Development toolkits

👷 Hardhat

Hardhat is an Ethereum development environment for professionals. It facilitates performing frequent tasks, such as running tests, automatically checking code for mistakes or interacting with a smart contract. To get started, check out the tutorial created by the team or the Etherlink tutorial.

Using Hardhat with Etherlink

Hardhat works seamlessly with Etherlink. You can follow the documentation at https://hardhat.org/docs and insert values for Etherlink.

Here is an example hardhat.config.js file for Etherlink Mainnet and Testnet:

module.exports = {
  solidity: "0.8.24",
  networks: {
    etherlinkMainnet: {
      url: "https://node.mainnet.etherlink.com",
      accounts: ["<YOUR_PRIVATE_KEY>"],
    },
    etherlinkTestnet: {
      url: "https://node.ghostnet.etherlink.com",
      accounts: ["<YOUR_PRIVATE_KEY>"],
    },
  },
  etherscan: {
    apiKey: {
      etherlinkMainnet: "YOU_CAN_COPY_ME",
      etherlinkTestnet: "YOU_CAN_COPY_ME",
    },
    customChains: [
      {
        network: "etherlinkMainnet",
        chainId: 42793,
        urls: {
          apiURL: "https://explorer.etherlink.com/api",
          browserURL: "https://explorer.etherlink.com",
        },
      },
      {
        network: "etherlinkTestnet",
        chainId: 128123,
        urls: {
          apiURL: "https://testnet.explorer.etherlink.com/api",
          browserURL: "https://testnet.explorer.etherlink.com",
        },
      },
    ],
  },
};

Deploying and verifying contracts with Hardhat

Hardhat offers great guides for deploying and verifying your contracts. Just make sure to set the network flag appropriately: --network etherlinkMainnet or --network etherlinkTestnet, as appropriate.

🔥 Foundry

Foundry is a fast, portable and modular toolkit for Ethereum application development written in Rust. It consists of various subpackages:

Forge: Ethereum testing framework (like Truffle, Hardhat and DappTools).
Cast: Swiss army knife for interacting with EVM smart contracts, sending transactions and getting chain data.
Anvil: Local Ethereum node, akin to Ganache, Hardhat Network.
Chisel: Fast, utilitarian, and verbose solidity REPL.

Deploying and verifying contracts with Foundry

For the most up to date information on how to deploy and verify a smart contract, check out the guide provided by the Foundry team!

As a summary, you can run the following command for Etherlink:

forge create --rpc-url "https://node.mainnet.etherlink.com" \
    --private-key "<YOUR_PRIVATE_KEY>" \
    --etherscan-api-key "YOU_CAN_COPY_ME" \
    --verify \
    src/YOUR_CONTRACT.sol:YOUR_CONTRACT --legacy

To use Etherlink Testnet, substitute the RPC URL https://node.ghostnet.etherlink.com for the Mainnet URL.