Sample of a custom Hardhat Project

This project demonstrates a basic Hardhat use case. It comes with my custom contract, a created API, and a custom script module that deploys that contract.

Functionality Implemented

Smart Contract Interaction

• Retrieving Contract Data (getMyContractData): Fetches the contract's name and balance.
• Updating Contract Balance (updateMyContractBalance): Updates the contract's stored balance.

Web3 Account Management

• Fetching Account Balance (getAccountBalance): Retrieves the ETH balance of a specific account.
• Getting Account Address (getAccount): Returns an Ethereum account address based on an index.

Gas and Transaction Cost Estimation

• Calculating ETH Transaction Cost (getETHPrice): Computes the real ETH cost of a transaction based on gas usage and price.

API Endpoints

• GET / (getMyContract): Returns the current contract data.
• POST / (updateMyContract): Updates the contract balance and returns gas usage, cost in ETH, and the sender's current ETH balance.

Try running some of the following tasks:

npm install
npx hardhat node
npm run deployMyContract
npm run dev