Development Artifact Cleanup: ✅ BROTHER_NODE REORGANIZATION: Moved development test node to appropriate location - dev/test-nodes/brother_node/: Moved from root directory for better organization - Contains development configuration, test logs, and test chain data - No impact on production systems - purely development/testing artifact ✅ DEVELOPMENT ARTIFACTS IDENTIFIED: - Chain ID: aitbc-brother-chain (test/development chain) - Ports: 8010 (P2P) and 8011 (RPC) - different from production - Environment: .env file with test configuration - Logs: rpc.log and node.log from development testing session (March 15, 2026) ✅ ROOT DIRECTORY CLEANUP: Removed development clutter from production directory - brother_node/ moved to dev/test-nodes/brother_node/ - Root directory now contains only production-ready components - Development artifacts properly organized in dev/ subdirectory DIRECTORY STRUCTURE IMPROVEMENT: 📁 dev/test-nodes/: Development and testing node configurations 🏗️ Root Directory: Clean production structure with only essential components 🧪 Development Isolation: Test environments separated from production BENEFITS: ✅ Clean Production Directory: No development artifacts in root ✅ Better Organization: Development nodes grouped in dev/ subdirectory ✅ Clear Separation: Production vs development environments clearly distinguished ✅ Maintainability: Easier to identify and manage development components RESULT: Successfully moved brother_node development artifact to dev/test-nodes/ subdirectory, cleaning up the root directory while preserving development testing environment for future use.
Sample Hardhat 3 Beta Project (node:test and viem)
This project showcases a Hardhat 3 Beta project using the native Node.js test runner (node:test) and the viem library for Ethereum interactions.
To learn more about the Hardhat 3 Beta, please visit the Getting Started guide. To share your feedback, join our Hardhat 3 Beta Telegram group or open an issue in our GitHub issue tracker.
Project Overview
This example project includes:
- A simple Hardhat configuration file.
- Foundry-compatible Solidity unit tests.
- TypeScript integration tests using
node:test, the new Node.js native test runner, andviem. - Examples demonstrating how to connect to different types of networks, including locally simulating OP mainnet.
Usage
Running Tests
To run all the tests in the project, execute the following command:
npx hardhat test
You can also selectively run the Solidity or node:test tests:
npx hardhat test solidity
npx hardhat test nodejs
Make a deployment to Sepolia
This project includes an example Ignition module to deploy the contract. You can deploy this module to a locally simulated chain or to Sepolia.
To run the deployment to a local chain:
npx hardhat ignition deploy ignition/modules/Counter.ts
To run the deployment to Sepolia, you need an account with funds to send the transaction. The provided Hardhat configuration includes a Configuration Variable called SEPOLIA_PRIVATE_KEY, which you can use to set the private key of the account you want to use.
You can set the SEPOLIA_PRIVATE_KEY variable using the hardhat-keystore plugin or by setting it as an environment variable.
To set the SEPOLIA_PRIVATE_KEY config variable using hardhat-keystore:
npx hardhat keystore set SEPOLIA_PRIVATE_KEY
After setting the variable, you can run the deployment with the Sepolia network:
npx hardhat ignition deploy --network sepolia ignition/modules/Counter.ts