hardhat.config.ts

import * as dotenv from "dotenv";
dotenv.config();

import fs from "fs";
import { HardhatUserConfig } from "hardhat/config";
import "solidity-docgen";
import "hardhat-preprocessor";
import "@nomicfoundation/hardhat-toolbox";
import "@nomiclabs/hardhat-ethers";

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

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

const config: HardhatUserConfig = {
  solidity: {
    version: "0.8.17",
    settings: {
      optimizer: {
        enabled: true,
        runs: 200,
      },
    },
  },
  networks: {
    ethereum: {
      url: process.env.ETHEREUM_RPC_URL || "",
      accounts:
        process.env.PRIVATE_KEY !== undefined ? [process.env.PRIVATE_KEY] : [],
    },
    goerli: {
      url: process.env.GOERLI_RPC_URL || "",
      accounts:
        process.env.PRIVATE_KEY !== undefined ? [process.env.PRIVATE_KEY] : [],
    },
    mumbai: {
      url: process.env.MUMBAI_RPC_URL || "",
      accounts:
        process.env.PRIVATE_KEY !== undefined ? [process.env.PRIVATE_KEY] : [],
    },
    arbi_goerli: {
      url: process.env.ARBI_GOERLI_RPC_URL || "",
      accounts:
        process.env.PRIVATE_KEY !== undefined ? [process.env.PRIVATE_KEY] : [],
    },
    polygon: {
      url: process.env.POLYGON_RPC_URL || "",
      accounts:
        process.env.PRIVATE_KEY !== undefined ? [process.env.PRIVATE_KEY] : [],
    },
    avalanche: {
      url: process.env.AVAX_RPC_URL || "",
      accounts:
        process.env.PRIVATE_KEY !== undefined ? [process.env.PRIVATE_KEY] : [],
    },
    arbitrum: {
      url: process.env.ARBITRUM_RPC_URL || "",
      accounts:
        process.env.PRIVATE_KEY !== undefined ? [process.env.PRIVATE_KEY] : [],
    },
  },
  preprocess: {
    eachLine: (hre) => ({
      transform: (line: string) => {
        if (line.match(/^\s*import /i)) {
          for (const [from, to] of getRemappings()) {
            if (line.includes(from)) {
              line = line.replace(from, to);
              break;
            }
          }
        }
        return line;
      },
    }),
  },
  paths: {
    sources: "./src",
    cache: "./cache_hardhat",
  },
  etherscan: {
    apiKey: process.env.ETHERSCAN_API_KEY,
  },
  tenderly: {
    project: process.env.TENDERLY_PROJECT || "",
    username: process.env.TENDERLY_USERNAME || "",
    privateVerification: true,
  },
};
export default config;