hardhat-zksync-node 🚀

ZKsync Era Hardhat plugin to run the ZKsync era-test-node locally.

⚠️ Version Compatibility Warning

Ensure you are using the correct version of the plugin with ethers:

• For plugin version <1.0.0:

  • Compatible with ethers v5.

• For plugin version ≥1.0.0:

  • Compatible with ethers v6 (⭐ Recommended)

From version 1.1.1, the plugin is not dependent on a specific ethers version and can be used for both ethers v5 and v6 projects.

📥 Installation

To install hardhat-zksync-node plugin, run:

npm install -D @matterlabs/hardhat-zksync-node

or

yarn add -D @matterlabs/hardhat-zksync-node

🕹 Commands

yarn hardhat node-zksync

This command runs a local ZKsync In-memory node by initiating a JSON-RPC server. It uses the provided or default configurations to set up and run the ZKsync node, allowing for blockchain operations in a local environment. The command also handles tasks such as downloading the necessary JSON-RPC server binary if it's not already present.

| 🔧 Command | 📄 Description | |-------------------------------------|----------------------------------------------------------------------------------------------------------------------| | --port | Port on which the server should listen. Defaults to 8011. | | --log | Log filter level. Accepted values are: error, warn, info, and debug. Defaults to info. | | --log-file-path | Path to the file where logs should be written. Defaults to era_test_node.log | | --cache | Type of cache to use. Accepted values are: none, disk, and memory. Defaults to disk. | | --cache-dir | Directory location for the disk cache. Defaults to .cache | | --reset-cache | Flag to reset the local disk cache. | | --show-calls | Determines which call debug information to show. Accepted values are: none, user, system, and all. Defaults to none. | | --show-storage-logs | Determines which storage logs to show. Accepted values are: none, read, write, and all. Defaults to none. | | --show-vm-details | Specifies the level of Virtual Machine (VM) details to show. Accepted values are: none and all. Defaults to none. | | --show-gas-details | Specifies the level of gas details to show. Accepted values are: none and all. Defaults to none. | | --resolve-hashes | When enabled, it makes the debug log more readable but might decrease performance. | | --dev-use-local-contracts | Flag to load locally compiled system contracts. Useful when making changes to system contracts or bootloader. | | ---fork | Starts a local network that is a fork of another network. Accepted values are: testnet, mainnet, or a specific URL. | | --fork-block-number | Specifies the block height at which to fork. | | --replay-tx | Transaction hash to replay. |

Restrictions: The --replay-tx and --fork-block-number parameters cannot be specified simultaneously.

📝 Documentation

In addition to the hardhat-zksync-node, ZKsync's Era website offers a variety of resources including:

Guides to get started: Learn how to start building on ZKsync Era.
Hardhat ZKsync Era plugins: Overview and guides for all Hardhat ZKsync Era plugins.
ZK Chains: Deep dive into the concept of ZK chains.

🤝 Contributing

Contributions are always welcome! Feel free to open any issue or send a pull request.

Go to CONTRIBUTING.md to learn about steps and best practices for contributing to ZKsync hardhat tooling base repository.

🙌 Feedback, help and news

ZKsync Era Discord server: for questions and feedback.
Follow ZKsync Era on Twitter

Happy building! 👷‍♀️👷‍♂️