hardhat.config.ts

// Get the environment configuration from .env file
//
// To make use of automatic environment setup:
// - Duplicate .env.example file and name it .env
// - Fill in the environment variables
import "dotenv/config";

import "hardhat-deploy";
import "@nomicfoundation/hardhat-ethers";
import "@nomiclabs/hardhat-waffle";
import "hardhat-deploy-ethers";
import "hardhat-contract-sizer";
import "@nomiclabs/hardhat-ethers";
import "@layerzerolabs/toolbox-hardhat";

import {
  HardhatUserConfig,
  HttpNetworkAccountsUserConfig,
} from "hardhat/types";

import { EndpointId } from "@layerzerolabs/lz-definitions";

import "./tasks/index";

// Set your preferred authentication method
//
// If you prefer using a mnemonic, set a MNEMONIC environment variable
// to a valid mnemonic
const MNEMONIC = process.env.MNEMONIC;

// If you prefer to be authenticated using a private key, set a PRIVATE_KEY environment variable
const PRIVATE_KEY = process.env.PRIVATE_KEY;

const accounts: HttpNetworkAccountsUserConfig | undefined = MNEMONIC
  ? { mnemonic: MNEMONIC }
  : PRIVATE_KEY
    ? [PRIVATE_KEY]
    : undefined;

if (accounts == null) {
  console.warn(
    "Could not find MNEMONIC or PRIVATE_KEY environment variables. It will not be possible to execute transactions in your example.",
  );
}

const config: HardhatUserConfig = {
  paths: {
    cache: "cache/hardhat",
    tests: "test/hardhat",
  },
  solidity: {
    compilers: [
      {
        version: "0.8.22",
        settings: {
          optimizer: {
            enabled: true,
            runs: 200,
          },
        },
      },
    ],
  },
  networks: {
    "arbsep-testnet": {
      eid: EndpointId.ARBSEP_V2_TESTNET,
      url:
        process.env.RPC_URL_SEPOLIA ||
        "https://arbitrum-sepolia-rpc.publicnode.com",
      accounts,
    },
    hardhat: {
      // Need this for testing because TestHelperOz5.sol is exceeding the compiled contract size limit
      allowUnlimitedContractSize: true,
    },
  },
  namedAccounts: {
    deployer: {
      default: 0, // wallet address of index[0], of the mnemonic in .env
    },
  },
};

export default config;