Hardhat
Deploying Smart Contracts using Hardhat
What is Hardhat?
Hardhat is a development environment for Ethereum that helps developers manage and automate the common tasks involved in building smart contracts and decentralized applications. It can directly interact with Caldera's Ethereum API, allowing for the deployment of smart contracts into the Caldera network. Additionally, Hardhat is a comprehensive set of tools for creating Ethereum-based software, which includes various components that aid in editing, compiling, debugging, and deploying smart contracts and decentralized applications. All of these components work together to create a complete development environment.
Creating a Hardhat Project
Create a directory for your project
mkdir hardhat && cd hardhat
Initialize the project which will create a
package.json
file
npm init -y
Install Hardhat
npm install hardhat
Create a project
npx hardhat
Create an empty hardhat.config.js and install the Ethers plugin to use the Ethers.js library to interact with the network.
npm install @nomiclabs/hardhat-ethers ethers
Creating your Smart Contract
Create a
contracts
directory
mkdir contracts && cd contracts
Create
your_contract.sol
file incontracts
directory
touch your_contract.sol
Creating your Configuration File
Modify the Hardhat configuration file and create a secure file to store your private key in.
Create a
secrets.json
file to store your private keytouch secrets.jsonAdd your private key to
secrets.json
{"privateKey": "YOUR-PRIVATE-KEY-HERE"}Add the file to your project's
.gitignore
, and never reveal your private key.Modify the
hardhat.config.js
fileImport the Ethers plugin
Import the
secrets.json
fileInside the
module.exports
add the Caldera network configuration
//hardhat.config.jsrequire('@nomiclabs/hardhat-ethers');const { privateKey } = require('./secrets.json');module.exports = {solidity: "0.8.1",defaultNetwork: "rinkeby",networks: {rinkeby: {url: "https://eth-rinkeby.alchemyapi.io/v2/123abc123abc123abc123abc123abcde",accounts: [privateKey]},caldera: {url: "RPC URL", // Insert your RPC URL HerechainId: CHAINID, //Insert your ChainID Here}},}
Last updated