    settings: {
      optimizer: {
        enabled: true,
        runs: 1,
      },
    },
  },
  paths: {
    sources: "./src",
    cache: "./cache_hardhat",
    artifacts: "./artifacts",
  },
  typechain: {
    outDir: "./typechain",
    target: "ethers-v5",
  },
  tenderly: {
    project: process.env.TENDERLY_PROJECT_NAME!,
    username: process.env.TENDERLY_USERNAME!,
    privateVerification: true,
  },
  etherscan: {
    apiKey: {
      arbitrumOne: process.env.ETHERSCAN_API_KEY!,
      arbitrumGoerli: process.env.ETHERSCAN_API_KEY!,
      base: process.env.BASESCAN_API_KEY!,
      baseSepolia: process.env.BASESCAN_API_KEY!,
    },
    customChains: [
      {
        network: "base",
        chainId: 8453,
        urls: {
          apiURL: "https://api.basescan.org/api",
          browserURL: "https://www.basescan.org",
        },
      },
      {
        network: "baseSepolia",
        chainId: 84532,
        urls: {
          apiURL: "https://api-sepolia.basescan.org/api",
          browserURL: "https://sepolia.basescan.org/",
        },
      },
    ],
  },
  // This fully resolves paths for imports in the ./lib directory for Hardhat
  preprocess: {
    eachLine: (hre) => ({
      transform: (line: string) => {
        if (line.match(/^\s*import /i)) {
          getRemappings().forEach(([find, replace]) => {
            if (line.match(find)) {
              line = line.replace(find, replace);
            }
          });
        }
        return line;
      },
    }),
  },
};

export default config;