example-erc20-tutorial/hardhat.config.ts

// Plugins
import "@nomicfoundation/hardhat-toolbox";
import {config as dotenvConfig} from "dotenv";
import "hardhat-deploy";
import {HardhatUserConfig} from "hardhat/config";
import {resolve} from "path";

// DOTENV_CONFIG_PATH is used to specify the path to the .env file for example in the CI
const dotenvConfigPath: string = process.env.DOTENV_CONFIG_PATH || "./.env";
dotenvConfig({ path: resolve(__dirname, dotenvConfigPath) });

const TESTNET_CHAIN_ID = 8008135;
const TESTNET_RPC_URL = "https://api.helium.luxfhe.zone";

const testnetConfig: any = {
    chainId: TESTNET_CHAIN_ID,
    url: TESTNET_RPC_URL,
}


// Select either private keys or mnemonic from .env file or environment variables
const keys = process.env.KEY;
if (!keys) {
  let mnemonic = process.env.MNEMONIC;
  if (mnemonic) {
    testnetConfig['accounts'] = {
      count: 10,
      mnemonic,
      path: "m/44'/60'/0'/0",
    }
  }
} else {
  testnetConfig['accounts'] = [keys];
}


const config: HardhatUserConfig = {
  solidity: {
    version: "0.8.27",
    settings: {
      evmVersion: "cancun",
      optimizer: {
        enabled: true,
        runs: 200
      }
    }
  },
  defaultNetwork: "hardhat",
  networks: {
    hardhat: {},
    testnet: testnetConfig,
  },
  typechain: {
    outDir: "types",
    target: "ethers-v6",
  },
};

export default config;