Hardhat

Deploying Smart Contract Using Hardhat

In this article, we'll learn how to build a smart contract with Hardhat.

Preparation

Before you start, make sure that the following prerequisites are installed.

  • Node.js and npm

  • Hardhat

Project Setting

  1. Create a new directory for your project and navigate to it.

  2. Run the following command to initialize a new npm project.

npm init -y

  1. Run the following command to install Hardhat.

npm install --save-dev hardhat

  1. Run the following command and follow the prompts to initialize Hardhat.

npx hardhat

Writing Smart Contract

  1. In thecontractsdirectory, create a solidity file named MyContract.sol.

  2. Create a file as shown below.

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract MyContract {
    // Contract code goes here...
}

Deploying Smart Contract

  1. Create a new file called deploy.js in the scripts directory.

  2. Write a deployment script using Hardhat's deployment API.

const { ethers } = require("hardhat");

async function main() {
    const MyContract = await ethers.getContractFactory("MyContract");
    const myContract = await MyContract.deploy();

    await myContract.deployed();

    console.log("MyContract deployed to:", myContract.address);
}

main()
    .then(() => process.exit(0))
    .catch((error) => {
        console.error(error);
        process.exit(1);
    });

  1. Run the following command to run the deployment script.

Set the network name to deploy to.

npx hardhat run scripts/deploy.js --network <network-name>

  1. This script deploys a smart contract and writes the contract address to the console.

Wrapping Up

You've successfully deployed a smart contract using Hardhat. Now you can call the deployed contract using its address.

For more information, visit Hardhat's official website.

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