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 Hardhat documentation 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 Ghostnet 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 Ghostnet Testnet, substitute the RPC URL https://node.ghostnet.etherlink.com for the Mainnet URL.