A playground project used to discover new techniques, tools or just to try things out.

• Solidity
• ethers.js
• TypeScript
• Prettier
• dotenv
• Hardhat
• Mocha
• hardhat-gas-reporter
• Solidity Coverage
• Typechain
• Chainlink
• hardhat-deploy

The hardhat-etherscan plugin is used to verify the deployed contract programmatically and automatically, make sure the Etherscan API key is set in the .env file. Verification will only be performed if the ETHERSCAN_API_KEY environment variable is true and chainId is 5 (a.k.a. chainId of Goerli test network).

At the moment there are two ways to deploy smart contracts. Using hardhat-deploy is prefered.

npm run deploy to deploy on default and temporary hardhat blockchain. To deploy on the goerli test network you can run npm run deploy-goerli. The utils/deploy.ts script will automatically deploy the contract to the specified network.

npm run hardhat-deploy will use the hardhat-deploy plugin to deploy the contract to the default and temporary hardhat blockchain. run npm run hardhat-deploy-goerli to deploy to the goerli test network.

• GOERLI_RPC_URL and PRIVATE_KEY are used to connect to the Goerli test network.
• PRIVATE_KEY is used to sign transactions.
• ETHERSCAN_API_KEY is used to verify the deployed contract.
• COINMARKETCAP_API_KEY is used to see current gas prices in specified currency inside gas report.

• While deploying to the default and temporary hardhat blockchain, the pricefeed will be served by a mock. This is because there is no pricefeed available for a local test network.